CN102636499A - Material performance parameter acquisition device and viscoelastometer - Google Patents

Abstract

The invention provides a material performance parameter acquisition device and system. The material performance parameter acquisition device comprises a microwave frequency divider, a first data collector and a first data processor, wherein the first data processor is used for obtaining stress value and loss angle value of the tested material in the microwaves signals according to frequency divided data obtained by frequency division processing of microwave signals of preset frequency carried out by the microwave frequency divider and reaction data of the tested material under the action of a preset external force obtained by the first data collector using the microwave signals; and the device further comprises a preprocessor, a second data collector and a second data processor for obtaining the strain value of tested material. The stress value, the loss angle value and the strain value of the tested material can be accurately obtained through the embodiment of the invention, and therefore the usage of the tested material is judged based on dynamic mechanical parameters and thermodynamic performance parameters of elastic modulus, loss modulus and the like obtained according to the stress value, loss angle value and strain value.

Description

A kind of material property parameter deriving means and viscoelastic spectrometer

Technical field

The present invention relates to material property and detect and data processing field particularly a kind of material property parameter deriving means and viscoelastic spectrometer.

Background technology

Before particularly high-end material is used to material; Need test the practical use of judging material according to material property parameter to its material property; Wherein, material property parameter generally has stress value, strain value, loss angle value, elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity etc.

When material is in can not produce displacement under external force in uniform temperature, the certain frequency time, deformation will take place in its geometric configuration and size, and this deformation is called strain.Inside has produced equal and opposite in direction but acting force opposing external force in the opposite direction during material generation deformation, and this reacting force on the unit area is called stress.And there is phase differential between the two in response lag stress, and this phase differential is a loss angle.

But at present; There is not a kind of material property parameter deriving means can under higher bandwidth (like 1000hz) condition, accurately obtain high-end material such as performance parameters such as stress value, strain value and loss angle value; Thereby carry out to obtain after the data processing dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity according to parameters such as stress value, strain value and loss angle values, judge the practical use of this high-end material.

Summary of the invention

Technical matters to be solved by this invention provides a kind of material property parameter deriving means and viscoelastic spectrometer; Can't be implemented in the prior art under the higher bandwidth condition performance parameters such as macromolecular material such as stress value, strain value and loss angle values in order to solve, thereby obtain the dynamic mechanical of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity and the technical matters of accurately obtaining of thermodynamic property parameter.

The invention provides a kind of material property parameter deriving means, this device comprises:

Microwave divider is used for that the microwave signal of preset frequency is carried out frequency division and handles, and generates the corresponding frequency division data of frequency with said microwave signal;

First data acquisition unit is used to utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect;

First data processor is used for obtaining stress value and the loss angle value that said material to be tested is in said microwave signal according to said frequency division data and said response data.

Said apparatus, preferably, said device also comprises:

Pretreater is used to obtain preset and the corresponding displacement controlling value of said predetermined external force, and is used for drawing and the corresponding standard strain value of said displacement controlling value according to the relation of said displacement controlling value and standard strain value;

Second data acquisition unit is used to obtain the test strain value of said material to be tested under said predetermined external force effect;

Second data processor is used for said displacement controlling value, said standard strain value and said test strain value are calculated, and draws the actual strain value.

Said apparatus, preferably, said device also comprises:

Lik-Sang is grown up to be a useful person, and is used to generate predetermined external force, and said predetermined external force is put on material to be tested.

Said apparatus, preferably, said first data processor comprises:

First data extractor is used to extract the intermediate data of said response data, obtains the intermediate data array;

Second data extractor is used for said intermediate data array is carried out even number data and odd number data extract, obtains the first intermediate data array and the second intermediate data array respectively;

First data calculator is used for said frequency division data, the said first intermediate data array and the said second intermediate data array are calculated, and obtains stress value and loss angle value.

Said apparatus, preferably, said second data processor comprises:

The data markers device is used for said displacement controlling value, said standard strain value and said test strain value are designated as um, by and cy respectively;

Second data calculator; Be used to obtain the deviation cy-by of said test strain value cy and said standard strain value by, and obtain deviation ratio according to said deviation cy-by and said standard strain value by

Foundation $\mathrm{Wy}=\mathrm{Um}+\frac{\mathrm{Cy}-\mathrm{By}}{\mathrm{By}}\×\mathrm{Um}$ Obtain the actual strain value;

Wherein, is the deviate of the deviation ratio of said test strain value with respect to said displacement controlling value, and the wy that calculates is said actual strain value.

Said apparatus, preferably, said first data acquisition unit comprises force transducer.

Said apparatus, preferably, said second data acquisition unit comprises displacement transducer and/or acceleration transducer.

Said apparatus, preferably, said device also comprises:

Temperature controller is used for to the test environment of material to be tested temperature control being provided.

Said apparatus, preferably, said device also comprises:

Signal generator is used to produce the microwave signal of said preset frequency.

The present invention also provides a kind of material viscoelastic spectrometer, comprises like above-mentioned any described material property parameter deriving means.

A kind of material property parameter deriving means provided by the invention and viscoelastic spectrometer are handled through the microwave signal of preset frequency being carried out frequency division; And utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect; Obtain said material to be tested according to said frequency division data and said response data and be in stress value and loss angle value in the said microwave signal; Simultaneously; Obtain and the corresponding displacement controlling value of said predetermined external force; The relation of said displacement controlling value of foundation and standard strain value draws with the corresponding standard strain value of said displacement controlling value and obtains the test strain value of said material to be tested under said predetermined external force effect, and said displacement controlling value, said standard strain value and said test strain value are calculated, and draws the actual strain value.Thereby according to said stress value, said loss angle value and said strain value; Carry out obtaining after the data processing dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity, and then the purposes of material to be tested is judged.

Certainly, arbitrary product of embodiment of the present invention might not reach above-described all advantages simultaneously.

Description of drawings

In order to be illustrated more clearly in the technical scheme in the embodiment of the invention; The accompanying drawing of required use is done to introduce simply in will describing embodiment below; Obviously, the accompanying drawing in describing below only is some embodiment of the application, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of a kind of material property parameter deriving means embodiment one provided by the invention;

Fig. 2 is another structural representation of a kind of material property parameter deriving means embodiment one provided by the invention;

Fig. 3 is the structural representation of a kind of material property parameter deriving means embodiment two provided by the invention;

Fig. 4 is another structural representation of a kind of material property parameter deriving means embodiment two provided by the invention;

Fig. 5 is the structural representation of a kind of material property parameter deriving means embodiment three provided by the invention;

Fig. 6 is the structural representation of a kind of viscoelastic spectrometer provided by the invention.

Embodiment

To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.

With reference to figure 1, it shows the structural representation of a kind of material property parameter deriving means of volume provided by the invention, and said device comprises:

Microwave divider 101 is used for that the microwave signal of preset frequency is carried out frequency division and handles, and generates the corresponding frequency division data of frequency with said microwave signal.

Wherein, The performance parameter that device embodiment one provided by the invention is used for material to be tested is obtained; The performance parameter of material to be tested comprises: be under the microwave signal effect of a certain CF; Material to be tested is applied predetermined external force but material displacement to be tested is constant, and deformation can take place in its geometric configuration and size, and this moment, the deformation of material to be tested was called strain; Deformation when taking place in material to be tested, and material internal to be tested can produce equal and opposite in direction but this predetermined external force of acting force opposing in the opposite direction, and this power on the unit area is stress; There is phase differential between the two in response lag stress, and this phase differential is a loss angle.

Wherein, Material to be tested is being carried out before material property parameter obtains; Its residing environmental data information is gathered, promptly the high-frequency microwave signal that puts on material to be tested is in advance carried out the frequency division processing and obtain and the corresponding frequency division data of the frequency of this microwave signal.

First data acquisition unit 102 is used to utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect.

Wherein, said microwave signal is acted on material to be tested, simultaneously material to be tested is applied predetermined external force, utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect by said first data acquisition unit 102.

Wherein, said first data acquisition unit 102 can comprise force transducer, is used to obtain be in the response data under the predetermined external force effect under the said microwave signal.

First data processor 103 is used for obtaining stress value and the loss angle value that said material to be tested is in said microwave signal according to said frequency division data and said response data.

Wherein, Said first data processor 103 can comprise computer system, and the response data that frequency division data that are used for sending according to said microwave divider 101 and said first data acquisition unit 102 send carries out data computation to be handled and obtain stress value and the loss angle value that said material to be tested is in said preset frequency microwave signal.

Can know by such scheme; A kind of material property parameter deriving means embodiment one provided by the invention handles through the microwave signal of preset frequency being carried out frequency division; And utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect; Obtain said material to be tested according to said frequency division data and said response data and be in stress value and loss angle value in the said microwave signal; Thereby carry out obtaining after the data processing dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity according to said stress value and said loss angle value, the purposes of material to be tested is judged.

Based on the foregoing description; With reference to figure 2; It shows another structural representation of a kind of material property parameter deriving means embodiment one provided by the invention, and said first data processor 103 comprises first data extractor 131, second data extractor 132 and first data calculator 133, wherein:

Said first data extractor 131 is used to extract the intermediate data of said response data, obtains the intermediate data array.

Wherein, Before said frequency division data and said response data are calculated, be the accuracy that improves data computation, need 131 pairs of said response datas of said first data extractor carry out data extract; Can be according to preset extracting rule; Extract the intermediate data of said response data, and form the intermediate data array by the intermediate data of said extraction, its array size is decided according to said extracting rule.

For example, the array that said response data is formed is made up of 1000 data item, to middle data extract the time, extracts 700 data item of the 301st data item to the in the said response data array, as the intermediate data array.

Said second data extractor 132 is used for said intermediate data array is carried out even number data and odd number data extract, obtains the first intermediate data array and the second intermediate data array respectively.

Wherein, Intermediate data array to being extracted by said response data is carried out data extract once more; Be divided into two groups; Promptly said intermediate data array is carried out the even number data extract, obtain the first intermediate data array formed by the even number data, remaining odd number data in the said intermediate data array are formed the second intermediate data array.

For example; Intermediate data array to being made up of 700 data item of the 301st data item to the in the above-mentioned response data array is carried out data extract once more; Extract even number data in 700 data item of said the 301st data item to the; Form the first intermediate data array, extract odd number data in 700 data item of said the 301st data item to the, form the second intermediate data array.

First data calculator 133 is used for said frequency division data, the said first intermediate data array and the said second intermediate data array are calculated, and obtains stress value and loss angle value.

Wherein, said first data calculator 133 is divided into a plurality of arrays with said frequency division data and the said first intermediate data array respectively, and the data after said frequency division data and the grouping of the said first intermediate data array are calculated, and obtains the first stress data array.

For example; Said frequency division data, the said first intermediate data array, the said second intermediate data array are designated as w [n1], y1Data [n3] and y2Data [n4] respectively; Wherein, n1, n3 and n4 are respectively data number in said frequency division data, the said first intermediate data array and the said second intermediate data array.

Respectively w [n1] and y1Data [n3] are divided into a plurality of arrays by said first data calculator 133; Data to after w [n1] and y1Data [n3] grouping are calculated; Obtain the first stress data array; Can be designated as deg yi [n8], wherein, n8 is a data number in the said first stress data array.

For example; Said first data calculator 133 is divided into a plurality of arrays with wt [n1] and y1Data [n3] respectively; Form a plurality of array composite sets of forming by two arrays respectively; For example wt [n1] and y1Data [n3] are divided into 10 arrays, extracting wherein, one group of array makes up wt1 [n5] and yData1 [n6];

Wherein, n5 and n6 are respectively data number among array wt1 [n5] and the array yData1 [n6];

Foundation $x1\left[i\right]=\mathrm{Cos}\left(\mathrm{\ω\; t}1\right[i\left]\right)-\frac{\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\mathrm{Cos}\left(\mathrm{\ω\; t}1\right[i\left]\right)}{n5},$ $x2\left[i\right]=\mathrm{Sin}\left(\mathrm{\ω\; t}1\right[i\left]\right)-\frac{\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\mathrm{Sin}\left(\mathrm{\ω\; t}1\right[i\left]\right)}{n5}$ And

Obtain the first mediant x1 [n5], the second middle array x2 [n5] and the 3rd middle array y [n6] respectively;

Wherein, i ∈ [0, n5-1], wt [i] are i the data of wt [n1], and yData1 [ni] is i the data of yData1 [n6];

Foundation $a=\frac{N2\×k2-N3\×k1}{N2\×N2-N1\×N3},$ $b=\frac{N2\×k1-N1\×k2}{N2\×N2-N1\×N3}$ Obtain the first intermediate variable a and the second intermediate variable b by x1 [n5], x2 [n5] and y [n6];

Wherein, $k1=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(y\right[i]\×x1[i\left]\right),$ $k2=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(y\right[i]\×x2[i\left]\right),$ $N1=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(x1\right[i]\×x1[i\left]\right),$ $N2=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(x1\right[i]\×x2[i\left]\right),$ $N3=\underset{i=0}{\overset{n5-1}{\mathrm{\Σ}}}\left(x2\right[i]\×x2[i\left]\right),$ X1 [i], x2 [i] and y [i] are respectively I the data of x1 [n5], x2 [n5] and y [n6];

According to

to a square with b square add and after get the square root that this adds and is worth, obtain the 3rd intermediate variable A1;

Judge the value of a and b, obtain first data of the 5th intermediate variable degree1 as deg yi [n8] according to a and b;

Wherein, if a＞0 and b＜0, then the 4th intermediate variable

If a＞0 and b＞0, $\mathrm{Angle}=2\mathrm{\π}-\mathrm{Arcsin}\left(\frac{b}{A1}\right),$ If a＜0 and b＜0, $\mathrm{Angle}=\mathrm{\π}-\mathrm{Arcsin}\left(\frac{-b}{A1}\right),$ If a＜0 and b＞0, $\mathrm{Angle}=\mathrm{\π}+\mathrm{Arcsin}\left(\frac{b}{A1}\right);$

Obtain first data of the 5th intermediate variable degree1 according to

as deg yi [n8];

Other array combinations in the said array composite set are calculated according to said method, obtain other data among the deg yi [n8].

Said first data calculator 133 is when getting access to the said first stress data array; Respectively said frequency division data and the said second intermediate data array are divided into a plurality of arrays; Data to after said frequency division data and the grouping of the said second intermediate data array are calculated, and obtain the second stress data array and tertiary stress data array.

Wherein, respectively wt [n1] and yData2 [n4] are calculated the second stress data array Ali [n7].

Wherein, respectively wt [n1] and yData2 [n4] are calculated tertiary stress data array deg li [n8].

Each association in 133 pairs of said second stress data arrays of said first data calculator sorts, and obtains stress value.

For example, each association among the Ali [n7] is sorted, its ordering rule can be selected by big extremely little ordering rule, and the 4th data after the said ordering are calculated the stress value that obtains said material to be tested.

Said first data calculator 133 obtains the intermediate stress data array according to said first stress data array and said tertiary stress data array when obtaining stress value.

For example, according to degi [j]=| deg li [j]-deg yi [j] | deg li [n8] and deg yi [n8] are calculated, obtain deg i [n8]; Wherein, J ∈ [0, n8-1], degi [j] are j data among the degi [n8]; Deg li [j] is j data among the deg li [n8], and deg yi [j] is j data among the deg yi [n8].

Said first data calculator 133 is when getting access to said intermediate stress data array according to said first stress data and said tertiary stress data array; Judge that whether each association is greater than 270 degree in the said intermediate stress data array; If; Obtain said data greater than the data item of 270 degree and the absolute difference of 360 degree; And with said absolute value as in the intermediate stress data array with the corresponding data item of said data item, otherwise, with said data item as in the said intermediate stress data array with the corresponding data item of said data item.

For example; Judge that whether each association is greater than 270 degree among the degi [n8]; If, then obtain said data greater than the data item of 270 degree and the absolute difference of 360 degree, and with said absolute value as the middle data item of deg [n8]; Otherwise, with said data item as among the deg [n8] with the corresponding data item of said data item.

After said first data calculator 133 gets access to said intermediate stress data array, each association in the said intermediate stress data array is sorted, obtain the loss angle value.

Wherein, each association among the deg [n8] is sorted, its ordering rule can be selected by big to little ordering rule, and chooses the 4th data after the ordering as the loss angle value of material to be tested.

Can know by such scheme; A kind of material property parameter deriving means embodiment one provided by the invention handles through the microwave signal of preset frequency being carried out frequency division; Generate the corresponding frequency division data of frequency with said microwave signal; Utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect; And said response data carried out data extract, and obtain stress value and loss angle value according to the response data of said frequency division data and extraction, guaranteed the accuracy of stress value and loss angle value.Thereby carry out data processing according to said stress value and said loss angle value; Obtain the dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity, and then the purposes of material to be tested is judged.

With reference to figure 3; It shows the structural representation of a kind of material property parameter deriving means embodiment two provided by the invention; Based on apparatus of the present invention embodiment one, said device also comprises pretreater 104, second data acquisition unit 105 and second data processor 106, wherein:

Said pretreater 104 is used to obtain preset and the corresponding displacement controlling value of said predetermined external force, and is used for drawing and the corresponding standard strain value of said displacement controlling value according to the relation of said displacement controlling value and standard strain value.

Wherein, Preestablish the corresponding relation that material externally applied forces to be tested is pre-seted the displacement controlling value with it; When being in material to be tested in the said microwave signal and applying said predetermined external force, obtain and the corresponding displacement controlling value of said predetermined external force by said pretreater 104.

Wherein, before the material property parameter that carries out said material to be tested obtains, set the relation between said displacement controlling value and the standard strain value.And when setting concerning between said displacement controlling value and the standard strain value, can set according to the historical data of carrying out parameter acquiring to material to be tested.Thus, draw and the corresponding standard strain value of said displacement controlling value by the relation of said pretreater 104 according to said displacement controlling value and standard strain value.

For example; The displacement size of formulating desire control is the relation of displacement controlling value and standard strain value; As: numerical value 600 corresponding 5 μ m; Get access to the corresponding displacement controlling value of said predetermined external force after, draw the standard strain value according to above-mentioned both sides relation, 600* displacement controlling value/5 μ m promptly with the corresponding standard strain value of said displacement controlling value.

Wherein, in apparatus of the present invention embodiment, be :-1000 μ m～+ 1000 μ m with reference to deformation range

Said second data acquisition unit 105 is used to obtain the test strain value of said material to be tested under said predetermined external force effect.

Wherein, Said second data acquisition unit 105 comprises displacement transducer and/or acceleration transducer; Being used for that material to be tested is under the said predetermined external force effect strain that produces carries out data and obtains; Wherein, said displacement transducer is used to obtain the test strain value under the microwave signal effect that material to be tested is in low frequency, and said acceleration transducer is used to obtain the test strain value under the microwave signal effect that material to be tested is in high frequency.

Wherein, acceleration transducer is a kind of electronic equipment that can measure accelerating force, can measure the acceleration that predetermined external force produces.Adopt piezoelectric acceleration transducer, its frequency range 50Hz～2KHz, corresponding displacement sensitivity ± 1mv/ μ m at acceleration transducer described in apparatus of the present invention embodiment.

Said second data processor 106 is used for said displacement controlling value, said standard strain value and said test strain value are calculated, and draws the actual strain value.

Wherein, with reference to figure 4, it shows the another kind of structural representation of apparatus of the present invention embodiment two, and based on the invention described above device embodiment, said second data processor 106 comprises the data markers device 161 and second data calculator 162, wherein:

Said data markers device 161 is used for said displacement controlling value, said standard strain value and said test strain value are designated as um, by and cy respectively.

Said second data calculator 162 is used to obtain the deviation cy-by of said test strain value cy and said standard strain value by, and obtains deviation ratio according to said deviation cy-by and said standard strain value by

And foundation $\mathrm{Wy}=\mathrm{Um}+\frac{\mathrm{Cy}-\mathrm{By}}{\mathrm{By}}\×\mathrm{Um}$ Obtain the actual strain value;

Wherein,

is the deviate of the deviation ratio of said test strain value with respect to said displacement controlling value, and the wy that calculates is said actual strain value.

Can know by such scheme; A kind of material property parameter deriving means embodiment two provided by the invention is through obtaining and the corresponding displacement controlling value of said predetermined external force; The relation of said displacement controlling value of foundation and standard strain value draws with the corresponding standard strain value of said displacement controlling value and obtains the test strain value of said material to be tested under said predetermined external force effect; Said displacement controlling value, said standard strain value and said test strain value are calculated, draw the actual strain value.Thereby carry out data processing according to said stress value and said loss angle value; Obtain the dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity, and then the purposes of material to be tested is judged.

With reference to figure 5; It shows the structural representation of a kind of material property parameter deriving means embodiment three provided by the invention; Based on apparatus of the present invention embodiment two, said device can also comprise that Lik-Sang grows up to be a useful person 107, signal generator 108 and temperature controller 109, wherein:

Said Lik-Sang grows up to be a useful person 107, is used to generate predetermined external force, and said predetermined external force is put on material to be tested.

Wherein, the said Lik-Sang energisation mode that 107 pairs of materials to be tested apply said predetermined external force of growing up to be a useful person is modes such as stretching, compression, shearing or three-point bending.

Said signal generator 108 is used to generate the microwave signal of preset frequency, and said microwave signal is sent to said microwave divider 101.

Wherein, The frequency range of said microwave signal is: 1～1000Hz; 50 frequency test points can be set; Promptly generate the microwave signal of 50 Frequency points in said 1～1000Hz frequency range, respectively said microwave signal is carried out frequency division by said microwave divider 101 and handle, obtain corresponding frequency division data by said signal generator 108.

Said temperature controller 109, the test environment that is used for material to be tested provides temperature control, guarantees the temperature requirements in the performance parameter acquisition process of material to be tested.

Wherein, said temperature controller 109 can be made up of temperature sensor, heating wire, temperature controller, liquid nitrogen container, holding furnace, air compressor etc.The dut temperature range of control of material to be tested is :-150 ℃～450 ℃, in carrying out temperature controlled processes, the elevation rate of temperature is: 1～10 ℃/min.

Based on the foregoing description; Apparatus of the present invention embodiment three can also comprise protection system; Be used for other compositions of this device embodiment are carried out the many-side protection, for example: power overload protection, amplitude protection, left and right sides position limitation protection, overvoltage protection, low-voltage protection etc.

The foregoing description is in practical application; Can realize that said circuit control system comprises power detection circuitry, deformation detection circuitry, high-temperature control Circuits System, low temperature control circuit system, frequency drives control circuit system and computer interface circuit etc. through being integrated in circuit control system.

Wherein, Circuit control system comprises wave filter; Said wave filter is used for the precision of circuit control is adjusted; And apparatus of the present invention embodiment on the basis of existing wave filter through the adjustment circuit parameter, make said wave filter have input signal amplitude and advantage such as export that signal amplitude equates basically, frequency band is narrow, frequency input signal is identical with output signal frequency and the input signal phase place is consistent with phase of output signal.

In the computer system that is integrated with said first processor 103, can realize the performance parameter acquisition controlling of material to be tested, promptly control the response data of 102 pairs of materials to be tested of said first data acquisition unit and control through function control device is set.

A kind of material property parameter deriving means embodiment three provided by the invention carries out frequency division through the microwave signal of preset frequency that signal generator is produced to be handled; And utilize said microwave signal to obtain the response data of material to be tested under said Lik-Sang is grown up to be a useful person the predetermined external force effect that produces; Obtain said material to be tested according to said frequency division data and said response data and be in stress value and loss angle value in the said microwave signal; Simultaneously; Obtain and the corresponding displacement controlling value of said predetermined external force; The relation of said displacement controlling value of foundation and standard strain value draws with the corresponding standard strain value of said displacement controlling value and obtains the test strain value of said material to be tested under said predetermined external force effect; Said displacement controlling value, said standard strain value and said test strain value are calculated, draw the actual strain value.Further, through temperature controller and protection system the acquisition process of material property parameter to be tested is carried out temperature control and safeguard protection.Thereby carry out data processing according to said stress value and said loss angle value; Obtain the dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity, and then the purposes of material to be tested is judged.

With reference to figure 6, it shows the structural representation of a kind of viscoelastic spectrometer provided by the invention, and based on above-mentioned each embodiment, said viscoelastic spectrometer comprises material property parameter deriving means 601, drive unit 602 and bracing or strutting arrangement 603, wherein:

The function of said material property parameter device 601 sees also specifying of said apparatus embodiment, and this is no longer set forth;

Said drive unit 602 be used for the function of said material property parameter device is driven, thereby the performance parameter that realizes material to be tested is obtained.

Wherein, said drive unit comprises vibrator, power amplifier, drive link and nipper etc.

Wherein, the amplitude accuracy of said vibrator is 1 μ m, and peak swing is ± 10mm that the frequency of utilization scope is: 0～2KHz.

Wherein, said bracing or strutting arrangement 603 comprises tool housing, support etc., is used to keep the globality of viscoelastic spectrometer of the present invention.

A kind of viscoelastic spectrometer provided by the invention is handled through the microwave signal of preset frequency being carried out frequency division; And utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect; Obtain said material to be tested according to said frequency division data and said response data and be in stress value and loss angle value in the said microwave signal; Simultaneously; Obtain and the corresponding displacement controlling value of said predetermined external force; The relation of said displacement controlling value of foundation and standard strain value draws with the corresponding standard strain value of said displacement controlling value and obtains the test strain value of said material to be tested under said predetermined external force effect, and said displacement controlling value, said standard strain value and said test strain value are calculated, and draws the actual strain value.Thereby carry out data processing according to said stress value and said loss angle value; Obtain the dynamic mechanical and the thermodynamic property parameter of materials such as elastic modulus, loss modulus, dissipation factor, Young modulus, compliance, storage modulus, modulus of shearing and viscosity, and then the purposes of material to be tested is judged.

Need to prove that each embodiment in this instructions all adopts the mode of going forward one by one to describe, what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.

At last; Also need to prove; In this article; Relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint relation or the order that has any this reality between these entities or the operation.And; Term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability; Thereby make and comprise that the article of a series of key elements or equipment not only comprise those key elements; But also comprise other key elements of clearly not listing, or also be included as this article or equipment intrinsic key element.Under the situation that do not having much more more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within the article that comprise said key element or the equipment and also have other identical element.

Certainly, when embodiment of the present invention, can in same or a plurality of softwares and/or hardware, realize the function of each several part.

Description through above embodiment can know, those skilled in the art can be well understood to the present invention and can add the essential mode of the hardware platform of development certainly by software and realize.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can be come out with the embodied of part gordian technique in software product and the hardware platform.

More than a kind of material property parameter deriving means provided by the present invention and viscoelastic spectrometer have been carried out detailed introduction; Used concrete example among this paper principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as the restriction to the application.

Claims (10)

1. a material property parameter deriving means is characterized in that, this device comprises:

Microwave divider is used for that the microwave signal of preset frequency is carried out frequency division and handles, and generates the corresponding frequency division data of frequency with said microwave signal;

First data acquisition unit is used to utilize said microwave signal to obtain the response data of material to be tested under the predetermined external force effect;

First data processor is used for obtaining stress value and the loss angle value that said material to be tested is in said microwave signal according to said frequency division data and said response data.

2. device according to claim 1 is characterized in that, said device also comprises:

Pretreater is used to obtain preset and the corresponding displacement controlling value of said predetermined external force, and is used for drawing and the corresponding standard strain value of said displacement controlling value according to the relation of said displacement controlling value and standard strain value;

Second data acquisition unit is used to obtain the test strain value of said material to be tested under said predetermined external force effect;

Second data processor is used for said displacement controlling value, said standard strain value and said test strain value are calculated, and draws the actual strain value.

3. device according to claim 1 is characterized in that, said device also comprises:

Lik-Sang is grown up to be a useful person, and is used to generate predetermined external force, and said predetermined external force is put on material to be tested.

4. device according to claim 1 is characterized in that, said first data processor comprises:

First data extractor is used to extract the intermediate data of said response data, obtains the intermediate data array;

Second data extractor is used for said intermediate data array is carried out even number data and odd number data extract, obtains the first intermediate data array and the second intermediate data array respectively;

First data calculator is used for said frequency division data, the said first intermediate data array and the said second intermediate data array are calculated, and obtains stress value and loss angle value.

5. device according to claim 2 is characterized in that, said second data processor comprises:

The data markers device is used for said displacement controlling value, said standard strain value and said test strain value are designated as um, by and cy respectively;

Second data calculator; Be used to obtain the deviation cy-by of said test strain value cy and said standard strain value by, and obtain deviation ratio

according to said deviation cy-by and said standard strain value by

The deviate of

, the wy that calculates is said actual strain value.

6. device according to claim 1 is characterized in that, said first data acquisition unit comprises force transducer.

7. device according to claim 1 is characterized in that, said second data acquisition unit comprises displacement transducer and/or acceleration transducer.

8. device according to claim 1 is characterized in that, said device also comprises:

Temperature controller is used for to the test environment of material to be tested temperature control being provided.

9. device according to claim 1 is characterized in that, said device also comprises:

Signal generator is used to produce the microwave signal of said preset frequency.

10. a viscoelastic spectrometer is characterized in that, comprises like any described material property parameter deriving means of claim 1 to 9.

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