CN103837595A - Device and method used for testing noise suppression performance of stone shock resistant water splash-proof materials - Google Patents
Device and method used for testing noise suppression performance of stone shock resistant water splash-proof materials Download PDFInfo
- Publication number
- CN103837595A CN103837595A CN201210474095.1A CN201210474095A CN103837595A CN 103837595 A CN103837595 A CN 103837595A CN 201210474095 A CN201210474095 A CN 201210474095A CN 103837595 A CN103837595 A CN 103837595A
- Authority
- CN
- China
- Prior art keywords
- exemplar
- steel ball
- place
- microphone
- testing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Abstract
The invention discloses a device and a method used for testing noise suppression performance of stone shock resistant water splash-proof materials. The device comprises a sample piece, a sample piece clamp, a clamp pedestal, a steel ball, a ball falling track, a track pedestal, and microphones; the sample piece is used for bearing a material sample to be tested; the sample piece clamp is used for clamping edges of the sample piece, and is arranged on the clamp pedestal; the sample piece is arranged slantwise to the horizontal plane; the ball falling track is arranged vertically to the ground, and the lower end of the ball falling track is right opposite to the center of the sample piece; the steel ball is used for free falling along the ball falling track, and hitting the center of the sample piece; one microphone is arranged right ahead the point hit by the steel ball, and the other microphone is arranged aside the point and is in a horizontal plane with the point; the two microphones are connected to Head DIC6B acquisition front terminal (or other noise acquisition front terminals) for acquisition of noise data. Testing is carried out in full anechoic rooms or semi- anechoic rooms; the steel ball with appropriate weight is subjected to free falling along the ball falling track, the center of the sample pieces is hit, and noise data is collected at the same time. The device is simple in structure, and high in stability, and is easy for assembling. Influence on the sample piece is less; and the method is convenient for noise testing of sample pieces which are made of different stone shock resistant water splash-proof materials and are arranged in different modes.
Description
Technical field
The present invention relates to the automobile noise control field, be specifically related to test the technology of preventing stone hitting, splash-proof material inhibition noise level.
Background technology
Along with the development of Hyundai Motor technology, the vibration noise performance of automobile has become one of important performance indexes of automobile.The rubble that doughnut tread is rolled knocks noise and the tire that lower body produces and dabbles the impact noise of lower body is had a strong impact on to passenger's comfortableness, preventing stone hitting, the application of splash-proof material (as PVC coating, damping glue etc.) on vehicle body can cushion rubble and the impact of current to lower body, effectively reduce stone and hit sound and splash.But in the design process of car load, due to large in the enterprising line correlation of vehicle body test difficulty, disturbing factor is many, is difficult to the different preventing stone hitting of the evaluation that quantizes, splash-proof material and the different arrangement inhibition level to noise.
Summary of the invention
Technical matters to be solved by this invention is to provide the device and method of a kind of rational test preventing stone hitting, splash-proof material inhibition noise level.
For solving the problems of the technologies described above, the present invention takes following technical scheme;
For testing a device for preventing stone hitting, splash-proof material inhibition noise level, it comprises exemplar, exemplar fixture, clamping fixture seat, steel ball, falling sphere track, rail bed, microphone; Described exemplar is used for carrying tested material, described exemplar fixture clamping exemplar edge, and be arranged on clamping fixture seat, exemplar and surface level are in tilted layout; Described falling sphere track is arranged in rail bed, and falling sphere track arranges perpendicular to ground, lower central area of rectifying exemplar; Described steel ball, for freely falling along falling sphere track, impacts exemplar center; Described microphone is arranged on steel ball and impacts dead ahead, place and side horizontal direction, and is connected to Noise Acquisition front end, as Head DIC6B gathers front end, for acquisition noise data.
Described exemplar fixture is arranged on by the bolt of both sides in the chute of clamping fixture seat, and according to circumstances the height to exemplar fixture and angle are adjusted.
Described exemplar and surface level are in tilted layout angle at 30 °～60 °.
The mode of carrying tested material on described clamping exemplar be by PVC material spraying in exemplar front, damping glue sticks in the exemplar back side.
One of described microphone is arranged in steel ball and impacts horizontal range 200mm place, dead ahead of place, is highly equal to steel ball and impacts place, and another is arranged in steel ball and impacts horizontal range 200mm place, left side, place, is highly equal to steel ball and impacts place.
Described microphone adopts microphone, and described falling sphere track adopts hollow pvc pipe.
Further, the present invention proposes to utilize above device to test preventing stone hitting, splash-proof material to suppress the method for noise level, and described test is carried out in whole elimination room or semianechoic room, and step is as follows:
(1) tested material is set on exemplar, exemplar is fixed with exemplar fixture,
(2) the exemplar fixture that has clamped exemplar is secured by bolts in the chute of clamping fixture seat, and adjusts as required the angle of inclination on fixture and ground;
(3) falling sphere track is fixed in rail bed, and makes to rectify exemplar central area under falling sphere track;
(4) microphone is arranged in to steel ball and impacts place's dead ahead horizontal level, be highly equal to steel ball and impact place; Be arranged in steel ball through another microphone and impact left side, place horizontal level, be highly equal to steel ball and impact place, microphone is by signal wire connecting test front end;
(5) steel ball of choosing appropriate mass according to test material is put into from falling sphere track top, and steel ball does the movement of falling object and impacts at exemplar center, records noise data, and carries out aftertreatment and analysis.
In described method, the set-up mode of concrete tested material is: by PVC material spraying, in exemplar front, damping glue sticks in the exemplar back side; Described exemplar and surface level are in tilted layout angle at 30 °～60 °.The position of microphone is: one be arranged in steel ball impact place horizontal range 200mm place, dead ahead, another be arranged in steel ball impact place on the left of horizontal range 200mm place.Choosing of steel ball is to choose according to test material, and quality is 2g～8g.
Adopt that apparatus structure of the present invention is simple, assembling easily, good stability, exemplar is disturbed little, adopt the exemplar that this device and method is convenient to adopting different preventing stone hittings, splash-proof material and different arrangements to carry out noise testing.
Brief description of the drawings
Fig. 1 is the structure drawing of device that test preventing stone hitting, splash-proof material suppress noise level:
Fig. 2 is the structural representation of holder part;
Fig. 3 is the schematic diagram of exemplar;
Fig. 4 A and Fig. 4 B are microphone arrangement position views.
In figure: 1 exemplar, 2 exemplar fixtures, 3 clamping fixture seats, 4 steel balls, 5 falling sphere tracks, 6 track supports, 7 rail bed; 8 first microphones, 9 second microphones.
Embodiment
Below in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4 A and Fig. 4 B, the invention process is elaborated.
While carrying out preventing stone hitting, the horizontal checkout of splash-proof material noise, in semianechoic room or whole elimination room, carry out.
First clamp exemplar 1(PVC material spraying in exemplar front with exemplar fixture 2, damping glue sticks in the exemplar back side), the dormant bolt hole (bolt hole spacing 50mm is simulation body in white spot pitch) that the uniform spacing of exemplar fixture 2 surrounding is 50mm, the hexagon socket head cap screw of 20 Φ 10mm of use carries out exemplar and grips.
Further the exemplar fixture 2 that has clamped exemplar 1 is secured by bolts in the chute in clamp base 3, and adjusts as required the angle of inclination on fixture and ground, 30 °～60 ° of angular setting scopes.
Further falling sphere track 5 is fixed on track support 6 by bolt, then falling sphere track support 6 is fixed in rail bed 7, falling sphere track 5 is wanted vertical ground, and moves on to position as shown in the figure, and falling sphere track is rectified exemplar 1 center for 5 times.
Further the first microphone 8 is arranged in to steel ball and impacts horizontal range 200mm place, dead ahead of place, guarantee that steel ball 4 impacts after upspringing can not damage microphone on exemplar, be highly equal to steel ball and impact place; Second microphone 9 is arranged in steel ball and impacts horizontal range 200mm place, left side, place, is highly equal to the steel ball place of impacting (microphone just impacts place to steel ball).Connect Head DIC6B and gather front end, for acquisition noise data.
Further choose the steel ball 4 of appropriate mass and put into from falling sphere track 5 tops, steel ball 4 does the movement of falling object and impacts at exemplar 1 center, records noise data and carries out aftertreatment and analysis.
Wherein, it is the hollow pvc pipe of Φ 25mm of 2m that falling sphere track 5 adopts length, and choosing quality according to test material is 2g～8g steel ball.
Claims (10)
1. for testing a device for preventing stone hitting, splash-proof material inhibition noise level, its feature is being, comprises exemplar, exemplar fixture, clamping fixture seat, steel ball, falling sphere track, rail bed, microphone; Described exemplar is used for carrying tested material, described exemplar fixture clamping exemplar edge, and be arranged on clamping fixture seat, exemplar and surface level are in tilted layout; Described falling sphere track is arranged in rail bed, and falling sphere track arranges perpendicular to ground, lower central area of rectifying exemplar; Described steel ball, for freely falling along falling sphere track, impacts exemplar center; Described microphone is arranged on steel ball and impacts dead ahead, place and side horizontal direction, and is connected to Noise Acquisition front end, for acquisition noise data.
2. according to claim 1 for testing the device of preventing stone hitting, splash-proof material inhibition noise level, it is characterized in that, described exemplar fixture is arranged on by the bolt of both sides in the chute of clamping fixture seat, and according to circumstances the height to exemplar fixture and angle are adjusted.
3. the device that suppresses noise level for testing preventing stone hitting, splash-proof material according to claim 2, is characterized in that, described exemplar and surface level are in tilted layout angle at 30 °～60 °.
4. according to the device that suppresses noise level for testing preventing stone hitting, splash-proof material described in claim 1,2 or 3, it is characterized in that, the mode of carrying tested material on described clamping exemplar be by PVC material spraying in exemplar front, damping glue sticks in the exemplar back side.
5. according to the device that suppresses noise level for testing preventing stone hitting, splash-proof material described in claim 1,2 or 3, it is characterized in that, one of described microphone is arranged in steel ball and impacts horizontal range 200mm place, dead ahead of place, highly be equal to steel ball and impact place, another is arranged in steel ball and impacts horizontal range 200mm place, left side, place, is highly equal to steel ball and impacts place.
6. the device that suppresses noise level for testing preventing stone hitting, splash-proof material according to claim 5, is characterized in that, described microphone adopts microphone.
7. the device that suppresses noise level for testing preventing stone hitting, splash-proof material according to claim 5, is characterized in that, described falling sphere track adopts hollow pvc pipe.
8. utilize the device to test preventing stone hitting described in claim 1,2 or 3, the method that splash-proof material suppresses noise level, described test is carried out in whole elimination room or semianechoic room, and step is as follows:
(1) tested material is set on exemplar, exemplar is fixed with exemplar fixture,
(2) the exemplar fixture that has clamped exemplar is secured by bolts in the chute of clamping fixture seat, and adjusts as required the angle of inclination on fixture and ground;
(3) falling sphere track is fixed in rail bed, and makes to rectify exemplar central area under falling sphere track;
(4) microphone is arranged in to steel ball and impacts place's dead ahead horizontal level, be highly equal to steel ball and impact place; Be arranged in steel ball through another microphone and impact left side, place horizontal level, be highly equal to steel ball and impact place, microphone is by signal wire connecting test front end;
(5) steel ball of choosing appropriate mass according to test material is put into from falling sphere track top, and steel ball does the movement of falling object and impacts at exemplar center, records noise data, and carries out aftertreatment and analysis.
9. method according to claim 8, is characterized in that, it is characterized in that, the set-up mode of described tested material is: by PVC material spraying, in exemplar front, damping glue sticks in the exemplar back side; Described exemplar and surface level are in tilted layout angle at 30 °～60 °; One of described microphone is arranged in steel ball and impacts horizontal range 200mm place, dead ahead of place, and another is arranged in steel ball and impacts horizontal range 200mm place, left side, place.
10. method according to claim 9, is characterized in that, it is characterized in that, the set-up mode of described tested material is: choose according to test material the steel ball that quality is 2g～8g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210474095.1A CN103837595B (en) | 2012-11-20 | 2012-11-20 | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210474095.1A CN103837595B (en) | 2012-11-20 | 2012-11-20 | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103837595A true CN103837595A (en) | 2014-06-04 |
| CN103837595B CN103837595B (en) | 2016-03-02 |
Family
ID=50801309
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210474095.1A Active CN103837595B (en) | 2012-11-20 | 2012-11-20 | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103837595B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683983A (en) * | 2018-07-09 | 2018-10-19 | 无锡吉兴汽车声学部件科技有限公司 | A kind of automobile bottom backplate impact noise test device |
| CN111208200A (en) * | 2020-02-28 | 2020-05-29 | 北京理工大学 | Ti-Al alloy liner structure consistency detection device and detection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589635A (en) * | 1994-08-08 | 1996-12-31 | Aerospatiale Societe Nationale Industrielle | Automated tapping process for complex parts used for detecting shallow faults |
| EP1531330A2 (en) * | 2003-11-13 | 2005-05-18 | IST Ingenieurdienst für sichere Technik GmbH | Method and device for monitoring changes or damages of pressurised containers during or after pressure testing |
| WO2012004969A1 (en) * | 2010-07-06 | 2012-01-12 | 信越化学工業株式会社 | Polycrystalline silicon rod, method for inspecting polycrystalline silicon rod, and method for manufacturing polycrystalline silicon rod |
| DE102011100370A1 (en) * | 2011-05-03 | 2012-11-08 | Bundesanstalt für Wasserbau | Method for non-damaging testing of bollard, particularly of platform bollard of port or sluice system, about its damage or its anchoring strength, involves contactless measuring vibration of bollard with microphone |
-
2012
- 2012-11-20 CN CN201210474095.1A patent/CN103837595B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5589635A (en) * | 1994-08-08 | 1996-12-31 | Aerospatiale Societe Nationale Industrielle | Automated tapping process for complex parts used for detecting shallow faults |
| EP1531330A2 (en) * | 2003-11-13 | 2005-05-18 | IST Ingenieurdienst für sichere Technik GmbH | Method and device for monitoring changes or damages of pressurised containers during or after pressure testing |
| WO2012004969A1 (en) * | 2010-07-06 | 2012-01-12 | 信越化学工業株式会社 | Polycrystalline silicon rod, method for inspecting polycrystalline silicon rod, and method for manufacturing polycrystalline silicon rod |
| DE102011100370A1 (en) * | 2011-05-03 | 2012-11-08 | Bundesanstalt für Wasserbau | Method for non-damaging testing of bollard, particularly of platform bollard of port or sluice system, about its damage or its anchoring strength, involves contactless measuring vibration of bollard with microphone |
Non-Patent Citations (1)
| Title |
|---|
| 齐烨: "汽车降噪非织造材料的研发与测试", 《中国优秀硕士学位论文全文数据库 工程科技Ⅰ辑》, 15 October 2009 (2009-10-15) * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108683983A (en) * | 2018-07-09 | 2018-10-19 | 无锡吉兴汽车声学部件科技有限公司 | A kind of automobile bottom backplate impact noise test device |
| CN111208200A (en) * | 2020-02-28 | 2020-05-29 | 北京理工大学 | Ti-Al alloy liner structure consistency detection device and detection method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103837595B (en) | 2016-03-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104568363B (en) | Dynamic impact test method and device for detecting crashworthiness of automobile parts | |
| CN107271139A (en) | A kind of Combined microphone array apparatus | |
| CN103837595B (en) | For testing the device and method of preventing stone hitting, splash-proof material restraint speckle level | |
| CN105865738A (en) | Impact test bed for automobile door trim panels | |
| CN204165643U (en) | The hand-held array that a kind of applicable internal car noise identifing source is measured | |
| CN206593875U (en) | test device | |
| CN203249779U (en) | Damper durability tester | |
| CN203310507U (en) | Power assembly suspension vibration noise testing system | |
| CN202350916U (en) | Noise detection equipment for automobile electric seat | |
| CN204924631U (en) | U -shaped bolt test device | |
| CN204368044U (en) | A kind of detecting instrument anchor fitting | |
| CN208860614U (en) | A kind of pilot system of large size high energy buffer | |
| CN213238850U (en) | Steel ball detector | |
| CN103612204A (en) | Grinding clamp and grinding method | |
| CN211010673U (en) | Fixing support for noise test microphone in vehicle | |
| CN210953307U (en) | Antiknock testing arrangement | |
| CN210774470U (en) | Test bed and system for measuring torque coefficient of high-strength bolt connection pair | |
| CN209879807U (en) | Pure electric vehicles fault diagnosis is with portable real standard platform convenient to it is fixed | |
| CN108760207B (en) | Device for evaluating reliability of wheel structure and reliability evaluation method | |
| CN206177599U (en) | Free state wheel vibration noise radiation characteristic testing arrangement that detrains | |
| CN206357117U (en) | Automobile body welding nut pressure-off power test fixture | |
| CN202162146U (en) | Vibration absorption supporting seat for vibrating screen | |
| CN211453308U (en) | Bonding strength tester for concrete processing | |
| CN206160883U (en) | Auto instrument panel assembly detects frock | |
| CN216012952U (en) | Strength and durability detection fixing device of car side wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |