CN102353599A - Piezoelectricity-driven high-frequency fatigue testing machine - Google Patents
Piezoelectricity-driven high-frequency fatigue testing machine Download PDFInfo
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- CN102353599A CN102353599A CN2011101502942A CN201110150294A CN102353599A CN 102353599 A CN102353599 A CN 102353599A CN 2011101502942 A CN2011101502942 A CN 2011101502942A CN 201110150294 A CN201110150294 A CN 201110150294A CN 102353599 A CN102353599 A CN 102353599A
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- 238000009661 fatigue test Methods 0.000 title claims abstract description 15
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 241000446313 Lamella Species 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 3
- 239000013078 crystal Substances 0.000 abstract 4
- 238000010586 diagram Methods 0.000 description 6
- 125000004122 cyclic group Chemical group 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000005452 bending Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 2
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- 230000035080 detection of muscle activity involved in regulation of muscle adaptation Effects 0.000 description 1
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- 238000005272 metallurgy Methods 0.000 description 1
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Abstract
The invention discloses a piezoelectricity-driven high-frequency fatigue testing machine. The piezoelectricity-driven high-frequency fatigue testing machine is characterized in that a piezoelectric oscillator 7 is utilized as a driving force source; the piezoelectric oscillator 7, a preset load adjustment mechanism 6, an elastic loading device 5, a sample 4 needing to be tested, and a clamping unit 3 form a resonant system; and under external alternating voltage, deformation of the piezoelectric oscillator 7 is amplified by system resonance and is translated into a alternating load to act on the sample 4 needing to be tested so that fatigue detection and test are realized. The piezoelectric oscillator 7 can adopt a common double-crystal plate bended oscillator structure or a single-crystal plate bended oscillator structure shown in the figure 2 of the patent specification, and also can adopt a structure combined from a single-crystal plate oscillator and a double-crystal plate oscillator in series or in parallel.
Description
Technical field
The invention belongs to fatigue detecting and test field, be specifically related to hard brittle material and the fatigue experimental device of small parts under a kind of little amplitude, the high frequency stress.
Background technology
The detection of fatigue behaviours such as HF fatigue testing machine is widely used in the tension and compression of metal and non-metallic member, reverses, bending, spot corrosion; The kind equipment that range of application is the widest, quantity is maximum in belonging to fatigue detecting and testing is in field extensive application such as machinery, electronics, Aeronautics and Astronautics, metallurgy.But along with the continuous development of science and technology with industrial level, component of machine or micro-structure spare that hard brittle material constituted work in 200Hz above little amplitude, high frequency stress mostly.The appearance of these property members makes it can correspondingly imitate its actual condition and exploitation with fatigue detecting machine of greater efficiency becomes and becomes more and more important.And existing HF fatigue testing machine all is to adopt Electromagnetic Drive or Servo Drive; Owing to all need work under the system resonance state; Be subjected to the restriction of system impedance and magnetic resistance; The general work frequency is not more than 100Hz; Simultaneously controlled poor, the problem such as resonance stability is bad, loading accuracy is not high of ubiquity amplitude all is inappropriate for detection small and hard brittle material member, high frequency primary structure member at present.
The present invention proposes to utilize the drive force source of piezoelectric vibrator (PZT, PLZT or PMN) as HF fatigue testing machine, and structure forms and a kind ofly less amplitude, upper frequency are provided and are applicable to the fatigue experimental device that detects with hard brittle material member, high frequency primary structure member small thus.
Summary of the invention
Piezoelectric driven HF fatigue testing machine of the present invention; It is characterized in that adopting piezoelectric vibrator as drive force source; Be provided with simultaneously and preset load adjusting mechanism 6, elasticity loader 5 etc.; When in running order; They and tested sample 4, bending test anchor clamps 3 etc. are common to constitute resonator system; Act on 7 last times of piezoelectric vibrator as the driving voltage of outside alternation thus; The distortion of piezoelectric vibrator 7 acts on the sample 4 through the system resonance amplification and after being converted into alternate load, thereby realizes torture test.
Preset the load adjusting mechanism and be in order in advance sample to be carried out quiet loading and to be provided with, its critical piece comprises wheel disc 606, presets load adjustment screw rod 604, back timber 605, guide pillar 601, load seat 602, lock-screw 603 etc.
The elasticity loader is for sample being carried out the dynamic load of alternation and be provided with, and its critical piece comprises inertial mass 503, upper and lower plates spring 501 and trip bolt 504 etc.
The invention has the advantages that: according to the system intialization state; Can simulate the Study of Cyclic Loading that forms lower frequency; Also can form the above high frequency of 300Hz, small size loading condition; Realize higher Study of Cyclic Loading speed and control accuracy; Volume simple in structure is little; Do not produce magnetic interference fully and do not accept magnetic interference yet, be more suitable for small and Study of Cyclic Loading and high frequency high cycle fatigue Performance Detection precision component than traditional electromagnetic drive type HF fatigue testing machine.
Description of drawings
Fig. 1 is a preferred embodiment of the present invention;
Fig. 2 is a piezoelectric vibrator structural representation of the present invention; Wherein Fig. 2 a is a twin lamella oscillator structure, and Fig. 2 b is a single-chip oscillator structure.
Fig. 3 a is the load adjusting mechanism synoptic diagram that presets of the present invention, and Fig. 3 b is a load locking mechanism synoptic diagram of the present invention;
Fig. 4 is an elasticity loader synoptic diagram of the present invention;
The 1-yielding rubber, 2-pedestal, 3-anchor clamps, 4-sample; 5-elasticity loader, 6-presets the load adjusting mechanism, 7-piezoelectric vibrator, 8-abutment ring; The 9-vibration-sensing rod, 10-loading head, 11-load transducer, 501-elastic leaf springs; 502-loading head fastening nut, 503-inertial mass, 504-leaf spring trip bolt, 601-guide pillar; 602-loads seat, the 603-lock-screw, and 604-adjusts screw rod, 605-back timber; The 606-wheel disc, 607-piezoelectric vibrator trip bolt, 701-piezoelectric ceramics, 702-elastic base plate
Embodiment
The embodiment that provides below in conjunction with accompanying drawing describes in further detail structure of the present invention and principle.
With reference to Fig. 1, HF fatigue testing machine of the present invention as drive force source, and presets that load adjusting mechanism 6, elasticity loader 5, tested sample 4, bending test anchor clamps 3 etc. are common to constitute resonator system by a piezoelectric vibrator 7 that converts electric energy to mechanical energy.Pedestal 2 is supported by 4 yielding rubbers 1, is used for the anchor clamps 3 of clamping bend specimen 4, by the requirement that is installed of sample 4, can in the chute of pedestal 2, move and fixes; Rotation roulette 606 makes and loads seat 602 and slide up and down along guide pillar 601, and applies pretightning force through abutment ring 8, piezoelectric vibrator 7, elasticity loader 5, loading head 10 to sample 4, thereby the initial stage load to sample is provided.When lock-screw 603 was tightened, initial stage load was converted into the static load to sample 4, participated in the torture test to sample 4.Thus when the driving voltage of outside alternation acts on piezoelectric vibrator 7; The distortion of piezoelectric vibrator 7 acts on the sample 4 through the system resonance amplification and after being converted into alternate load; And by the static and dynamic stress data of load transducer 11 extractions, thereby realize fatigue detecting and test.
With reference to Fig. 2, piezoelectric vibrator structural representation of the present invention.Piezoelectric vibrator 7 can adopt upper and lower surface all to post the crooked oscillator structure of twin lamella of piezoelectric ceramics, and (Fig. 2 a); Also can adopt single face to post the crooked oscillator structure (Fig. 2 b) of single-chip of piezoelectric ceramics; In order to increase driving force, the unitized construction that also can adopt a plurality of single-chip oscillators or twin lamella oscillator etc. and connect or be connected in series.
With reference to Fig. 3 a, the load adjusting mechanism synoptic diagram that presets of the present invention.Wherein back timber 605 is fixed in the top of guide pillar 601, rotation roulette 606 can make the rotation of adjustment screw rod 604 and by with being threaded of back timber 605, drives and load seat 602 and slide up and down, thereby the initial stage that forms sample 4 loads along guide pillar 601.
With reference to Fig. 3 b, load locking mechanism synoptic diagram of the present invention.After being added to the initial stage load of stipulating on the sample 4 through preceding method, screwing lock-screw 603 and make loading seat 602 a certain positions that are fixed on guide pillar 601, then initial stage load is locked on the sample 4.Load seat 602 below, connecting the periphery of piezoelectric vibrator 7 through coupling ring 8, and piezoelectric vibrator 7 is connected with elasticity loader 5 through vibration-sensing rod 9;
With reference to Fig. 4, elasticity loader synoptic diagram of the present invention.Elasticity loader 5 is connected with inertial mass 503 usefulness screws 504 by upper and lower elastic leaf springs 501 and forms, and leaf spring 501 is connected with piezoelectric vibrator 7 through vibration-sensing rod 9 on it, and following leaf spring is connected with loading head 10.The elasticity of elasticity loader 5 can be by the adjustment such as material, thickness, diameter and fixed form of leaf spring 501, and the moment of inertia can be adjusted by the quality and the frame mode of inertial mass 503.The elasticity loader is the main adjusting mechanism of high frequency fatigue test apparatus system resonant condition of the present invention, finally is added on dynamic loading, amplitude and frequency etc. on the sample 4, all is by the elastic force of elasticity loader 5 and inertial force decision.
Claims (4)
1. high frequency fatigue test device; It is characterized in that adopting piezoelectric vibrator 7 as drive force source; Load adjusting mechanism 6, elasticity loader 5, tested sample 4, anchor clamps 3 etc. are common to constitute resonator system with presetting; Externally under the alternating voltage; The distortion of piezoelectric vibrator 7 acts on the sample through the system resonance amplification and after being converted into alternate load, thereby realizes fatigue detecting and test.
2. according to claim 1 described high frequency fatigue test device; It is characterized in that: piezoelectric vibrator 7 can adopt the crooked oscillator structure of general twin lamella (Fig. 2 a) or the crooked oscillator structure (Fig. 2 b) of single-chip, the unitized construction that also can adopt single-chip oscillator, twin lamella oscillator and connect or be connected in series;
3. according to claim 1 described high frequency fatigue test device, it is characterized in that: preset the load adjusting mechanism and be in advance sample being carried out static state and load and be provided with, its primary structure comprises and presets load adjusting mechanism and load locking mechanism two parts;
4. according to claim 1 described high frequency fatigue test device, it is characterized in that: elasticity loader 5 is for sample being carried out the alternation dynamic load and being provided with; Its primary structure comprises inertia adjustment piece, elastic mechanism two parts; Wherein inertia adjustment piece 503 is adjusted through the inertial mass of plug-in pouring weight or replacing different quality, and the elasticity of elastic mechanism can be adjusted through the thickness equidimension of adjustment leaf spring 501.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110150294.2A CN102353599B (en) | 2011-06-07 | 2011-06-07 | Piezoelectric driven HF fatigue testing machine |
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| CN201110150294.2A CN102353599B (en) | 2011-06-07 | 2011-06-07 | Piezoelectric driven HF fatigue testing machine |
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| CN102353599B CN102353599B (en) | 2015-09-30 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928305A (en) * | 2012-11-14 | 2013-02-13 | 中国建筑第八工程局有限公司 | Resonant mode composite material sheet fatigue tester |
| CN104034613A (en) * | 2014-06-24 | 2014-09-10 | 天津三英精密仪器有限公司 | Material vibration load test system for X-ray microscopic imaging |
| CN104198166A (en) * | 2014-07-16 | 2014-12-10 | 广东工业大学 | Characteristic test device for ultrasonic vibrator of sandwich piezoelectric transducer |
| CN104483216A (en) * | 2014-12-31 | 2015-04-01 | 华侨大学 | Ultrasonic-vibration based microscale testing device for material impact fatigue |
| CN104849156A (en) * | 2015-06-03 | 2015-08-19 | 马鞍山聚力科技有限公司 | Hard alloy round cutter vibratory frequency detection device |
| CN105181481A (en) * | 2015-10-14 | 2015-12-23 | 哈尔滨工程大学 | Three-point bending fatigue testing machine |
| CN105784515A (en) * | 2015-12-08 | 2016-07-20 | 四川大学 | Vacuum ultrasonic vibration fatigue experimental system |
| CN107631946A (en) * | 2017-09-07 | 2018-01-26 | 河海大学 | A kind of testing machine pre-add power apparatus |
| CN109990999A (en) * | 2019-04-30 | 2019-07-09 | 吉林大学 | Underneath type drives piezoelectricity HF fatigue testing machine |
| CN115266434A (en) * | 2022-09-26 | 2022-11-01 | 常州岚玥新材料科技有限公司 | Carbon-carbon composite material anti-fatigue detection equipment |
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2011
- 2011-06-07 CN CN201110150294.2A patent/CN102353599B/en active Active
Patent Citations (6)
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| DE2939923A1 (en) * | 1979-10-02 | 1981-04-16 | Carl Schenck Ag, 6100 Darmstadt | MATERIAL TESTING MACHINE WITH PIEZOELECTRIC DRIVE |
| US4869111A (en) * | 1987-10-02 | 1989-09-26 | Ngk Spark Plug Co., Ltd. | Cyclic fatigue testing apparatus |
| WO1998003848A1 (en) * | 1996-07-18 | 1998-01-29 | Proceq S.A. | Method and device for characterizing the elastic and/or plastic behaviour of materials |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102928305B (en) * | 2012-11-14 | 2015-04-15 | 中国建筑第八工程局有限公司 | Resonant mode composite material sheet fatigue tester |
| CN102928305A (en) * | 2012-11-14 | 2013-02-13 | 中国建筑第八工程局有限公司 | Resonant mode composite material sheet fatigue tester |
| CN104034613A (en) * | 2014-06-24 | 2014-09-10 | 天津三英精密仪器有限公司 | Material vibration load test system for X-ray microscopic imaging |
| CN104198166A (en) * | 2014-07-16 | 2014-12-10 | 广东工业大学 | Characteristic test device for ultrasonic vibrator of sandwich piezoelectric transducer |
| CN104483216A (en) * | 2014-12-31 | 2015-04-01 | 华侨大学 | Ultrasonic-vibration based microscale testing device for material impact fatigue |
| CN104849156B (en) * | 2015-06-03 | 2017-06-13 | 马鞍山聚力科技有限公司 | Hard alloy round cutting-off tool shakes frequency detection means |
| CN104849156A (en) * | 2015-06-03 | 2015-08-19 | 马鞍山聚力科技有限公司 | Hard alloy round cutter vibratory frequency detection device |
| CN105181481A (en) * | 2015-10-14 | 2015-12-23 | 哈尔滨工程大学 | Three-point bending fatigue testing machine |
| CN105784515A (en) * | 2015-12-08 | 2016-07-20 | 四川大学 | Vacuum ultrasonic vibration fatigue experimental system |
| CN107631946A (en) * | 2017-09-07 | 2018-01-26 | 河海大学 | A kind of testing machine pre-add power apparatus |
| CN109990999A (en) * | 2019-04-30 | 2019-07-09 | 吉林大学 | Underneath type drives piezoelectricity HF fatigue testing machine |
| CN115266434A (en) * | 2022-09-26 | 2022-11-01 | 常州岚玥新材料科技有限公司 | Carbon-carbon composite material anti-fatigue detection equipment |
| CN115266434B (en) * | 2022-09-26 | 2022-11-29 | 常州岚玥新材料科技有限公司 | Carbon-carbon composite material anti-fatigue detection equipment |
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| CN102353599B (en) | 2015-09-30 |
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Inventor after: Yang Zhigang Inventor after: Tian Xiaochao Inventor after: Jie Meng Inventor after: Lei Qing Inventor before: Yang Zhigang Inventor before: Jie Meng Inventor before: Lei Qing |
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Effective date of registration: 20180911 Address after: 213164 Science and Technology Branch of Changzhou Science and Education City, Jiangsu Province Patentee after: Changzhou angde Industrial Equipment Technology Co. Ltd. Address before: 130012 No. 2699 Qianjin Street, Jilin, Changchun Patentee before: Jilin University |
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Address after: 213164 room 2521, North Tower, Hui Yan building, Changzhou science and Education Town, 18 Wujin Road, Wujin, Changzhou. Patentee after: Changzhou angde Industrial Equipment Technology Co. Ltd. Address before: 213164 North Building of Huiyan Building, No. 18 Changwuzhong Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: Changzhou angde Industrial Equipment Technology Co. Ltd. |
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Address after: 213164 North Building 2523, Huiyan building, Changzhou science and Education City, No. 18, Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee after: Changzhou angde Industrial Equipment Technology Co. Ltd. Address before: 213164 room 2521, North Tower, Hui Yan building, Changzhou science and Education Town, 18 Wujin Road, Wujin, Changzhou. Patentee before: Changzhou angde Industrial Equipment Technology Co. Ltd. |
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