CN104483219A - Material fatigue process integrated test system - Google Patents
Material fatigue process integrated test system Download PDFInfo
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- CN104483219A CN104483219A CN201410713769.8A CN201410713769A CN104483219A CN 104483219 A CN104483219 A CN 104483219A CN 201410713769 A CN201410713769 A CN 201410713769A CN 104483219 A CN104483219 A CN 104483219A
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Abstract
The invention discloses a material fatigue process integrated test system which comprises a fatigue test bed, a sensing device and a control system, wherein the fatigue test bed comprises a platform, a clamping device and a reciprocating device; one end of a tested piece is fixedly arranged on the clamping device, and the other end of the tested piece is connected with a tail end actuating piece of the reciprocating device; the sensing device comprises a stress and strain transducer, an infrared temperature sensor and an acoustic emission sensor; the stress and strain transducer and the acoustic emission sensor are arranged on the surface of the tested piece; the infrared temperature sensor is arranged within the part away from the surface of the tested piece by a certain distance; the control system comprises a control module and a signal acquiring and processing module; and the stress and strain transducer, the infrared temperature sensor and the acoustic emission sensor are connected with the signal acquiring and processing module. According to the system disclosed by the invention, the problem that an integrated test system capable of researching characteristics of different metal materials in the fatigue process by virtue of the experiment is absent at present is solved, and the system has the advantages of multiple integrated test items, simplicity in operation and high degree of automation.
Description
Technical field
The present invention relates to a kind of fatigue of materials process synthesis test macro.
Background technology
Under alterante stress effect, the principal mode that hardware destroys is fatigue damage.Fatigue damage is the process of a gradual change, first there is localized micro crackle at the component stress place of concentrating, along with alterante stress increases action time, microfissure is assembled communication gradually and is formed macroscopic cracking, when reaching certain limit, component can rupture suddenly, and the above-mentioned failure phenomenon that because of metal alterante stress causes, is called the fatigue of metal.
Statistics shows, the inefficacy of mechanical component, about have about 70% to be that fatigue causes, and the accident great majority caused is catastrophic.Due to the process that fatigue damage is a gradual change, and along with the change of some features (as ess-strain, temperature, acoustic emission) in whole process, therefore, study some features in different metal material fatigue process by experiment, utilize distinctive information in different materials fatigue process, realizing the on-line monitoring of structure or Parts degree of injury, being of great significance avoiding the generation tool of major accident.But, still lack the integrated test system by some features in experimental study different metal material fatigue process at present.
Summary of the invention
For solving the problem lacked at present by the integrated test system of some features in experimental study different metal material fatigue process, the invention provides a kind of fatigue of materials process synthesis test macro.
The technical solution used in the present invention is as follows:
A kind of fatigue of materials process synthesis test macro, comprise fatigue test board, sensing device and control system, described fatigue test board comprises platform, clamp device and reciprocator, described clamp device and reciprocator are arranged on platform, one end of test specimen is fixed on clamp device, the other end is connected with the end-effector of reciprocator, described sensing device comprises stress strain gauge, infrared temperature sensor and calibrate AE sensor, described stress strain gauge and calibrate AE sensor are arranged on the surface of test specimen, described infrared temperature sensor is arranged on apart from the certain distance of test specimen surface, described control system comprises control module and signals collecting and processing module, described stress strain gauge, infrared temperature sensor and calibrate AE sensor are all connected with signals collecting and processing module.
Preferably, described reciprocator comprises motor, crank, connecting rod, slide block and guide rail, and described motor and guide rail are fixed on platform, and the power output shaft of motor is connected with slide block with connecting rod by crank, described slide block is arranged on guide rail, and one end of test specimen is connected with slide block.
The Fatigue Failure Process under different inflection frequency for ease of simulation and research test specimen, preferably, described motor is buncher, and described buncher is connected with the control module of control system.
Preferably, described buncher is frequency control motor, and described control system is computing machine.
For ease of measuring the size and Orientation of the principal strain of test specimen in Fatigue Failure Process, preferably, described stress strain gauge is ess-strain flower.
For the work avoiding stress strain gauge to stop infrared temperature sensor, preferably, described stress strain gauge is arranged on test specimen and estimates the side of surface, breakdown zone away from infrared temperature sensor.
Monitoring test specimen of attaching most importance to estimates the change of temperature field of breakdown zone, and preferably, described infrared temperature sensor is arranged on to be estimated in the vertical certain distance in surface, breakdown zone with test specimen.
Preferably, the direction of motion of the end-effector of described reciprocator and the length direction of test specimen vertical.
For ease of using, preferably, described clamp device is vice.
Preferably, described vice is fixed on platform by stationary fixture.
Alternatively, described reciprocator comprises cylinder, and the actuating station of the piston rod of described cylinder is connected with one end of test specimen.
The present invention is by being fixed on clamp device by one end of test specimen, the other end is driven by the end-effector of reciprocator and does bending action repeatedly, thus the simulation achieved test specimen Fatigue Failure Process, simultaneously, pass through stress strain gauge, infrared temperature sensor and calibrate AE sensor measure the ess-strain of test specimen in whole Fatigue Failure Process in real time, temperature field and characteristics of Acoustic Emission, and by signals collecting and processing module, acquisition and processing is carried out to measuring-signal, thus obtain the ess-strain of test specimen material in whole Fatigue Failure Process of different materials itself, the data message of temperature field and characteristics of Acoustic Emission, to set up the inner link between different materials fatigue damage degree and these characteristic informations, realize the on-line monitoring of different materials structural member or parts degree of injury, for m of e etc. provides foundation, further, by changing the input energy (as changed the rotating speed of motor) of reciprocator, also can obtain the data message of the ess-strain of test specimen material in whole Fatigue Failure Process under different input energy itself, temperature field and acoustic emission, thus summarize different materials, the different relation inputted between energy and material fatigue damage degree, build the relational model between complete material fatigue damage and external action parameter, for predicting that the security performance of big machinery or material itself provides theoretical and Data support later.
The invention provides a kind of fatigue of materials process synthesis test macro, solve the problem lacked at present by the integrated test system of some features in experimental study different metal material fatigue process, there is the advantage that comprehensive survey project is many, simple to operate, automaticity is high, the research to various material fatigue damage can be widely used in.
Accompanying drawing explanation
Fig. 1 is the structural representation of the fatigue test board of the embodiment of the present invention;
Fig. 2 is the structural principle schematic diagram of the embodiment of the present invention;
In figure: 1, platform; 2, motor base; 3, motor; 4, crank; 5, connecting rod; 6, slide block; 7, guide rail; 8, test specimen; 9, vice; 10, stationary fixture; 11, stress strain gauge; 12, infrared temperature sensor; 13, calibrate AE sensor; 89, vice stiff end.
Embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in Fig. 1 ~ 2, the fatigue of materials process synthesis test macro of the present embodiment comprises fatigue test board, sensing device and control system (not shown), described fatigue test board comprises platform 1, clamp device and reciprocator, described clamp device and reciprocator are installed on the platform 1, one end of test specimen 8 is fixed on clamp device, the other end is connected with the end-effector of reciprocator, described sensing device comprises stress strain gauge 11, infrared temperature sensor 12 and calibrate AE sensor 13, stress strain gauge 11 and calibrate AE sensor 13 are arranged on the surface of test specimen 8, infrared temperature sensor 12 is arranged on to be estimated in the certain distance of surface, breakdown zone apart from test specimen 8, described control system comprises control module and signals collecting and processing module, stress strain gauge 11, infrared temperature sensor 12 is all connected with signals collecting and processing module with calibrate AE sensor 13.
Preferably, described reciprocator comprises motor 3, crank 4, connecting rod 5, slide block 6 and guide rail 7, motor 3 and guide rail 7 are fixed on the platform 1, the power output shaft of motor 3 is connected with slide block 6 with connecting rod 5 by crank 4, slide block 6 is arranged on guide rail 7, and one end of test specimen 8 is connected with slide block 6.
Alternatively, described reciprocator comprises cylinder, and the actuating station of the piston rod of described cylinder is connected with one end of test specimen.
The Fatigue Failure Process under different inflection frequency for ease of simulation and research test specimen, preferably, motor 3 is buncher, and described buncher is connected with the control module of control system.Obviously, motor 3 also realizes speed-regulating function by connection reducer.
Further, for ease of speed governing and control, preferably, described buncher is frequency control motor, and described control system is computing machine.
For ease of measuring the size and Orientation of the principal strain of test specimen in Fatigue Failure Process, preferably, stress strain gauge 11 is ess-strain flower.
For the work avoiding stress strain gauge to stop infrared temperature sensor, preferably, described stress strain gauge 11 is arranged on test specimen and estimates the side of surface, breakdown zone away from infrared temperature sensor.
Monitoring test specimen of attaching most importance to estimates the change of temperature field of breakdown zone, and preferably, infrared temperature sensor 12 is arranged on to be estimated in the vertical certain distance in surface, breakdown zone with test specimen 8.
Preferably, calibrate AE sensor 13 is arranged on the surface of test specimen two ends annex.
Preferably, described reciprocator the direction of motion of end-effector (in the present embodiment, end-effector is slide block 6) vertical with the length direction of test specimen 8.Obviously, also can, according to test needs, make the direction of motion of end-effector (in the present embodiment, end-effector is slide block 6) consistent with the length direction of test specimen 8 or form an angle.
For ease of using, preferably, described clamp device is vice 9, and vice 9 is fixing on the platform 1 by stationary fixture 10.
The present invention is by being fixed on clamp device by one end of test specimen, the other end is driven by the end-effector of reciprocator and does bending action repeatedly, thus the simulation achieved test specimen Fatigue Failure Process, simultaneously, pass through stress strain gauge, infrared temperature sensor and calibrate AE sensor measure the ess-strain of test specimen in whole Fatigue Failure Process in real time, temperature field and characteristics of Acoustic Emission, and by signals collecting and processing module, acquisition and processing is carried out to measuring-signal, thus obtain the ess-strain of test specimen material in whole Fatigue Failure Process of different materials itself, the data message of temperature field and characteristics of Acoustic Emission, to set up the inner link between different materials fatigue damage degree and these characteristic informations, realize the on-line monitoring of different materials structural member or parts degree of injury, for m of e etc. provides foundation, further, by changing the input energy (as changed the rotating speed of motor) of reciprocator, also can obtain the data message of the ess-strain of test specimen material in whole Fatigue Failure Process under different input energy itself, temperature field and acoustic emission, thus summarize different materials, the different relation inputted between energy and material fatigue damage degree, build the relational model between complete material fatigue damage and external action parameter, for predicting that the security performance of big machinery or material itself provides theoretical and Data support later.
The invention provides a kind of fatigue of materials process synthesis test macro, solve the problem lacked at present by the integrated test system of some features in experimental study different metal material fatigue process, there is the advantage that comprehensive survey project is many, simple to operate, automaticity is high, the research to various material fatigue damage can be widely used in.
By reference to the accompanying drawings embodiments of the invention are explained in detail above; but the present invention is not limited to above-described embodiment; in the ken that those of ordinary skill in the art possess; various change can also be made obtaining under the prerequisite not departing from present inventive concept, also should be considered as protection scope of the present invention.
Claims (10)
1. a fatigue of materials process synthesis test macro, it is characterized in that: comprise fatigue test board, sensing device and control system, described fatigue test board comprises platform, clamp device and reciprocator, described clamp device and reciprocator are arranged on platform, one end of test specimen is fixed on clamp device, the other end is connected with the end-effector of reciprocator, described sensing device comprises stress strain gauge, infrared temperature sensor and calibrate AE sensor, described stress strain gauge and calibrate AE sensor are arranged on the surface of test specimen, described infrared temperature sensor is arranged on apart from the certain distance of test specimen surface, described control system comprises control module and signals collecting and processing module, described stress strain gauge, infrared temperature sensor and calibrate AE sensor are all connected with signals collecting and processing module.
2. fatigue of materials process synthesis test macro according to claim 1, it is characterized in that: described reciprocator comprises motor, crank, connecting rod, slide block and guide rail, described motor and guide rail are fixed on platform, the power output shaft of motor is connected with slide block with connecting rod by crank, described slide block is arranged on guide rail, and one end of test specimen is connected with slide block.
3. fatigue of materials process synthesis test macro according to claim 2, is characterized in that: described motor is buncher, and described buncher is connected with the control module of control system.
4. fatigue of materials process synthesis test macro according to claim 3, it is characterized in that: described buncher is frequency control motor, described control system is computing machine.
5. fatigue of materials process synthesis test macro according to claim 1, is characterized in that: described stress strain gauge is ess-strain flower.
6. fatigue of materials process synthesis test macro according to claim 1, is characterized in that: described stress strain gauge is arranged on test specimen and estimates the side of surface, breakdown zone away from infrared temperature sensor.
7. fatigue of materials process synthesis test macro according to claim 1, is characterized in that: described infrared temperature sensor is arranged on to be estimated in the vertical certain distance in surface, breakdown zone with test specimen.
8. fatigue of materials process synthesis test macro according to claim 1, is characterized in that: the direction of motion of the end-effector of described reciprocator is vertical with the length direction of test specimen.
9. fatigue of materials process synthesis test macro according to claim 1, is characterized in that: described clamp device is vice.
10. fatigue of materials process synthesis test macro according to claim 9, is characterized in that: described vice is fixed on platform by stationary fixture.
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| CN201410713769.8A CN104483219A (en) | 2014-11-28 | 2014-11-28 | Material fatigue process integrated test system |
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| CN201410713769.8A CN104483219A (en) | 2014-11-28 | 2014-11-28 | Material fatigue process integrated test system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107167367A (en) * | 2017-05-15 | 2017-09-15 | 河南科技大学 | A kind of hot modeling test machine |
| US10200089B2 (en) | 2017-06-07 | 2019-02-05 | General Electric Company | Sensor system and method |
| US10225026B2 (en) | 2016-06-27 | 2019-03-05 | General Electric Company | System for piston rod monitoring |
| CN113252794A (en) * | 2021-06-03 | 2021-08-13 | 沈阳工业大学 | Acoustic emission crack monitoring method and system |
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| CN201138292Y (en) * | 2008-01-05 | 2008-10-22 | 湖北唯思凌科装备制造有限公司 | Torsion bar fatigue test platform of power-driven steering mechanism for automobile |
| JP2011047691A (en) * | 2009-08-25 | 2011-03-10 | Shimadzu Corp | Electromagnetic-type actuator and material testing apparatus |
| CN202562820U (en) * | 2012-05-03 | 2012-11-28 | 长安大学 | Tension-compression fatigue test device simulating bituminous pavement temperature stress |
| CN204302128U (en) * | 2014-11-28 | 2015-04-29 | 中国海洋大学 | Fatigue of materials process synthesis test macro |
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2014
- 2014-11-28 CN CN201410713769.8A patent/CN104483219A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201138292Y (en) * | 2008-01-05 | 2008-10-22 | 湖北唯思凌科装备制造有限公司 | Torsion bar fatigue test platform of power-driven steering mechanism for automobile |
| JP2011047691A (en) * | 2009-08-25 | 2011-03-10 | Shimadzu Corp | Electromagnetic-type actuator and material testing apparatus |
| CN202562820U (en) * | 2012-05-03 | 2012-11-28 | 长安大学 | Tension-compression fatigue test device simulating bituminous pavement temperature stress |
| CN204302128U (en) * | 2014-11-28 | 2015-04-29 | 中国海洋大学 | Fatigue of materials process synthesis test macro |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10225026B2 (en) | 2016-06-27 | 2019-03-05 | General Electric Company | System for piston rod monitoring |
| CN107167367A (en) * | 2017-05-15 | 2017-09-15 | 河南科技大学 | A kind of hot modeling test machine |
| US10200089B2 (en) | 2017-06-07 | 2019-02-05 | General Electric Company | Sensor system and method |
| CN113252794A (en) * | 2021-06-03 | 2021-08-13 | 沈阳工业大学 | Acoustic emission crack monitoring method and system |
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Application publication date: 20150401 |