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Fatigue testing machine applied to tension test piece and method thereof

A fatigue testing machine and test piece technology, applied in the direction of applying stable tension/pressure to test the strength of materials, instruments, measuring devices, etc., to achieve the effect of clear test purpose, strong test repeatability, and increased reliability

Inactive Publication Date: 2012-05-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very difficult and time-consuming to provide comprehensive and accurate mechanical calculations at the design stage. In order to ensure the rationality and reliability of the design, it is necessary to go through the iterative process of design-prototype-modification design many times

Method used

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  • Fatigue testing machine applied to tension test piece and method thereof
  • Fatigue testing machine applied to tension test piece and method thereof
  • Fatigue testing machine applied to tension test piece and method thereof

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Embodiment Construction

[0038] The fatigue testing machine suitable for tensile test pieces includes a fatigue force application mechanism 1, a preload force mechanism 2, a straightening roller mechanism 3, a test fixing frame 4, an auxiliary mechanism and a control system.

[0039]Fatigue force application mechanism 1 includes support 11, pneumatic muscle 12, connector 13, rear support frame 14, front support frame 15, steel wire rope 16, limit block 17, slider 18, guide rail 19 and sliding support plate 110, wherein: The support 11 is fixed on the sliding support plate 110, the rear end of the pneumatic muscle 12 is connected with the support 11, the front end of the pneumatic muscle 12 is connected with the connector 13, the connector 13 is connected with the rear support frame 14, and the rear support frame 14 is connected with the control The rear end of the tension sensor 63 of the system is connected, the front support frame 15 is connected with the front end of the tension sensor 63, the front...

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Abstract

The invention discloses a fatigue testing machine applied to a tension test piece. The fatigue testing machine is mainly used for a tensile test and a tensile fatigue test for mechanical components. The testing machine comprises a fatigue force application mechanism, a pretightening force mechanism, a straightening roller mechanism, a test fixing frame, an auxiliary mechanism and a control system. A power system of the fatigue testing machine comprises the fatigue force application mechanism and the pretightening force mechanism; the tensile force output by the power system is redirected by the straightening roller mechanism and is transmitted to the tension test piece; and the fatigue force application mechanism, the pretightening force mechanism, the straightening roller mechanism and the auxiliary mechanism of the fatigue testing machine are arranged on the test fixing frame. The fatigue testing machine has the advantages of adopting hybrid pneumatic and electric power as the powersystem of the fatigue testing machine, mastering numerous parameters including the maximum average displacement, the minimum average displacement, peak displacement, the maximum average tension, minimum average tension, minimum fatigue tension, frequency, accumulated test times, accumulated test time and the like, and providing a basis for optimization design of the tension test piece.

Description

technical field [0001] The invention belongs to a fatigue test device, in particular to a fatigue test device and a method for a tensile test piece. Background technique [0002] With the continuous improvement of automobile design level and manufacturing capacity, the stability of automobiles is also gradually improved, but it is inevitable that any car may break down, especially when driving, if the car breaks down and stops on the side of the road At this time, the tow hook on the bumper of the car has played an important role. [0003] If the strength of the bumper is not enough, just imagine such a situation, the tow hook suddenly breaks when the front trailer is dragging the car behind it uphill, and the car behind loses power, and danger will inevitably occur; When the car in front is turning, the bumper breaks because it cannot withstand the large centrifugal force, and the car behind will be thrown out of the curve, which is also very dangerous; especially for out...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/08G01N3/02
Inventor 翁国冲胡树根曹开元王艺
Owner ZHEJIANG UNIV
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