Material mechanical performance testing platform for small-sized test sample under stretching bending composite loading mode
A composite loading and testing platform technology, applied in the direction of testing material strength by applying stable bending force, testing material strength by applying stable tension/compression, etc., can solve the problems of device structure and control complexity, cost increase, etc. Achieve good structural compatibility, avoid high cost, and have strong practicability
Active Publication Date: 2014-01-22
JILIN UNIV
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However, if multiple driving elements are used to drive, it will virtually complicate the structure and control of the device and increase the cost.
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[0027] The detailed content of the present invention and its specific implementation will be further described below in conjunction with the accompanying drawings.
[0028] see Figure 1 to Figure 6As shown, the test platform for the mechanical properties of materials in the tensile-bending composite loading mode of small samples of the present invention includes a driving module, a stretching module, a bending module and a control and detection module. 4 is connected with the two-way lead screw 27, and the stepper motor 1 transmits the driving torque to the two-way lead screw 27 through the deceleration of the worm, worm gear 3, and 4, and the step motor 1 is rigidly fixed on the bottom plate of the test platform through the flange plate 2 7, the worm 3 is sleeved on the output shaft of the stepping motor 1, and the worm gear 4 is fixed on the extended shaft end of the bidirectional screw 27; the positioning sleeve 5 is used to ensure the assembly characteristics of the worm ...
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The invention relates to a material mechanical performance testing platform for a small-sized test sample under a stretching bending composite loading mode and belongs to the field of material mechanical performance test. The material mechanical performance testing platform consists of four parts, namely a driving module, a stretching module, a bending module and a control detection module and can be used for carrying out uniaxial stretching test on the test sample or material mechanical performance test on the test sample under the stretching bending composite loading mode. The motion between the stretching module and the bending module is connected through an electromagnetic clutch; and during test, the loading time sequence of the bending module relative to the stretching module is controlled by controlling the power on / off of the electromagnetic clutch and further pull combined loads with different ratios are acquired indirectly. The material mechanical performance testing platform disclosed by the invention is novel in concept and compact in integral structure. For researching the mechanical performance of the test sample under the action of a random composite load for stretch bending, the invention provides an effective research means and strong practicability is obtained.
Description
technical field [0001] The present invention relates to the field of testing mechanical properties of materials, in particular to a testing device for mechanical properties of materials under multi-load mode, especially to a testing platform for testing mechanical properties of materials in tensile-bending composite loading mode for small specimens whose characteristic size is above centimeter level . Background technique [0002] The traditional test methods for testing the mechanical properties of materials mainly include tensile method, compression method, torsion method, bending method, etc., and the test devices used are relatively large in size, and the measured values are obtained by applying corresponding loads to standardized samples Various mechanical properties parameters of materials. However, with the development of modern science and technology, people have higher and higher requirements for the performance of modern mechanical structures. According to t...
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IPC IPC(8): G01N3/16G01N3/20
Inventor 赵宏伟程虹丙马志超张爱文杜朋李泽君李玥黎
Owner JILIN UNIV