Dynamic mechanical property testing device for amorphous alloy and method thereof
A technology of dynamic mechanics and amorphous alloys, applied in measuring devices, scientific instruments, strength characteristics, etc., can solve difficult problems such as the study of dynamic mechanical properties of amorphous alloys
Active Publication Date: 2021-10-08
BEIJING INSTITUTE OF TECHNOLOGYGY
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AI-Extracted Technical Summary
Problems solved by technology
The invention discloses a dynamic mechanical property testing device for amorphous alloy and a method thereof. The device comprises a loading rod, a buffer device, a sample, a strain gauge, a red copper sheet, a super dynamic strain gauge and a computer data acquisition system, and the loading rod comprises an impact rod, an incident rod, a transmission rod and an absorption rod which are coaxially arranged in sequence. According to the invention, improvement is carried out on the basis of an existing Hopkinson bar experiment, and a waveform shaper (red copper sheet) with a specific size, a cushion block, a limiting ring and a recovery device are added, so that the problems of non-uniform stress, non-constant strain rate deformation, stress wave dispersion, difficulty in recovery and the like caused by high strength and poor plasticity of an amorphous alloy are solved; the strain rate of the amorphous alloy sample to be tested can be changed by changing the diameter and the thickness of the red copper sheet of the shaper, and the dynamic mechanical property of the amorphous alloy under the high strain rate can be accurately obtained.
Strain gaugeStress wave +8
- Experimental program(2)
- Comparison scheme(1)
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