Impact dynamic tension test method and device thereof of ring laser
A laser shock and tensile test technology, applied in the direction of measuring devices, instruments, scientific instruments, etc., can solve the problems of complex loading method process, high test cost, and many influencing factors, and achieve low test cost, few influencing factors, and high test efficiency. The effect of simple process
Inactive Publication Date: 2012-11-07
JIANGSU UNIV
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The method makes the strain rate of the material relatively low, which is indirect stretching, and the loading method is complicated, with many influencing factors, complicated calculation and high test cost
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[0029] Combine below figure 1 Describe in detail the details and working conditions of the specific device proposed by the present invention.
[0030] Such as figure 1 As shown, the described a kind of laser shock dynamic tensile test device includes: high-power pulsed laser 49, 45° total reflection mirror E24, spot adjustment device 50, spoke bracket 30, fixed distance support 31, clamp A29, clamp B38 , target material 37, optical glass sheet 34, guide rail A36, guide rail B44, absorbing layer 35, trigger 46, stepper motor 45, computer 47, laser power supply 48, stress sensor, optical extensometer 51, auxiliary displacement sensor; The high-power pulse laser 49 includes: total reflection mirror 1, KD*P crystal 2, polarizer 3, aperture stop 4, YAG crystal A5, YAG crystal B9, YAG crystal C15, YAG crystal D17, YAG crystal E20, YAG crystal F22, output mirror 6, isolator 7, beam expander A8, beam expander B14, beam expander C19, 45° total reflection mirror A10, 45° total reflect...
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The invention relates to an impact dynamic tension test method and a device thereof of a ring laser, relating to the technical field of dynamic tension mechanics performance test of materials. In the invention, a high power ring pulse laser is adopted to contain a test-piece in a hollow part of a laser beam; and a ring pulse laser gets through the test-piece via the hollow part and impacts a target, so that the test-piece arranged between a bracket and the target acquires instant tension so as to complete the impact dynamic tension test of the test-piece. The method and the device of the invention are used for for measuring dynamic stress strain relation of the materials under ultrahigh strain state, the device has simple structure, simple and convenient test process, and can perform direct dynamic tension test; and the method and the device can perform the dynamic tension test of the materials under the conditions of different high strain rates and ultrahigh strain rates, thereby having low cost and good application prospect.
Description
technical field [0001] The invention relates to the technical field of material dynamic tensile mechanical performance testing, in particular to a method and a device capable of realizing high strain rate tensile testing under laser shock wave loading dynamic conditions. Background technique [0002] In a series of practical problems in a wide range of fields such as engineering technology, military technology and scientific research, and even in daily life, people will encounter various problems of explosions and impact loads, and it can be observed that objects in The mechanical responses under explosion and impact loads are often significantly different from those under static loads. Understanding the mechanical responses of materials under impact loading conditions will greatly contribute to the engineering applications and engineering designs of these materials. In addition, numerical simulation has played an important role in engineering design, and the premise of nume...
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IPC IPC(8): G01N3/313
Inventor 姜银方钱晓明方雷姜文帆管海兵张永康汪建敏
Owner JIANGSU UNIV