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以具有高灵敏度的半导体应变片作为应力转换元件,设计了一套简单而实用的示冲击试验系统.为了解决动态冲击载荷的标定问题,本文提出了一种数值计算标定法,它在本质上属于动态标定方法.采用数值计算标定法为计算机应用于冲击检测提供了便利条件,试验结果表明,该系统能够清晰地显示冲击断裂过程的全部信息,特别是能够灵敏地反映材料组织状态及缺口形状对冲击断裂韧脆倾向的影响,为冲击断裂分析提供了很有用的资料.
In order to solve the calibration problem of dynamic impact load, a numerical calibration method is proposed in this paper, which is essentially a The method of dynamic calibration is applied to the numerical calculation and calibration method, which provides a convenient condition for the computer to apply the impact test. The experimental results show that the system can clearly display all the information of the impact fracture process, especially the material state and notch shape The impact of impact fracture toughness and brittleness, the impact fracture analysis provides a useful information.