测定裂纹快速扩展速度的断裂丝栅法

Electrical Resistance Grid Technique for Measuring Fast Crack Propagation Velocity

本文描述了测试裂纹快速扩展速度的断裂丝棚法,采用记忆存贮示波器和计算机自动数据采集和记录系统以及采用自制的 GLC-1型高速裂纹扩展速度测试仪分别测试了300Mn 钢材料的动态裂纹扩展速度,结果吻合良好.

An electrical resistance grid technique for measuring fast crack propagation velocity is described in this paper.Accordingly,an apparatus(Type GLC-1)has been designed for this purpose.The dynamic crack propagation velocities in 300 Mn Steel are also determined by using a memory oscilloscope,connected with a computer,for acquiring and recording data automatically.Both results are in good agreement.