爆炸与冲击2018，Vol.38Issue(2)：309-315,7.DOI:10.11883/bzycj-2016-0271
可识别微层裂前界面的阶跃信号电探针测试技术
A step-signal electirc probe technology for recognising the front surface of micro-spall
摘要
Abstract
Effected by micro-jetting,the usual measuring technologies are hard to recognise the front surface of micro-spall of a metal sample that is of complex structure.In this paper,a step-signal electric-probe measuring technology is proposed to solve this problem.The abnormal discharging phenomenon of the conventional electric probe is analyzed under the effect of micro-jetting and the stepsignal producing circuit is designed.Explosive load experiments on Sn metal samples are carried out.The discharging signals of the conventional electric probe and step signal electric probe are compared and the useful information of the step signal is analyzed.Compared to X-ray photograph,we get that the position where the high voltage of step signal responses is the front surface of micro-spall.The results of the experiment show that the step-signal electric probe is able to distinguish the effect of micro-jetting and recognise the front surface of micro-spall of the metal samples under explosive load.关键词
信息处理技术/微层裂/电探针/阶跃信号Key words
information processing technology/micro-spall/electric probe/step signal分类
数理科学引用本文复制引用
文雪峰,王晓燕,王健,洪仁楷,胡杨,陈永涛..可识别微层裂前界面的阶跃信号电探针测试技术[J].爆炸与冲击,2018,38(2):309-315,7.基金项目
国家自然科学基金项目(11502253) （11502253）
中国工程物理研究院科学技术发展基金项目(2015B0201002) （2015B0201002）
