基于数字图像和声发射技术的4130X钢拉伸断裂损伤状态监测
Monitoring of tensile fracture damage state of 4130X steel based on DIC and acoustic emission technology
摘 要
4130X钢是压缩天然气高压气瓶组的主要材料，为得到其受载作用下的损伤演化规律，采用数字图像相关技术（DIC）与声发射技术相结合，开展了4130X钢拉伸断裂损伤状态监测试验。采用拉伸试件表面应变标准差（SD）表征其损伤演化规律，并与损伤过程声发射信号特征参数经历分析相结合，得到了4130X钢在弹性微损伤、塑性损伤、裂纹扩展状态下的声发射信号强度分布规律。试验结果表明，采用DIC和声发射技术相结合的分析方法，能够得到4130X钢拉伸断裂过程的损伤演化规律，可为其服役状态下的损伤状态监测提供参考。
数字图像相关技术
声发射
拉伸断裂损伤
4130X steel
DIC
acoustic emission
tensile fracture damage
Abstract
4130X steel is the main material of compressed natural gas high-pressure gas cylinders. In order to obtain the damage evolution law under load, digital image correlation technology (DIC) and acoustic emission technology are combined to monitor the tensile fracture damage state of 4130X steel. The surface strain standard deviation (SD) of the tensile specimen was used to characterize the damage evolution law, and combined with the experience analysis of the acoustic emission signal characteristic parameters of the damage process, the acoustic micro-damage, plastic damage, and crack growth of 4130X steel were obtained. The distribution of the intensity of the transmitted signal. The test results show that the analysis method combining DIC and acoustic emission technology can obtain the damage evolution law of 4130X steel during tensile fracture process, which can provide a reference for the damage state monitoring in service state.
中图分类号 TB31 TG115.28 DOI 10.11973/jxgccl202106005
所属栏目 试验研究
基金项目
收稿日期 2021/4/20
修改稿日期
网络出版日期
作者单位点击查看
联系人作者刘鹏(974049986@qq.com)
备注王恩和(1964-),男,本科,高级工程师,主要从事特种设备检验检测及无损检测技术的研究与应用工作
引用该论文: WANG Enhe,LIU Peng,LI Cairui,JIANG Peng. Monitoring of tensile fracture damage state of 4130X steel based on DIC and acoustic emission technology[J]. Nondestructive Testing, 2021, 43(6): 19～23
王恩和,刘鹏,李彩瑞,蒋鹏. 基于数字图像和声发射技术的4130X钢拉伸断裂损伤状态监测[J]. 无损检测, 2021, 43(6): 19～23
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【4】YAMAGUCHI I.A laser-speckle strain gauge[J].Journal of Physics E:Scientific Instruments,1981,14(11):1270-1273.
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【11】张昭, 肖迎春,王倩,等.TC18钛合金疲劳断裂过程声发射信号特征分析[J].航空工程进展,2015,6(4):502-506.
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