基于多元声发射特征的2.25Cr1Mo0.25V钢拉伸损伤评估  

Tensile damage assessment of 2.25Cr1Mo0.25V steel based on multivariate acoustic emission features

作　　者：李昊 谢旭梦 李清山 王俊杰 吴桐宇 雷博宇 柴孟瑜 LI Hao;XIE Xumeng;LI Qingshan;WANG Junjie;WU Tongyu;LEI Boyu;CHAI Mengyu(School of Chemical Engineering and Technology,Xi'an Jiaotong University,Xi'an 710049,China;Zhejiang Academy of Special Equipment Science,Hangzhou 310020,China;Key Laboratory of Special Equipment Safety Testing Technology of Zhejiang Province,Hangzhou 310020,China)

机构地区：[1]西安交通大学化学工程与技术学院,西安710049 [2]浙江省特种设备科学研究院,杭州310020 [3]浙江省特种设备安全检测技术研究重点实验室,杭州310020

出　　处：《无损检测》2025年第3期42-48,共7页Nondestructive Testing

基　　金：国家自然科学基金青年基金项目(22208258);浙江省市场监督管理局重点科技计划项目(ZD2025012)。

摘　　要：基于声发射技术开展了2.25Cr1Mo0.25V钢的单轴拉伸原位监测试验,利用多元声发射特征参数实现了拉伸损伤状态演变的全面准确评价。结果表明,多元声发射特征可以显著区分材料在拉伸过程中经历的不同损伤阶段。利用声发射质心频率与幅值、信息熵等时域参量的关联方法,可以为拉伸断裂失效提供可靠的安全预警指标。研究成果能够为金属材料与结构的声发射监测与失效预警提供参考。Insitu monitoring of uniaxial tensile tests for 2.25Cr1Mo0.25V steel was carried out based on the acoustic emission(AE)technology.The evolution of the tensile damage state was comprehensively and accurately evaluated by utilizing multivariate AE features.The results indicated that multivariate AE features could significantly distinguish different damage stages of materials during the tensile process.The correlation method between the AE centroid frequency and amplitude,information entropy,and other time-domain parameters could provide reliable safety warning indicators for tensile fracture failure.The research findings could serve as a reference for AE monitoring and failure warning of metallic materials and structures.

关 键 词：声发射 拉伸 损伤识别 特征参数 2.25Cr1Mo0.25V钢 

分 类 号：TG115.28[金属学及工艺—物理冶金]