基于激光超声的TA1工业纯钛塑性变形损伤检测  

Plastic deformation damage detection of TA1 industrial pure titanium by laser ultrasonics

作　　者：夏振鑫 陈丹 袁培龙 刘涛 殷安民[1,2] Xia Zhenxin;Chen Dan;Yuan Peilong;Liu Tao;Yin Anmin(School of Mechanical Engineering and Mechanics,Ningbo University,Ningbo 315211,China;Zhejiang Key Laboratory of Part Rolling Technology,Ningbo 315211,China;Institute of Intelligent Manufacturing Technology,Shenzhen Polytechnic University,Shenzhen 518055,China;Naval University of Engineering,Wuhan 430030,China;Zhejiang Shenji Titanium Industry Co.,Ltd,Huzhou 313306,China)

机构地区：[1]宁波大学机械工程与力学学院,宁波315211 [2]浙江省零件轧制成形技术研究重点实验室,宁波315211 [3]深圳职业技术大学,深圳518055 [4]海军工程大学,武汉430030 [5]浙江申吉钛业股份有限公司,湖州313306

出　　处：《仪器仪表学报》2024年第12期264-274,共11页Chinese Journal of Scientific Instrument

基　　金：浙江省自然科学基金(LY24E050001);国家自然科学基金(12304535);深圳市高等院校稳定支持计划(20231123154444001)项目资助。

摘　　要：采用激光超声纵波对均匀和不均匀塑性变形的TA1工业纯钛样品进行检测,利用CEEMD对信号进行降噪处理,获取激光超声特征值并进行成像,通过EBSD实验获取微观组织信息。首先对均匀塑性变形样品的成像图分析发现,随着变形量的增加,纵波声速和频域衰减系数整体呈下降趋势,时域衰减系数变化不大。随后,分析了微观组织与激光超声特征值相关性,通过加权平均法进行MFFP成像处理,MFFP整体分布呈下降趋势,与微观组织演变规律相对应。最后,对不均匀塑性变形样品进行分析,研究发现纵波声速和MFFP可以区分出不同变形区域,与微观组织区分区域相似,证实了激光超声MFFP可以用来评估TA1工业纯钛塑性变形损伤。Laser ultrasonics longitudinal wave is used to detect the uniform and non-uniform plastic deformation of TA1 industrial pure titanium samples,and CEEMD is used to denoise the signal,obtain the laser ultrasonics eigenvalue and imaging,and obtain the microstructure information by EBSD experiment.Firstly,the imaging analysis of uniform plastic deformation samples shows that with the increase of deformation,the longitudinal wave sound velocity and attenuation coefficient in the frequency domain decrease,while the attenuation coefficient in the time domain does not change much.Then,the correlation between the microstructure and laser ultrasonics eigenvalue is analyzed,and multi-feature fusion parameters(MFFP)imaging is processed by the weighted average method.The overall distribution of MFFP shows a decreasing trend,which corresponds to the evolution of microstructure.Finally,the analysis of non-uniform plastic deformation shows that the laser ultrasonics longitudinal wave velocity and MFFP can distinguish different deformation regions,which is similar to the microstructure distinction regions,confirming that laser ultrasonics MFFP can be used to evaluate the plastic deformation damage of TA1 industrial pure titanium.

关 键 词：激光超声 TA1工业纯钛 塑性变形损伤 多特征融合参数(MFFP) 

分 类 号：TH878[机械工程—仪器科学与技术] TG115.285[机械工程—精密仪器及机械] TB551[金属学及工艺—物理冶金]