Absolute stress measurement in steel members using the LCR waves cross-correlation method

摘要：

　　The absolute stress in structural steel members is an important parameter to judge the performance of structures.Traditionally,the stress is measured by establishing the stress monitoring system,which is not the absolute value.The longitudinal critically refracted(Lcr)wave has been regarded as the best candidate for stress measurement.In this study,the Lcr wave cross-correlation method is proposed for absolute stress measurement in steel members.Specifically,the Lcr wave time-of-flight(TOF)measurement formula is derived and the stress measurement method is proposed.A steel member is measured using the proposed method and the traditional peak value method.The results show that the cross-correlation method can accurately measure the Lcr wave TOF without filtering the noise signal,and the stress measurement results are better than the peak value method.

关键词： the cross-correlation method longitudinal critically refracted (Lcr) wave absolute stress measurement steel members acoustoelasticity

作者: Jingbo He Zuohua Li Jun Teng Ying Wang

作者单位: School of Civil and Environment Engineering,Shenzhen Graduate School,Harbin Institute of Technology, Department of Civil and Environmental Engineering,University of Surrey,Guildford,UK

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 1458-1463

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）