An energy approach to estimate yield strength by small punch testing

摘要：

Small punch test (SPT) is a miniature sample test technique which can evaluate in-service material properties with an almost non destructive method. In this paper, an elastic deformation energy method based on SPT for the yield stress estimation is presented. This new method consists of the determination of the yield strength by measuring the energy beneath the load-displacement (L-D) curve in the elastic deformation stage. The elastic deformation domain is defined by measuring the elastic reverse displacement during an unloading phase. The Youngs modulus E of SPT (Estp) is obtained by an analytical analysis according to the SPT condition. Good correlation has been determined between the elastic deformation energy and the yield strength.

关键词： Small-punch test Yield strength Youngs modulus E

作者: Xiaohui Zou Kaishu Guan Tong Xu

作者单位: Key Laboratory of Pressure Systems and Safety, Ministry of Education, School of Mechanical and Power China Special Equipment Inspection & Research Institute, Beijing 100013, China

会议类型: 国际会议

会议名称: 2011 International Symposium on Structural Integrity 2011国际结构完整性学术研讨会--核工程结构完整性技术 ISSI 2011

会议地点: 合肥

会议语种:英文

页码: 101-105

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）