Correlation between hole expansion ratio (HER) and notch tensile test

被引：15
|
作者：
Paul, Surajit Kumar [1 ]
机构：
[1] Indian Inst Technol Patna, Dept Mech Engn, Bihta 801106, Bihar, India
来源：
MANUFACTURING LETTERS | 2019年 / 20卷
关键词：
Hole expansion ratio; Notch tensile test; Uniaxial tensile test; Double edge notched specimen; Edge defect;
D O I：
10.1016/j.mfglet.2019.02.003
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hole edge deforms in uniaxial tensile manner during hole expansion test (HET), despite that hole expansion ratio (HER) cannot be determined directly from uniaxial tensile test (UTT). Hole normally prepared by punching process and many defect like crack, dimple etc. present at hole's edge. Presence of defects at hole edge dictates that HER is a fracture based parameter and cannot be determined from normal deformation experiments e.g. UTT. An excellent correlation is established in this study between HER and notch mouth opening displacement at peak load (Delta delta(m)) determined from notch tensile test on double edge notched specimen. (C) 2019 Society of Manufacturing Engineers (SME). Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：1 / 4
页数：4
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