Quantifying necking of rectangular tensile specimens using a mirror-based image analysis system

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• 作者：K.E. Yazzie ; J.J. Williams ; N. Chawla ; ^{nchawla@asu.edu}
• 关键词：Necking ; Digital image correlation ; Tension
• 刊名：Materials Letters
• 出版年：2012
• 期刊代码：59_0167577x
• 类别：ms
• 出版时间：1 May, 2012
• 卷：74
• 期：Complete
• 页码：243-246
• 文件大小：936 K

摘要

The cross-sectional area of a neck in a rectangular tensile specimen is not easily measured. In this paper, a technique for accurately quantifying instantaneous necking geometry of rectangular specimens, using a novel mirror setup and high speed camera, is discussed. The technique is non-contact and allows for the sides and front of the specimen to be imaged on one plane with one camera. For this study, a rectangular Sn tensile specimen was tested at 10 s^鈭?#xA0;1. DIC results and stress-strain behavior measured using the mirror fixture are briefly discussed.