| 焊接接头裂纹尖端应变场的云纹干涉法 |
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| 引用本文： | 康继东,张玉凤,霍立兴. 焊接接头裂纹尖端应变场的云纹干涉法[J]. 焊接学报, 1996, 17(2): 99-103 |
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| 作者姓名： | 康继东 张玉凤 霍立兴 |
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| 作者单位： | 南京航空航天大学，天津大学 |
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| 摘 要： | 以海洋平台用钢Ａ５３７采用ＬＢ５２ＮＳ焊条施焊的高匹配中心裂纹试件为例，本文引入一种新的光力学方法－反射式贴片云纹干涉法及其剪切技术，对该方法的基本原理与试验技术进行了系统论述，并结合小型宽板拉伸试验成功地应用于接头裂纹尖端应变场的测试，由于该方法有高灵敏度（虚栅频率≥６００Ｌ／ｍｍ）和极宽的可调量程，对横向应变场的测试更为有利。
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| 关 键 词： | 接头 云纹干涉 应变场 裂纹 焊接 |
| 收稿时间： | 1995-08-26 |
| 修稿时间： | 1996-03-06 |
Investigation on Crack Tip Strain Field of Welded Joint by Moire Interferometry |
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| Kang Jidong,Zhang Yufeng and Huo Lixing. Investigation on Crack Tip Strain Field of Welded Joint by Moire Interferometry[J]. Transactions of The China Welding Institution, 1996, 17(2): 99-103 |
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| Authors: | Kang Jidong Zhang Yufeng Huo Lixing |
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| Affiliation: | Nanjing University of Aeronautics & Astronauties |
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| Abstract: | A new photo-mechanics method named Moire interferometry of reflected sticking film and its shearing technique are introduced in this paper. The basic principle and its technique are stated also. As an example, the crack tip strain field is measured for an overmetching-weld tension specimen with centre crack of A 537 steel used for offshore platform welded by LB52NS electrode. Because of its high sensityvity(virtual grating frequency is 750lmm) and wide variable measurement scale, the method is more useful for the measurement of honrizontal strain field. |
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| Keywords: | s: welded joint moire interferometry displacement field strain field crack |
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