• CN:11-2187/TH
  • ISSN:0577-6686

›› 1990, Vol. 26 ›› Issue (1): 35-40.

• 论文 • 上一篇    下一篇

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焊接动态热应变云纹测试技术的研究——铝合金移动热源焊接热应变规律的特点分析

曹阳;关桥;刘纪达   

  1. 北京航空工艺研究所
  • 发布日期:1990-01-01

THE STUDY OF MOIRE TECHNIQUE FOR ASSESSING WELDING KINETIC THERMAL STRAINS ——THE CHARACTERISTIC FEATURES OF WELADING THERMAL STRAIN CYCLES OF ALUMINIUM ALLOYS

Cao Yang;Guan Qiao;Liu Jida   

  1. Beijing Aeronautical Manufacturing Technology Research Institute
  • Published:1990-01-01

摘要: 本文采用高温热应变云纹测试技术进行了铝合金移动热源加热平板中心熔敷焊接热应变过程的研究,通过试验获得了铝合金焊接动态热应变云纹图象的照片,用专用的焊接云纹条纹图象数据处理方法对条纹进行处理,获得了铝合金焊接动态热应变规律并分析了其特点。该试验研究结果为进一步定量地考虑焊接过程中各种力学现象(如焊接热裂纹、热应变脆化等)打下了基础,为建立材料焊接热应变数据库提供了可靠的技术数据。

关键词: 焊接力学, 铝合金, 热应变, 云纹测试技术

Abstract: In this paper, the developed Moiré technique for assessing high-temperature welding thermal strain is used to study welding thermal strain cycles of aluminum alloy plate with central depositing weld. The images of Moiré fringe of welding kinetic thermal strain field of aluminum alloy have been obtained from the Moiré experiment, and the data been analyzed by data processing method specially developed for the study of Moiré picture of welding thermal strains. It has been studied in the paper the characteristics of welding thermal cycles of aluminum alloy with moving heat sources, which laid a foundation for further research of various mechanical phenomenon during welding and provided reliable data for establishing the data base of welding thermal strains of materials.

Key words: 焊接力学, 铝合金, 热应变, 云纹测试技术