双曝光全息法测量摩擦焊接头残余应力引起的法向变形

基金项目: 中国科学院西安光机所瞬态光学技术国家重点实验室资助(YAK9708)

Measuring Normal Deformation Produced by Residual-stress in Friction Welding Joint Using Double-exposure Holography

摘要: 分分析了测量摩擦焊接头表面法向变形的原理。在光路满足一定的条件下,双曝光全息图所再现出的干涉条纹反映了待测件表面法向变形的大小。试验中,以调Q红宝石激光器为光源,拍摄了摩擦焊接头的双曝光全息图。本文将其全息干涉条纹通过CCD图象采集系统数字化地采集数据,通过微机对图象数据进行处理,得到了待测件表面法向变形的大小。
- 双曝光全息法 /
- 摩擦焊接头 /
- 法向变形
Abstract: The principle of measuring normal deformation of the surface of friction welding joint is analyzed. When the experimental system meets some conditions, the interferometric fringe obtained from double-exposure hologram reflects the amplitude of normal deformation. In experiment, a Q-switched ruby laser is used as light source, and a double exposure hologram of friction welding joint is obtained. In this paper, the holographic interferometric fringe is collected through a CCD image process system and stored into computer. After using computer to process these data, the amplitude of normal deformation of the surface of friction welding joint is obtained.
- double-exposure holography /
- friction welding joint /
- normal deformation

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