用剪切散斑术研究SMA对金属材料形变的影响

基金项目:

航空科学基金资助

详细信息

Researching of the influence on metal material strain after embedding SMA by using a speckle shearing photography

摘要: 采用一种新的多通道散斑干涉计量术,研究形状记忆合金(SMA)埋入铜片对其应变的影响。这种新技术是在剪切散斑照相光路中,置入一光路转换器,实现多通道记录。在同一张记录介质上记录下试件形变的三种状态时的剪切散斑图,而且用全场滤波分析时,可同时显示各通道的试件变形信息,以进行不同状态变形的比较。文中给出理论分析及实验结果。结果表明,各通道散斑干涉条纹清晰,衬比高。条纹变化规律说明SMA埋入提高了金属材料抗应变能力。
- SMA /
- 金属材料 /
- 形变 /
- 多通道剪切散斑照相术
Abstract: With the help of a new multichannel speckle shearing photography,a study is conducted of influence on a copper thin slice strain after SMA is embedded. In this photography the rotating optical link converter is put in the light path to change the imaging positions so that the multichannel recording is realized.In one recording medium three speckle patterns of amamorphic state are recorded,and at the same time,with the help of full field filtering analysis,the amamorphic information of these channels be presented conveniently and compared easily.The paper gives theory analysis and experiment results. Which show that after embedding SMA,the matal material has stronger rigidity.
- SMA /
- metal material /
- deformation /
- multichannel speckle-shearing photography

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