金属蜂窝构件光学方法的无损检测研究  

RESEARCH OF OPTICAL METHOD FOR NON-DESTRUCTIVE DETECTION ON METALLIC HIVELIKE ASSEMBLY

作　　者：陆福一[1] 张朝晖[1] 李恩普[1] 陈长乐[1] 

机构地区：[1]西北工业大学应用物理系

出　　处：《航空学报》1994年第2期169-174,共6页Acta Aeronautica et Astronautica Sinica

摘　　要：用理论和实验分析比较了全息干涉术和剪切散斑干涉术对金属蜂窝构件的无损检测。并从理论上推导了剪切散斑干涉条纹的强度分布，证明了随着加载量的增大，条纹变密的程度较全息干涉条纹缓慢。剪切散斑干涉条纹灵敏度只有较大的可调性，加载范围大为加宽。实验观察与理论分析一致。The speckle shearing interferometry applied in optical nondestructive detection on compesite materials is accompanied with a significant wide range of loading that willl be of bene-fit to such whole-field observations that no defect could be avoided Intensity distribution of shearing interferometric frin ge(equistrain fringe)is presented in a more general way,which shows that its density increases more slowly than that of holographic interferometric fringe(equi一displacement fringe)as the loading increases.An adjustable sensitivity characterized by the shearing fringe itself will additionally broaden the loading range greatly.Experimental obserVations agree with the analyses.

关 键 词：全息干涉测量 剪切 无损检验 

分 类 号：V262.7[航空宇航科学与技术—航空宇航制造工程]