摘要
采用电子散斑干涉法和相移技术研究了铝合金材料结构内部柱状缺陷。设计了实验试件，并运用气压对试件进行加载，比较试件在相同直径，深度位置不同缺陷时的变形情况。利用有限元对实验进行模拟计算，与实验结果进行比较，结果小于8．81％。研究为结构检测提供了新的方法，拓展了电子散斑干涉法的应用领域。
The detection of inner columnar disfigurement in aluminium alloy structures is studied with ESPI and phase shift. Firstly some specimens were designed, and they were loaded by gas pressure. Deformations of these specimens which have the same diameters but different depths disfigurement were compare. And the finite element method was used to do the simulation calculation to compare the results of experiment, and the data between the simulation calculation and the experiment are very close . This study provides a new method that can detect inner columnar disfigurement and widens the application of ESPI.
出处
《计量学报》
EI
CSCD
北大核心
2008年第B09期191-194,共4页
Acta Metrologica Sinica
基金
国家自然科学基金（10672124）
上海市重点学科建设项目（B302）
关键词
计量学
电子散斑干涉法
相移技术
内部柱状缺陷
有限元法
气压加载法
Metrology
Hectronic speckle pattern interfermetry（ESPI）
Phase-shift
Inner columnar disfigurement
Gas pressure loading method
Finite element method
