摘要
本文用电子散斑干涉及剪切电子散斑干涉技术（ＥＳＰＩ／ＳＥＳＰＩ）实现了薄壁旋转壳及球形压力容器焊缝缺陷的现场实时检测，给出了实际压力容器焊缝缺陷的无损检测结果与理论分析；将ＥＳＰＩ系统与旋转椭球曲面反射镜检测装置结合，获得了被测容器焊缝３６０°全方位准确成象及ＥＳＰＩ全场缺陷检测；通过预制缺陷的ＥＳＰＩ、ＳＥＳＰＩ无损检测与理论计算，完成了孔洞型缺陷与裂纹型缺陷的变形与梯度分析．
Electronic speckle pattern interferometry (ESPI) and shear electronic speckle pattern interferometry (SESPI) have been used to evaluate on site seam weld defects of a rotating shell and spherical pressure vessels.The experimental results and theory analyses are given.The 360° imaging and defect detection of seam weld have been accomplished by using the ESPI system and a rotating ellipsoidal mirror.Finally,deformation and its gradient analyses in cases of hole and crack defects have been finished by evaluating the prefabricated artificial defects on hemispherical shell pressure vessels with ESPI and SESPI system.
出处
《光子学报》
EI
CAS
CSCD
1998年第10期911-918,共8页
Acta Photonica Sinica
基金
中国工程物理研究院院外科学技术基金
关键词
压力容器
焊缝缺陷
电子散斑干涉
无损探测
Pressure vessels
Seam weld defects
ESPI
SESPI
Nondestructive evaluation
