The laser array spot thermography (LAST) is a fully non-contact and non-destructive method for the inspection of surface cracks with high efficiency. In this study, the detection capability of this method for the inspection of surface cracks in structures with curved surfaces is experimentally studied. The influence of the inspection angle on the crack imaging results is also investigated. The experiment results show that cracks in surface of the pipes with different dimeters can be detected and imaged by LAST.

中文翻译：

---

激光阵列点热成像技术可检测弯曲结构中的裂纹

激光阵列点热成像（LAST）是一种完全无接触且无损的方法，可以高效地检查表面裂纹。在这项研究中，实验研究了该方法对具有弯曲表面的结构中的表面裂纹的检测能力。还研究了检查角度对裂纹成像结果的影响。实验结果表明，通过LAST可以检测出不同直径的管道表面的裂纹并进行成像。