角焊缝是工程中较为常见的焊缝形式，与对接焊缝相比，其特殊的结构和焊缝形式增加了超声检测的难度和工艺的复杂性。在分析角焊缝常规检测工艺的基础上，提出了应用超声相控阵检测工艺的方案，并以Y型焊缝为例制定了相控阵超声检测方案并进行了检测试验。检测结果验证了方案的可行性，为相控阵超声技术在角焊缝检测中的推广应用提供了经验。%Fillet weld is a common form of welding in engineering.However,comparison to butt weld,its special structure and welding type increase the difficulty and complexity of its testing.Based on the analysis of traditional ultrasonic testing,this paper comes up with phased array ultrasonic testing for fillets,and takes T and Y weld joint as example to throw light on the procedure to make testing plan for fillet.The results of the phased array ultrasonic testing of cracks in T and Y weld joints are also displayed to verify the testing plan.This research would provide experience to the application of phased array ultrasonic testing for fillet.
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