PProcess Safety and Environmental Protection3/27/2026Research on oil pipeline gradual defect detection system based on ultrasonic guided wave acoustic velocity sensingXiaocen Wang·Zhigang Qu·Yunkun Fu·Gaofeng Wang·Liqun Wu·Yang An·Hongzhi Sun·Mingrui Shi·Yu Chen·Jiahao Zhou·Shuo JinRead at Process Safety and Environmental ProtectionTagsNon-Destructive Testing TechniquesMechanical Engineering