信息来源：暂无发布日期: 2015-03-31浏览次数:

Naichang LIN^1,a Xiaoxiang YANG^2,b

¹College of Mechanical Engineering and Automation; Fuzhou University; Fuzhou 350001;China

²Xiamen Inspection Institute of Special Equipments; Xiamen Fujian 361000; China

^aemail:nchlin@126.com,^bemail:yangxx@fzu.edu.cn

Keywords: Time of flight diffraction method; Lateral wave; Searching clustering algorithm

Abstract.TOFD (Time of flight diffraction) is suitable for the weld defects in the detection and has been widely used in the vessel of pressure. To widen the range of detection in TOFD and the removal of the background wave, a new lateral wave suppression method for TOFD image is proposed. Firstly, ultrasound TOFT image signal of the model is established. Secondly, a new searching clustering algorithm is proposed. Then, it is used to lateral wave suppression. The results show that the lateral wave can be eliminated effectively even if lateral waves are shaking seriously.