Journal of Engineering Research

As an advanced non-destructive testing technique, the Technique of Time of Flight Diffraction (TOFD) has demonstrated its unique advantages in the detection and evaluation of weld defects in petrochemical pressure pipelines. This paper explores how to use the TOFD technique to accurately detect and evaluate the potential defects in the welded joints of pressure pipelines in the petrochemical industry. Through experiments, the effectiveness of this method in improving the detection accuracy, shortening the detection time, and enhancing the reliability has been verified. The TOFD technique can effectively identify tiny defects and provide accurate information on the size and location, which provides a strong guarantee for the safe operation of the petrochemical industry. This paper also discusses the factors affecting the detection effect of TOFD and the corresponding optimization measures, aiming to promote the application and development of this technique in a wider range of fields.

Ultrasonic diffraction time difference method; TOFD; Weld defects; Non-destructive testing; Petrochemical pressure pipelines