Comparison studies on the effectiveness of ultrasonic inspection and radiographic inspection in internal defects detection on welded joints / Maziidah Hamidi.

The purpose of this project is to investigate the effectiveness of ultrasonic and radiographic method. The effectiveness is measured from the ability of each methods and techniques used to detect internal defects in seven steel welded joints inspected. All three single Vs, two double Vs and two curved joints go through two Non-Destructive Testing methods, the ultrasonic and radiographic method. For ultrasonic method, both conventional ultrasonic and advanced ultrasonic, called the phased array, are used. The difference between these techniques is the type of transducers and instrument used. This makes them different through the ability of detection. Radiographic method uses gamma ray in the. Radiation process on test specimens and scanned using Computerized Radiography technique. Results obtained for both inspection methods is compared to find out the difference of effectiveness.