MCM 602 Non-Destructive Testing Exam 2022

About this paper

MCM 602: University of Buea, College of Technology, End of Semester Examination, Second Semester 2021/2022, Instructors Foba/Tala: Section A, interpreting an ultrasonic A-scan trace (identifying input signal, background/noise echoes, flaw echo and back-wall echo, and estimating flaw depth as a fraction of material thickness), comparing three A-scan traces taken from the same component at different times to diagnose a developing and then critical internal flaw and advise a client accordingly, and comparing Ultrasonic Testing with Acoustic Emission testing with a recommendation for continuous bridge safety monitoring; Section Two, a concise account of liquid penetrant testing (principle, procedure, reagents, scope, advantages, limitations), a concise account of magnetic particle testing (principle, procedure, scope, advantages, limitations), and radiographic-technique terminology (exposure, image contrast, film density, image definition), their determining factors, and a worked industry application example (pipeline girth-weld radiography).