Module 8 Corrosion and Failure Analysis Objective Eight

Question 1

Non-destructive testing

Answer 1

used for detecting surface cracks or internal discontinuities.
ex: Liquid Penetrant (LPI) Magnetic Particle (MPI), Radiography (RT), Ultrasonic (UT)

Question 2

Mechanical testing

Answer 2

used at/near the failure site, then the results are compared to the specifications
ex: charpy, tensile and bending tests, hardness tests

Question 3

Stress Analysis

Answer 3

calculations may be used to confirm that the working stress is below both the UTS and the endurance limit for fatigue loading

Question 4

metallographic tests

Answer 4

used for searching for clues regarding cracking, microstructure, morphology or distortion

Question 5

Fractographic analysis

Answer 5

gives a detailed examination of the fracture surface. Can be done on either a macroscopic or microscopic scale to determine the fracture type, fracture origin and mechanism