14 Questions
What is the purpose of step 2 in the failure investigation process?
To photograph the failure before destruction for examination
What does metallographic examination reveal?
Depth of hardening and grain size
What is the purpose of microanalysis using energy dispersive X-ray spectroscopy (SEM/EDX)?
To analyze the phases and inclusions
What does NDT stand for in step 5 of the failure investigation process?
Non-destructive testing
What can be used to evaluate the magnitude of stress in the loading situation?
Metallographic examination
Which of the following can lead to a decrease in strength at high temperature?
Quenched and tempered materials
What is the key aspect of correct design mentioned in the text?
Designing for maximum stress including safety factor
Under what condition does elastic deformation occur in a material?
When subjected to a load exceeding yield strength
What type of material processing may create gas porosity and segregation?
Casting
What can prevent failure due to elastic deformation with unanticipated temperature changes?
Selecting a material with a sufficiently high modulus
Which type of material processing can create cracks, flaws, and distortion?
Cold working and forging
What property of a material is affected by a change in temperature, leading to elastic deformation at smaller loads?
Modulus
What can cause a material to fail without being permanently changed?
Elastic deformation exceeding yield strength
What type of material processing can create gas porosity and cracks?
Welding
This quiz covers the process of detecting, collecting data, and describing a failure situation in a structural component. It also includes aspects such as photographing the failure, visual examination of the damage, and the use of metallographic examination to reveal key characteristics of the material. The quiz also addresses crack initiation, fatigue striations, and fracture analysis.
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