Podcast
Questions and Answers
What is the purpose of step 2 in the failure investigation process?
What is the purpose of step 2 in the failure investigation process?
- To select samples and prepare them
- To analyze the phases and inclusions
- To visually examine the damage
- To photograph the failure before destruction for examination (correct)
What does metallographic examination reveal?
What does metallographic examination reveal?
- Fracture modes and crack initiation
- Chemical analysis
- Depth of hardening and grain size (correct)
- Microanalysis using energy dispersive X-ray spectroscopy
What is the purpose of microanalysis using energy dispersive X-ray spectroscopy (SEM/EDX)?
What is the purpose of microanalysis using energy dispersive X-ray spectroscopy (SEM/EDX)?
- To reveal depth of hardening and grain size
- To analyze the phases and inclusions (correct)
- To visually examine the damage
- To select samples and prepare them
What does NDT stand for in step 5 of the failure investigation process?
What does NDT stand for in step 5 of the failure investigation process?
What can be used to evaluate the magnitude of stress in the loading situation?
What can be used to evaluate the magnitude of stress in the loading situation?
Which of the following can lead to a decrease in strength at high temperature?
Which of the following can lead to a decrease in strength at high temperature?
What is the key aspect of correct design mentioned in the text?
What is the key aspect of correct design mentioned in the text?
Under what condition does elastic deformation occur in a material?
Under what condition does elastic deformation occur in a material?
What type of material processing may create gas porosity and segregation?
What type of material processing may create gas porosity and segregation?
What can prevent failure due to elastic deformation with unanticipated temperature changes?
What can prevent failure due to elastic deformation with unanticipated temperature changes?
Which type of material processing can create cracks, flaws, and distortion?
Which type of material processing can create cracks, flaws, and distortion?
What property of a material is affected by a change in temperature, leading to elastic deformation at smaller loads?
What property of a material is affected by a change in temperature, leading to elastic deformation at smaller loads?
What can cause a material to fail without being permanently changed?
What can cause a material to fail without being permanently changed?
What type of material processing can create gas porosity and cracks?
What type of material processing can create gas porosity and cracks?
