How do you approach failure analysis and what methods do you use to determine the root cause of material failures?

Your Answer

How To Answer This Question?

When answering this question, it's important to demonstrate a systematic approach to failure analysis and a deep understanding of the methods used to determine root causes. Start by explaining the general steps you take in a failure analysis process, such as collecting data, conducting visual inspections, and performing various tests (e.g., mechanical testing, chemical analysis, microscopy). Highlight any specific tools or techniques you are proficient in, such as Scanning Electron Microscopy (SEM) or X-ray Diffraction (XRD). Provide examples from your past experience where you successfully identified the root cause of a material failure and discuss the impact of your findings. Emphasize your analytical skills, attention to detail, and ability to communicate your findings effectively to stakeholders. Example: "In my previous role, I approached failure analysis by first gathering all relevant data and conducting a thorough visual inspection. I then used SEM to examine the fracture surfaces and performed energy-dispersive X-ray spectroscopy (EDX) to analyze the elemental composition. By correlating the data from these tests, I was able to determine that the failure was due to stress corrosion cracking. My findings helped the team implement changes in the material selection process, ultimately improving the product's durability."