General procedure of FA: Reporting failure analysis and failure analysis of welded joint — Lesson 2

This lesson covers the general procedure of failure analysis, focusing on the method of reporting and the analysis of welded joints. It discusses the importance of a clear, concise, and logical report, detailing the results obtained and the potential causes of failure. The lesson also delves into the failure analysis of metallic components, including the description of the failed component, service conditions at the time of failure, manufacturing process conditions, and mechanical properties of the material. It further explores the metallurgical evaluation of the failed component, chemical analysis, and recommendations to avoid similar failures in the future.

Video Highlights

01:41 - Overview of the elements a report should include, such as design aspects, service conditions, and testing results.
05:55 - Explanation of the importance of recommendations in a failure analysis report.
15:38 - Explanation of the steps involved in the failure analysis of weld joints.
20:41 - Discussion on the importance of integrating all the information to identify the primary and potential causes of failure.
28:59 - Discussion on the importance of collecting information about the welding process and procedures.

Key Takeaways

- Failure analysis is a time-consuming and exhaustive activity that involves extensive testing and material characterization.
- A failure analysis report should be clear, concise, logical, and include details about the failed component, service conditions, manufacturing process, mechanical properties, and metallurgical evaluation.
- The failure analysis of welded joints involves understanding the service conditions, manufacturing and processing methodology, mechanical properties, and metallurgical evaluation.
- Recommendations based on potential causes of failure are crucial to avoid similar failures in the future.
- The failure analysis of weld joints requires a detailed examination procedure, including macroscopy, microscopy, chemical analysis, and mechanical properties studies.