Failure Analysis Methods, Tools and Services
Failure analysis is the process of collecting and analyzing data to determine the cause of a failure and how to prevent it from recurring. It is an important discipline in many branches of manufacturing industry, such as the electronics industry, where it is a vital tool used in the development of new products and for the improvement of existing products. It is especially important in manufacturing and field use of safety-critical and mission-critical equipment.
Failure analysis may be conducted on the design stage and on field use stage of the product life cycle.
Collected statistics and obtained field failure rates could be used in all failure analysis methods mentioned below.
FMECA includes failure analysis, criticality analysis and testability analysis. It analyzes different failure modes and their effects on the system, classifies and prioritizes end effects level of importance based on failure rate and severity of the effect of failure.
Potential Failure Mode and Effects Analysis (FMEA) complies with AIAG, QS-9000, SAE J 1739, IEC 60812, JEP131 and other standards, sometimes called “automotive” or “AIAG” (Automotive Industry Action Group) FMEA. It is required by many other standards like ISO 14971 (Medical devices risk management) and more.
Fault Trees investigate consequences of multiple simltaneous failures or events, and here its main advantage over FMEA/FMECA, which investigate single-pint failures.
An event tree itself is a visual representation of single failure sequences, it’s influence on other events and on the whole system.