Читать книгу Root Cause Failure Analysis - Trinath Sahoo - Страница 126

Occasionally, the investigator must simulate the environmental conditions encountered during service to ascertain suitability of the material to environmental conditions and to determine the effect of prior heat treatment or other processing on the service performance of the material. For example, improper heat treatment may render the material susceptible to certain types of attack. Simulation of the heat treatment as reported in the case history is valuable for both confirmation purposes and for further testing, particularly on a comparison basis (e.g., comparison of the toughness of the failed material as received and after various experimental heat treatments). Certain types of simulation tests require accelerated testing to obtain the desired information in a reasonable length of time. Interpretation of accelerated test data must be done with care.