ISO/NP 12909

Metallic Materials — Fatigue testing --Ultrasonic resonant method for very high cycle fatigue

Scope

This proposal specifies terms, definitions, symbols, principles, apparatus, specimen, test procedure,
data processing, result evaluation, report and other content for the very high cycle fatigue test under resonant axial loading at an ultrasonic frequency that an accelerated method permits affordable time consuming to obtain the fatigue result.

This proposal is applicable to the determination of fatigue properties or to the comparing of fatigue resistance of metallic materials at large number of cyclic loading within the range from 10^7 to 10^11 cycle, which are applied for the study of durability problems, such as analysis of wheel set safety based on numerical simulation in railway industry, design of key elements in power plant for long term service in energy industry, numerical predictive assessment of structure integrity in aviation industry, etc.