Method for validating vibratory and static fatigue behavior of piece of fine sheet, involves predicting risk of rupture of part formed by piece in use from time of occurrence of predetermined crack

摘要

The method involves positioning a piece on a support inclined with respect to a direction of application of a vibratory force combining static and vibratory damage (100), where the vibratory force within a frequency range is higher than a reference frequency. The vibratory force is applied (110) to the piece. Modes of the piece are measured (120). The exact time of occurrence of a crack in the modes of the piece is determined (130). The risk of rupture of a part formed by the piece in use is predicted (140) from the time of occurrence of a predetermined crack. An independent claim is also included for a device for validating vibratory and static fatigue behavior of a piece of a fine sheet.