Nondestructive estimation of remaining fatigue life without the loading history.

Autor: Jang, JY, Mehdizadeh, M, Khonsari, MM
Předmět:
Zdroj: International Journal of Damage Mechanics; Mar2020, Vol. 29 Issue 3, p482-502, 21p
Abstrakt: A new nondestructive method to estimate the remaining fatigue life of a fatigue specimen with unknown knowledge of the loading history is presented. It requires only one short-time excitation test. The method utilizes the concept of damage parameter and the temperature rise to reliably predict the remaining number of cycles before fracture. A generalized procedure and numerous experimentally verified examples are presented. It is shown that the method can be applied to both constant and variable stress levels. Extensive laboratory tests reveal that the results of the remaining fatigue life predictions are in very good agreement with measurements. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index