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Ramy El-kady
Assistant Professor, Mechanical Engineering Dep, Al-Azhar University
Cairo, Egypt
Public Documents
1
Cracking simulation-based cumulative fatigue damage assessment
mah farag
and 2 more
March 12, 2021
This work is an extension of applying a previously developed fracture mechanics cracking damage model to predict the fatigue lifetime of un-notched round specimens made of a ferrite-pearlite 0.4C-70/30 carbon steel in some cases of variable amplitude loading VAL. The model simulates the collective behavior of growing short fatigue cracks originating from the specimen surface roughness. Material grains of different phases, sizes and strengths are randomly distributed over the minimum circumference. Possible activities of surface cracks are predicted against loading cycles. Relevant published experimental data were utilized for comparison. The present predictions are in agreement with the corresponding experimental results.