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ELLIPTICAL‐ARC SURFACE CRACKS IN ROUND BARS
Author(s) -
Carpinteri Andrea
Publication year - 1992
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1992.tb00039.x
Subject(s) - stress intensity factor , materials science , arc (geometry) , crack tip opening displacement , crack closure , bending , aspect ratio (aeronautics) , composite material , crack growth resistance curve , structural engineering , tension (geology) , geometry , enhanced data rates for gsm evolution , bar (unit) , fracture mechanics , mathematics , compression (physics) , geology , engineering , telecommunications , oceanography
The crack aspect ratio influence on the stress‐intensity factor of elliptical‐arc edge flaws in solid round bars under tension or bending loading is discussed. The relative crack depth ξ=a/D between the depth a of the crack's deepest point and the bar diameter D ranges from 0.1 to 0.6, while the aspect ratio a/b of the flaw is made to vary from 0.0 (straight crack front) to 1.0 (circular‐arc crack front). For each value of ξ being considered, the maximum stress‐intensity factor is attained in correspondence to the deepest point on the crack front in the case of a/b = 0.0, while it is attained near the external surface in the case of a/b = 1.0. For intermediate aspect ratios, the stress‐intensity factor presents the maximum value at the crack's deepest point for ξ≤ξ CR and near the free surface for ξ≥ξ CR , with the critical relative crack depth ξ CR getting lower and lower as the parameter a/b is increased.