Izvorni znanstveni članak
J-integral as possible criterion in material fracture toughness assessment
Goran Vukelić
; Tehnički fakultet,Sveučilišta u Rijeci, Rijeka, Hrvatska
Josip Brnić
; Tehnički fakultet,Sveučilišta u Rijeci, Rijeka, Hrvatska
Sažetak
Numerical fracture toughness assessment of two types of steel, AISI 420 and AISI 431, has been conducted in this paper. The J-integral is chosen as a criterion for fracture behaviour comparison of compact type (CT) specimens made of investigated materials. The values of J-integral are determined through a newly developed algorithm using finite element (FE) stress analysis results of numerically simulated single specimen test method, which is usually employed for experimental J-integral assessment. J-integral values are presented in dependence on specimen crack growth size (Δa) for three initial measures of specimen's crack size, a/W = 0.25, 0.5, 0.75.
Ključne riječi
J-integral, CT specimen, Fracture, Crack growth, FE analysis
Hrčak ID:
74926
URI
Posjeta: 5.283 *