TY - JOUR

T1 - Application of the cyclic J-integral to fatigue crack propagation of Al 2024-T351

AU - Banks-Sills, Leslie

AU - Volpert, Yehuda

PY - 1991

Y1 - 1991

N2 - In this investigation, an experimental/numerical study of the cyclic J-integral, ΔJ, is carried out in order to more clearly explain the meaning of this parameter for fatigue crack growth studies. Constant amplitude fatigue tests with two R-ratios (R ≅ 0.05 and R ≅ 0.5) are performed on compact tension specimens fabricated from Al 2024-T351. A simulation of tests is carried out numerically by means of the finite element method with the material modeled to be elasto-plastic. From the numerical results, values of ΔJ are calculated from both a path independent integral and load vs load-line displacement data. Comparisons between these values, as well as to those determined from experimental data, are seen to be reasonable. The parameter ΔJ, is seen to properly correlate the crack growth rate under elastic and small scale yielding conditions.

AB - In this investigation, an experimental/numerical study of the cyclic J-integral, ΔJ, is carried out in order to more clearly explain the meaning of this parameter for fatigue crack growth studies. Constant amplitude fatigue tests with two R-ratios (R ≅ 0.05 and R ≅ 0.5) are performed on compact tension specimens fabricated from Al 2024-T351. A simulation of tests is carried out numerically by means of the finite element method with the material modeled to be elasto-plastic. From the numerical results, values of ΔJ are calculated from both a path independent integral and load vs load-line displacement data. Comparisons between these values, as well as to those determined from experimental data, are seen to be reasonable. The parameter ΔJ, is seen to properly correlate the crack growth rate under elastic and small scale yielding conditions.

UR - http://www.scopus.com/inward/record.url?scp=0025824797&partnerID=8YFLogxK

U2 - 10.1016/0013-7944(91)90270-B

DO - 10.1016/0013-7944(91)90270-B

M3 - מאמר

AN - SCOPUS:0025824797

VL - 40

SP - 355

EP - 370

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

SN - 0013-7944

IS - 2

ER -