The Effects of Bonded Retarder on Fatigue Crack Growth in 7085 Aluminium Alloy


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To improve damage tolerance performance, GLARE was used as bonded crack retarders in this paper. Fatigue tests were run with unbonded and bonded samples; then test results between them was compared. Thermal residual stresses had been studied. It was found that bonded crack retarders can improve damage tolerance performance and capability. Thermal residual stresses have a detrimental effect on the fatigue crack growth rates by means of increasing the effective R-ratio applied on the aluminium substrate. Finite element analysis was carried out and the result was in good agreement with the experimental data.



Advanced Materials Research (Volumes 217-218)

Edited by:

Zhou Mark






Y. E. Ma et al., "The Effects of Bonded Retarder on Fatigue Crack Growth in 7085 Aluminium Alloy", Advanced Materials Research, Vols. 217-218, pp. 1135-1140, 2011

Online since:

March 2011




[1] Niu. M. C. Y., Airframe structural design, Hong Kong C.P. ltd, 2nd Edition, (2002).

[2] Schijve, J., Crack stoppers and Arrall laminates, Eng. Fract. Mechanics, vol 37, No. 2 pp.405-421, (1990).

[3] Hardrath. H. F, et al. Fatigue crack propagation in aluminium alloy box wings, NACA, TN 3856, (1956).

[4] Broek D., Elementary engineering fracture mechanics, Third Edition, (1982).

[5] Baker, A.A., Rose, L.R. F, et al, Advances in composite patch repair of metallic aircraft structures, 1st Edition, Elsevier Science ltd, (2002).

[6] Poe, C. C., Stress-intensity factor for a cracked sheet with riveted and uniformly spaced stringers, NASA Tech. Report, TR-R-358, (1971).

[7] Heinimman, M., Bucci, R., et al., Improving damage tolerance of aircraft structures through the use of selective reinforcement, 23rd ICAF Symposium.

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