TY - GEN
T1 - Effects of overloads and underloads on biaxial fatigue crack propagation in Al 7075-T651 alloy
AU - Datta, Siddhant
AU - Chattopadhyay, Aditi
AU - Iyyer, Nagaraja
AU - Phan, Nam
N1 - Funding Information:
The research is sponsored by US Navy Naval Air Systems Command and TDA Inc (USA). Subcontract No. N08-006 Phase III DO 0005, Program manager Dr. Nagaraja Iyyer
Publisher Copyright:
© 2017 ICF 2017 - 14th International Conference on Fracture. All rights reserved.
Copyright:
Copyright 2019 Elsevier B.V., All rights reserved.
PY - 2017
Y1 - 2017
N2 - The fatigue crack growth behavior of Al 7075-T651 was investigated under in-plane biaxial loading conditions with overload and underload cycles introduced at different crack lengths. Quantitative fractography was performed on the fatigued specimens to correlate the microscale fracture features with the damage modes associated with the applied load spectrum. Overloads resulted in significant crack retardation and, in the case of higher overload amplitudes at longer crack lengths, even caused total crack arrest. The underloads led to increased crack growth; however this increase was not significant.
AB - The fatigue crack growth behavior of Al 7075-T651 was investigated under in-plane biaxial loading conditions with overload and underload cycles introduced at different crack lengths. Quantitative fractography was performed on the fatigued specimens to correlate the microscale fracture features with the damage modes associated with the applied load spectrum. Overloads resulted in significant crack retardation and, in the case of higher overload amplitudes at longer crack lengths, even caused total crack arrest. The underloads led to increased crack growth; however this increase was not significant.
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M3 - Conference contribution
AN - SCOPUS:85065957906
T3 - ICF 2017 - 14th International Conference on Fracture
SP - 718
EP - 719
BT - ICF 2017 - 14th International Conference on Fracture
A2 - Gdoutos, Emmanuel E.
PB - International Conference on Fracture
T2 - 14th International Conference on Fracture, ICF 2017
Y2 - 18 June 2017 through 20 June 2017
ER -