NDLI: Experimental and Numerical Study of Ductile Fracture Initiation in Aluminum 6061-T6

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Rekik, W. Ancelet, O. Gardin, C.
Copyright Year	2015
Abstract	This work deals with the characterization of ductile damage in Aluminum 6061-T6 alloy. In this paper we discuss the stress triaxiality effect on the initiation and the evolution of damage through a sequence of tensile tests conducted on round specimens with different rate of trixialities and tearing tests on precracked Compact Tension specimens. Scattering of ductility and toughness values was highlighted between the three characteristic directions studied in this topic. Based on the experimental results, numerical simulation has been performed in order to analyze and predict ductile fracture initiation of this aluminum alloy by simulating void growth according to the Rice-Tracey micromechanical model. The numerical simulation was conducted in two steps: first the critical void growth ratio (R / R0)c was evaluated for tensile cylindrical specimens with different degrees of triaxiality and then used to analyze crack growth initiation on Compact Tension specimen. Due to the Al-6061-T6 highly sensitivity to triaxiality, a necessary adaptation of the Rice-Tracey model’s coefficient was made.
Sponsorship	Pressure Vessels and Piping Division
File Format	PDF
ISBN	9780791856963
DOI	10.1115/PVP2015-45143
Volume Number	Volume 3: Design and Analysis
Conference Proceedings	ASME 2015 Pressure Vessels and Piping Conference
Language	English
Publisher Date	2015-07-19
Publisher Place	Boston, Massachusetts, USA
Access Restriction	Subscribed
Subject Keyword	Radiation scattering Computer simulation Scattering (physics) Aluminum Ductility Alloys Aluminum alloys Fracture (materials) Stress Fracture toughness Electromagnetic scattering Ductile fracture Tension Damage
Content Type	Text
Resource Type	Article

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