Effect of anisotropy on the ductile fracture in metal reinforcements of brittle matrix composites

Karanam, Madhu Kiran and Gulivindala, Gopi and Chinthapenta, Viswanath R. (2021) Effect of anisotropy on the ductile fracture in metal reinforcements of brittle matrix composites. Theoretical and Applied Fracture Mechanics, 112 (102923). ISSN 01678442

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Abstract

Mechanisms of ductile failure in brittle matrix composites with metal reinforcements are investigated using a mechanistic approach to incorporate material anisotropy. Rapid void expansion with increasing remote strain and at nearly constant remote strain (cavitation) is modeled. Fracture energy, total energy absorbed, and cavitation limit is obtained as a function of material anisotropy. It is observed that for initial void volume fraction less than or equal to 10-4 cavitation phenomenon is seen. The critical stress at cavitation is found to increase with decreasing void size until it reaches the cavitation limit. Further, it is observed that the ductile fracture of metal reinforcements in the brittle matrix composite is sensitive to the material anisotropy.

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IITH Creators:

IITH Creators	ORCiD
Karanam, Madhu Kiran	UNSPECIFIED
Gulivindala, Gopi	UNSPECIFIED
Chinthapenta, Viswanath	UNSPECIFIED

Item Type:

Article

Uncontrolled Keywords:

Brittle matrix composites; Cavitation limits; Cavitation phenomenon; Critical stress; Ductile failures; Material anisotropy; Total energy; Void volume fraction;Ductile fracture; Fracture energy; Material instability; Plastic anisotropy; Void expansion;Anisotropy; Cavitation; Ductile fracture; Metallic matrix composites; Void fraction

Subjects:

Others > Engineering Aerospace
Others > Aerospace Technology

Divisions:

Department of Mechanical & Aerospace Engineering

Depositing User:

. LibTrainee 2021

Date Deposited:

31 Jul 2021 04:51

Last Modified:

31 Jul 2021 04:51

URI:

http://raiithold.iith.ac.in/id/eprint/8585