Experimental and 3D FE evaluation of crack initiation energy J 1C in Al6061-TiC composites
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Date
2018
Journal Title
Journal ISSN
Volume Title
Publisher
IOS Press Nieuwe Hemweg 6B Amsterdam 1013 BG
Abstract
The test data crack initiation energy in Mode-I fracture, J 1C is determined experimentally for various compositions of Al6061-TiC composites by using compact tension (CT) specimen with variable aW ratios. Also, 3D nonlinear (elastic-plastic) finite element analysis was carried for Compact Tension (CT) specimen to evaluate J 1C, ahead at the crack-front of several Al6061-TiC composite specimens with various crack lengths. The 3D FEA J 1C results were compared with the experimental results. The J 1C values decrease with increasing crack length of the specimen because of decrease in load carrying capacity of the specimens. Al6061-TiC composites exhibit higher fracture toughness values than their counterparts Al-SiC composites. © 2018 IOS Press and the authors. All rights reserved.
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Keywords
Aluminum compounds, Crack initiation, Elastoplasticity, Fracture toughness, Silicon carbide, Silicon compounds, Titanium carbide, Al composites, Al-SiC composites, Compact tension specimen, Composite specimens, Crack initiation energy, Fracture toughness values, J integral, Mode I fracture, Cracks
Citation
Strength, Fracture and Complexity, 2018, 11, 1, pp. 63-72