Cracked bi-Material Plates under Thermomechanical Loading

Gergana Nikolova; Jordanka Ivanova

doi:10.4028/www.scientific.net/KEM.409.406

Paper Titles

The Milling Time Effect on Sintering Kinetics of Silicon Nitride Based Composites
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Creep of FINEMET Alloy at Amorphous to Nanocrystalline Transition
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Fracture Toughness of Si₃N₄ Based Ceramics with Rare-Earth Oxide Sintering Additives
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Chemical Methods for Scanning Electron Microscope Characterization of Non-Oxide Ceramics and Composites
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Brittle Intergranular Failure in Grain Aggregates - A Computer Simulation by Means of the Graphics Processing Unit
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Wear of TiCN Coated Sintered Fe-1.5Cr-0.2Mo-0.7C Steels
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Quantitative Description of Overlaps on Sialon Ceramics Fractures by the Multifractal Method
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Porosity Measurement Method by X-Ray Computed Tomography
p.402

Cracked bi-Material Plates under Thermomechanical Loading
p.406

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Cracked bi-Material Plates under Thermomechanical Loading

Abstract:

A bimaterial structure composed of two elastic plates bonded together by an interface with a normal (transverse) crack in the first plate and subjected to monotonically temperature and tension loading is considered. The interface is assumed to exhibit brittle failure at critical shear stress value or progressive damage in a cohesive zone preceding delamination. Using modified Shear lag model, the analytical solution is provided specifying the length of debonding. The critical lengths of a partial debonding along the interface are calculated and the limit value of temperature at full debonding is obtained. The analytical predictions are compared with experimental data and numerical results of Lemaitre and Song. The comparison shows a good agreement and proves the validity of the model used.