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The mechanics of interface fracture in layered composite materials: (5) thin film spallation driven by pockets of energy concentration – microscopic interface fracture

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conference contribution
posted on 23.06.2017, 14:13 by Bin Wang, Christopher HarveyChristopher Harvey, Simon WangSimon Wang
A hypothesis is made that delamination can be driven by pockets of energy concentration (PECs) in the form of pockets of tensile stress and shear stress on and around the interface between a thin film and a thick substrate, where PECs can be caused by thermal, electrochemical or other processes. Based on this hypothesis, three analytical mechanical models are developed to predict several aspects of thinfilm spallation failure including nucleation, stable and unstable growth, size of spallation and final kinking off. The predictions from the developed models are compared against experimental results and excellent agreement is observed.

History

School

  • Aeronautical, Automotive, Chemical and Materials Engineering

Department

  • Aeronautical and Automotive Engineering

Published in

21st International Conference on Composite Materials

Citation

WANG, B., HARVEY, C.M. and WANG, S., 2017. The mechanics of interface fracture in layered composite materials: (5) thin film spallation driven by pockets of energy concentration – microscopic interface fracture. 21st International Conference on Composite Materials (ICCM-21), Xi'an, China, 20th-25th August 2017.

Publisher

Chinese Society for Composite Materials

Version

AM (Accepted Manuscript)

Publisher statement

This work is made available according to the conditions of the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0) licence. Full details of this licence are available at: https://creativecommons.org/licenses/by-nc-nd/4.0/

Acceptance date

20/04/2017

Publication date

2017

Notes

This is a conference paper.

Publisher version

Language

en

Location

Xi'an, China