NDLI: Thin film cracking modulated by underlayer creep

Content Provider	Springer Nature Link
Author	Liang, J. Huang, R. Prévost, J. H. Suo, Z.
Copyright Year	2003
Abstract	In devices that integrate dissimilar materials in small dimensions, crack extension in one material often accompanies inelastic deformation in another. In this paper we analyze a channel crack advancing in an elastic film, while an underlayer creeps. The film is subject to a tensile stress. As the underlayer creeps, the stress field in the film relaxes in the crack wake, and intensifies around the crack tip. In a blanket film, the crack can attain a steady velocity, set by two rate processes: subcritical decohesion at the crack tip, and creep in the underlayer. In a thin-film microbridge over a viscous stripe, the crack cannot grow when the bridge is short, and can grow at a steady velocity when the bridge is long. We use a two-dimensional shear lag model to approximate the three-dimensional fracture process, and an extended finite element method to simulate the moving crack with an invariant, relatively coarse mesh. On the basis of the theoretical findings, we propose new experiments to measure fracture toughness and creep laws in small structures. As a byproduct, an analytical formula is found for the growth rate per temperature cycle of a channel crack in a brittle film, induced by ratcheting plastic deformation in a metal underlayer.
Starting Page	269
Ending Page	279
Page Count	11
File Format	PDF
ISSN	00144851
Journal	Experimental Mechanics
Volume Number	43
Issue Number	3
e-ISSN	17412765
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2003-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Crack thin film creep ratcheting Theoretical and Applied Mechanics Structural Mechanics Engineering Fluid Dynamics Mechanical Engineering Engineering Design Characterization and Evaluation Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Mechanical Engineering Aerospace Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

A photoelastic study of crack repair

A parametric study of laser induced thin film spallation

Pure-shear Failure of Thin Films by Laser-induced Shear Waves

Fatigue crack initaition and propagation from hole defects

Intersonic crack propagation along interfaces: Experimental observations and analysis

Local crack tip strain behavior during fatigue crack initiation and propagation in polycarbonate

Experiments on crack identification in cantilever beams

Loading effect on ACPD of a crack in ferromagnetic material

Experimental and computational models for three-dimensional crack-fiber interactions

Thin film cracking modulated by underlayer creep

Similar Documents

A photoelastic study of crack repair

A parametric study of laser induced thin film spallation

Pure-shear Failure of Thin Films by Laser-induced Shear Waves

Fatigue crack initaition and propagation from hole defects

Intersonic crack propagation along interfaces: Experimental observations and analysis

Local crack tip strain behavior during fatigue crack initiation and propagation in polycarbonate

Experiments on crack identification in cantilever beams

Loading effect on ACPD of a crack in ferromagnetic material

Experimental and computational models for three-dimensional crack-fiber interactions

Thin film cracking modulated by underlayer creep