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An experimental study of fracture of LIGA Ni micro-electro-mechanical systems thin films

Y. Yang, S. Allameh, B. Boyce, K. S. Chan, W. O. Soboyejo

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

This article presents the results of an experimental study of fracture in LIGA Ni micro-electro-mechanical systems (MEMS) thin films. Microtesting techniques are developed for the study of the J-resistance curve (J-Δa) behavior in compact tension (CT) thin film specimens. In-situ measurements of crack-tip strain are presented together with in-situ and ex-situ microscopic images of crack-tip deformation and fracture mechanisms. Fractographic observation showed a mixture of inclined fracture planes (slant fracture) that are relatively featureless and normal fracture planes that exhibit dimples and microholes resulting from plastic deformation. © The Minerals, Metals & Materials Society and ASM International 2007.
Original languageEnglish
Pages (from-to)1223-1230
JournalMetallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume38
Issue number6
DOIs
Publication statusPublished - Jun 2007
Externally publishedYes

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