Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1994-11-23
1997-12-09
Osele, Mark A.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73150A, 156344, G01N 324
Patent
active
056963270
ABSTRACT:
An apparatus and method for separating a thin film from a substrate, the thin film having a surface with a selected width, includes an indenter for applying a force to the surface of the thin film that is substantially equal along the selected width. The forces are applied until separation of a portion of the thin film from the substrate occurs. In a preferred embodiment, the indenter is made from a block of material having a substantially flat surface engageable with the surface of the thin film. The substantially flat surface of the block of material has a width at least equal to the width of the surface of the thin film. Based on the two dimensional geometry of the mechanics, accurate analysis of work of adhesion is achieved.
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de Boer Maarten P.
Gerberich William W.
Huang He
Nelson John C.
Wang Feng
Koehler S.
Osele Mark A.
Regents of the University of Minnesota
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