Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5206709 | Polymer Testing | 2013 | 7 Pages |
Abstract
Two methods were selected for mechanical testing; a lap-joint shear test to evaluate the weld strength [kJ/m2] and a double cantilever beam (DCB) method to evaluate the critical strain release energy (GIc) [J/m2]. The shear test suggested constant weld strength of 21Â kJ/m2 independent of laser heat input, while the DCB method resulted in varying GIc with an optimum at a laser power of 50Â W and a laser speed of 153.8Â mm/s. This difference was ascribed two different fracture mechanisms; chain rupture and chain pull-out.
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Authors
Thomas Brokholm Juhl, Jesper de Claville Christiansen, Erik Appel Jensen,