Microscopic aspects of crack propagation along PET-glass and PET-Al interfaces

[摘要] This paper reports microscopic investigations of the propagation of cracks along polymer-glass and polymer-metal interfaces. The experimental methods include an asymmetric double cantilever beam in an optical microscope, and bire-fringence and atomic force microscopy of the crack faces. The crack fronts propagate inhomogeneously in space and time by way of forward bursts that spread laterally along the front over a certain distance. Experimental indications for correlation between crack propagation and interface roughness and for the occurrence of shear-bands in front of the propagating interface cracks are discussed. (c) 2006 Elsevier Ltd. All rights reserved.

[发布日期] 2006-11-01

[效力级别]  Proceedings Paper

[关键词] polymer metal interfaces;interface cracks;delamination;crack propagation;microscopy