Method of establishing standardized composite material properties

Abstract From the Canadian patent

A standard reference deformation of a composite material containing a flowable phase and compressible inclusions, such as a prepreg is, measured as the deformation whereat -the dominant compressive mode of composite deformation changes from that characteristic of compressible inclusion collapse to that characteristic of resin flow termed the optimal consolidation deformation. Establishment of this point permits measurement and correlation of physically significant composite properties. For example, material properties of such composite materials are measured under a compressive loading by an ultrasonic transducer at the optimal consolidation deformation. At this point, normally determined …