Accession Number : ADA141197

Title :   Deformation and Fracture Maps for Polymer-Foams, Solid Polymers and Polymer-Composites.

Descriptive Note : Final rept.,


Personal Author(s) : Ashby,M F ; Beaumont,P W R

PDF Url : ADA141197

Report Date : Apr 1984

Pagination or Media Count : 90

Abstract : This report describes an initial study of the development of deformation and fracture maps for classifying polymeric-based materials. It is in three parts. Part 1 describes how the mechanical behaviour of polymer-foams can be classified in terms of the properties of the cell wall and cell geometry, where a diagram of applied stress and strain displays information of the mechanisms of deformation and buckling. Part 2 shows how solid polymers can be classified by their mechanical response and mechanisms of deformation based on diagrams of modulus versus temperature with contours of constant time. Finally, Part 3 shows how models of the mechanisms of fracture of advanced polymer-composites can be used to construct diagrams where any 2 of number of composite properties are plotted against one another and contours of constant toughness and certain failure parameters, together with the dominant fracture mechanisms, are displayed. (Author)

Descriptors :   *Polymers, *Foam, *Composite materials, *Fracture(Mechanics), *Deformation, Cell wall, Cell structure, Geometric forms, Buckling, Stress strain relations, Solid bodies, Contours, Temperature, Density

Subject Categories : Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE