Interlaminar Fracture Energy of Laminates Made of Thermoplastic Impregnated Fiber Bundles

2018/03/29 by Wittich, Hans, Friedrich, Klaus
#Impregnated Fiber Bundles #Ingenieurwissenschaften #Interlaminar Fracture

paper · doi:10.15480/882.1612

Abstract

Interlaminar mode I- and II-fracture energy measurements (in terms of the strain energy release rate) were carried out with different laminates of a glass fiber/thermoplastic PA 12- and aramid fiber/PA 12-composite system. Specimens were prepared from fiber bundles interspersed with polymer powder and a polymer sheath around them. The results, obtained from two different test procedures and data reduction methods, reflect a good interlaminar fracture toughness of the different laminates. This can be attributed to the large damage zone size due to the tough matrix and a big amount of fiber bridging, which is highlighted by micrographs achieved with SEM-analysis.

Related

• Characterization of the interlaminar fracture toughness of unidirectional thermoplastic composites
• Comparing Mode I, Mode II and Mixed-Mode I/II interlaminar fracture toughness of glass and carbon fiber reinforced polymer laminates with the same epoxy matrix system
• Experimental and Numerical Investigation of Intra-Laminar Energy\n Dissipation and Size Effect in Two-Dimensional Textile Composites
• A Study on the Fracturing Behavior of Thermoset Polymer Nanocomposites
• Elastic and Fracture Behavior of Three-Dimensional Ply-to-Ply Angle Interlock Woven Composites: Through-Thickness, Size Effect, and Multiaxial Tests