The influence of micropores on the dynamic–mechanical properties on reinforced epoxy foams

• Published in: Journal of materials science Vol. 33; no. 12; pp. 3207 - 3211
• Main Authors: Bledzki, A. K, Kurek, K, Gassan, J
• Format: Journal Article
• Language: English
• Published: Heidelberg Springer 15.06.1998; Springer Nature B.V
• Subjects: Applied sciences; Carbon fiber reinforced plastics; Carbon fibers; Damping; Exact sciences and technology; Fatigue limit; Fatigue tests; Fiber reinforced polymers; Forms of application and semi-finished materials; Glass fiber reinforced plastics; Glass fibers; Impact tests; Laminates; Materials science; Mechanical properties; Plastic foam; Polymer industry, paints, wood; Technology of polymers; Textile composites; Laminate; Fiber reinforced material; Mechanical properties; Epoxy resin; Tensile property; Experimental study; Property processing relationship; Composite material; Microporosity; Foaming process; Impact strength; Foam(plastics); Mechanical loss; Glass fiber; Carbon fiber
• ISSN: 0022-2461; 1573-4803
• DOI: 10.1023/A:1004320628434

The subject of this investigation is the influence of the content of micropores on the mechanical properties of fibre-reinforced epoxy foams. The reinforcement was made of glass or carbon fabrics. A foam-like composite was achieved, which contained 42.0 vol% glass fibres, 27.4 vol% micropores at a density of 1.4 g cm-3. When the foam was reinforced with 50 vol% carbon fibres the composite contained 15 vol% micropores.The load increasing test for these reinforced foams showed an interdependence between the damping and the content of micropores; the breaking stress decreased with increasing micropore content.The Wohler fatigue test showed similar curves, the fatigue limit decreased with increasing micropore content.The most distinct influence of micropores on the composite was observed at the impact test. The loss energy increased with increasing content of micropores. © 1998 Kluwer Academic Publishers