This paper deals with the problem of the fracture of composite to metal adhesive joints subject to thermo-mechanical loading. The problem is analyzed using a fracture mechanics model, which predicts the critical temperature change at which fracture occurs for a given pair of materials as a function of their thickness ratio. The experimental program carried out to verify the analytical results is described. Thermal tests were conducted on single and double lap joints of metal adhesively bonded to composite. The fracture resistance of the adhesive joint was measured by mechanical testing. It was observed that the steady-state fracture mechanics analysis correctly predicted trends in the critical temperature drop to cause failure as a function of adherend properties. The mechanical tests revealed that scrim-reinforced film adhesives can exhibit resistance curve behavior. It was also noted that a single value of adhesive toughness is not sufficient to characterize fracture data.
Fracture of composite-metal adhesive joints under thermo-mechanical loading
Bruch von Verbundstoff-Metall-Klebverbindungen unter thermomechanischen Belastungen
1997
8 Seiten, 5 Bilder, 1 Tabelle, 13 Quellen
Aufsatz (Konferenz)
Englisch
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