A study was made of the delamination behavior of sandwich beams made of titanium core bonded to face-plates that consisted of carbon fiber reinforced polymer composite. Nominally mode I behavior was considered at 23C and 180C, by making use of a specially reinforced double cantilever (DCB) specimens. The toughness of the bond between the faceplate and the core was determined on the basis of a beam on elastic foundation analysis. The specimen compliance, and toughness were all independent of temperature in these relatively short-term experiments. The fracture mechanism showed temperature dependence, due to the hygrothermal sensitivity of the adhesive.Liechti, Kenneth M. and Marton, BalazsLangley Research CenterCOMPOSITE STRUCTURES; DELAMINATING; METAL PLATES; SANDWICH STRUCTURES; TEMPERATURE EFFECTS; TITANIUM; FAILURE MODES; FIBER COMPOSITES; HYGRAL PROPERTIES...