... aluminium alloy structures; it contains nine main sections covering repair of thin skin components, repair of thick sections, gr/ep versus b/ep patches, effect of bondline defects, effect of impact ... lOmm] pieces of Teflon film were placed on the pretreated aluminium alloy surface prior to adhesive bonding, in order to produce bondline defects at the locations shown in Figure 15.9. These ... thermal considerations to be accounted for in the selection of patch materials. Crack patching of aircraft usually involves local heating of the repair area. During the curing process, the unheated...