Thermo-mechanical behaviour of balanced plain weave laminates

The classification of coupled and uncoupled laminates manufactured from balanced plain weave material is presented. Parent laminates are derived from combinations of standard ply angle orientations, i.e. 0, 90 and ±45º, from which 7 unique forms of coupled laminate are identified through judicious off-axis orientation. A single layer of balanced plain weave material is shown to be immune to thermal distortion upon cooling, following a standard high temperature manufacturing process, which implies that all classes of coupled laminate presented possess what is commonly referred to as the hygro-thermally curvature-stable condition, irrespective of ply orientation and stacking sequence