On the source of the thermoelastic response from orthotropic fibre reinforced composite laminates

In thermoelastic stress analysis (TSA) of orthotropic laminated polymer composites, heat transfer influences the measured induced temperature change, or ‘thermoelastic response’. The composite constituents, including different fibre types, geometry, ply thickness and resin systems, in combination with manufacturing process means that, even for nominally identical materials, conditions are generated transfer. Hence, definitively identifying ‘source’ response a general laminate has remained elusive. A procedure based on simultaneous application digital image correlation (DIC) TSA is devised that enables source to be established categorically. glass laminates, it shown conduction cannot take place so emanates from surface rich layer. similar carbon adiabatic only met at higher frequencies emanating ply.