Research focus 3: Inspection technology
In partnership with Quickstep, we’re developing methods for inspecting composite materials for defects and damages.These techniques are primarily used to detect and quantify the defects in composites such as interlaminar voids and porosity, foreign material inclusions, fibre misorientation, resin-rich areas, delamination, thickness measurement (part/coating) and crack sizing.
Fibre-reinforced composites are increasingly used in several industries including aerospace, automobiles, civil, sports and marine because of high strength-to-weight and stiffness-to-weight ratios. As multicomponent and inhomogeneous(non-uniform) materials, composites possess inherent defects that influence their material properties.
Using non-destructive testing (NDT), it is possible to inspect composite materials to examine defects and damages.Ultrasonics are widely used, but these techniques mostly inspect composites with direct contact or in the water at distance. Laser ultrasonic and C-scan techniques can be used for the inspection of composite structures even with a complex shape — laser ultrasonic approaches can inspect the complex part even in the dynamic state at distance.