Possibilities of Detecting Damage Due to Osmosis of GFRP Composites Used in Marine Applications

The marine composites market is driven by the increasing demand for lightweight, corrosion-resistant, and impact-resistant boats. Polymer matrix are currently most popular composite material in applications. Fiberglass practically main type of fiber that used extensively Due to aggressive sea environment, structural elements ships exposed damage due phenomenon osmosis. This also favored defects result from impacts technological errors during production these elements. Non-destructive testing methods necessary detect internal structure composite. paper presents a numerical analysis possibility using vibrothermography detection glass–fiber reinforced laminates Numerical simulations have shown favorable method detecting will be acoustic waves. an unusual application because, as rule, range ultrasonic waves vibrothermography. In our further works, it planned verify calculations through experimental research. applicability terahertz technique was assessed. During testing, all test sample were detected this technique. presented results indicate