Measurement of Transverse Deflection for Composite Laminates Using Holographic Interferometry

Holographic interferometry is an accurate and important technolngy. Through the application of recording and reconstructing light waves, one can solve a wide variety of mechanical or engineering problems caused by internal stresses, mechanical, electrical or thermal effects. The mechanical properties of composite materials, such as, deflection, strain and stress will be determined by the fiber types, the cross-section of specimens ans the fiber orientation of composite laminate. The purpose of this investigation will discuss the holographic technique and its application of measurement of transverse deflection for various composite laminates. The analysis for both theoretical and experimental results will be presented, and the effect of fiber orientation for composite laminate will be studied in this paper.