Dynamic characteristics of composite with Hygrothermal effect

The need to develop and use light weight structural components in the design of aircraft and automotive vehicle has brought increasing application of composite materials. Composites have various kinds of flaws built into them during manufacturing process. Similar looking composites may have quite different properties depending upon their internal features. Reliable performance of the advanced, high strength material in critical applications depends on assuring that each part place in a service satisfies the conditions assumed in design. This research addresses the use of half power bandwidth method to experimentally measure the damping of a carbon fibre/epoxy composite. Additionally the dynamic stiffness was also measured. The effect of moisture, humidity and fibre orientation on dynamic characteristics of composite was investigated to work out the best layup sequence for a structure.

Autorentext

Mr. Behzad Ahmed Zai is currently working in a national R&D organization since April 2005. He was graduated from NEDUET, Pakistan in 2005. From 2006-2008 he was in Myongji University South Korea on HEC scholarship for MS studies in mechanical engineering. He is an author of eight research papers. His area of research is structural vibration.