Research Summaries

Back Composite Materials for Aircraft Structural Applications

Fiscal Year 2020
Division Graduate School of Engineering & Applied Science
Department Mechanical & Aerospace Engineering
Investigator(s) Kwon, Young W.
Sponsor Office of Naval Research (Navy)
Summary The proposed project is to develop a robust and physics-based fatigue failure model for fibrous composite structures using the multiscale approach. The newly proposed model will be based on the respective fatigue failure of constituent materials as repeated loads are applied with a load transfer from failed constituents to not-failed constituents until the complete fracture. The advantage of the model can consider residual stresses/strains at the consistent material level, local non-uniform distribution of reinforcing fibers, misalignment of fibers, etc. in the fatigue failure prediction. In order to develop the failure fatigue model, cyclic testing of each individual constituent material and different kinds of composite materials will be conducted. Then, the multiscale approach will be used to develop the fatigue failure model, which links constituent level stresses/strains and the composite level stresses/strains. The secondary objective is to develop an energy harvesting system for the Unmanned Air Vehicles (AUV) such that their operations can be extended for longer durations and more critical missions. The energy harvesting system will be incorporated into sandwich composite structures such that the structures become multifunctional in terms of generating energy and providing structural integrity.
Keywords
Publications Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal
Data Publications, theses (not shown) and data repositories will be added to the portal record when information is available in FAIRS and brought back to the portal