Date of Award
Master of Science (MS)
Mechanical & Aerospace Engineering
Mechanical and Aerospace Engineering
Prepreg-based Platelet Molded Compounds (PPMCs) are quickly becoming a widely used method for creating structural components in the aerospace and automotive industries. The discontinuous nature of the platelets used allow good formability of both complex and basic structural components; from seats on commercial airplanes to outer panels of vehicles.
This thesis will look at an important research question of these composites: how PPMCs behave under dynamic loading, e.g. impact and post-impact behavior. Impact is analyzed using recorded force and velocity data to find the absorbed energy. Digital image correlation is used with compression after impact testing to study the propagation of damage in the material with the initial damage present due to impact loading. Residual strengths from compression after impact tests yield a way to evaluate the associated strength knockdown due to the extent of damage within a material. The role of the platelet geometry, by varying platelet length, was evaluated. This work provides a greater insight into the behavior of the prepreg platelet molding compound under impact and post-impact behavior, which is important for understanding structure-property relationships in these composites when subjected to various loading conditions.
Volle, Christopher E..
"A Post-Impact Behavior of Platelet-Based Composites Produced by Compression Molding"
(2020). Master of Science (MS), Thesis, Mechanical & Aerospace Engineering, Old Dominion University, DOI: 10.25777/c5hx-7b57