Student: Alek Pensky
Committee: Dr. Masoud Yekani Fard
Abstract:
Two- and three-phase carbon fiber reinforced polymer composites are studied on multiple length scales to understand the effect of carbon nanotube particles on interphase properties and fracture performance. 3-phase samples containing CNT particles are subjected to mode-I fracture. GIC is improved by 23% over the base laminate. The enhancement in fracture properties is attributed to improved fiber-matrix adhesion and crack deflection. Peak Force Quantitative Nanomechanical Mapping (PFQNM) is utilized to capture quantitative nano-scale interphase properties. Weibull analysis is used to fit the distribution of thickness and modulus values. The thickness of CNT network-polymer and CF-polymer interphases are 15-33 nm and 10-13 nm, respectively. The large interphase surrounding CNT networks improves stress transfer and fracture properties. Quantification of the stochastic interphase properties in this work will inform the design of nanocomposites for thermal, mechanical, and electrical applications.
Zoom Room: https://asu.zoom.us/j/81993456852
Presentation Time: 12:00-1:00 PM (Arizona Time)
