Multi-scale measurement for tensile behaviors of glass fiber composites at high rate loading: Fiber fragmentation behaviors in epoxy resin
Jae Hyun Kim, Steven P. Mates, Nathanael A. Heckert, Walter G. McDonough, Gale A. Holmes
High strength and light weight composite materials used in various structural components of aviation and automotive applications deform under high rate loading conditions during collision. Since composite structures using continuous fibers are constituted in different scale structures (e.g. from single fibers to laminates), the fracture process must be characterized in multiple scales to connect fracture mechanism among the properties of the constituents with those of the composite structure. However, mechanical properties of composites (such as strength, failure strain and toughness) are typically measured under quasi-static loading conditions to characterize failure mechanism of composites. In this study, we investigate loading rate effects on the glass fiber break process in an epoxy matrix considering a multi-scale measurement approach (i.e. from single fiber to laminates). First, we fabricate model composites using a single fiber array, which is the fundamental structure of composites, and then load the specimen in tension to monitor the fiber break process at quasi-static loading and high rate loading respectively. Statistical and micro mechanical characterization methods are used to analyze the fiber break process and fiber-fiber interactions in epoxy matrix as a function of loading rates.
, Mates, S.
, Heckert, N.
, McDonough, W.
and Holmes, G.
Multi-scale measurement for tensile behaviors of glass fiber composites at high rate loading: Fiber fragmentation behaviors in epoxy resin, SAMPE Baltimore 2015, Baltimore, MD
(Accessed December 5, 2023)