Crashworthiness characteristics of a carbon fiber reinforced dual-phase epoxy–polyurea hybrid matrix composite

Zhou, Hongyu; Attard, Thomas L.; Dhiradhamvit, Kittinan; Wang, Yanli; Erdman, Donald

doi:10.1016/j.compositesb.2014.10.053

Title: Crashworthiness characteristics of a carbon fiber reinforced dual-phase epoxy–polyurea hybrid matrix composite

Journal Article · Fri Nov 07 00:00:00 EST 2014 · Composites Part B: Engineering

DOI:https://doi.org/10.1016/j.compositesb.2014.10.053· OSTI ID:1286731

Zhou, Hongyu ^[1]; Attard, Thomas L. ^[2]; Dhiradhamvit, Kittinan ^[2]; Wang, Yanli ^[3]; Erdman, Donald ^[3]

Univ. of Alabama, Huntsville, AL (United States). Civil and Environmental Engineering
Univ. of Alabama, Birmingham, AL (United States). Civil, Construction, and Environmental Engineering
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Mechanical Properties and Mechanics Group

In this paper, the crashworthiness characteristics of rectangular tubes made from a Carbon-fiber reinforced Hybrid-Polymeric Matrix (CHMC) composite were investigated using quasi-static and impact crush tests. The hybrid matrix formulation of the CHMC was created by combining an epoxy-based thermosetting polymer with a lightly crosslinked polyurea elastomer at various cure-time intervals and volumetric ratios. The load–displacement responses of both CHMC and carbon-fiber reinforced epoxy (CF/epoxy) specimens were obtained under various crushing speeds; and crashworthiness parameters, such as the average crushing force and specific energy absorption (SEA), were calculated using subsequent load–displacement relationships. The CHMC maintained a high level of structural integrity and post-crush performance, relative to traditional CF/epoxy. The influence of the curing time and volumetric ratios of the polyurea/epoxy dual-hybridized matrix system on the crashworthiness parameters was also investigated. The results reveal that the load carrying capacity and total energy absorption tend to increase with greater polyurea thickness and lower elapsed reaction curing time of the epoxy although this is typically a function of the loading rate. In conclusion, the mechanism by which the CHMC provides increased damage tolerance was also investigated using scanning electron microscopy (SEM).

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Research Organization:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). High Temperature Materials Lab. (HTML)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V); USDOE

Grant/Contract Number:: AC05-00OR22725

OSTI ID:: 1286731

Alternate ID(s):: OSTI ID: 1251288

Journal Information:: Composites Part B: Engineering, Vol. 71; ISSN 1359-8368

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 21 works

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