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research-article

FOREIGN OBJECT DAMAGE BEHAVIOR OF A SiC FIBROUS CERAMIC COMPOSITE

[+] Author and Article Information
Nesredin Kedir

Naval Air Systems Command, Patuxent River, MD 20670
nesredinfkedir@gmail.com

Calvin Faucett

Naval Air Systems Command, Patuxent River, MD 20670
david.faucett@navy.mil

Luis Sanchez

Naval Air Systems Command, Patuxent River, MD 20670
luis.j.sanchez@navy.mil

Sung R Choi

Naval Air Systems Command, Patuxent River, MD 20670
sung.choi1@navy.mil

1Corresponding author.

ASME doi:10.1115/1.4041657 History: Received August 30, 2018; Revised September 16, 2018

Abstract

The response of a SiC fibrous ceramic composite to foreign object damage was determined at ambient temperature and velocities ranging from 40 to 150 m/s. Target specimens were impacted, at a normal incidence angle and in a partially supported configuration, using 1.59 mm-diameter hardened steel ball projectiles. Qualitative analysis of the damage morphologies of targets and projectiles were made via scanning electron microscopy (SEM). In addition, the extent of impact damage was characterized by determining the post-impact strength of each target specimen as a function of impact velocity. Relative to the as-received strength, the fibrous composite showed limited strength degradation due to impact with the maximum reduction of 17 % occurring at 150 m/s. A quasi-static analysis of the impact force prediction was also made based on the principle of energy conservation and the results were verified via experimental data.

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