File:STRESS-STRAIN RELATIONSHIPS IN ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE FIBERS UNDER BALLISTIC LOADING (IA stressstrainrela1094559614).pdf
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STRESS-STRAIN RELATIONSHIPS IN ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE FIBERS UNDER BALLISTIC LOADING
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| Author |
Walker, Matthew |
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| Title |
STRESS-STRAIN RELATIONSHIPS IN ULTRA-HIGH MOLECULAR WEIGHT POLYETHYLENE FIBERS UNDER BALLISTIC LOADING |
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| Publisher |
Monterey, CA; Naval Postgraduate School |
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| Description |
Ultra-high molecular weight polyethylene (UHMWPE) fibers are commonly used in body armor systems, alone or in combination with ceramic inserts, as ballistic protection against high-velocity projectiles. Under dynamic loading conditions, the fibers are extremely strong in tension, but the extreme pressures created at impact by ogive-shaped projectiles can cause premature failure before additional fibers can be recruited to distribute the force. A light gas gun was used to launch 9.525 mm steel spherical projectiles into a sample of 20 layered UHMWPE uniaxial fiber sheets (at 90-degree offset between layers) to examine the stress/strain behavior of the fabric over time. Load cells (4.4 kN) were used to measure uniaxial forces along the fibers. Two high-speed video cameras were used to measure both the in-plane and out-of-plane fiber deflection. Using numerical calculations of the total strain, stress was derived from published stress-strain curves and compared to the measured load cell force data, in both X and Y directions. Subjects: UHMWPE; ballistic; body armor |
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| Language | English | |
| Publication date | June 2018 | |
| Current location |
IA Collections: navalpostgraduateschoollibrary; fedlink |
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| Accession number |
stressstrainrela1094559614 |
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| Source | ||
| Permission (Reusing this file) |
Copyright is reserved by the copyright owner. | |
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This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
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| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
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| current | 23:03, 24 July 2020 |  | 1,275 × 1,650, 54 pages (2.15 MB) | Fæ (talk | contribs) | FEDLINK - United States Federal Collection stressstrainrela1094559614 (User talk:Fæ/IA books#Fork8) (batch 1993-2020 #28415) |
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