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Title: Impact damage and burst of filament-wound CFRP composite pressure vessel

Abstract

Quasi-static and impact tests were conducted on filament-wound carbon fiber composite pressure vessels to study factors that affect burst pressure. Observed damage include fiber microbuckling, matrix cracking, and delamination. For vessels that were not pressurized during test, both the matrix cracking and fiber breakage were restricted to the outer layer, whereas in the case of an internally pressurized vessel struck by a wedge nose shaped impactor these cracks extended into the second layer. Fiber microbuckling of the outer surface layer near the impact point was the main factor that degraded the burst pressure of the vessels. This type of damage was visually detectable on the surface. For an unpressurized vessel it appeared as a pair of cracks radiating from the periphery of contact region. On the other hand, for a pressurized vessel circumferential microbuckling developed within the contact region. The burst pressure for a damaged vessel decreased as the ratio of axial length of the buckled fibers l, to vessel thickness h, increased, up to a ratio {ell}/h {approx} 3, beyond which the burst pressure became constant. Strain measurements near the region of loading showed that fiber microbuckling occurred, the failure strain value at a strain rate of 104 s{supmore » {minus}1} was about six times the microbuckling strain for quasi-static loading.« less

Authors:
;  [1]
  1. Univ. of Cambridge (United Kingdom). Engineering Dept.
Publication Date:
OSTI Identifier:
428120
Report Number(s):
CONF-960706-
ISBN 0-7918-1772-5; TRN: IM9708%%449
Resource Type:
Book
Resource Relation:
Conference: American Society of Mechanical Engineers (ASME) pressure vessels and piping conference, Montreal (Canada), 21-26 Jul 1996; Other Information: PBD: 1996; Related Information: Is Part Of Structures under extreme loading conditions -- 1996. PVP-Volume 325; Shin, Y.S. [ed.] [Naval Postgraduate School, Monterey, CA (United States)]; Zukas, J.A. [ed.] [Computational Mechanics Consultants, Inc., Baltimore, MD (United States)]; PB: 272 p.
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; 36 MATERIALS SCIENCE; PRESSURE VESSELS; COMPOSITE MATERIALS; FAILURES; CRACK PROPAGATION; IMPACT SHOCK; EXPERIMENTAL DATA

Citation Formats

Matemilola, S A, and Stronge, W J. Impact damage and burst of filament-wound CFRP composite pressure vessel. United States: N. p., 1996. Web.
Matemilola, S A, & Stronge, W J. Impact damage and burst of filament-wound CFRP composite pressure vessel. United States.
Matemilola, S A, and Stronge, W J. 1996. "Impact damage and burst of filament-wound CFRP composite pressure vessel". United States.
@article{osti_428120,
title = {Impact damage and burst of filament-wound CFRP composite pressure vessel},
author = {Matemilola, S A and Stronge, W J},
abstractNote = {Quasi-static and impact tests were conducted on filament-wound carbon fiber composite pressure vessels to study factors that affect burst pressure. Observed damage include fiber microbuckling, matrix cracking, and delamination. For vessels that were not pressurized during test, both the matrix cracking and fiber breakage were restricted to the outer layer, whereas in the case of an internally pressurized vessel struck by a wedge nose shaped impactor these cracks extended into the second layer. Fiber microbuckling of the outer surface layer near the impact point was the main factor that degraded the burst pressure of the vessels. This type of damage was visually detectable on the surface. For an unpressurized vessel it appeared as a pair of cracks radiating from the periphery of contact region. On the other hand, for a pressurized vessel circumferential microbuckling developed within the contact region. The burst pressure for a damaged vessel decreased as the ratio of axial length of the buckled fibers l, to vessel thickness h, increased, up to a ratio {ell}/h {approx} 3, beyond which the burst pressure became constant. Strain measurements near the region of loading showed that fiber microbuckling occurred, the failure strain value at a strain rate of 104 s{sup {minus}1} was about six times the microbuckling strain for quasi-static loading.},
doi = {},
url = {https://www.osti.gov/biblio/428120}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Dec 31 00:00:00 EST 1996},
month = {Tue Dec 31 00:00:00 EST 1996}
}

Book:
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