Biaxial strength determination of woven fabric composite for airship structural envelope based on novel specimens

Biaxial strength determination of woven fabric composite for airship structural envelope based on... Since the high altitude airship provides an economical platform for earth observation, telecommunication and space exploration, its structural envelope materials attracted wide research interests. Although the uniaxial strength was studied extensively, it cannot properly characterize the real strength of the envelope due to the normal biaxial tensile state in operation service. The biaxial strength determination, which is the key parameter related to the airship structural strength, remained unsolved due to the stress concentration and unsatisfactory failure location. This paper presents a new specimen design and test method for biaxial strength ascertaining. A high-speed camera was employed to capture the biaxial failure process of specimens. According to photographs, single slit or crossed slits failure may occur when materials reached their load bearing limits. The authentic biaxial failure stress was obtained utilizing numerical software. Other than the previous perspective, the biaxial strength equals the lower uniaxial strength multiplied by an amplification factor of 1.1–1.3 under a 1:1 stress ratio. The further work may focus on expanding the test range with various load ratios, which could complete a precise failure envelope in biaxial plane stress space. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Composite Structures Elsevier

Biaxial strength determination of woven fabric composite for airship structural envelope based on novel specimens

Loading next page...
 
/lp/elsevier/biaxial-strength-determination-of-woven-fabric-composite-for-airship-ZX4MylHfy0
Publisher
Elsevier
Copyright
Copyright © 2017 Elsevier Ltd
ISSN
0263-8223
eISSN
1879-1085
D.O.I.
10.1016/j.compstruct.2017.10.067
Publisher site
See Article on Publisher Site

Abstract

Since the high altitude airship provides an economical platform for earth observation, telecommunication and space exploration, its structural envelope materials attracted wide research interests. Although the uniaxial strength was studied extensively, it cannot properly characterize the real strength of the envelope due to the normal biaxial tensile state in operation service. The biaxial strength determination, which is the key parameter related to the airship structural strength, remained unsolved due to the stress concentration and unsatisfactory failure location. This paper presents a new specimen design and test method for biaxial strength ascertaining. A high-speed camera was employed to capture the biaxial failure process of specimens. According to photographs, single slit or crossed slits failure may occur when materials reached their load bearing limits. The authentic biaxial failure stress was obtained utilizing numerical software. Other than the previous perspective, the biaxial strength equals the lower uniaxial strength multiplied by an amplification factor of 1.1–1.3 under a 1:1 stress ratio. The further work may focus on expanding the test range with various load ratios, which could complete a precise failure envelope in biaxial plane stress space.

Journal

Composite StructuresElsevier

Published: Jan 15, 2018

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off