Mode II fatigue delamination of carbon/epoxy laminates using the end-notched flexure test

Mode II fatigue delamination of carbon/epoxy laminates using the end-notched flexure test The fatigue delamination behaviour of carbon/epoxy laminates was investigated through end-notched flexure tests carried out under displacement control. Fatigue tests were conducted at different stress ratios from pre-cracks generated in initial quasi-static tests, which provided fracture toughness values. Crack propagation rates were obtained by a new approach that employed the effective crack method and considered propagation increments of small strain-energy release rate variation. The present results were found to give a more realistic view of the fatigue delamination behaviour by taking either a recently defined strain-energy release rate range or the stress intensity factor range as the main fatigue driving parameter. The analysis took into account the typical power law fits, the influence of the stress ratio and the indication of a possible fatigue threshold. Finally, quasi-static tests conducted from the fatigue pre-crack showed significantly lower initiation critical strain-energy release rates than the ones previously measured. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Composite Structures Elsevier

Mode II fatigue delamination of carbon/epoxy laminates using the end-notched flexure test

Loading next page...
 
/lp/elsevier/mode-ii-fatigue-delamination-of-carbon-epoxy-laminates-using-the-end-0KZwn0I1GV
Publisher
Elsevier
Copyright
Copyright © 2015 Elsevier Ltd
ISSN
0263-8223
eISSN
1879-1085
D.O.I.
10.1016/j.compstruct.2015.08.002
Publisher site
See Article on Publisher Site

Abstract

The fatigue delamination behaviour of carbon/epoxy laminates was investigated through end-notched flexure tests carried out under displacement control. Fatigue tests were conducted at different stress ratios from pre-cracks generated in initial quasi-static tests, which provided fracture toughness values. Crack propagation rates were obtained by a new approach that employed the effective crack method and considered propagation increments of small strain-energy release rate variation. The present results were found to give a more realistic view of the fatigue delamination behaviour by taking either a recently defined strain-energy release rate range or the stress intensity factor range as the main fatigue driving parameter. The analysis took into account the typical power law fits, the influence of the stress ratio and the indication of a possible fatigue threshold. Finally, quasi-static tests conducted from the fatigue pre-crack showed significantly lower initiation critical strain-energy release rates than the ones previously measured.

Journal

Composite StructuresElsevier

Published: Dec 15, 2015

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