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Enhancing Fatigue Performance of Sandwich Composites with Nanophased Core
Joint Authors
Mahfuz, Hassan
Jeelani, S.
Zainuddin, S.
Source
Issue
Vol. 2010, Issue 2010 (31 Dec. 2010), pp.1-8, 8 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2010-06-07
Country of Publication
Egypt
No. of Pages
8
Main Subjects
Engineering Sciences and Information Technology
Chemistry
Civil Engineering
Abstract EN
We report fatigue performance of sandwich composites with nanophased core under shear load.
Nanophased core was made from polyurethane foam dispersed with carbon nanofiber (CNF).
CNFs were dispersed into part-A of liquid polyurethane through a sonication process and the loading of nanoparticles was 1.0 wt%.
After dispersion, part-A was mixed with part-B, cast into a mold, and allowed to cure.
Nanophased foam was then used to fabricate sandwich composites.
Static shear tests revealed that strength and modulus of nanophased foams were 33% and 19% higher than those of unreinforced (neat) foams.
Next, shear fatigue tests were conducted at a frequency of 3 Hz and stress ratio (R) of 0.1.
S-N curves were generated and fatigue performances were compared.
Number of cycles to failure for nanophased sandwich was significantly higher than that of the neat ones.
For example, at 57% of ultimate shear strength, nanophased sandwich would survive 400,000 cycles more than its neat counterpart.
SEM micrographs indicated stronger cell structures with nanophased foams.
These stronger cells strengthened the sub-interface zones underneath the actual core-skin interface.
High toughness of the sub-interface layer delayed initiation of fatigue cracks and thereby increased the fatigue life of nanophased sandwich composites.
American Psychological Association (APA)
Zainuddin, S.& Mahfuz, Hassan& Jeelani, S.. 2010. Enhancing Fatigue Performance of Sandwich Composites with Nanophased Core. Journal of Nanomaterials،Vol. 2010, no. 2010, pp.1-8.
https://search.emarefa.net/detail/BIM-492562
Modern Language Association (MLA)
Zainuddin, S.…[et al.]. Enhancing Fatigue Performance of Sandwich Composites with Nanophased Core. Journal of Nanomaterials No. 2010 (2010), pp.1-8.
https://search.emarefa.net/detail/BIM-492562
American Medical Association (AMA)
Zainuddin, S.& Mahfuz, Hassan& Jeelani, S.. Enhancing Fatigue Performance of Sandwich Composites with Nanophased Core. Journal of Nanomaterials. 2010. Vol. 2010, no. 2010, pp.1-8.
https://search.emarefa.net/detail/BIM-492562
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-492562