Next Article in Journal
Incorporation of Collagen in Calcium Phosphate Cements for Controlling Osseointegration
Previous Article in Journal
Finite Element Modeling of Multilayer Orthogonal Auxetic Composites under Low-Velocity Impact
Article Menu
Issue 8 (August) cover image

Export Article

Open AccessArticle
Materials 2017, 10(8), 909; https://doi.org/10.3390/ma10080909

Failure Behavior of Unidirectional Composites under Compression Loading: Effect of Fiber Waviness

1
Energy Research Institute at NTU/Interdisciplinary Graduate School, Nanyang Technological University, block S2-B3a-01, 50 Nanyang Avenue, Singapore 639798, Singapore
2
School of Mechanical and Aerospace Engineering, Nanyang Technological University, Singapore, 50 Nanyang Avenue, Singapore 639798, Singapore
3
School of Materials Science & Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
4
Energy Research Institute at NTU, Nanyang Technological University, Cleantech One, 1 Cleantech loop, #06-04, Singapore 637141, Singapore
*
Author to whom correspondence should be addressed.
Received: 5 July 2017 / Revised: 28 July 2017 / Accepted: 1 August 2017 / Published: 5 August 2017
(This article belongs to the Section Advanced Composites)
Full-Text   |   PDF [7269 KB, uploaded 5 August 2017]   |  

Abstract

The key objective of this work is to highlight the effect of manufacturing-induced fiber waviness defects on the compressive failure of glass fiber-reinforced unidirectional specimens. For this purpose, in-plane, through-thickness waviness defects (with different waviness severities) are induced during the manufacturing of the laminate. Numerical and experimental results show that the compressive strength of the composites decreases as the severity of the waviness defects increases. A reduction of up to 75% is noted with a wave severity of 0.075. Optical and scanning electron microscopy observations of the failed specimens reveal that kink-bands are created in the wavy regions and lead to failure. View Full-Text
Keywords: wind turbine blades; defects; laminates; in-plane fiber waviness; compressive strength; kink-band; failure; numerical and experimental analyses wind turbine blades; defects; laminates; in-plane fiber waviness; compressive strength; kink-band; failure; numerical and experimental analyses
Figures

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Nair, S.N.; Dasari, A.; Yue, C.Y.; Narasimalu, S. Failure Behavior of Unidirectional Composites under Compression Loading: Effect of Fiber Waviness. Materials 2017, 10, 909.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Materials EISSN 1996-1944 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top