Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response
Article
Article Title | Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response |
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ERA Journal ID | 44448 |
Article Category | Article |
Authors | Moudood, Abdul (Author), Rahman, Anisur (Author), Ochsner, Andreas (Author), Islam, Md Mainul (Author), Ali, Mohammad Yeakub (Author) and Francucci, Gaston (Author) |
Journal Title | Advances in Materials Science and Engineering |
Journal Citation | 2020, pp. 1-7 |
Article Number | 4785970 |
Number of Pages | 7 |
Year | 2020 |
Publisher | Hindawi Publishing Corporation |
Place of Publication | United Kingdom |
ISSN | 1687-8434 |
1687-8442 | |
Digital Object Identifier (DOI) | https://doi.org/10.1155/2020/4785970 |
Web Address (URL) | https://www.hindawi.com/journals/amse/2020/4785970/ |
Abstract | The moisture absorption behavior of flax fiber-reinforced epoxy composites is deliberated to be a serious issue. This property restricts their usage as outdoor engineering structures. Therefore, this study provides an investigation of moisture in flax fibers on the performance of the flax/epoxy composite materials based on their shear responses. The ±45° aligned flax fibers exposed to different relative humidities (RH) and the vacuum infusion process was used to manufacture the composite specimens. The optimum shear strength (40.25 ± 0.75 MPa) was found for the composites manufactured with 35% RH-conditioned flax fibers, but the shear modulus was reduced consistently with increasing RH values. Although shear strength was increased because of fiber swelling with increased moisture absorption rate until 35% RH environments with good microstructures, nonetheless, strength and modulus both started to decrease after this range. A very poor microstructure has been affirmed by the SEM images of the composite samples conditioned at 90% RH environments. |
Keywords | Flax fiber composites, Shear response, Microstructure, Mechanical testing, Relative humidity |
ANZSRC Field of Research 2020 | 401602. Composite and hybrid materials |
Byline Affiliations | Griffith University |
Esslingen University of Applied Sciences, Germany | |
School of Mechanical and Electrical Engineering | |
University of Technology, Brunei | |
National University of Mar del Plata, Argentina | |
Institution of Origin | University of Southern Queensland |
https://research.usq.edu.au/item/q5ww9/effects-of-different-relative-humidities-on-flax-fibers-prior-to-manufacturing-their-composites-based-on-the-shear-response
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