Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response
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 comp...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Advances in Materials Science and Engineering |
| Online Access: | http://dx.doi.org/10.1155/2020/4785970 |
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| author | Abdul Moudood Anisur Rahman Andreas Öchsner Md Mainul Islam Mohammad Yeakub Ali Gaston Francucci |
| author_facet | Abdul Moudood Anisur Rahman Andreas Öchsner Md Mainul Islam Mohammad Yeakub Ali Gaston Francucci |
| author_sort | Abdul Moudood |
| collection | DOAJ |
| description | 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. |
| format | Article |
| id | doaj-art-d892bd26dcae44998229d24076a179d3 |
| institution | Kabale University |
| issn | 1687-8434 1687-8442 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Materials Science and Engineering |
| spelling | doaj-art-d892bd26dcae44998229d24076a179d32025-02-03T01:28:16ZengWileyAdvances in Materials Science and Engineering1687-84341687-84422020-01-01202010.1155/2020/47859704785970Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear ResponseAbdul Moudood0Anisur Rahman1Andreas Öchsner2Md Mainul Islam3Mohammad Yeakub Ali4Gaston Francucci5Griffith School of Engineering and Built Environment, Gold Coast Campus, Griffith University, Southport, Queensland 4222, AustraliaGriffith School of Engineering and Built Environment, Gold Coast Campus, Griffith University, Southport, Queensland 4222, AustraliaEsslingen University of Applied Sciences, Faculty of Mechanical Engineering, Kanalstrasse 33, 73728, Esslingen, GermanySchool of Mechanical & Electrical Engineering, University of Southern Queensland, West Street, Toowoomba, QLD 4350, AustraliaMechanical Engineering Programme Area, Faculty of Engineering, Universiti Teknologi Brunei, Tungku Highway, Gadong, Bandar Seri Begawan BE1410, Brunei DarussalamResearch Institute of Material Science and Technology (INTEMA-CONICET), National University of Mar del Plata, J. B. Justo 4302, B7608FDQ, Mar del Plata, ArgentinaThe 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.http://dx.doi.org/10.1155/2020/4785970 |
| spellingShingle | Abdul Moudood Anisur Rahman Andreas Öchsner Md Mainul Islam Mohammad Yeakub Ali Gaston Francucci Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response Advances in Materials Science and Engineering |
| title | Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response |
| title_full | Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response |
| title_fullStr | Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response |
| title_full_unstemmed | Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response |
| title_short | Effects of Different Relative Humidities on Flax Fibers prior to Manufacturing Their Composites Based on the Shear Response |
| title_sort | effects of different relative humidities on flax fibers prior to manufacturing their composites based on the shear response |
| url | http://dx.doi.org/10.1155/2020/4785970 |
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