Exploring the flexural and impact properties of pure flax/epoxy and Kevlar/flax/epoxy composites through experimental and numerical analysis

被引：4
作者：
Hadj-Djilani, Abdelhadi [1 ,2 ]
Kioua, Abderraouf [1 ]
Zitoune, Redouane [3 ]
Toubal, Lotfi [1 ]
Bougherara, Habiba [2 ,4 ]
机构：
[1] Univ Quebec Trois Rivieres, Dept Mech Engn, Trois Rivieres, PQ, Canada
[2] Toronto Metropolitan Univ, Dept Mech & Ind Engn, Toronto, ON, Canada
[3] Univ Toulouse, Inst Clement Ader, UMR CNRS 5312, Toulouse, France
[4] Toronto Metropolitan Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B2K3, Canada
来源：
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART L-JOURNAL OF MATERIALS-DESIGN AND APPLICATIONS | 2023年 / 237卷 / 11期
基金：
加拿大自然科学与工程研究理事会;
关键词：
Natural fibers; hybrid composites; bending; impact; FE analysis; fracture; NATURAL FIBER COMPOSITES; WOVEN CARBON-FIBERS; LOW-VELOCITY IMPACT; HYBRID COMPOSITE; MECHANICAL-PROPERTIES; CHARPY IMPACT; CHEMICAL TREATMENT; STACKING-SEQUENCE; DAMAGE BEHAVIOR; FLAX FIBERS;
D O I：
10.1177/14644207231178663
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Hybrid composites offer a viable alternative to conventional composites in terms of reduced cost and environmental impact. This study investigated the effect of hybridizing flax with Kevlar on the flexural and impact properties of Kevlar/flax/epoxy composites using three-point bending, drop-weight, and Charpy impact tests. The tested specimens were made of unidirectional flax fibers (F) and woven Kevlar fibers (K) in four configurations: unidirectional flax/epoxy [016F] (UFE), angle-ply flax/epoxy [+/- 454F]S (AFE), woven Kevlar/unidirectional flax/epoxy [0-902K/06F]S (UKFE), and woven Kevlar/angle-ply flax/epoxy [0-902K/+/- 453F]S (AKFE). The three-point bending test results showed that the ultimate strength and the flexural modulus of the UKFE increased by 15% compared to pure UFE and by more than threefold for AKFE compared to AFE laminates. Additionally, the results of the drop-weight test revealed a significant increase in the impact force by 30% for both unidirectional and angle-ply laminate configurations. Similarly, Charpy test results indicated a 60% improvement in the impact energies of the flax laminates. The predictions of the proposed finite element model agreed very well with the experimental results. These findings demonstrate the effectiveness of hybridizing two layers of Kevlar onto flax/epoxy composites in enhancing the composite's impact and flexural properties.
引用
收藏
页码：2761 / 2778
页数：18
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