Abstract
In this work, interfacial fracture toughness between treated fiber and matrix was investigated by using double shear test method. Susrface treatment on the oil palm empty fruit bunch (OPEFB) fibers was performed to improve the interfacial bosnding properties of natural fiber reinforced Poly(L-lactide acid) composites. Three fibers model composite and four fibers model composite were prepared for the double shear test. The interfacial fracture toughness of both model composites is dependent on matrix length. In addition, the interfacial fracture toughness and the critical interfacial shear stress were increased with increasing the concentration of NaOH and the duration of surface treatment.
Highlights
Fiber reinforced plastic (FRP) composites have played an important role in various applications for their high specific strength and modulus
Mode II interfacial fracture toughness between treated oil palm empty fruit bunch (OPEFB) fiber and Poly(L-lactide acid) (PLLA) composite was evaluated by using the double shear test method which consists of 3 fibers model composite and 4 fibers model composite
The following conclusions can be drawn from this work: 1) The interfacial fracture toughness of the model composites is dependent on matrix length
Summary
Fiber reinforced plastic (FRP) composites have played an important role in various applications for their high specific strength and modulus. How to cite this paper: Sia, C.V., et al (2014) Interfacial Fracture Toughness Evaluation of Poly(L-lactide acid)/Natural Fiber Composite by Using Double Shear Test Method. Koiwa et al [20] introduced the measurement on the interfacial fracture toughness of Mode I and Mode II crack growth by using real size model composite. They reported a significant increase in fracture toughness with increasing bonding length. Mode II interfacial fracture toughness between treated oil palm empty fruit bunch (OPEFB) fiber and Poly(L-lactide acid) (PLLA) composite was evaluated by using the double shear test method which consists of 3 fibers model composite and 4 fibers model composite. Scanning electron microscope (SEM) was utilized to observe the morphology of the crack propagation between fiber/matrix interfaces
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