Citation

Yaacob, Izzat Najmi Mohd and Mazlan, Norkhairunnisa and Ramle, Muhammad Faizridhwan and Tay, Chai Hua (2026) Assessment of laminated damage in natural fibre-reinforced polymer biocomposites using guided ultrasonic waves: A case study. In: Damage Analysis of Natural Fiber-reinforced Polymer Biocomposites. Elsevier, pp. 473-516. ISBN 978-044328858-6, 978-044328859-3

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Abstract

Biocomposite materials, made from natural fibres and polymer matrix, have a wide range of applications. These materials’ design flexibility, exceptional characteristics and aesthetic appeal drive their increasing use. The application of biocomposites depends on the interaction at the fibre-matrix interface. Because of their unique properties and the complexities of load and environment, analysing the integrity and durability of composite buildings is difficult. Over the past few decades, researchers have developed damage models and experimental evidence to better understand the structural behaviour of laminated biocomposites. Guided ultrasonic waves (GUWs) are a type of elastic wave that can propagate along the surfaces and through the thickness of laminated composite materials, such as biocomposites. These waves are used for non-destructive techniques (NDT) to detect and characterise damage within the material. Many researchers have recently used this technique for several reasons, such as its high sensitivity to defects, ability to inspect large areas and cost-effectiveness. Due to the complexity of the structural design of biocomposite, this technique is also very practical for use in structure health monitoring (SHM). This case study will explore and discuss the use of GUWs for detecting laminate damage in biocomposite materials. Besides, the process and analysis of detecting the laminated damage of biocomposite using GUWs will also be reviewed. Currently, two types of fibre optic sensors have been addressed, which are fibre Bragg gratings (FBG) and Doppler effect-based fibre optic (FOD) sensors, with guided wave detection systems built for both. These fibre optic sensors detected guided waves generated by a piezoelectric transducer as they travelled through a quasi-isotropic biocomposite laminate. It is shown that both the FBG and FOD sensors successfully detect the presence of delamination damage in composite laminates by reducing the amplitude of processed guided wave signals. Furthermore, the FOD sensor was able to capture the delamination-induced fundamental shear horizontal guided waves, which the FBG sensor was unable to do. This is because the spiral FOD sensor is omnidirectional in ultrasonic detection, while the sensitivity of the FBG sensor is dependent on the bonding direction. Besides, the properties of these fibre optic sensors in GUW wave detection were thoroughly compared. In every section, efforts have been made to analyse the most relevant literature, discuss in a critical manner the results and conclusions and identify possibilities for future work. This study will contribute to the development of the sustainability of biocomposite as an advanced material in SHM.

Item Type:	Book Section
Uncontrolled Keywords:	Polymer
Subjects:	Q Science > QD Chemistry > QD241-441 Organic chemistry > QD415-436 Biochemistry
Divisions:	Faculty of Engineering and Technology (FET)
Depositing User:	Ms Rosnani Abd Wahab
Date Deposited:	22 Dec 2025 02:22
Last Modified:	22 Dec 2025 02:22
URII:	http://shdl.mmu.edu.my/id/eprint/15083

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