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Article

Prediction Models of Mechanical Properties of Jute/PLA Composite Based on X-ray Computed Tomography

1
School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo 255000, China
2
School of Mechanical Engineering, Shandong University of Technology, Zibo 255000, China
3
School of Metallurgy and Automotive Engineering, Shandong Vocational College of Industry, Zibo 255000, China
4
Shandong Ruicheng Aerospace Carbon Fiber Industrial Technology Institute Co., Ltd., Jining 272000, China
*
Author to whom correspondence should be addressed.
Polymers 2024, 16(1), 160; https://doi.org/10.3390/polym16010160
Submission received: 3 November 2023 / Revised: 18 December 2023 / Accepted: 21 December 2023 / Published: 4 January 2024

Abstract

The tensile strength and modulus of elasticity of a jute/polylactic acid (PLA) composite were found to vary nonlinearly with the loading angle of the specimen through the tensile test. The variation in these properties was related to the fiber orientation distribution (FOD) and fiber length distribution (FLD). In order to study the effects of the FOD and FLD of short fibers on the mechanical properties and to better predict the mechanical properties of short-fiber composites, the true distribution of short fibers in the composite was accurately obtained using X-ray computed tomography (XCT), in which about 70% of the jute fibers were less than 300 μm in length and the fibers were mainly distributed along the direction of mold flow. The probability density functions of the FOD and FLD were obtained by further analyzing the XCT data. Strength and elastic modulus prediction models applicable to short-fiber-reinforced polymer (SFRP) composites were created by modifying the laminate theory and the rule of mixtures using the probability density functions of the FOD and FLD. The experimental measurements were in good agreement with the model predictions.
Keywords: jute/PLA composite; XCT; fiber orientation distribution; fiber length distribution; mechanical prediction model; tensile test jute/PLA composite; XCT; fiber orientation distribution; fiber length distribution; mechanical prediction model; tensile test

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MDPI and ACS Style

Zhao, X.; Li, J.; Su, S.; Jiang, N. Prediction Models of Mechanical Properties of Jute/PLA Composite Based on X-ray Computed Tomography. Polymers 2024, 16, 160. https://doi.org/10.3390/polym16010160

AMA Style

Zhao X, Li J, Su S, Jiang N. Prediction Models of Mechanical Properties of Jute/PLA Composite Based on X-ray Computed Tomography. Polymers. 2024; 16(1):160. https://doi.org/10.3390/polym16010160

Chicago/Turabian Style

Zhao, Xintao, Junteng Li, Shangbin Su, and Ning Jiang. 2024. "Prediction Models of Mechanical Properties of Jute/PLA Composite Based on X-ray Computed Tomography" Polymers 16, no. 1: 160. https://doi.org/10.3390/polym16010160

APA Style

Zhao, X., Li, J., Su, S., & Jiang, N. (2024). Prediction Models of Mechanical Properties of Jute/PLA Composite Based on X-ray Computed Tomography. Polymers, 16(1), 160. https://doi.org/10.3390/polym16010160

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