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- Title
Prediction Models of Mechanical Properties of Jute/PLA Composite Based on X-ray Computed Tomography.
- Authors
Zhao, Xintao; Li, Junteng; Su, Shangbin; Jiang, Ning
- 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.
- Subjects
COMPUTED tomography; POLYLACTIC acid; MECHANICAL models; PREDICTION models; FIBER orientation; PROBABILITY density function
- Publication
Polymers (20734360), 2024, Vol 16, Issue 1, p160
- ISSN
2073-4360
- Publication type
Article
- DOI
10.3390/polym16010160