Journal
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
Volume -, Issue -, Pages -Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/09544062231182036
Keywords
Natural Fiber Composites (NFC); tensile tests; four-point bending tests; Low-Velocity Impact (LVI) tests; Finite Element Analysis (FEA)
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In the global composites industry, companies are increasingly studying innovative and green solutions for environmental sustainability goals. This study provides an overview of the behaviors of flax/epoxy and hemp/epoxy laminates in various mechanical tests. Both experimental and numerical approaches were used to analyze the materials and simulate the load-displacement behavior and damage evolution of the laminates. The results show that structural components in composite material reinforced with natural fibers can be designed and manufactured successfully.
Nowadays, in the global composites industry, an increasing number of companies are studying high-quality innovative and green solutions, in order to achieve the environmental sustainability goals. In this context, the use of a natural fiber reinforced polymer in the design of structural components needs to be validated through experimental mechanical tests. This study provides an overview of the behaviors of flax/epoxy and hemp/epoxy laminates subjected to tensile, four-point bending, and Low-Velocity Impact (LVI) tests, both from an experimental and numerical point of view. For each type of test, finite element models were simulated using the explicit code LS-DYNA in order to characterize the materials, reproduce the load-displacement plots, and analyze the damage evolution of the laminates. Two different types of mesh modeling were investigated for the models: shell and solid elements. In both cases, a proper contact modeling between layers was carried out to account for delamination phenomena of the material. The results obtained show an agreement between the experimental response and the simulated one, highlighting the possibility of designing and manufacturing structural components in composite material reinforced with natural fibers.
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