Ammar M Al-Areqi, Subbarayan Sivasankaran, Bandar A. Aloyaydi, Fahad A. Al-Mufadi
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Investigating the low velocity impact response of additively manufactured tri-material composite structure with application on helmet
Additively manufactured composite structures can be utilized in the production of engineering materials with enhanced mechanical properties. In this work, mono-, bi-, and tri-material structures (MMS, BMS, and TMS, respectively) were fabricated using additively manufactured PLA (poly-lactic acid) lattice frames embedded with Polyurethane (PU) foam and milled glass fibers (MGFs). TMS samples were reinforced with MGFs at 1.25, 2.5, 3.75, and 5.0 vol%, indicated as TMS-1, TMS-2, TMS-3, and TMS-4, respectively. The mechanical response of these composite structures was tested by applying a low-velocity impact load. The effects of MGF content and variations in applied impact energy, and variation in microstructure on the composite samples were investigated. Results revealed an enhanced mechanical response of TMS samples compared to MMS and BMS. Additionally, with increasing applied impact energy, the TMS samples showed an improved corresponding response, with a peak absorbed energy of 96.03% of the applied 60 J energy. Furthermore, to study the applicability of the composite structures in real-life applications, helmet prototypes made of MMS, BMS, and TMS were designed and tested under the applied low-velocity load, showing an improved response of TMS helmet samples compared to the other composite structures.
期刊介绍:
The Journal of Thermoplastic Composite Materials is a fully peer-reviewed international journal that publishes original research and review articles on polymers, nanocomposites, and particulate-, discontinuous-, and continuous-fiber-reinforced materials in the areas of processing, materials science, mechanics, durability, design, non destructive evaluation and manufacturing science. This journal is a member of the Committee on Publication Ethics (COPE).