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The aim of this study is to compare the metallic and natural fiber reinforced polymer composite bone plates used in humerus fractures. A 3D finite element model was developed to analyze the performance of both types of plates. This study proposed on fabrication of natural fiber powdered material (like Sisal (Agave sisalana), Banana (Musa sapientum) and Roselle (Hibiscus sabdariffa)) Reinforced Polymer (NFRP) composite plate material with bio epoxy resin. Instead of orthopaedics alloys such as titanium, cobalt chrome, stainless steel and zirconium, this plate material can be used for both internal and external fixation on human body for fractured bone. In this study, flexural rigidity of Sisal and banana (hybrid), Roselle and banana (hybrid) and Roselle and sisal (hybrid) composite at dry and wet conditions was studied. In this study the composition of the microstructure of composites specimens were studied using Electron Dispersive X-Ray Thermo detector and Scanning Electron Microscope.

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Thermal decomposition of picryl azide has been studied under non‐isothermal and isothermal conditions using a simultaneous TG‐DSC technique. Picryl azide melts and then decomposes to give 4,6‐dinitrobenzofurazan oxide which melts again and decomposes to gaseous products. Enthalpies (ΔH) of fusion and decomposition have been calculated. The order of reaction (n) is calculated and found to be one. Arrhenius parameters like specific rate constant (k), activation energy (Eact) and frequency factor (Z) have been calculated under both conditions using different methods. The values calculated from non‐isothermal and isothermal techniques agree fairly well with each other. The observed lower activation energy when compared with phenylazide and 2‐nitrophenyl azide is probably due to an enhanced ortho effect.

Composite materials with thermoplastic matrices and a reinforcement of natural fibers are increasingly regarded as an alternative to material replacement for various applications. The substitution of the traditionally used composite of natural fibers such as sisal, banana and jute can lead to a reduction of the component's weight and furthermore to a significant improvement of specific properties like impact strength, compression strength. One of the major fields of application for such materials can be found in structural components manufacturing of construction helmets. In this project work natural fiber particle reinforced materials such as Sisal, Banana and jute reinforced polymer composite material with epoxy resin has been used for fabrication of construction helmet. Impact strength and compression strength values are identified. The helmet manufacturing aspects are reviewed. Both the thermoplastic and the natural fiber composite shell manufacturing techniques are presented with specific mentioning of the advantages and disadvantages to each type from the manufacturing point of view.