<h1>In recent years, the popularity of tooth colored restorative material has led to a rapid increase in the use of resins. This critical review paper is meant to be useful contribution to the recognition & understanding of problems related to the failures of composite restoration. This review categorizes the challenges as those related to the restorative materials, the dentist and the patients. In spite of the major improvements in both physical and mechanical characteristics following factors are still of major concern, such as improper case selection, isolation, wear resistance, cavity preparation, placement of composites, curing, finishing & polishing. Major problems associated with composites failures are polymerization shrinkage & contraction stress related to polymerization shrinkage, water sorption, solubility, discoloration of restoration (staining), elution of material from restoration, marginal failures, secondary caries, and fracture of the restoration, post-operative sensitivity, and micro-leakage.</h1>
In many recent years the use of composite materials increases in many fields, for example agricultural uses, where these materials are characterized by good mechanical properties, tenacity and light weight. Among many other materials for the reinforcement of composites, technical fabrics are increasingly being used for the same purpose, especially from carbon fiber, which have good mechanical properties. During tensile stress these fabrics are elongated in the direction of tensile force, and at the same time they contract crosswise in relation to the action of the tensile force. In this Project the tensile properties of regular carbon fabrics and woven fabrics made from carbon fiber yarns were investigated. Static structural analysis of Regular carbon fabrics and woven fabrics base carbon fiber specimen will be done using ACP tool in ANSYS 19 software.
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