# A Model to Study the Creep Behavior of Carbon Fiber/Epoxy Resin Composites Under Temperature
## 2 Literature Review  
These fibers are used in a variety of aerospace and automotive applications, sports equipment, wind turbine blades, medical devices, and the navy. Some main results concerning the use of composite materials made with carbon fibers in an epoxy matrix are presented in the following. Understanding the mechanisms of damage of carbon fiber epoxy resin composites (CFRPs) under laser irradiation has grown in importance as laser technology has continued to progress. One paper [5] investigates the impact on CFRP when changing laser irradiation characteristics, such as power densities and energy distributions inside the laser point. Computed tomography (CT), thermal analysis, and micro-morphological inspection were used to examine the CFRP damage mechanisms. A finite element model was created to model the carbon fiber epoxy resin composites' laser irradiation process. Excellent agreement between the simulated and experimental results was shown. The paper offers a theoretical justification for improving CFRP safety in laser-intensive settings. Vacuum-assisted resin infusion (VARI)-fabricated carbon fiber composites have found widespread application across a range of sectors. The viscosity is greatly increased by inorganic nanoparticles that increase the strength and toughness of matrices, which complicates the VARI process [6]. These improvements are noticeably greater than those of CFRCs that have been individually modified by fiber sizing or matrix reinforcement. With improved physicochemical and mechanical properties, graphene-related materials (GRM) exhibit significant promise as reinforcement in polymeric matrices. One interesting method to improve the fracture toughness of epoxy resin (ER) is to incorporate graphene nanoplatelets (GNPs) into the resin [7]. In order to identify the ideal circumstances for the incorporation of GNP-ER as a matrix to create hybrid laminated composites with carbon fiber fabric, this work sought to create nanocomposites based on ER and GNP by analyzing various mixing techniques and determining the impact of GNP content on the resins' properties. According to tensile testing, ultrasonication increased the nanocomposites' ultimate tensile strength (UTS) by about 14% and their deformation at break by up to 46%. A hygothermal aging model describes how engineering constants in T700 carbon fiber/epoxy resin composites are damaged [8]. The model is validated by tensile tests, surface morphology evaluations, and mass change observations before and after seawater immersion. According to the findings, single-layer laminates may absorb saturated moisture at a rate of 0.35% when submerged in seawater. As moisture absorption increases, the longitudinal tensile modulus of the composite drops by an order of 10-5%, whereas there is a 10-3% drop in the other engineering constants. The longitudinal tensile modulus reduces by 0.84% while the other engineering constants decrease by 100% as the temperature rises. The temperature dependency of fiber-reinforced composites can be approached in a variety of ways, and in many real-world applications, the impact of temperature is important. The Ramberg-Osgood connection is used in [9] to suggest a constitutive law for the investigation of this dependence, which yielded satisfactory estimates for the temperature range for which the study was conducted. The suggested model was validated in a laboratory setting at temperatures ranging from \(-45\)\({}^{\circ}\)C to \(75\)\({}^{\circ}\)C. Compared to the current models that it was compared with in the paper, the model suggested in the paper had the advantage of having fewer parameters and producing estimates with a greater level of precision. In [10], a study on an analytical model of the structural elements derived by additive manufacturing is described. Ref. [11] examines continuous carbon fiber-reinforced thermoplastics. With the same amount of stress in two scenarios, the lifetimes obtained from static tests and cyclic loads are compared.