نوع مقاله : مقاله علمی
عنوان مقاله English
نویسندگان English
Due to their unique mechanical, electrical, and thermal properties, nanomaterials have secured a special position in materials science and advanced industrial applications. In this review article, nanomaterials are classified into four categories zero, one, two, and three-dimensional based on their structural dimensions, and their mechanical behavior in the form of nanocomposites has been investigated. The primary focus is on carbon nanomaterials, including graphene and single-walled and multi-walled carbon nanotubes, as well as ceramic and magnetic nanomaterials such as TiO₂, Al₂O₃, SiO₂, Fe₃O₄, and Fe₂O₃. Mechanical properties, including Young’s modulus, shear modulus, and Poisson’s ratio, along with the elastic stiffness components of the matrix, have been analyzed within the framework of analytical and micromechanical models. In particular, the rule of mixtures and the Halpin–Tsai model have been employed to predict the elastic behavior of nanocomposites, and the effects of parameters such as volume fraction, orientation, aspect ratio, and nanoparticle dispersion quality have been evaluated. Additionally, synthesis methods including sol–gel, co-precipitation, and chemical vapor deposition (CVD) have been examined regarding their impact on particle size, morphology, and uniformity. Study results indicate that optimizing the interfacial structure and the uniform distribution of nanophases leads to an increase in the Young’s modulus, tensile strength, and hardness of the composite. Furthermore, accounting for nano-scale effects and modifying classical models with multi-scale approaches significantly increases the accuracy of predicting elastic behavior. Finally, industrial applications in wear-resistant coatings, magnetic sensors, electromechanical systems, and aerospace industries are reviewed, and the existing challenges in dispersion and multi-scale modeling are analyzed.
کلیدواژهها English