A Review on Structural Performance of Engineering Materials

Structural performance describes how an engineering material and the component manufactured from it carry load, deform, resist damage, and retain functional capacity throughout service. The response is controlled not by nominal strength alone, but by the interaction among composition, microstructure, defects, geometry, loading history, environment, and manufacturing process. This paper presents an integrated framework for evaluating structural performance across metallic and advanced engineering materials. It discusses stiffness, strength, ductility, toughness, fatigue resistance, creep, corrosion, fracture, residual stress, and damage tolerance as interconnected performance measures. The paper emphasizes that a material with high static strength is not automatically the best structural material because service reliability may be governed by fatigue, crack growth, corrosion, temperature, or loss of ductility. Representative stress–strain behaviour is used to explain elastic response, yielding, plastic deformation, and fracture. The paper also examines high-strength and additively manufactured materials and their microstructural and residual-stress considerations.