What is often assessed during material testing in aircraft metal structures?

Material testing in aircraft metal structures primarily focuses on evaluating the mechanical properties and structural integrity of the materials used. This is crucial because aircraft are subject to various stresses and loads during operation, and understanding the strength, ductility, fatigue resistance, and other mechanical properties ensures that the materials can withstand these conditions without failure.

Mechanical properties include characteristics such as yield strength, ultimate tensile strength, hardness, and elongation, which are essential in determining how materials will perform under different loading conditions. Structural integrity assessments involve examining the material for flaws, such as cracks or inconsistencies, that could compromise safety and reliability.

While other aspects like density and weight may be factors in consideration for design and performance, they do not directly encompass the comprehensive evaluation necessary for safety in aviation. Similarly, while economic considerations like manufacturing costs are important in the broader context of aircraft design and production, they are not a focal point during the rigorous material testing phase. The primary goal of material testing is to ensure that the chosen materials will perform safely and effectively in service.