What type of tests evaluates mechanical properties such as strength and toughness of a weld?

Mechanical tests are specifically designed to evaluate the mechanical properties of materials, including strength, toughness, ductility, and hardness. In the context of welding, these tests assess how well a weld can withstand various forces and conditions it may encounter in service.

When it comes to evaluating welds, mechanical tests often involve applying stress to the welded joint to determine its tensile strength, impact toughness, and other relevant properties. These assessments are crucial for ensuring that the weld meets the necessary standards and performance requirements for its intended application.

Visual tests pertain more to surface examination of the weld for defects, while non-destructive testing (NDT) tests are used to identify internal and surface flaws without causing damage to the weld. Performance tests may focus on evaluating the overall behavior of welded structures under specific conditions but do not directly assess the mechanical properties in the detailed manner that mechanical tests do.