What does a tensile test measure in weld testing?

The tensile test is a fundamental procedure in weld testing that primarily measures the ultimate strength of the welded joint. This test involves applying a pulling force to the welded specimen until it fails, allowing evaluators to determine the strength and ductility of the weld. By doing so, it ensures that the weld meets the minimum required strength standards essential for its intended application in structural and mechanical components.

This measurement is crucial because a weld must be strong enough to withstand the loads it will encounter in service. Assessing the weld's ultimate strength helps verify that it can perform effectively under the expected conditions, providing assurance of the safety and reliability of the construction. While other aspects of weld quality, such as aesthetics and joint thickness, are important, they do not directly relate to the primary purpose of a tensile test, which is focused on strength assessment.