What type of test is pressure testing generally considered?

Pressure testing is classified as a destructive test because it involves applying pressure to a component or system to check for leaks or weaknesses. During this process, the item being tested is subjected to conditions that exceed its normal operating limits, which can lead to permanent deformation or failure if the component cannot withstand the pressure. This means that while the test may provide valuable information regarding the integrity and reliability of the material, it often results in damage to the item being tested, thereby making it unsuitable for further use without repair or replacement.

In contrast, non-destructive testing methods do not impair the usefulness of the item being inspected, allowing it to remain in service after testing. Safety-critical tests assess systems or components that are essential for the safety of operations, but pressure testing itself is primarily focused on the material's ability to withstand designated stress levels. Failure-mode testing relates more to understanding potential points of failure rather than evaluating the component under high pressure. Therefore, categorizing pressure testing as a destructive test accurately reflects the nature of the evaluation process it entails.