What is required regarding controls when performing notch toughness testing?

Documentation of temperature and conditions is essential when performing notch toughness testing because notch toughness, which is a measure of a material's ability to absorb energy during deformation, is significantly influenced by both temperature and testing conditions. These factors can alter the material properties and the results of the test.

For instance, performing tests at temperatures that deviate from specified levels could lead to different outcomes, thereby impacting the assessment of the material's toughness and its suitability for the intended application. Recognizing the temperatures and conditions under which the tests are carried out ensures the integrity and reproducibility of the results, which are crucial for comparisons and adherence to relevant standards.

Thus, maintaining accurate documentation allows for a clear understanding of the environment in which the tests were conducted, facilitating reliable interpretation of the material's performance, ensuring compliance with industry standards, and helping identify any potential deviations in future tests.