Which of the following factors can affect NDT testing results?

Environmental conditions, particularly temperature, can significantly impact NDT testing results. For various non-destructive testing methods, such as ultrasonic testing, radiographic testing, and magnetic particle testing, temperature can influence the properties of the materials being tested. For example, extreme temperatures may alter the physical characteristics of a material, such as its density or elasticity, which can affect the reliability of the testing outcomes.

Additionally, certain NDT techniques have specific temperature ranges within which they operate optimally. When testing in environments outside these ranges, there might be issues such as equipment malfunction, reduced sensitivity of detection methods, or changes in material properties that could lead to incorrect interpretations of the results. Therefore, understanding and controlling environmental conditions is crucial to ensuring accurate and reliable NDT outcomes.