Which of the following is NOT one of the Non-Destructive Techniques used in Mechanical Integrity Inspections?

Non-Destructive Techniques (NDT) are essential in Mechanical Integrity Inspections as they allow for the assessment of materials and structures without causing damage. The techniques commonly associated with NDT include radiographic and ultrasonic testing, both of which use different methods to determine the integrity of a material.

Radiographic testing utilizes X-rays or gamma rays to produce images of the internal structure of a material, revealing any hidden flaws. Ultrasonic testing employs high-frequency sound waves to detect imperfections within the material, effectively providing a way to assess the thickness and overall integrity.

Infrared thermography, while it may seem similar to these techniques in its application for inspecting materials, is a method primarily used for thermal inspection and monitoring, rather than assessing structural integrity through traditional NDT methods.

In this context, thermographic testing is distinctly focused on temperature variations and heat patterns rather than the direct structural evaluation that defines the other NDT methods mentioned. Therefore, thermography does not fit within the traditional category of Non-Destructive Techniques used for Mechanical Integrity Inspections, making it the correct choice for the question asked.