What common material property can significantly affect NDT method selection?

Density is a significant material property that can greatly influence the selection of a Non-Destructive Testing (NDT) method. Different NDT techniques interact with materials in varied ways depending on their density. For instance, methods like radiography, ultrasonics, and eddy current testing may yield different results based on the material's density.

In radiographic testing, denser materials attenuate X-rays more than less dense materials, affecting image quality and the visibility of defects. In ultrasonic testing, the density of the material determines the velocity of sound propagation, which in turn influences the accuracy of measurements and the ability to detect flaws within the material.

Choosing the appropriate NDT method is crucial, as the effectiveness of the method can vary significantly with changes in density. Materials with very high or low densities may not be suitable for certain techniques or may require specific adjustments to the testing parameters to ensure accurate results. Thus, understanding density is essential for making informed decisions regarding NDT method selection.