Non-destructive evaluation (NDE) is a method of testing materials and components without causing any damage to the material or component being tested. It is used to assess the integrity of materials and components without causing any permanent damage. NDE is used in a variety of industries, including aerospace, automotive, and medical. It is a cost-effective way to test materials and components without having to replace them. NDE is also used to detect flaws in materials and components, such as cracks, corrosion, and other defects. NDE can be used to detect flaws in materials and components before they become a problem. NDE is a valuable tool for ensuring the safety and reliability of materials and components. It can also be used to extend the life of materials and components, as well as to reduce costs associated with repairs and replacements.