Advances Researches on Non Destructive Testing: A Review

This paper provides the recent advances and researches about non-destructive testing (NDT) methods for defect characterization in engineering materials and composites. The paper covers the review on the capabilities of NDT applications such as Visual Testing (VT), Ultrasonic Testing (UT), Thermography, Radiographic Testing (RT), Electromagnetic Testing (ET), Acoustic Emission (AE) and shearography testing with respect to advantages and disadvantages of these methods. Further methods are classified on basis of their intrinsic characteristics and their applications. Mostly, an NDT evaluator uses only one non-destructive test method to perform the evaluation. If the scope of work is straight forward, using a single test method is acceptable. However, there are times when a single test method does not provide enough information about the material integrity and thereby combination of different methods is essential. Non destructive testing is widely applied in power plants, aerospace, nuclear industry, military and defence, storage tank inspection, pipe and tube inspection and composite defects characterization. This paper mainly focuses on the scope of NDT application for composite materials. (C) 2017 Elsevier Ltd. All rights reserved.