Non-destructive testing (NDT) is commonly thought of as a broad field. However, at its core, it refers to a good cluster of tested review ways to analyze the soundness of a cloth, part or structure while not with chemicals or physically neutering it. When it involves correct results, non-destructive testing is reliable due to the variability of obtainable and complementary choices. Any given piece of kit or machinery may be subject to a variety of NDT that eliminates the danger of oversight or quality. This paper consists of a detailed review about the latest researches carried out for finding out the defects using LPT and Ultrasonic method and how it improves the quality of the products by reducing the time taken for testing. NDT is one of the finest and accurate quality tool used in reducing the costs of testing. The Liquid Penetrant Testing (LPT) technique is usually used for the scrutiny of non-ferrous materials and non-magnetic materials like Al, chrome steel in addition as alternative materials which may not be inspected by the Magnetic Particle technique. Ultrasonic testing is mostly used for finding minute deflections and flaws in the materials using transducers.