🔍 NDT Methods & Acceptance Criteria Across Codes: A Quick Guide for Engineers In pressure equipment and piping industries, Non-Destructive Testing (NDT) plays a crucial role in ensuring the integrity and safety of components. Different codes and standards define how these tests are applied and what acceptance criteria must be met. Below is a summary of the main NDT methods and their references: | Welding Fabrication World

Tap testing an NDT Technique “Tap Test is an old and simple technique to inspect composite materials. Its main objective is to detect discontinuities, especially detachments and delaminations.” Reference : linkspringer . com One of the disadvantages of composite is detecting the damage and its extent. Tap testing is one of the simplest and requires no extra equipment. You mark it in a 10mm × 10mm grid. Coin tap testing involves tapping in a regular manner and listening for a dull or dead sound,