The EN ISO 17640:2018 standard is an essential document in the field of non-destructive testing (NDT). It provides guidelines and requirements for the performance and evaluation of ultrasonic testing (UT) techniques. This article aims to explore the key aspects covered by this standard, including its scope, principles, and applications.
Scope of the Standard
The EN ISO 17640:2018 standard specifies the general principles for the ultrasonic testing of materials using pulse-echo techniques. It applies to metallic and non-metallic materials, regardless of their shape, thickness, or properties.
The standard defines the procedures for flaw detection, sizing, and characterization. It also covers the evaluation of indications caused by discontinuities in the material, such as cracks, voids, and inclusions.
Principles of Ultrasonic Testing
Ultrasonic testing relies on the principle of sound waves traveling through a material and reflecting back when encountering boundaries or defects. The standard emphasizes the importance of properly calibrating the equipment, selecting appropriate transducers, and ensuring adequate coupling between the transducer and the material.
Furthermore, it outlines the different types of probes and techniques that can be used, such as contact and immersion testing. It also discusses signal processing, including parameters like gain, time-base, and distance-amplitude correction.
Applications and Benefits
EN ISO 17640:2018 has wide-ranging applications in various industries, including manufacturing, construction, and aerospace. It helps ensure product quality, detect hidden defects, and prevent accidents or failures that may have severe consequences.
By following the guidelines outlined in the standard, organizations can improve their inspection processes, minimize the risk of product failures, and enhance overall safety. Ultrasonic testing techniques provide valuable information about the integrity and quality of materials, allowing for informed decision-making and timely maintenance or repair.
Nina She