Time of Flight Diffraction Technique (ToFD) Assists in Quality Assurance of Parts Production and Mechanical Structures

Abstract

The Time of Flight Diffraction Technique (ToFD) is a technique of non-destructive testing by ultrasound used for detecting faults and discontinuities in different components, ensuring the quality, reliability and safety. It is widely used in industry, particularly in the evaluation of mechanical parts and structures. It is widely used in the sectors oil/petrochemical, chemical, aeronautical, aerospace, steel, shipbuilding, electromechanical, pulp and paper, among others. The development and implementation of this technique was based on ISO 16828:2012 (Non-Destructive testing – Ultrasonic Testing – Time-of-Flight Diffraction Technique as a Method for Detection and Sizing of Discontinuities). Controlling the different characteristics of the system, from the specification of the ultrasonic characteristics, to the imaging technique, it was possible to identify the sources of uncertainty and estimate the ToFD measurement uncertainty.

Key-words:
Non destructive testing; Ultrasound; Time of Flight Diffraction Technique – ToFD; Metrology