ToFD & HTHA Transducers
Sonatest manufactures a complete range of high performance, advanced, high technology ultrasonic (UT) and phased array (PA) transducers for flaw detection and thickness measurement applications, including those used in weld inspection.
ToFD Frequently Asked Questions
ToFD, or Time of Flight Diffraction, relies on the tip diffractions created when an ultrasonic wave interacts with a discontinuity in the test material. ToFD utilises two ultrasonic transducers in a pitch-catch setup with one acting as the transmit (Tx) and the other as the receiver (Rx). An ultrasonic pulse is transmitted into the sample and the signals displayed in order of the time taken to reach the Rx, any defect tip diffracted signals will be displayed in the final scan. This makes ToFD especially effective in detecting and sizing flaws in weld areas.
Our ToFD probes have a normal operating temperature of 0°C to 50°C. High temperature versions of the ToFD wedges are available on request. Our sales team can assist in finding the correct high temperature solution for your application, including new high-temp wedge options suited to specific industry standards.
ToFD technology offers enhanced imaging capabilities and flexibility over conventional ultrasonics. Created for the nuclear industry, ToFD provides great sensitivity to defects of any orientation and produces high accuracy in sizing. Fully integrated into our Veo3, it facilitates detailed inspections, particularly of weld joints, and contributes significantly to efficient user operations.
Sonatest provides a range of options for ToFD transducers and wedges for a range of applications to ensure they meet the specific requirements of various testing environments. Our engineering team is also available to support the development of new probe or wedge configurations for advanced inspection setups.