Ultrasonic Thermometry for Manufacturing Materials Using the Pulse-Echo Method

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Core temperature of workpieces during manufacturing processes can vary significantly from the surface temperature. If the thermally induced expansion of the workpiece is estimated using the surface temperature, it may lead to a wrong estimation resulting in over or under-compensation for the effects of thermal expansion. Ultrasonic thermometry has been shown to measure the core temperature of steel sample of 100 mm (EN24T) with a resolution and accuracy of better than 0.5 °C and ±1 °C[1]. This study establishes the suitability of ultrasonic thermometry for other metals namely brass, stainless steel, aluminium, and mild steel. By using a calibrated temperature bath, the ultrasonic time-of-flight for different metals was measured. This was done to establish the relationship between the materials and the ultrasonic time-of-flight (TOF) in them at different temperature. The model that will be created using this measurement method can be used during dimensional inspection or subtractive manufacturing processes to aid the control or compensation for the effects of temperature change.
Original languageEnglish
Title of host publicationEuspen Special Interest Group Meeting
Subtitle of host publicationThermal Issues
Number of pages2
Publication statusE-pub ahead of print - 13 Mar 2024
EventEUSPEN Special Interest Group Meeting: Thermal Issues - Park Plaza, Eindhoven, Netherlands
Duration: 13 Mar 202414 Mar 2024


ConferenceEUSPEN Special Interest Group Meeting: Thermal Issues
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