Wet-state Ultrasonic Measurements of Cylindrical Workpieces during Immersion Cooling
✍ Scribed by D. Stoebener; G. Goch
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 533 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0933-5137
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✦ Synopsis
An ultrasound system was developed for recording the temporally and spatially resolved wetting behaviour of workpieces immersed in oil as quenching medium. The system is based on the measurement of the echo amplitude, reflected from the vapour blanket, the workpiece itself or the vapour bubbles, which occur in the nucleate boiling stage. An optically transparent oil was chosen for the experiments, so that the quenching process could be recorded with a standard CCD-camera in order to create reference data. The comparison of the duration of the vapour blanket stage calculated from the ultrasonic and the reference data shows a good agreement with respect to the measurement uncertainty. Therefore, the ultrasonic system is applicable in liquid quenching media.