Investigation of the effect of ultrasonic cavitation in small gaps on surface properties

Publikation: Qualifikations-/StudienabschlussarbeitDissertation

Autorschaft

  • Fushi Bai
Forschungs-netzwerk anzeigen

Details

OriginalspracheDeutsch
QualifikationDoktor der Ingenieurwissenschaften
Gradverleihende Hochschule
Betreut von
  • Jörg Wallaschek, Betreuer*in
Datum der Verleihung des Grades21 Jan. 2019
ErscheinungsortGarbsen
ISBNs (Print)9783959003292
PublikationsstatusVeröffentlicht - 2019

Abstract

Ultrasonic cavitation can be used to improve surface properties of workpieces in industrial applications. During this surface enhancement process, a small gap is required to generate high impact forces on the workpiece surfaces. The distribution of cavitation bubbles, the optimal gap width and the process time highly affect the treated surface properties. In this thesis, the distribution of sound fields in the small gaps and the optimal standoff distance are simulated with the consideration of bubble interactions. Then, sonochemiluminescence and surface volume variation experiments are carried out. Additionally, a piezoelectric force sensor is designed to detect impact forces. Finally, plastic deformation volume is studied to more accurately identify the optimal process time. The simulation and experimental results show good agreements.

Zitieren

Investigation of the effect of ultrasonic cavitation in small gaps on surface properties. / Bai, Fushi.
Garbsen, 2019. 120 S.

Publikation: Qualifikations-/StudienabschlussarbeitDissertation

Bai, F 2019, 'Investigation of the effect of ultrasonic cavitation in small gaps on surface properties', Doktor der Ingenieurwissenschaften, Gottfried Wilhelm Leibniz Universität Hannover, Garbsen. https://doi.org/10.15488/4418
Bai, F. (2019). Investigation of the effect of ultrasonic cavitation in small gaps on surface properties. [Dissertation, Gottfried Wilhelm Leibniz Universität Hannover]. https://doi.org/10.15488/4418
Bai F. Investigation of the effect of ultrasonic cavitation in small gaps on surface properties. Garbsen, 2019. 120 S. (Berichte aus dem IDS). doi: 10.15488/4418
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