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Title: Air-bubble entrapment due to a drop
Authors: Ootsuka, N.
Etoh, T.G.
Takehara, K.
Oki, S.
Takano, Y.
Hatsuki, Y.
Thoroddsen, S. 
Keywords: Air-entrapment processes
Thermal spraying
Issue Date: 2005
Citation: Ootsuka, N., Etoh, T.G., Takehara, K., Oki, S., Takano, Y., Hatsuki, Y., Thoroddsen, S. (2005). Air-bubble entrapment due to a drop. Proceedings of SPIE - The International Society for Optical Engineering 5580 : 153-162. ScholarBank@NUS Repository.
Abstract: In 2001, an ultra-high-speed video camera of 1,000,000 frames per second was developed in Hydraulics Laboratory of Kinki University. The image sensor of the camera was the ISIS-V2, the In-situ Storage Image Sensor-Version 2. The camera has been applied to visualization of high-speed phenomena in various fields of science and engineering. We observed entrapment phenomena of bubbles resulting from thermal spraying of metals. Thermal spraying is used to improve solid surfaces by spraying melted metal or ceramic particles to the surfaces. One of the problems relating to the thermal spraying is entrapment of air bubbles under the metal or ceramic layers covering the solid surfaces. The bubbles decrease bonding strength of the layers made by the thermal spraying. The entrapment processes were successfully visualized by application of the ultra-high-speed video camera.
Source Title: Proceedings of SPIE - The International Society for Optical Engineering
ISSN: 0277786X
DOI: 10.1117/12.566172
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