In-Situ Observation of Horizontal Centrifugal Casting using a High-Speed Camera

2012 ◽  
Vol 33 ◽  
pp. 012041 ◽  
Author(s):  
Hisao Esaka ◽  
Kohsuke Kawai ◽  
Hiroshi Kaneko ◽  
Kei Shinozuka
Keyword(s):  
High Speed ◽  
Centrifugal Casting ◽  
In Situ Observation ◽  
High Speed Camera

scholarly journals In-situ Observation on the Explosion Process of Inclusions in Spark OES Analysis Using High Speed Camera

2008 ◽  
Vol 94 (11) ◽  
pp. 532-538 ◽  
Author(s):  
Kazumi Mizukami ◽  
Masaaki Sugiyama ◽  
Masaharu Tsuji
Keyword(s):  
High Speed ◽  
In Situ Observation ◽  
High Speed Camera ◽  
Explosion Process

scholarly journals In-Situ Observation of Horizontal Centrifugal Casting Process using a High-Speed Video Camera

2017 ◽  
Vol 103 (12) ◽  
pp. 763-770
Author(s):  
Hisao Esaka ◽  
Seiichiro Tsubone ◽  
Hiroyuki Miyata ◽  
Daiki Watanabe ◽  
Hiroshi Kaneko ◽  
...  
Keyword(s):  
High Speed ◽  
Centrifugal Casting ◽  
Casting Process ◽  
Video Camera ◽  
In Situ Observation ◽  
High Speed Video ◽  
High Speed Video Camera

scholarly journals In-Situ Observation of Pouring a High-Viscosity Liquid

Technologies ◽  
2020 ◽  
Vol 8 (4) ◽  
pp. 69
Author(s):  
Chisa Miyazawa ◽  
Koichi Sakagami ◽  
Naoki Konno ◽  
Yoshimune Nonomura
Keyword(s):  
Aqueous Solution ◽  
High Speed ◽  
Force Plate ◽  
High Viscosity ◽  
In Situ Observation ◽  
High Speed Camera ◽  
Three Stages ◽  
Liquid Flows

The rheology of liquids affects their ease of pouring. In this study, the subjects evaluated the feeling of pouring liquids with various viscosities. The situation was recorded with a high-speed camera and force plate. The score for ease of pouring water and 5 wt% thickened aqueous solution was 8.9 ± 1.5 and 2.1 ± 1.6 respectively, demonstrating that the score decreased with increasing viscosity. The three stages of the pouring process, namely the flowing state in which the liquid flows out vigorously (I), the yarning state in which the liquid flows out to stretch (II), and the dripping state in which the liquid flows out as droplets (III) were observed. The duration of state II extended as the viscosity increased. These findings can be useful for the development of characteristic containers and beverages.

In Situ Observation Method for Quantitative Evaluation of Solidification Phenomena and Solidification Cracks during Welding

2014 ◽  
Vol 782 ◽  
pp. 3-7
Author(s):  
Kenji Shinozaki ◽  
Motomichi Yamamoto ◽  
Kohta Kadoi ◽  
Peng Wen
Keyword(s):  
High Speed ◽  
Video Camera ◽  
Solidification Cracking ◽  
In Situ Observation ◽  
High Speed Video Camera ◽  
Varestraint Test ◽  
Solidification Cracks ◽  
Observation Method ◽  
Solidification Crack

Solidification cracking during welding is very serious problem for practical use. Therefore, there are so many reports concerning solidification cracking. Normally, solidification cracking susceptibility of material is quantitatively evaluated using Trans-Varestraint test. On the other hand, local solidification cracking strain was tried to measure precisely using in-situ observation method, called MISO method about 30 years ago. Recently, digital high-speed video camera develops very fast and its image quality is very high. Therefore, we have started to observe solidification crack using in site observation method. In this paper, the local critical strain of a solidification crack was measured and the high temperature ductility curves of weld metals having different dilution ratios and different grain sizes to evaluate quantitatively the effects of dilution ratio and grain size on solidification cracking susceptibility by using an improved in situ observation method.

In situ monitoring of electrosprayed water microdroplets using laser and LED light attenuation technique: Comparison with ultra-high-speed camera imaging

2021 ◽  
Vol 129 (18) ◽  
pp. 183305
Author(s):  
Mário Janda ◽  
Mostafa E. Hassan ◽  
Viktor Martišovitš ◽  
Karol Hensel ◽  
Michal Kwiatkowski ◽  
...  
Keyword(s):  
High Speed ◽  
Light Attenuation ◽  
In Situ Monitoring ◽  
High Speed Camera ◽  
Led Light ◽  
Camera Imaging ◽  
Ultra High Speed ◽  
Technique Comparison

scholarly journals In Situ Rubber-Wheel Contact on Road Surface Using Ultraviolet-Induced Fluorescence Method

2020 ◽  
Vol 10 (24) ◽  
pp. 8804
Author(s):  
Jhonni Rahman ◽  
Yutaka Shoukaku ◽  
Tomoaki Iwai
Keyword(s):  
Contact Area ◽  
High Speed ◽  
High Sensitivity ◽  
Dynamic Contact ◽  
Road Surface ◽  
Oxide Semiconductor ◽  
Small Scale ◽  
In Situ Observation ◽  
On The Road

This study examines the relationship between rubber-wheel and the contact area on the road surface. Ultraviolet-induced fluorescence microscopy was used to observe and measure the contact parts with pyranine as a dye solution. The high sensitivity to U.V. light makes it easy to distinguish contact and non-contact regions on a very small scale. The experiment was conducted in static and dynamic conditions to identify its influence on the apparent contact area of rubber-wheel and road surface. The in-situ observation of the contact area was captured and recorded using a high-speed digital camera with 1-inch a CMOS (complementary metal oxide semiconductor) sensor. Additionally, the contact area between rubber-wheel and road surface was measured using an analyzing software. The results show differences in static and dynamic contact conditions based on the operating parameters.

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