New high-speed video system for motion analysis

1993 ◽  
Author(s):  
David A. Darg
Keyword(s):  
Motion Analysis ◽  
High Speed ◽  
Video System ◽  
High Speed Video

Cardiac Motion Analysis Using High-Speed Video Images in a Rat Model for Myocardial Infarction

2010 ◽  
Vol 46 (9) ◽  
pp. 547-554
Author(s):  
Idaku ISHII ◽  
Toshikazu OKUDA ◽  
Yuman NIE ◽  
Takeshi TAKAKI ◽  
Kensuke ORITO ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Motion Analysis ◽  
Rat Model ◽  
High Speed ◽  
Cardiac Motion ◽  
High Speed Video ◽  
Video Images

Evaluation of botulinum toxin effects in hemifacial spasm patients: correlation between clinical rating scales and high-speed video system measurements

2020 ◽  
Vol 127 (7) ◽  
pp. 1041-1046
Author(s):  
Tammy H. Osaki ◽  
Midori H. Osaki ◽  
Denny M. Garcia ◽  
Teissy Osaki ◽  
Lilian Ohkawara ◽  
...  
Keyword(s):  
Botulinum Toxin ◽  
Hemifacial Spasm ◽  
High Speed ◽  
Rating Scales ◽  
Video System ◽  
High Speed Video ◽  
Clinical Rating

Design and Fabrication of MEMS-Based Solid Propellant Microthrusters Array

2014 ◽  
Vol 490-491 ◽  
pp. 1042-1046 ◽  
Author(s):  
Cheng Bo Ru ◽  
Ying Hua Ye ◽  
Cheng Ling Wang ◽  
Peng Zhu ◽  
Rui Qi Shen ◽  
...  
Keyword(s):  
Solid Propellant ◽  
High Speed ◽  
Adhesive Bonding ◽  
Power Source ◽  
Test Stand ◽  
Propulsion System ◽  
Constant Voltage ◽  
Initial Test ◽  
Video System ◽  
High Speed Video

A solid propellant microthruster array consists of three parts (five layers) was designed to form propulsion system of nanosatellite. The layers of the array were fabricated by different MEMS technique respectively. Then the array was assembled by adhesive bonding (H70E thermal epoxy). An initial test was operated with the ignition test stand composed of high speed video system, electronic power source, and oscilloscope. A constant voltage was applied to the igniters through two probes contact with the pad of ignition circuitry. The test indicates that the microthruster array can be ignited under 15V.

Solidification Front Velocity of Ternary Titanium-Aluminides

1995 ◽  
Vol 398 ◽  
Author(s):  
M. Wettlaufer ◽  
J. Laakmann
Keyword(s):  
Experimental Data ◽  
Temperature Measurement ◽  
Solidification Front ◽  
High Speed ◽  
Titanium Aluminides ◽  
Front Velocity ◽  
Experimental Results ◽  
Video System ◽  
High Speed Video ◽  
Bulk Undercooling

ABSTRACTTernary titanium-aluminides with compositions of Ti51Al47Fe2, Ti51A147Cr2 and Ti51Al47Mn2 were investigated with respect to the correlation of their solidification front velocity v and bulk undercooling ΔT. The observation of the solidification front during the recalescence event has been realized using a high speed video system capable of recording up to 12,000 pictures per second. The temperature measurement was carried out by pyrometry, avoiding contact with the sample. The comparison of the experimental data with the LKT-theory (Lipton, Kurz, Trivedi; [1]) refers to a primary (hcp) β-Ti solidification for undercoolings below ΔT≈ 130 K and primary (bcc) α-Ti solidification for ΔT≥ 130 K. For undercoolings ≥ 150 K the theory differs greatly from the experimental results.The maximum undercoolings achieved were 268 K (Ti51Al47Fe2), 285 K (Ti51Al47Cr2) and 280 K (Ti51Al47Mn2), corresponding to a solidification front velocity v ≈ 9-10 m/s for all alloys.

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