Vision Research Articles
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High-Speed Imaging Uncovers The Invisible With Schlieren Techniques
10/2/2017
Although noninvasive schlieren imaging can now deliver detailed images of highly dynamic processes, obtaining high-quality data requires choosing the best high-speed camera for the application and careful optimization of the optical setup.
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Precision Explosives Analysis Using High-Speed Imaging
8/24/2017
High-speed imaging can be used to quantitatively capture explosions, the resulting damage, and to measure other important parameters of the explosion. The data collected can aid in the understanding and characterization of a detonation.
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When Lightning And Rods Connect
8/14/2017
Marcelo Saba is a modern-day Doc Brown–except that instead of capturing lightning to power a DeLorean time machine in Back to the Future, Saba captures lightning with high-speed cameras to not only advance the understanding of how lightning connects with lightning rods, but also provide the field data necessary to improve current lightning protection systems.
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Outcomes Of Mid-Air Collisions Between Drops And Solid Particles
1/19/2017
The study of drop-particle collisions involves examining the outcome of the impact of a particle on to a drop of liquid in mid-air. In applications such as tablet coating in the pharmaceutical industry, or the refining of heavy crude oil in fluid catalytic cracking, the information gleaned from this experiment is vital.
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The Heat Is On: Examining Two-Phase Flow And Heat Transfer With High-Speed Cameras
1/19/2017
We rely on air conditioning and refrigeration to operate through a heat exchanger — a transfer of heat between one or more fluids, essentially increasing heating and cooling efficiency and flow. A group of Pennsylvania State University students is studying two-phase flow and heat transfer phenomena in an effort to advance these processes and their technologies.
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High-Speed Cameras Help Digital Image Correlation Show Its Strength
12/12/2016
Digital image correlation (DIC) is an optical measurement technique that allows full-field analysis of a material’s or structure’s deformation, displacement, and strain. This paper discusses how high-speed cameras and various software packages are helping DIC expand into new applications.
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Mach Diamonds: Winner Of “Excellent Slow Motion” Award
12/8/2016
Mach disks, or “shock diamonds,” are the result of standing shockwaves caused by abrupt pressure changes, usually only seen in the under expanded flow of gas from a jet engine. As the winner of the “Excellent Slow Motion Award” at ICHSIP 31 in Osaka, Japan, this video sequence shows the liftoff of a pressurized PET drink bottle from a toy rocket captured with a Phantom Camera at 50,000 fps, and slowed for viewing by factor of 2,000.
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High-Speed Cameras Make Sound Visible And Improve Noise Absorbers
11/22/2016
It is extremely important for the airline industry and its research groups to support and develop noise reduction strategies. In this case study high-speed cameras are used to make sound "visible" to researchers while they investigate new strategies for noise reduction on jet engines.
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Explosives Engineering: High Speed Imagery For Research And Experimentation
11/22/2016
Vision Research is in collaboration with the Colorado School of Mines in order to develop a university-level short course on the use and benefits of high-speed imaging, while experimenting with explosives and ballistic applications.
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Vocal Folds: High-Speed Digital Cameras Facilitate Revolutionary Research In Diagnosing Voice Disorders
11/22/2016
Voice disorders are unfortunately not as uncommon as most people would think. Around 7.5 million Americans have trouble using their voice every day, and not enough is known about this subject to understand how to prevent these disorders. Dr. Deliyski, a researcher at the University of South Carolina’s Arnold School of Public Health, is committed to advancing the scientific understanding of the human voice, and plans to develop a new methodology to help diagnose voice disorders. With the help of Vision Research, this study explores the movements of human vocal folds through laryngeal high-speed video-endoscopy (HSV).