Results 231 to 240 of about 9,565 (262)

Schlieren ultrasonic visualization of delaminations in composite materials

Ultrasonics, 1979
Abstract The application of Schlieren ultrasonic techniques to the visualization of delaminations in composite materials is described and discussed. It is shown that this technique can provide an efficient, practical, non-destructive testing method.
Y. Bar-Cohen, B. Ben-Joseph, E. Harnik
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USING SCHLIEREN VISUALIZATION TO TRACK DETONATOR PERFORMANCE

AIP Conference Proceedings, 2008
Several experiments will be presented that are part of a phased plan to understand the evolution of detonation in a detonator from initiation shock through run to detonation, to full detonation, to transition, to booster and booster detonation. High‐speed multiframe schlieren imagery has been used to study several explosive initiation events, such as ...
S. A. Clarke, C. A. Bolme, M. J. Murphy, C. D. Landon, T. A. Mason, R. J. Adrian, A. A. Akinci, M. E. Martinez, K. A. Thomas, Mark Elert, Michael D. Furnish, Ricky Chau, Neil Holmes, Jeffrey Nguyen   +13 more
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Schlieren visualization of a stratified flow around a cylinder

Journal of Visualization, 1999
Description of different modification of schlieren techniques is presented. The methods are based on Maksoutov's scheme of the schlieren mirror instrument with an illuminating slit and a different cutting diaphragm, specifically with Foucault knife, filament or grating.
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A Modern Focusing Schlieren for Flow Visualization

1992
A focusing schlieren system has been developed that does not have the limitations of previous versions, such as low image brightness, small field of view, and difficulty of use. Two-dimensional slices of the flow can be examined at selected depths. Good results are demonstrated, even through poor optical quality windows.
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Schlieren techniques for the visualization of an expansion fan/shock wave interaction

Journal of Visualization, 2014
The interaction between an expansion fan and a shock wave and the resulting flow field are of importance both from a research and an applied perspective. Interesting flow phenomena arise from this interaction which are significant in supersonic engine inlet design and aircraft store carriage and release.
Lara Nel, Beric Skews, Kavendra Naidoo
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A new stroboscope for schlieren and photoelastic visualization of ultrasound

Ultrasonics, 1983
Abstract Conventional stroboscopes, when used for visualizing the path of ultrasound in a transparent medium, suffer from many problems including too long a flash duration, jitter and inconsistency. To overcome these limitations a new stroboscope has been developed which is based on a light emitting diode driven with very short, very high current ...
G P P Gunarathne, J Szilard
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The Schlieren Method Applied to Flow Visualization in a Water Tunnel

Journal of Basic Engineering, 1962
The adaption of the schlieren method for the purpose of observing flow in water is a recent development at the Garfield Thomas Water Tunnel. Flow is shown over an opening and over a semicylinder for a range of Reynolds numbers of 2.5 × 104 to 25 × 104.
Richard E. Bland, Thomas J. Pelick
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A Simple Technique for Visualizing Ultrasound Fields Without Schlieren Optics

Ultrasound in Medicine & Biology, 2015
A simple technique designed for visualization of ultrasound fields without Schlieren optics is introduced. An optical system of direct shadowgraphy with diverging light, which consists of a point light source and a shadow screen, constituted the basic system, but the screen was replaced by focusing optics: a camera that makes a virtual screen at its ...
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Holographic Color Schlieren Method of Flow Visualization

1992
The holographic color schlieren method of visualisation of heterogeneities in transparent media are dealt with in the paper. The essence of the method is expounded, its realization chart and results of experiments on flows round the flying ball are given.
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Schlieren Tomography to Visualize Three-Dimensional Supersonic Flows

2019
This work describes a way to deduce the 3D density gradient field using a set of focusing schlieren images taken close to each other. Focusing schlieren gives density gradient information corresponding to a narrow focal plane. However, it still contains contributions from adjacent planes, and it depends on the focusing optics.
S. Vaisakh, T. M. Muruganandam
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