Abstract

DDGS high speed camera is an improved version of the multispark system. In this system the time delay and the frame interval can be set arbitrarily from 5 μs to 10 000 μs, and the intervals may be equal or not. The modified spark gaps can provide point flashes that are small enough in size and strong enough in light for both dynamic caustics and dynamic photo-elasticity. In addition, this system can be changed easily to observe the flow by schlieren method. Thus, this optical system is suitable to investigate many dynamic problems in the fields of solid and fluid mechanics.

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