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Photoelastic stress of French curves

Photoelastic stress of French curves

C011/6472

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Credit

ALFRED PASIEKA / SCIENCE PHOTO LIBRARY ALFRED PASIEKA / SCIENCE PHOTO LIBRARY

Caption

Photoelastic stress patterns of French curves, viewed using polarised light. The plastic the French curves are made from is displaying coloured interference fringe patterns. Areas of similar colour correspond to regions of similar stress. From these patterns, the direction and magnitude of stresses placed on the French curves can be calculated. During photoelastic studies, these calculations can be related to stresses in real designs by using plastic, scaled-down models. French curves are templates with edges composed of several different curves. These templates are used in drafting to draw smooth curves of nearly any curvature in mechanical drawings.

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Model release not required. Property release not required.

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