The Use Of A Single Spark Source To Investigate The Dynamic Photoelastic Behaviour Of Notched Bars

R. A.W. Mines

doi:10.1117/12.967935

1 February 1985 The Use Of A Single Spark Source To Investigate The Dynamic Photoelastic Behaviour Of Notched Bars

R. A.W. Mines

Proceedings Volume 0491, 16th Intl Congress on High Speed Photography and Photonics; (1985) https://doi.org/10.1117/12.967935
Event: 16th International Congress on High Speed Photography and Photonics, 1984, Strasbourg, France

Abstract

Araidite models of two types of notched bar, namely three point bend and double notched bar, were subjected to an impact from a falling weight pendulum The resultant dynamic photoelastic patterns were captured using a 100 nano second duration spark source, a lens polariscope and a still camera. The spark was fired at different times, to an accuracy of 1 microsecond, for each reproducible impact and hence a sequential series of photographs built up. Dynamic stress intensity factors at the notch tips were measured from the photo-elastic fringes at the given times.

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R. A.W. Mines "The Use Of A Single Spark Source To Investigate The Dynamic Photoelastic Behaviour Of Notched Bars", Proc. SPIE 0491, 16th Intl Congress on High Speed Photography and Photonics, (1 February 1985); https://doi.org/10.1117/12.967935

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