Determination of the fatigue limit of an austempered ductile iron using thermal infrared imagry

Alberto L. Geraci; Guido La Rosa; Antonino Risitano; Maurice Grech

doi:10.1117/12.227882

1 December 1995 Determination of the fatigue limit of an austempered ductile iron using thermal infrared imagry

Alberto L. Geraci, Guido La Rosa, Antonino Risitano, Maurice Grech

Proceedings Volume 2646, Digital Photogrammetry and Remote Sensing '95; (1995) https://doi.org/10.1117/12.227882
Event: Digital Photogrammetry and Remote Sensing '95, 1995, St. Petersburg, Russian Federation

Abstract

Previous work by the authors showed that the endurance limit of specimens, or mechanical components, can be predicted using thermal infrared imagery. The new technique enables the determination of the fatigue strength limit in a comparatively short period of time (few thousands cycles), and using very few specimens (theoretically only 1). The present work applies this technique to rotating-bending test specimens of austempered ductile iron, an alloy whose fatigue limit is, due to the high scatter dispersion of the data points and the long testing period required, generally difficult to determine by the traditional technique. This material exhibited higher fatigue strength than the familiar nodular cast iron. This was confirmed by the results derived from the traditional Wohler test and the new technique, and supported by the data gathered from literature.

Citation Download Citation

Alberto L. Geraci, Guido La Rosa, Antonino Risitano, and Maurice Grech "Determination of the fatigue limit of an austempered ductile iron using thermal infrared imagry", Proc. SPIE 2646, Digital Photogrammetry and Remote Sensing '95, (1 December 1995); https://doi.org/10.1117/12.227882

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