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An Improved Wheeler Model for Remaining Life Prediction of Cracked Plate Panels Under Tensile-Compressive Overloading

A. Rama Ch,ra Murthy1, G.S. Palani1, Nagesh R. Iyer1

1 Scientist, Structural Engineering Research Centre, Taramani, Chennai, India 600113

Structural Durability & Health Monitoring 2005, 1(3), 203-214. https://doi.org/10.3970/sdhm.2005.001.203

Abstract

This paper presents an improved Wheeler residual stress model for remaining life prediction of the cracked structural components under variable amplitude loading. The improvement to the Wheeler residual stress model is in two folds. One is expressions for the shaping exponent, which are generally obtained through experiments. Another is calculation of effective plastic zone size to incorporate the sequent effects under tensile-compressive overloading. The remaining life prediction has been carried out by employing the linear elastic fracture mechanics (LEFM) principles. Studies on remaining life prediction of cracked plate panels subjected to tensile-compressive overloading have been carried out for validating the improved Wheeler model. It is observed from the studies that the predicted remaining life using the improved Wheeler model for these cracked plates are found to be in close agreement with the corresponding experimental values reported in the literature.

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Rama, A., Palani, G., Iyer, N. R. (2005). An Improved Wheeler Model for Remaining Life Prediction of Cracked Plate Panels Under Tensile-Compressive Overloading. Structural Durability & Health Monitoring, 1(3), 203–214.



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