Abstract
Three-point bending tests were conducted at various low temperatures to obtain the crack-tip opening displacement (CTOD) values of three varieties of structural steels with several plate thicknesses. Parameters of the crack growth resistance curve (Rcurve) of each specimen were calibrated by regression of the test data points (CTOD versus crack extension). The temperature and the plate thickness had great effects on the R-curve shape (flat or rising) and the fracture mode (brittle or ductile). In a design process of a steel component, an initial crack is assumed according to its fatigue category. Through the analyses of the crack driving force and the resistance, a practical method is proposed for fracture resistant design and evaluation of flawless or flawed steel components at low temperature.
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Zhou, H., Wang, Y., Shi, Y. et al. Experimental study on fracture resistant design method for steel structural components at low temperature. Int J Steel Struct 15, 319–333 (2015). https://doi.org/10.1007/s13296-015-6005-6
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DOI: https://doi.org/10.1007/s13296-015-6005-6