Fatigue strength assessment of HFMI-treated butt welds by the effective notch stress method

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Fatigue strength assessment of HFMI-treated butt welds by the effective notch stress method. / Yildirim, Halid Can.

In: Welding in the World, Vol. 58, No. 3, 2014, p. 279-288.

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@article{379accc29f264ef9b81c6ec9aae1b542,
title = "Fatigue strength assessment of HFMI-treated butt welds by the effective notch stress method",
abstract = "Experimental fatigue data for high-frequency mechanical impact (HFMI)-treated butt welds with low stress concentrations have been collected and analysed using the effective notch stress (ENS) method given by the International Institute of Welding (IIW). The aim of this study is to suggest a more reliable fatigue assessment procedure for HFMI-improved butt welds with low stress concentration factors. In total, 165 published test results for butt welds subject to R = 0.1 and R = 0.5 axial loading are presented. K n, min values for the ENS approach are suggested in order to avoid computational problems due to low stress concentrations at the weld toe. Minimum notch stress concentration values are suggested based on the material yield strength (f y ). All the data is presented with respect to previously proposed and verified material f y correction method. For HFMI-treated butt welds in the ENS system, the use of the K n, min values with the f y correction representing one fatigue class (approximately 12.5 {\%}) increase in strength for every 200-MPa increase in f y has been proposed and verified.",
keywords = "Fatigue improvement, Fatigue strength, High-strength steels, Notch effect, Weld toes",
author = "Yildirim, {Halid Can}",
year = "2014",
doi = "10.1007/s40194-014-0113-3",
language = "English",
volume = "58",
pages = "279--288",
journal = "Welding in the World",
issn = "0043-2288",
number = "3",

}

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TY - JOUR

T1 - Fatigue strength assessment of HFMI-treated butt welds by the effective notch stress method

AU - Yildirim, Halid Can

PY - 2014

Y1 - 2014

N2 - Experimental fatigue data for high-frequency mechanical impact (HFMI)-treated butt welds with low stress concentrations have been collected and analysed using the effective notch stress (ENS) method given by the International Institute of Welding (IIW). The aim of this study is to suggest a more reliable fatigue assessment procedure for HFMI-improved butt welds with low stress concentration factors. In total, 165 published test results for butt welds subject to R = 0.1 and R = 0.5 axial loading are presented. K n, min values for the ENS approach are suggested in order to avoid computational problems due to low stress concentrations at the weld toe. Minimum notch stress concentration values are suggested based on the material yield strength (f y ). All the data is presented with respect to previously proposed and verified material f y correction method. For HFMI-treated butt welds in the ENS system, the use of the K n, min values with the f y correction representing one fatigue class (approximately 12.5 %) increase in strength for every 200-MPa increase in f y has been proposed and verified.

AB - Experimental fatigue data for high-frequency mechanical impact (HFMI)-treated butt welds with low stress concentrations have been collected and analysed using the effective notch stress (ENS) method given by the International Institute of Welding (IIW). The aim of this study is to suggest a more reliable fatigue assessment procedure for HFMI-improved butt welds with low stress concentration factors. In total, 165 published test results for butt welds subject to R = 0.1 and R = 0.5 axial loading are presented. K n, min values for the ENS approach are suggested in order to avoid computational problems due to low stress concentrations at the weld toe. Minimum notch stress concentration values are suggested based on the material yield strength (f y ). All the data is presented with respect to previously proposed and verified material f y correction method. For HFMI-treated butt welds in the ENS system, the use of the K n, min values with the f y correction representing one fatigue class (approximately 12.5 %) increase in strength for every 200-MPa increase in f y has been proposed and verified.

KW - Fatigue improvement

KW - Fatigue strength

KW - High-strength steels

KW - Notch effect

KW - Weld toes

UR - http://www.scopus.com/inward/record.url?scp=84898899583&partnerID=8YFLogxK

U2 - 10.1007/s40194-014-0113-3

DO - 10.1007/s40194-014-0113-3

M3 - Article

VL - 58

SP - 279

EP - 288

JO - Welding in the World

JF - Welding in the World

SN - 0043-2288

IS - 3

ER -

ID: 9835198