Retardation of fatigue crack growth in high strength steel S690 using a modified stop-hole technique

Seyed Mohammad Javad Razavi; Majid Reza Ayatollahi; Christof Sommitsch; Christian Moser

doi:10.1016/j.engfracmech.2016.11.013

Retardation of fatigue crack growth in high strength steel S690 using a modified stop-hole technique

Seyed Mohammad Javad Razavi, Majid Reza Ayatollahi^*, Christof Sommitsch, Christian Moser

^*Korrespondierende/r Autor/-in für diese Arbeit

Institut für Werkstoffkunde, Fügetechnik und Umformtechnik (3030)

Publikation: Beitrag in einer Fachzeitschrift › Artikel › Begutachtung

Abstract

The purpose of this paper is to study the effects of a new stop-hole technique on the subsequent
delay in fatigue crack propagation. Single edge notch tension specimens of S690
steel alloy are used to perform the fatigue crack initiation/growth tests under cyclic stress
loading. A parametric study is conducted on different geometrical parameters of double
stop-hole. The experimental procedure is simulated using finite element analysis and fatigue
life models. The experiments including fatigue crack initiation/growth measurements
and microscopic examinations beside the numerical results show that the fatigue life
extension caused by the double stop-hole method is significantly more than that of the
conventional single stop-hole method. The lower stress level around the double stophole
plays an important role in increasing the fatigue initiation life from the stop-hole
edge.

Originalsprache	englisch
Seiten (von - bis)	226 - 237
Fachzeitschrift	Engineering Fracture Mechanics
Jahrgang	169
DOIs	https://doi.org/10.1016/j.engfracmech.2016.11.013
Publikationsstatus	Veröffentlicht - 2017

Schlagwörter

Double stop-hole, Notches, Fatigue crack initiation, Fatigue crack growth, Crack growth retardation

ASJC Scopus subject areas

Allgemeine Materialwissenschaften

Zugriff auf Dokument

10.1016/j.engfracmech.2016.11.013

Dieses zitieren

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title = "Retardation of fatigue crack growth in high strength steel S690 using a modified stop-hole technique",

abstract = "The purpose of this paper is to study the effects of a new stop-hole technique on the subsequent delay in fatigue crack propagation. Single edge notch tension specimens of S690 steel alloy are used to perform the fatigue crack initiation/growth tests under cyclic stress loading. A parametric study is conducted on different geometrical parameters of double stop-hole. The experimental procedure is simulated using finite element analysis and fatigue life models. The experiments including fatigue crack initiation/growth measurements and microscopic examinations beside the numerical results show that the fatigue life extension caused by the double stop-hole method is significantly more than that of the conventional single stop-hole method. The lower stress level around the double stop-hole plays an important role in increasing the fatigue initiation life from the stop-hole edge.",

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AU - Ayatollahi, Majid Reza

AU - Sommitsch, Christof

AU - Moser, Christian

PY - 2017

Y1 - 2017

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AB - The purpose of this paper is to study the effects of a new stop-hole technique on the subsequent delay in fatigue crack propagation. Single edge notch tension specimens of S690 steel alloy are used to perform the fatigue crack initiation/growth tests under cyclic stress loading. A parametric study is conducted on different geometrical parameters of double stop-hole. The experimental procedure is simulated using finite element analysis and fatigue life models. The experiments including fatigue crack initiation/growth measurements and microscopic examinations beside the numerical results show that the fatigue life extension caused by the double stop-hole method is significantly more than that of the conventional single stop-hole method. The lower stress level around the double stop-hole plays an important role in increasing the fatigue initiation life from the stop-hole edge.

KW - Double stop-hole, Notches, Fatigue crack initiation, Fatigue crack growth, Crack growth retardation

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DO - 10.1016/j.engfracmech.2016.11.013

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JF - Engineering Fracture Mechanics

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