Low-cycle fatigue crack initiation and propagation from controlled surface imperfections in nuclear steels

Paul Cussac; Catherine Gardin; Véronique Pelosin; Gilbert Hénaff; Laurent de Baglion; Olivier Ancelet; Stéphan Courtin

doi:10.1016/j.ijfatigue.2020.105703

Low-cycle fatigue crack initiation and propagation from controlled surface imperfections in nuclear steels

Paul Cussac
, Catherine Gardin
, Véronique Pelosin
, Gilbert Hénaff
, Laurent de Baglion
, Olivier Ancelet
, Stéphan Courtin

Research output: Contribution to journal › Article › peer-review

Abstract

The impact of a controlled surface imperfection on the low-cycle fatigue life in two different steels is investigated. After introduction of a single imperfection with a depth varying from 50 to 350 µm in cylindrical samples, fatigue tests were conducted under fully-reversed total axial strain control in air at ambient temperature. It is shown that the fatigue life is significantly reduced, even in presence of small imperfections. In addition, the use of the potential drop methods provided an assesment of the initiation life and the determination of crack growth rates. Two characteristic crack growth domains were thus identified.

Original language	English
Article number	105703
Journal	International Journal of Fatigue
Volume	139
DOIs	https://doi.org/10.1016/j.ijfatigue.2020.105703
Publication status	Published - 1 Oct 2020
Externally published	Yes

Keywords

Austenitic stainless steel
Fatigue life
Low-alloy steel
Low-cycle fatigue
Surface imperfection

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10.1016/j.ijfatigue.2020.105703

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title = "Low-cycle fatigue crack initiation and propagation from controlled surface imperfections in nuclear steels",

abstract = "The impact of a controlled surface imperfection on the low-cycle fatigue life in two different steels is investigated. After introduction of a single imperfection with a depth varying from 50 to 350 µm in cylindrical samples, fatigue tests were conducted under fully-reversed total axial strain control in air at ambient temperature. It is shown that the fatigue life is significantly reduced, even in presence of small imperfections. In addition, the use of the potential drop methods provided an assesment of the initiation life and the determination of crack growth rates. Two characteristic crack growth domains were thus identified.",

keywords = "Austenitic stainless steel, Fatigue life, Low-alloy steel, Low-cycle fatigue, Surface imperfection",

author = "Paul Cussac and Catherine Gardin and V{\'e}ronique Pelosin and Gilbert H{\'e}naff and \{de Baglion\}, Laurent and Olivier Ancelet and St{\'e}phan Courtin",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier Ltd",

year = "2020",

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doi = "10.1016/j.ijfatigue.2020.105703",

language = "English",

volume = "139",

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T1 - Low-cycle fatigue crack initiation and propagation from controlled surface imperfections in nuclear steels

AU - Cussac, Paul

AU - Gardin, Catherine

AU - Pelosin, Véronique

AU - Hénaff, Gilbert

AU - de Baglion, Laurent

AU - Ancelet, Olivier

AU - Courtin, Stéphan

PY - 2020/10/1

Y1 - 2020/10/1

N2 - The impact of a controlled surface imperfection on the low-cycle fatigue life in two different steels is investigated. After introduction of a single imperfection with a depth varying from 50 to 350 µm in cylindrical samples, fatigue tests were conducted under fully-reversed total axial strain control in air at ambient temperature. It is shown that the fatigue life is significantly reduced, even in presence of small imperfections. In addition, the use of the potential drop methods provided an assesment of the initiation life and the determination of crack growth rates. Two characteristic crack growth domains were thus identified.

AB - The impact of a controlled surface imperfection on the low-cycle fatigue life in two different steels is investigated. After introduction of a single imperfection with a depth varying from 50 to 350 µm in cylindrical samples, fatigue tests were conducted under fully-reversed total axial strain control in air at ambient temperature. It is shown that the fatigue life is significantly reduced, even in presence of small imperfections. In addition, the use of the potential drop methods provided an assesment of the initiation life and the determination of crack growth rates. Two characteristic crack growth domains were thus identified.

KW - Austenitic stainless steel

KW - Fatigue life

KW - Low-alloy steel

KW - Low-cycle fatigue

KW - Surface imperfection

UR - https://www.scopus.com/pages/publications/85086409130

U2 - 10.1016/j.ijfatigue.2020.105703

DO - 10.1016/j.ijfatigue.2020.105703

M3 - Article

AN - SCOPUS:85086409130

SN - 0142-1123

VL - 139

JO - International Journal of Fatigue

JF - International Journal of Fatigue

M1 - 105703

ER -

Low-cycle fatigue crack initiation and propagation from controlled surface imperfections in nuclear steels

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Keywords

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