A fatigue assessment approach involving small crack growth modelling for structural alloy steels with interior fracture behavior

Ning Gao; Wei Li; Rui Sun; Xin Xin Xing; Ping Wang; Tatsuo Sakai

doi:10.1016/j.engfracmech.2018.10.018

A fatigue assessment approach involving small crack growth modelling for structural alloy steels with interior fracture behavior

Ning Gao, Wei Li^*, Rui Sun, Xin Xin Xing, Ping Wang, Tatsuo Sakai

^*Corresponding author for this work

School of Mechanical Engineering

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

11 Citations (Scopus)

Abstract

A fatigue assessment approach for interior inclusion-FGA (fine granular area)-fisheye induced fracture was proposed through experimental investigation of very high cycle fatigue properties of two high-strength low-alloy steels. The rougher morphology of FGA reveals the rather distorted crack growth path and slow crack growth rate. A strength evaluation model related to defect size and fatigue life was developed, using which the predicted results are in agreement with the experimental results. Based on the modelling of micro-crack growth rate, the evaluated value can be less than the magnitude of one Burger's vector, which reflects the discontinuous crack growth behavior within FGA.

Original language	English
Pages (from-to)	198-210
Number of pages	13
Journal	Engineering Fracture Mechanics
Volume	204
DOIs	https://doi.org/10.1016/j.engfracmech.2018.10.018
Publication status	Published - Dec 2018

Keywords

Fatigue assessment approach
Fine granular area
High-strength low-alloy steel
Interior fracture
Small crack growth

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10.1016/j.engfracmech.2018.10.018

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title = "A fatigue assessment approach involving small crack growth modelling for structural alloy steels with interior fracture behavior",

abstract = "A fatigue assessment approach for interior inclusion-FGA (fine granular area)-fisheye induced fracture was proposed through experimental investigation of very high cycle fatigue properties of two high-strength low-alloy steels. The rougher morphology of FGA reveals the rather distorted crack growth path and slow crack growth rate. A strength evaluation model related to defect size and fatigue life was developed, using which the predicted results are in agreement with the experimental results. Based on the modelling of micro-crack growth rate, the evaluated value can be less than the magnitude of one Burger's vector, which reflects the discontinuous crack growth behavior within FGA.",

keywords = "Fatigue assessment approach, Fine granular area, High-strength low-alloy steel, Interior fracture, Small crack growth",

author = "Ning Gao and Wei Li and Rui Sun and Xing, {Xin Xin} and Ping Wang and Tatsuo Sakai",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = dec,

doi = "10.1016/j.engfracmech.2018.10.018",

language = "English",

volume = "204",

pages = "198--210",

journal = "Engineering Fracture Mechanics",

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T1 - A fatigue assessment approach involving small crack growth modelling for structural alloy steels with interior fracture behavior

AU - Gao, Ning

AU - Li, Wei

AU - Sun, Rui

AU - Xing, Xin Xin

AU - Wang, Ping

AU - Sakai, Tatsuo

PY - 2018/12

Y1 - 2018/12

N2 - A fatigue assessment approach for interior inclusion-FGA (fine granular area)-fisheye induced fracture was proposed through experimental investigation of very high cycle fatigue properties of two high-strength low-alloy steels. The rougher morphology of FGA reveals the rather distorted crack growth path and slow crack growth rate. A strength evaluation model related to defect size and fatigue life was developed, using which the predicted results are in agreement with the experimental results. Based on the modelling of micro-crack growth rate, the evaluated value can be less than the magnitude of one Burger's vector, which reflects the discontinuous crack growth behavior within FGA.

AB - A fatigue assessment approach for interior inclusion-FGA (fine granular area)-fisheye induced fracture was proposed through experimental investigation of very high cycle fatigue properties of two high-strength low-alloy steels. The rougher morphology of FGA reveals the rather distorted crack growth path and slow crack growth rate. A strength evaluation model related to defect size and fatigue life was developed, using which the predicted results are in agreement with the experimental results. Based on the modelling of micro-crack growth rate, the evaluated value can be less than the magnitude of one Burger's vector, which reflects the discontinuous crack growth behavior within FGA.

KW - Fatigue assessment approach

KW - Fine granular area

KW - High-strength low-alloy steel

KW - Interior fracture

KW - Small crack growth

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DO - 10.1016/j.engfracmech.2018.10.018

M3 - Article

AN - SCOPUS:85055415719

SN - 0013-7944

VL - 204

SP - 198

EP - 210

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

A fatigue assessment approach involving small crack growth modelling for structural alloy steels with interior fracture behavior

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Keywords

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