Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch
Corroded surfaces of offshore mooring chains typically show a very irregular shape with different pit geometries. Fatigue tests were performed in three‐point bending on specimens with hemispherical notches, representing an idealized geometry of a corrosion pit. Digital image correlation was used to...
Gespeichert in:
| Veröffentlicht in: | Fatigue & fracture of engineering materials & structures 2022-12, Vol.45 (12), p.3592-3608 |
|---|---|
| Hauptverfasser: | , , , , |
| Format: | Artikel |
| Sprache: | eng |
| Schlagworte: | |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 3608 |
|---|---|
| container_issue | 12 |
| container_start_page | 3592 |
| container_title | Fatigue & fracture of engineering materials & structures |
| container_volume | 45 |
| creator | Qvale, Paul Zarandi, Ershad P. Arredondo, Alberto Ås, Sigmund K. Skallerud, Bjørn H. |
| description | Corroded surfaces of offshore mooring chains typically show a very irregular shape with different pit geometries. Fatigue tests were performed in three‐point bending on specimens with hemispherical notches, representing an idealized geometry of a corrosion pit. Digital image correlation was used to detect crack initiation lives and locations. The aim of the study was to quantify mean stress relaxation (MSR) and its influence on fatigue initiation life. MSR data were obtained from strain‐controlled fatigue tests on R4‐grade offshore mooring chain steel. Interestingly, MSR was observed even at a stress amplitude below the cyclic yield stress. For initiation lives below 100,000 cycles, significant improvement in predictions was obtained if cyclic softening and MSR were accounted for. Using only the monotonic stress‐strain curve led to less accurate predictions. For longer lives, scatter in the base material
S‐N data and residual stresses from machining of the notch made predictions less accurate. |
| doi_str_mv | 10.1111/ffe.13834 |
| format | Article |
| fullrecord | <record><control><sourceid>proquest_cross</sourceid><recordid>TN_cdi_proquest_journals_2732875661</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>2732875661</sourcerecordid><originalsourceid>FETCH-LOGICAL-c3324-ac864a3593de88562884c4e9b2a450935ded87673ef2f4f9fb5fb9eef2f10ff43</originalsourceid><addsrcrecordid>eNp1kE1LAzEQhoMoWKsH_0HAk4dtN5uPzR6ltCoUvCh4C2l20qZuszVJ0f57U9erw8DMMM87Ay9Ct6SckBxTa2FCqKTsDI0IE2VRiYafo5GsuShqLt8v0VWM27IkglE6Qtt5VpiEe4vN0XTO4NjbBN75Nda-xTvQHscUIEYcoNPfOrne45w2d-sDYBO0-cDOu-SGnfNY4w3sXNxvIDijO-z7ZDbX6MLqLsLNXx2jt8X8dfZULF8en2cPy8JQWrFCGymYpryhLUjJRSUlMwyaVaUZLxvKW2hlLWoKtrLMNnbF7aqB00RKaxkdo7vh7j70nweISW37Q_D5papqWp2cECRT9wNlQh9jAKv2we10OCpSqpOVKhujfq3M7HRgv1wHx_9BtVjMB8UPV9J2nw</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype><pqid>2732875661</pqid></control><display><type>article</type><title>Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch</title><source>Access via Wiley Online Library</source><creator>Qvale, Paul ; Zarandi, Ershad P. ; Arredondo, Alberto ; Ås, Sigmund K. ; Skallerud, Bjørn H.</creator><creatorcontrib>Qvale, Paul ; Zarandi, Ershad P. ; Arredondo, Alberto ; Ås, Sigmund K. ; Skallerud, Bjørn H.</creatorcontrib><description>Corroded surfaces of offshore mooring chains typically show a very irregular shape with different pit geometries. Fatigue tests were performed in three‐point bending on specimens with hemispherical notches, representing an idealized geometry of a corrosion pit. Digital image correlation was used to detect crack initiation lives and locations. The aim of the study was to quantify mean stress relaxation (MSR) and its influence on fatigue initiation life. MSR data were obtained from strain‐controlled fatigue tests on R4‐grade offshore mooring chain steel. Interestingly, MSR was observed even at a stress amplitude below the cyclic yield stress. For initiation lives below 100,000 cycles, significant improvement in predictions was obtained if cyclic softening and MSR were accounted for. Using only the monotonic stress‐strain curve led to less accurate predictions. For longer lives, scatter in the base material
S‐N data and residual stresses from machining of the notch made predictions less accurate.</description><identifier>ISSN: 8756-758X</identifier><identifier>EISSN: 1460-2695</identifier><identifier>DOI: 10.1111/ffe.13834</identifier><language>eng</language><publisher>Oxford: Wiley Subscription Services, Inc</publisher><subject>Bending fatigue ; Chains ; Crack initiation ; Crack propagation ; cyclic softening ; digital image correlation ; Digital imaging ; Docking and mooring gear ; fatigue crack initiation ; Fatigue failure ; Fatigue tests ; finite element ; Fracture mechanics ; Machining ; mean stress relaxation ; Notches ; offshore engineering ; Residual stress ; Softening ; Strain ; Stress relaxation ; Yield stress</subject><ispartof>Fatigue & fracture of engineering materials & structures, 2022-12, Vol.45 (12), p.3592-3608</ispartof><rights>2022 The Authors. published by John Wiley & Sons Ltd.</rights><rights>2022. This article is published under http://creativecommons.org/licenses/by/4.0/ (the “License”). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c3324-ac864a3593de88562884c4e9b2a450935ded87673ef2f4f9fb5fb9eef2f10ff43</citedby><cites>FETCH-LOGICAL-c3324-ac864a3593de88562884c4e9b2a450935ded87673ef2f4f9fb5fb9eef2f10ff43</cites><orcidid>0000-0003-2690-0851 ; 0000-0002-7007-2865</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1111%2Fffe.13834$$EPDF$$P50$$Gwiley$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1111%2Fffe.13834$$EHTML$$P50$$Gwiley$$Hfree_for_read</linktohtml><link.rule.ids>315,782,786,1419,27931,27932,45581,45582</link.rule.ids></links><search><creatorcontrib>Qvale, Paul</creatorcontrib><creatorcontrib>Zarandi, Ershad P.</creatorcontrib><creatorcontrib>Arredondo, Alberto</creatorcontrib><creatorcontrib>Ås, Sigmund K.</creatorcontrib><creatorcontrib>Skallerud, Bjørn H.</creatorcontrib><title>Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch</title><title>Fatigue & fracture of engineering materials & structures</title><description>Corroded surfaces of offshore mooring chains typically show a very irregular shape with different pit geometries. Fatigue tests were performed in three‐point bending on specimens with hemispherical notches, representing an idealized geometry of a corrosion pit. Digital image correlation was used to detect crack initiation lives and locations. The aim of the study was to quantify mean stress relaxation (MSR) and its influence on fatigue initiation life. MSR data were obtained from strain‐controlled fatigue tests on R4‐grade offshore mooring chain steel. Interestingly, MSR was observed even at a stress amplitude below the cyclic yield stress. For initiation lives below 100,000 cycles, significant improvement in predictions was obtained if cyclic softening and MSR were accounted for. Using only the monotonic stress‐strain curve led to less accurate predictions. For longer lives, scatter in the base material
S‐N data and residual stresses from machining of the notch made predictions less accurate.</description><subject>Bending fatigue</subject><subject>Chains</subject><subject>Crack initiation</subject><subject>Crack propagation</subject><subject>cyclic softening</subject><subject>digital image correlation</subject><subject>Digital imaging</subject><subject>Docking and mooring gear</subject><subject>fatigue crack initiation</subject><subject>Fatigue failure</subject><subject>Fatigue tests</subject><subject>finite element</subject><subject>Fracture mechanics</subject><subject>Machining</subject><subject>mean stress relaxation</subject><subject>Notches</subject><subject>offshore engineering</subject><subject>Residual stress</subject><subject>Softening</subject><subject>Strain</subject><subject>Stress relaxation</subject><subject>Yield stress</subject><issn>8756-758X</issn><issn>1460-2695</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><sourceid>24P</sourceid><sourceid>WIN</sourceid><recordid>eNp1kE1LAzEQhoMoWKsH_0HAk4dtN5uPzR6ltCoUvCh4C2l20qZuszVJ0f57U9erw8DMMM87Ay9Ct6SckBxTa2FCqKTsDI0IE2VRiYafo5GsuShqLt8v0VWM27IkglE6Qtt5VpiEe4vN0XTO4NjbBN75Nda-xTvQHscUIEYcoNPfOrne45w2d-sDYBO0-cDOu-SGnfNY4w3sXNxvIDijO-z7ZDbX6MLqLsLNXx2jt8X8dfZULF8en2cPy8JQWrFCGymYpryhLUjJRSUlMwyaVaUZLxvKW2hlLWoKtrLMNnbF7aqB00RKaxkdo7vh7j70nweISW37Q_D5papqWp2cECRT9wNlQh9jAKv2we10OCpSqpOVKhujfq3M7HRgv1wHx_9BtVjMB8UPV9J2nw</recordid><startdate>202212</startdate><enddate>202212</enddate><creator>Qvale, Paul</creator><creator>Zarandi, Ershad P.</creator><creator>Arredondo, Alberto</creator><creator>Ås, Sigmund K.</creator><creator>Skallerud, Bjørn H.</creator><general>Wiley Subscription Services, Inc</general><scope>24P</scope><scope>WIN</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>JG9</scope><scope>KR7</scope><orcidid>https://orcid.org/0000-0003-2690-0851</orcidid><orcidid>https://orcid.org/0000-0002-7007-2865</orcidid></search><sort><creationdate>202212</creationdate><title>Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch</title><author>Qvale, Paul ; Zarandi, Ershad P. ; Arredondo, Alberto ; Ås, Sigmund K. ; Skallerud, Bjørn H.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c3324-ac864a3593de88562884c4e9b2a450935ded87673ef2f4f9fb5fb9eef2f10ff43</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2022</creationdate><topic>Bending fatigue</topic><topic>Chains</topic><topic>Crack initiation</topic><topic>Crack propagation</topic><topic>cyclic softening</topic><topic>digital image correlation</topic><topic>Digital imaging</topic><topic>Docking and mooring gear</topic><topic>fatigue crack initiation</topic><topic>Fatigue failure</topic><topic>Fatigue tests</topic><topic>finite element</topic><topic>Fracture mechanics</topic><topic>Machining</topic><topic>mean stress relaxation</topic><topic>Notches</topic><topic>offshore engineering</topic><topic>Residual stress</topic><topic>Softening</topic><topic>Strain</topic><topic>Stress relaxation</topic><topic>Yield stress</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Qvale, Paul</creatorcontrib><creatorcontrib>Zarandi, Ershad P.</creatorcontrib><creatorcontrib>Arredondo, Alberto</creatorcontrib><creatorcontrib>Ås, Sigmund K.</creatorcontrib><creatorcontrib>Skallerud, Bjørn H.</creatorcontrib><collection>Wiley Online Library (Open Access Collection)</collection><collection>Wiley Online Library (Open Access Collection)</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Mechanical & Transportation Engineering Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Materials Research Database</collection><collection>Civil Engineering Abstracts</collection><jtitle>Fatigue & fracture of engineering materials & structures</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Qvale, Paul</au><au>Zarandi, Ershad P.</au><au>Arredondo, Alberto</au><au>Ås, Sigmund K.</au><au>Skallerud, Bjørn H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch</atitle><jtitle>Fatigue & fracture of engineering materials & structures</jtitle><date>2022-12</date><risdate>2022</risdate><volume>45</volume><issue>12</issue><spage>3592</spage><epage>3608</epage><pages>3592-3608</pages><issn>8756-758X</issn><eissn>1460-2695</eissn><abstract>Corroded surfaces of offshore mooring chains typically show a very irregular shape with different pit geometries. Fatigue tests were performed in three‐point bending on specimens with hemispherical notches, representing an idealized geometry of a corrosion pit. Digital image correlation was used to detect crack initiation lives and locations. The aim of the study was to quantify mean stress relaxation (MSR) and its influence on fatigue initiation life. MSR data were obtained from strain‐controlled fatigue tests on R4‐grade offshore mooring chain steel. Interestingly, MSR was observed even at a stress amplitude below the cyclic yield stress. For initiation lives below 100,000 cycles, significant improvement in predictions was obtained if cyclic softening and MSR were accounted for. Using only the monotonic stress‐strain curve led to less accurate predictions. For longer lives, scatter in the base material
S‐N data and residual stresses from machining of the notch made predictions less accurate.</abstract><cop>Oxford</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1111/ffe.13834</doi><tpages>17</tpages><orcidid>https://orcid.org/0000-0003-2690-0851</orcidid><orcidid>https://orcid.org/0000-0002-7007-2865</orcidid><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 8756-758X |
| ispartof | Fatigue & fracture of engineering materials & structures, 2022-12, Vol.45 (12), p.3592-3608 |
| issn | 8756-758X 1460-2695 |
| language | eng |
| recordid | cdi_proquest_journals_2732875661 |
| source | Access via Wiley Online Library |
| subjects | Bending fatigue Chains Crack initiation Crack propagation cyclic softening digital image correlation Digital imaging Docking and mooring gear fatigue crack initiation Fatigue failure Fatigue tests finite element Fracture mechanics Machining mean stress relaxation Notches offshore engineering Residual stress Softening Strain Stress relaxation Yield stress |
| title | Effect of cyclic softening and mean stress relaxation on fatigue crack initiation in a hemispherical notch |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2024-12-06T12%3A13%3A36IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-proquest_cross&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=Effect%20of%20cyclic%20softening%20and%20mean%20stress%20relaxation%20on%20fatigue%20crack%20initiation%20in%20a%20hemispherical%20notch&rft.jtitle=Fatigue%20&%20fracture%20of%20engineering%20materials%20&%20structures&rft.au=Qvale,%20Paul&rft.date=2022-12&rft.volume=45&rft.issue=12&rft.spage=3592&rft.epage=3608&rft.pages=3592-3608&rft.issn=8756-758X&rft.eissn=1460-2695&rft_id=info:doi/10.1111/ffe.13834&rft_dat=%3Cproquest_cross%3E2732875661%3C/proquest_cross%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_pqid=2732875661&rft_id=info:pmid/&rfr_iscdi=true |