Analytical estimation of stress intensity factors in patched cracked plates
The fatigue and fracture performance of a cracked plate can be substantially improved by providing patches as reinforcements. The effectiveness of the patches is related to the reduction they cause in the stress intensity factor (SIF) of the crack. So, for reliable design, one needs an accurate eval...
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| Veröffentlicht in: | Engineering fracture mechanics 1985, Vol.21 (3), p.479-494 |
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| container_end_page | 494 |
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| container_issue | 3 |
| container_start_page | 479 |
| container_title | Engineering fracture mechanics |
| container_volume | 21 |
| creator | Chandra, Ramesh Murthy, M.V.V. Ramamurthy, T.S. Rao, A.K. |
| description | The fatigue and fracture performance of a cracked plate can be substantially improved by providing patches as reinforcements. The effectiveness of the patches is related to the reduction they cause in the stress intensity factor (SIF) of the crack. So, for reliable design, one needs an accurate evaluation of the SIF in terms of the crack, patch and adhesive parameters. In this investigation, a centrally cracked large plate with a pair of symmetric bonded narrow patches, oriented normally to the crack line, is analysed by a continuum approach. The narrow patches are treated as transversely flexible line members. The formulation leads to an integral equation which is solved numerically using point collocation. The convergence is rapid. It is found that substantial reductions in SIF are possible with practicable patch dimensions and locations. The patch is more effective when placed on the crack than ahead of the crack. The present analysis indicates that a little distance inwards of the crack tip, not the crack tip itself, is the ideal location, for the patch. |
| doi_str_mv | 10.1016/S0013-7944(85)80041-2 |
| format | Article |
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The effectiveness of the patches is related to the reduction they cause in the stress intensity factor (SIF) of the crack. So, for reliable design, one needs an accurate evaluation of the SIF in terms of the crack, patch and adhesive parameters. In this investigation, a centrally cracked large plate with a pair of symmetric bonded narrow patches, oriented normally to the crack line, is analysed by a continuum approach. The narrow patches are treated as transversely flexible line members. The formulation leads to an integral equation which is solved numerically using point collocation. The convergence is rapid. It is found that substantial reductions in SIF are possible with practicable patch dimensions and locations. The patch is more effective when placed on the crack than ahead of the crack. The present analysis indicates that a little distance inwards of the crack tip, not the crack tip itself, is the ideal location, for the patch.</description><identifier>ISSN: 0013-7944</identifier><identifier>EISSN: 1873-7315</identifier><identifier>DOI: 10.1016/S0013-7944(85)80041-2</identifier><identifier>CODEN: EFMEAH</identifier><language>eng</language><publisher>Tarrytown, NY: Elsevier Ltd</publisher><subject>adhesion ; Applied sciences ; Condensed matter: structure, mechanical and thermal properties ; crack propagation ; Exact sciences and technology ; fatigue ; fracture ; Fracture mechanics (crack, fatigue, damage...) ; Fractures ; Fundamental areas of phenomenology (including applications) ; Mechanical and acoustical properties of condensed matter ; Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology ; mechanical strength ; Metals. Metallurgy ; Physics ; plates ; reliability ; Solid mechanics ; stress ; Structural and continuum mechanics</subject><ispartof>Engineering fracture mechanics, 1985, Vol.21 (3), p.479-494</ispartof><rights>1985 Pergamon Press Ltd.</rights><rights>1986 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c475t-488b4ca51ea44ad6683bada05856dad271fde567e77e1b4c4bc66b227df99a923</citedby><cites>FETCH-LOGICAL-c475t-488b4ca51ea44ad6683bada05856dad271fde567e77e1b4c4bc66b227df99a923</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/S0013-7944(85)80041-2$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,4024,27923,27924,27925,45995</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=8389863$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=8431339$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chandra, Ramesh</creatorcontrib><creatorcontrib>Murthy, M.V.V.</creatorcontrib><creatorcontrib>Ramamurthy, T.S.</creatorcontrib><creatorcontrib>Rao, A.K.</creatorcontrib><title>Analytical estimation of stress intensity factors in patched cracked plates</title><title>Engineering fracture mechanics</title><description>The fatigue and fracture performance of a cracked plate can be substantially improved by providing patches as reinforcements. The effectiveness of the patches is related to the reduction they cause in the stress intensity factor (SIF) of the crack. So, for reliable design, one needs an accurate evaluation of the SIF in terms of the crack, patch and adhesive parameters. In this investigation, a centrally cracked large plate with a pair of symmetric bonded narrow patches, oriented normally to the crack line, is analysed by a continuum approach. The narrow patches are treated as transversely flexible line members. The formulation leads to an integral equation which is solved numerically using point collocation. The convergence is rapid. It is found that substantial reductions in SIF are possible with practicable patch dimensions and locations. The patch is more effective when placed on the crack than ahead of the crack. The present analysis indicates that a little distance inwards of the crack tip, not the crack tip itself, is the ideal location, for the patch.</description><subject>adhesion</subject><subject>Applied sciences</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>crack propagation</subject><subject>Exact sciences and technology</subject><subject>fatigue</subject><subject>fracture</subject><subject>Fracture mechanics (crack, fatigue, damage...)</subject><subject>Fractures</subject><subject>Fundamental areas of phenomenology (including applications)</subject><subject>Mechanical and acoustical properties of condensed matter</subject><subject>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</subject><subject>mechanical strength</subject><subject>Metals. Metallurgy</subject><subject>Physics</subject><subject>plates</subject><subject>reliability</subject><subject>Solid mechanics</subject><subject>stress</subject><subject>Structural and continuum mechanics</subject><issn>0013-7944</issn><issn>1873-7315</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1985</creationdate><recordtype>article</recordtype><recordid>eNqFkMtKBDEQRYMoOD4-QeiF-Fi0Jp1nr0TEFwou1HWoSaox2naPSRTm783MiEtdFVxOVV0OIXuMnjDK1OkjpYzXuhXiyMhjQ6lgdbNGJszoEnMm18nkF9kkWym9Ukq1MnRC7s4H6Oc5OOgrTDm8Qw7jUI1dlXLElKowZBxSyPOqA5fHuEiqGWT3gr5yEdxbmbMeMqYdstFBn3D3Z26T56vLp4ub-v7h-vbi_L52QstcC2OmwoFkCEKAV8rwKXig0kjlwTeadR6l0qg1skKKqVNq2jTad20LbcO3yeHq7iyOH5-ltX0PyWHfw4DjZ7JayHK04W0hD_4kG6Fa2TJRQLkCXRxTitjZWSwu4twyaheS7VKyXRi0RtqlZLuosv_zAFJR2EUYXEi_y0Zwxpc9_sa4aY3iBTtbYVjsfQWMNrmAg0MfIrps_Rj-6fMNvZad2w</recordid><startdate>1985</startdate><enddate>1985</enddate><creator>Chandra, Ramesh</creator><creator>Murthy, M.V.V.</creator><creator>Ramamurthy, T.S.</creator><creator>Rao, A.K.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7TB</scope><scope>8BQ</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>JG9</scope><scope>L7M</scope><scope>7TC</scope></search><sort><creationdate>1985</creationdate><title>Analytical estimation of stress intensity factors in patched cracked plates</title><author>Chandra, Ramesh ; Murthy, M.V.V. ; Ramamurthy, T.S. ; Rao, A.K.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c475t-488b4ca51ea44ad6683bada05856dad271fde567e77e1b4c4bc66b227df99a923</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1985</creationdate><topic>adhesion</topic><topic>Applied sciences</topic><topic>Condensed matter: structure, mechanical and thermal properties</topic><topic>crack propagation</topic><topic>Exact sciences and technology</topic><topic>fatigue</topic><topic>fracture</topic><topic>Fracture mechanics (crack, fatigue, damage...)</topic><topic>Fractures</topic><topic>Fundamental areas of phenomenology (including applications)</topic><topic>Mechanical and acoustical properties of condensed matter</topic><topic>Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology</topic><topic>mechanical strength</topic><topic>Metals. 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The effectiveness of the patches is related to the reduction they cause in the stress intensity factor (SIF) of the crack. So, for reliable design, one needs an accurate evaluation of the SIF in terms of the crack, patch and adhesive parameters. In this investigation, a centrally cracked large plate with a pair of symmetric bonded narrow patches, oriented normally to the crack line, is analysed by a continuum approach. The narrow patches are treated as transversely flexible line members. The formulation leads to an integral equation which is solved numerically using point collocation. The convergence is rapid. It is found that substantial reductions in SIF are possible with practicable patch dimensions and locations. The patch is more effective when placed on the crack than ahead of the crack. The present analysis indicates that a little distance inwards of the crack tip, not the crack tip itself, is the ideal location, for the patch.</abstract><cop>Tarrytown, NY</cop><cop>Oxford</cop><pub>Elsevier Ltd</pub><doi>10.1016/S0013-7944(85)80041-2</doi><tpages>16</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Engineering fracture mechanics, 1985, Vol.21 (3), p.479-494 |
| issn | 0013-7944 1873-7315 |
| language | eng |
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| source | Access via ScienceDirect (Elsevier) |
| subjects | adhesion Applied sciences Condensed matter: structure, mechanical and thermal properties crack propagation Exact sciences and technology fatigue fracture Fracture mechanics (crack, fatigue, damage...) Fractures Fundamental areas of phenomenology (including applications) Mechanical and acoustical properties of condensed matter Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology mechanical strength Metals. Metallurgy Physics plates reliability Solid mechanics stress Structural and continuum mechanics |
| title | Analytical estimation of stress intensity factors in patched cracked plates |
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