Characterization of crack propagation in mode I delamination of multidirectional CFRP laminates
During the experimental characterization of the mode I interlaminar fracture toughness of multidirectional composite laminates, the crack tends to migrate from the propagation plane (crack jumping) invalidating the tests. In an earlier numerical study [9], we reported that this problem could be elim...
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| Veröffentlicht in: | Composites science and technology 2012-06, Vol.72 (11), p.1251-1256 |
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| creator | Sebaey, T.A. Blanco, N. Costa, J. Lopes, C.S. |
| description | During the experimental characterization of the mode I interlaminar fracture toughness of multidirectional composite laminates, the crack tends to migrate from the propagation plane (crack jumping) invalidating the tests. In an earlier numerical study [9], we reported that this problem could be eliminated by choosing the appropriate bending stiffness of the beam arms.
In the current paper, six stacking sequences were defined numerically and checked experimentally to validate the methodology presented in the numerical study. The results showed that crack jumping could be avoided by increasing the stiffness of the crack arms. Micrographies of the tested specimens showed that the delamination was not a perfect interlaminar fracture, as is usually considered. Instead, the propagation of delamination occurred with fiber tearing. The toughness values showed a dependency upon both the amount of fiber bridging and the interface angles. |
| doi_str_mv | 10.1016/j.compscitech.2012.04.011 |
| format | Article |
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In the current paper, six stacking sequences were defined numerically and checked experimentally to validate the methodology presented in the numerical study. The results showed that crack jumping could be avoided by increasing the stiffness of the crack arms. Micrographies of the tested specimens showed that the delamination was not a perfect interlaminar fracture, as is usually considered. Instead, the propagation of delamination occurred with fiber tearing. The toughness values showed a dependency upon both the amount of fiber bridging and the interface angles.</description><identifier>ISSN: 0266-3538</identifier><identifier>EISSN: 1879-1050</identifier><identifier>DOI: 10.1016/j.compscitech.2012.04.011</identifier><identifier>CODEN: CSTCEH</identifier><language>eng</language><publisher>Kidlington: Elsevier Ltd</publisher><subject>Applied sciences ; B. Delamination ; B. Fracture toughness ; C. Fiber bridging ; D. Optical microscopy ; Delaminating ; Delamination ; Exact sciences and technology ; Fibers ; Forms of application and semi-finished materials ; Fracture mechanics ; Fracture toughness ; Jumping ; Laminates ; Multidirectional laminates ; Polymer industry, paints, wood ; Stiffness ; Technology of polymers</subject><ispartof>Composites science and technology, 2012-06, Vol.72 (11), p.1251-1256</ispartof><rights>2012 Elsevier Ltd</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c384t-862a26c8a426ea4850461b5b6fa0b463b0c1608c543a14f429f528c79f87204f3</citedby><cites>FETCH-LOGICAL-c384t-862a26c8a426ea4850461b5b6fa0b463b0c1608c543a14f429f528c79f87204f3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.compscitech.2012.04.011$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>315,781,785,3551,27929,27930,46000</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=26037375$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Sebaey, T.A.</creatorcontrib><creatorcontrib>Blanco, N.</creatorcontrib><creatorcontrib>Costa, J.</creatorcontrib><creatorcontrib>Lopes, C.S.</creatorcontrib><title>Characterization of crack propagation in mode I delamination of multidirectional CFRP laminates</title><title>Composites science and technology</title><description>During the experimental characterization of the mode I interlaminar fracture toughness of multidirectional composite laminates, the crack tends to migrate from the propagation plane (crack jumping) invalidating the tests. In an earlier numerical study [9], we reported that this problem could be eliminated by choosing the appropriate bending stiffness of the beam arms.
In the current paper, six stacking sequences were defined numerically and checked experimentally to validate the methodology presented in the numerical study. The results showed that crack jumping could be avoided by increasing the stiffness of the crack arms. Micrographies of the tested specimens showed that the delamination was not a perfect interlaminar fracture, as is usually considered. Instead, the propagation of delamination occurred with fiber tearing. The toughness values showed a dependency upon both the amount of fiber bridging and the interface angles.</description><subject>Applied sciences</subject><subject>B. Delamination</subject><subject>B. Fracture toughness</subject><subject>C. Fiber bridging</subject><subject>D. Optical microscopy</subject><subject>Delaminating</subject><subject>Delamination</subject><subject>Exact sciences and technology</subject><subject>Fibers</subject><subject>Forms of application and semi-finished materials</subject><subject>Fracture mechanics</subject><subject>Fracture toughness</subject><subject>Jumping</subject><subject>Laminates</subject><subject>Multidirectional laminates</subject><subject>Polymer industry, paints, wood</subject><subject>Stiffness</subject><subject>Technology of polymers</subject><issn>0266-3538</issn><issn>1879-1050</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</creationdate><recordtype>article</recordtype><recordid>eNqNkMtKxDAUhoMoOF7eoS4EN60nl6bpUoqXAUERXYczmUQz9jImHUGf3gwdxKWrAz9f_nPyEXJGoaBA5eWqMEO3jsaP1rwVDCgrQBRA6R6ZUVXVOYUS9skMmJQ5L7k6JEcxrgCgKms2I7p5w4BmtMF_4-iHPhtcZlLynq3DsMbXKfR91g1Lm82zpW2x8_0v223a0S99sGabYJs1N0-P2Y6x8YQcOGyjPd3NY_Jyc_3c3OX3D7fz5uo-N1yJMVeSIZNGoWDSolAlCEkX5UI6hIWQfAGGSlCmFBypcILVrmTKVLVTFQPh-DG5mHrT1R8bG0fd-Whs22Jvh03UFLhigirOElpPqAlDjME6vQ6-w_CVIL2Vqlf6j1S9lapB6CQ1vT3frcFosHUBe-PjbwGTwCtelYlrJs6mP396G3Rqs72xkym9HPw_tv0AewCTSQ</recordid><startdate>20120628</startdate><enddate>20120628</enddate><creator>Sebaey, T.A.</creator><creator>Blanco, N.</creator><creator>Costa, J.</creator><creator>Lopes, C.S.</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8FD</scope><scope>JG9</scope></search><sort><creationdate>20120628</creationdate><title>Characterization of crack propagation in mode I delamination of multidirectional CFRP laminates</title><author>Sebaey, T.A. ; Blanco, N. ; Costa, J. ; Lopes, C.S.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c384t-862a26c8a426ea4850461b5b6fa0b463b0c1608c543a14f429f528c79f87204f3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2012</creationdate><topic>Applied sciences</topic><topic>B. Delamination</topic><topic>B. Fracture toughness</topic><topic>C. Fiber bridging</topic><topic>D. Optical microscopy</topic><topic>Delaminating</topic><topic>Delamination</topic><topic>Exact sciences and technology</topic><topic>Fibers</topic><topic>Forms of application and semi-finished materials</topic><topic>Fracture mechanics</topic><topic>Fracture toughness</topic><topic>Jumping</topic><topic>Laminates</topic><topic>Multidirectional laminates</topic><topic>Polymer industry, paints, wood</topic><topic>Stiffness</topic><topic>Technology of polymers</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Sebaey, T.A.</creatorcontrib><creatorcontrib>Blanco, N.</creatorcontrib><creatorcontrib>Costa, J.</creatorcontrib><creatorcontrib>Lopes, C.S.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Composites science and technology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Sebaey, T.A.</au><au>Blanco, N.</au><au>Costa, J.</au><au>Lopes, C.S.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Characterization of crack propagation in mode I delamination of multidirectional CFRP laminates</atitle><jtitle>Composites science and technology</jtitle><date>2012-06-28</date><risdate>2012</risdate><volume>72</volume><issue>11</issue><spage>1251</spage><epage>1256</epage><pages>1251-1256</pages><issn>0266-3538</issn><eissn>1879-1050</eissn><coden>CSTCEH</coden><abstract>During the experimental characterization of the mode I interlaminar fracture toughness of multidirectional composite laminates, the crack tends to migrate from the propagation plane (crack jumping) invalidating the tests. In an earlier numerical study [9], we reported that this problem could be eliminated by choosing the appropriate bending stiffness of the beam arms.
In the current paper, six stacking sequences were defined numerically and checked experimentally to validate the methodology presented in the numerical study. The results showed that crack jumping could be avoided by increasing the stiffness of the crack arms. Micrographies of the tested specimens showed that the delamination was not a perfect interlaminar fracture, as is usually considered. Instead, the propagation of delamination occurred with fiber tearing. The toughness values showed a dependency upon both the amount of fiber bridging and the interface angles.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><doi>10.1016/j.compscitech.2012.04.011</doi><tpages>6</tpages></addata></record> |
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| subjects | Applied sciences B. Delamination B. Fracture toughness C. Fiber bridging D. Optical microscopy Delaminating Delamination Exact sciences and technology Fibers Forms of application and semi-finished materials Fracture mechanics Fracture toughness Jumping Laminates Multidirectional laminates Polymer industry, paints, wood Stiffness Technology of polymers |
| title | Characterization of crack propagation in mode I delamination of multidirectional CFRP laminates |
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