Debonding development in cracked steel plates strengthened by CFRP laminates under fatigue loading: Experimental and boundary element method analysis
Carbon fiber reinforced polymer (CFRP) laminates can effectively enhance the fatigue life of steel structures. However, few studies have investigated the influence of crack-induced debonding in the CFRP-steel interface on the CFRP strengthening efficiency and the relationship of crack propagation an...
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| Veröffentlicht in: | Thin-walled structures 2021-09, Vol.166, p.108038, Article 108038 |
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| creator | Hu, Lili Wang, Yuanyuan Feng, Peng Wang, HaiTao Qiang, Hanlin |
| description | Carbon fiber reinforced polymer (CFRP) laminates can effectively enhance the fatigue life of steel structures. However, few studies have investigated the influence of crack-induced debonding in the CFRP-steel interface on the CFRP strengthening efficiency and the relationship of crack propagation and debonding development. This study experimentally and numerically – with the boundary element method (BEM) – investigated crack propagation and debonding development in CFRP-strengthened cracked steel (Q345, Q460, and Q690) plates. The fatigue test specimens were subjected to a maximum stress of 50% steel yield stress and a stress ratio of 0.1, during which real-time changes in CFRP strain distribution were recorded by digital image correlation (DIC). The CFRP strain gradient calculations showed that crack-induced debonding was crack length-dependent. The numerical fatigue life results were in good agreement with the experimental data when considering debonding and overestimated the experimental data without considering debonding, demonstrating the necessity of considering crack-induced debonding in calculation and design. Furthermore, a relationship was obtained between crack propagation and debonding development.
•Interactional effects between crack propagation and debonding development.•Fatigue tests on CFRP-strengthened cracked steel plates with debonding measurements.•Accurate simulation by the boundary element method considering debonding. |
| doi_str_mv | 10.1016/j.tws.2021.108038 |
| format | Article |
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•Interactional effects between crack propagation and debonding development.•Fatigue tests on CFRP-strengthened cracked steel plates with debonding measurements.•Accurate simulation by the boundary element method considering debonding.</description><subject>Boundary element method</subject><subject>Carbon fiber reinforced polymer</subject><subject>Debonding</subject><subject>Fatigue</subject><subject>Steel</subject><issn>0263-8231</issn><issn>1879-3223</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNp9UEtOwzAQtRBIlMIB2PkCKR4naRJYoUIBCQmEYG059qR1cZ3Kdgs9CPfFbVmjWYxG7zNPj5BLYCNgML5ajOJXGHHGId01y-sjMoC6arKc8_yYDBgf51nNczglZyEsGIMKmmJAfu6w7Z02bkY1btD2qyW6SI2jykv1iZqGiGjpysqIIR0e3SzO0SWk3dLJ9O2VWrk0bg-vnUZPOxnNbI3U9nJnfE3vv1fozc5YWipdUvaJKf2WosX9vyXGea8TJu02mHBOTjppA1787SH5mN6_Tx6z55eHp8ntc6Z4U8UMmC4lL1pdlyArKFolx6By1hZdjWVVNoXkwJoyDdfQJm5ZtGVXygbqrpFtPiRw8FW-D8FjJ1YpZwomgIldr2IhUq9i16s49Jo0NwcNpmAbg14EZdAp1MajikL35h_1LxwlhBE</recordid><startdate>202109</startdate><enddate>202109</enddate><creator>Hu, Lili</creator><creator>Wang, Yuanyuan</creator><creator>Feng, Peng</creator><creator>Wang, HaiTao</creator><creator>Qiang, Hanlin</creator><general>Elsevier Ltd</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0001-7391-7993</orcidid></search><sort><creationdate>202109</creationdate><title>Debonding development in cracked steel plates strengthened by CFRP laminates under fatigue loading: Experimental and boundary element method analysis</title><author>Hu, Lili ; Wang, Yuanyuan ; Feng, Peng ; Wang, HaiTao ; Qiang, Hanlin</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c297t-10d5a24bd851a714bca61c30b4f8e57594a210959592d1b5a254b5f5a918f9ab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><topic>Boundary element method</topic><topic>Carbon fiber reinforced polymer</topic><topic>Debonding</topic><topic>Fatigue</topic><topic>Steel</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Hu, Lili</creatorcontrib><creatorcontrib>Wang, Yuanyuan</creatorcontrib><creatorcontrib>Feng, Peng</creatorcontrib><creatorcontrib>Wang, HaiTao</creatorcontrib><creatorcontrib>Qiang, Hanlin</creatorcontrib><collection>CrossRef</collection><jtitle>Thin-walled structures</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Hu, Lili</au><au>Wang, Yuanyuan</au><au>Feng, Peng</au><au>Wang, HaiTao</au><au>Qiang, Hanlin</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Debonding development in cracked steel plates strengthened by CFRP laminates under fatigue loading: Experimental and boundary element method analysis</atitle><jtitle>Thin-walled structures</jtitle><date>2021-09</date><risdate>2021</risdate><volume>166</volume><spage>108038</spage><pages>108038-</pages><artnum>108038</artnum><issn>0263-8231</issn><eissn>1879-3223</eissn><abstract>Carbon fiber reinforced polymer (CFRP) laminates can effectively enhance the fatigue life of steel structures. However, few studies have investigated the influence of crack-induced debonding in the CFRP-steel interface on the CFRP strengthening efficiency and the relationship of crack propagation and debonding development. This study experimentally and numerically – with the boundary element method (BEM) – investigated crack propagation and debonding development in CFRP-strengthened cracked steel (Q345, Q460, and Q690) plates. The fatigue test specimens were subjected to a maximum stress of 50% steel yield stress and a stress ratio of 0.1, during which real-time changes in CFRP strain distribution were recorded by digital image correlation (DIC). The CFRP strain gradient calculations showed that crack-induced debonding was crack length-dependent. The numerical fatigue life results were in good agreement with the experimental data when considering debonding and overestimated the experimental data without considering debonding, demonstrating the necessity of considering crack-induced debonding in calculation and design. Furthermore, a relationship was obtained between crack propagation and debonding development.
•Interactional effects between crack propagation and debonding development.•Fatigue tests on CFRP-strengthened cracked steel plates with debonding measurements.•Accurate simulation by the boundary element method considering debonding.</abstract><pub>Elsevier Ltd</pub><doi>10.1016/j.tws.2021.108038</doi><orcidid>https://orcid.org/0000-0001-7391-7993</orcidid></addata></record> |
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| ispartof | Thin-walled structures, 2021-09, Vol.166, p.108038, Article 108038 |
| issn | 0263-8231 1879-3223 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Boundary element method Carbon fiber reinforced polymer Debonding Fatigue Steel |
| title | Debonding development in cracked steel plates strengthened by CFRP laminates under fatigue loading: Experimental and boundary element method analysis |
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