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An experimental and numerical study of repairs on composite substrates with composite and aluminum doublers using riveted, bonded, and hybrid joints
dc.contributor.author | Pitta, Siddharth |
dc.contributor.author | Roure Fernández, Francisco |
dc.contributor.author | Crespo Artiaga, Daniel |
dc.contributor.author | Rojas Gregorio, José Ignacio |
dc.contributor.other | Universitat Politècnica de Catalunya. Doctorat en Ciència i Tecnologia Aeroespacials |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament de Física |
dc.date.accessioned | 2019-09-26T11:21:34Z |
dc.date.available | 2019-09-26T11:21:34Z |
dc.date.issued | 2019-09-14 |
dc.identifier.citation | Pitta, S. [et al.]. An experimental and numerical study of repairs on composite substrates with composite and aluminum doublers using riveted, bonded, and hybrid joints. "Materials", 14 Setembre 2019, vol. 12. pp. 2978:17-2978:19 |
dc.identifier.issn | 1996-1944 |
dc.identifier.uri | http://hdl.handle.net/2117/168752 |
dc.description.abstract | In this work, experimental and numerical analyses of repairs on carbon fiber reinforced epoxy (CFRE) substrates, with CFRE and aluminum alloy doublers typical of aircraft structures, are presented. The substrates have a bridge gap of 12.7 mm (simulated crack), repaired with twin doublers joined with riveted, adhesive bonded, and hybrid joints. The performance of the repairs using different doubler materials and joining techniques are compared under static loading. The experimental results show that riveted joints have the lowest strength, while adhesive bonded joints have the highest strength, irrespective of the doubler material. Finite element analysis (FEA) of the studied joints is also performed using commercial FEA tool Abaqus. In the FEA model, point-based fasteners are used for the rivets, and a cohesive zone contact model is used to simulate the adhesive bond. The FEA results indicate that the riveted joints have higher tensile stresses on the metal doublers compared to the composite doublers. As per the failure modes, interestingly, for hybrid joints using composite doublers, the doublers fail due to net-section failure, while, for hybrid joints using metal doublers, it is the composite substrate that fails due to net-section failure. This suggests vulnerability of the composite structures to mechanical fastener holes. Lastly, the Autodesk Helius composite tool is used for prediction of first-ply failure and ply load distribution, and for progressive failure analysis of the composite substrate. |
dc.language.iso | eng |
dc.publisher | Multidisciplinary Digital Publishing Institute (MDPI) |
dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria dels materials |
dc.subject.lcsh | Aluminum alloys |
dc.subject.lcsh | Aluminum alloys -- Bonding |
dc.subject.other | Carbon fiber reinforced epoxy composite |
dc.subject.other | Substrate |
dc.subject.other | Rivets |
dc.subject.other | Adhesive bond |
dc.subject.other | Hybrid |
dc.subject.other | Aluminum alloy |
dc.subject.other | Strength |
dc.title | An experimental and numerical study of repairs on composite substrates with composite and aluminum doublers using riveted, bonded, and hybrid joints |
dc.type | Article |
dc.subject.lemac | Alumini -- Aliatges |
dc.contributor.group | Universitat Politècnica de Catalunya. GCM - Grup de Caracterització de Materials |
dc.contributor.group | Universitat Politècnica de Catalunya. REMM - Recerca en Estructures i Mecànica de Materials |
dc.identifier.doi | 10.3390/ma12182978 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | https://www.mdpi.com/1996-1944/12/18/2978 |
dc.rights.access | Open Access |
local.identifier.drac | 25832398 |
dc.description.version | Postprint (published version) |
local.citation.author | Pitta, S.; Roure, F.; Crespo, D.; Rojas, J.I. |
local.citation.publicationName | Materials |
local.citation.volume | 12 |
local.citation.startingPage | 1 |
local.citation.startingPage | 2978:17 |
local.citation.endingPage | 19 |
local.citation.endingPage | 2978:19 |
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