Authors: Campilho, R.D.S.G.¹; de Moura, M.F.S.F.²; Domingues, J.J.M.S.³; Morais, J.J.L.⁴

Source: Journal of Adhesion Science and Technology, Volume 22, Number 13, 2008 , pp. 1565-1591(27)

Publisher: VSP, an imprint of Brill

Abstract:

This work reports on a three-dimensional numerical analysis to assess the residual strength of single and double-strap repaired CFRP composite laminates, under tensile, compressive and bending loads. Interface finite elements including a triangular cohesive mixed-mode damage model are used in order to simulate damage onset and growth. The influences of several geometric changes on damage onset as well as growth and on the repair residual strength are addressed. The geometric changes include chamfering the outer and inner patch faces, filling the drilled hole with adhesive (plug filling), use of fillets of different shapes and dimensions at the outer edge of the overlap, chamfering the outer and inner parent laminate faces and combinations thereof. This work showed that with the correct repair geometry, a significant strength improvement could be achieved for all the loads considered and for both single and double-strap geometries. © Koninklijke Brill NV, Leiden, 2008

Keywords: ADHESIVE JOINTS; STRENGTH; LAMINATES; FINITE ELEMENT ANALYSIS; REPAIR

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856108X309576

Affiliations: 1: Departamento de Engenharia Mecânica e Gestão Industrial, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal 2: Departamento de Engenharia Mecânica e Gestão Industrial, Faculdade de Engenharia da Universidade do Porto, Rua Dr. Roberto Frias s/n, 4200-465 Porto, Portugal;, Email: mfmoura@fe.up.pt 3: Departamento de Engenharia Mecânica, Instituto Superior de Engenharia do Porto, Rua Dr. António Bernardino de Almeida 431, 4200-072 Porto, Portugal 4: CITAB/UTAD, Departamento de Engenharias, Quinta de Prados, 5001-801 Vila Real, Portugal

Publication date: 2008-09-01

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• In this Subject: Chemistry (General) ,  Engineering/Technology ,  Materials & Manufacturing
• By this author: Campilho, R.D.S.G. ;  de Moura, M.F.S.F. ;  Domingues, J.J.M.S. ;  Morais, J.J.L.

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