Delamination Buckling in Four-Point Bending Tests–An Experimental Investigation

• Autorzy: Dardano Nicola , Paggi Marco , Bennati Stefano , Valvo Paolo Sebastiano

Identyfikatory

DOI

10.35784/jteme.3092

• Języki publikacji: EN

Abstrakty

EN

A setof carbon-fibre laminated specimens have beensubjected to (static) four-point bending teststo assess the conditions for delaminationinduced by local buckling events of the compressed lamina.Testing conditions prescribed by the ASTM D7264/D7264M-1standard, valid for monolithic samples, have beenfollowed.It is worth noticing that the delaminated area, which is loaded in compression, at a certain point reaches a critical value and snaps upwards. During the experimental campaign, the applied load and the corresponding displacementshave been recorded, as well as the length of the crack and the deformation of the delaminated area by using a Digital Image Correlation (DIC)technique.

Słowa kluczowe

EN

carbon fibre; four-point bending test; buckling; snapping; delamination; digital image correlation

• Wydawca: Polskie Towarzystwo Promocji Wiedzy ; Wydawnictwo Politechniki Lubelskiej
• Czasopismo: Journal of Technology and Exploitation in Mechanical Engineering
• Rocznik: 2022
• Tom: Vol. 8, nr 1
• Strony: 8--14
• Opis fizyczny: Bibliogr. 17 poz., fig., tab.

Twórcy

autor

Dardano Nicola

• IMT School for Advanced Studies Lucca, Piazza S. Francesco, 19,55100 Lucca, LU, Italy

autor

Paggi Marco

• IMT School for Advanced Studies Lucca, Piazza S. Francesco, 19,55100 Lucca, LU, Italy

• https://orcid.org/0000-0001-9409-9782

autor

Bennati Stefano

• University of Pisa, Department of Civil and Industrial Engineering,Largo Lucio Lazzarino, 56122, Pisa, PI, Italy

• https://orcid.org/0000-0003-1929-0792

autor

Valvo Paolo Sebastiano

• University of Pisa, Department of Civil and Industrial Engineering,Largo Lucio Lazzarino, 56122, Pisa, PI, Italy

• https://orcid.org/0000-0001-6439-1926

Bibliografia

• [1]R. M. Jones. Mechanics of composite materials. CRC press, 1999.
• [2]R. Talreja and C. V. Singh. Damage and failure of composite materials. Cambridge University Press, 2012.
• [3]T. Tay. Characterization and analysis of delamination fracture in composites: an overview of developments from 1990 to 2001. Appl. Mech. Rev., 56(1):1–32, 2003.
• [4]K. Senthil, A. Arockiarajan, R. Palaninathan, B. Santhosh, and K. Usha. Defects in composite structures: Its effects and prediction methods–a comprehensive review. Compos. Struct., 106: 139–149, 2013.
• [5]V. V. Bolotin. Delaminations in composite structures: its origin, buckling, growth and stability. Compos. B-Eng., 27 (2):129–145, 1996.
• [6]G. Kardomateas. Snap buckling of delaminated composites under pure bending. Compos. Sci. Technol., 39(1):63–74, 1990.
• [7]M. Kinawy, R. Butler, and G. Hunt. Buckling and propagation of a delaminated composite beam in bending. In 51st AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference 18th AIAA/ASME/AHS Adaptive Structures Conference 12th, page 2771, 2010.
• [8]M. Kinawy, R. Butler, and G. Hunt. Buckling and postbuckling of a delaminated composite beam in bending. AIAA J, 49(3):670–672, 2011.
• [9]M. Kinawy, R. Butler, and G. W. Hunt. Bending strength of delaminated aerospace composites. Phil. Trans. Royal Soc. A: Math., Phys. Eng. Sci., 370(1965): 1780–1797, 2012.
• [10]W. Gong, J. Chen, and E. A. Patterson. An experimental study of the behaviour of delaminations in composite panels subjected to bending. Compos. Struct., 123:9–18, 2015.
• [11]W. Gong, J. Chen, and E. A. Patterson. Buckling and delamination growth behaviour of delaminated composite panels subject to four-point bending. Compos. Struct., 138:122–133, 2016.
• [12]N. Dardano. Delamination of Thin Layers Promoted by Local Buckling. PhD Programme in Institutions, Markets and Technologies -Curriculumin Computer Science and Systems Engineering, IMT School for Advanced Studies Lucca, 2022.
• [13]ASTM D7264/D7264M-15. Standard test method for flexural properties of polymer matrix composite materials, 2015.
• [14]W. Peters and W. Ranson. Digital imaging techniques in experimental stress analysis. Opt. Eng., 21(3):427–431, 1982.
• [15]W. Peters, W. Ranson, M. Sutton, T. Chu, and J. Anderson. Application of digital correlation methods to rigid body mechanics. Opt. Eng., 22(6):738–742, 1983.
• [16]M. A. Sutton, W. Wolters, W. Peters, W. Ranson,and S. McNeill. De-termination of displacements using an improved digital correlation method. Image Vis. Comput., 1(3):133–139, 1983.
• [17]B. Pan. Digital image correlation for surface deformation measurement: historical developments, recent advances and future goals. Meas. Sci. Technol., 29(8):082001, 2018.