Experimental Study of Damage Energy on the Bow of a Vessel with Second-Generation Viscoelastic Layers for the Galápagos Islands

Abstract:

Experimental study of the damage energy is a reproduction of the GFRP vessels’ slamming in the sea. The investigation was carried out to the laboratories by the construction of two types of GFRP panels: viscoelastic and non- viscoelastic modified. Through a bending test, the data collection was developed to get the measurement of the variables in key points. The obtained results showed an expected behavior because the modified specimens were able to spread the force induced from the center to the edges. Besides, the damage energy in the modified panels return in bigger amounts than the unmodified. Flexibility demonstrated a higher rate of increase in the unmodified panels, indicating that the viscoelastic layer contributed to the stiffness increment in the modified panel. In conclusion, viscoelastic materials help to dissipate the energy absorbed by the structure, elongating the lifetime. Also, this study expands the basic knowledge of viscoelastic materials’ behavior in the GFRP planing hull vessels.

• Periodical: Materials Science Forum (Volume 1127)
• Pages: 65-72
• DOI: https://doi.org/10.4028/p-amQJ6Z
• Online since: September 2024
• Authors: Patrick Roger Townsend Valencia*, Jaime J. Zamora-Zamora, Walter Geanpierre Arias Pilco, Juan Carlos Suárez
• Keywords: Bending Test, Damage Energy, GFRP Vessels, Slamming, Viscoelastic Materials

References

[1] Parque Nacional Galápagos et al., "Informe anual ingreso de visitantes a las áreas protegidas de Galápagos del año 2022.," Galápagos - Ecuador, 2022.

[2] B. Hayman, "Response of Sandwich Structures to Slamming and Impact Loads," in Composite Materials in Maritime Structures, Cambridge University Press, 1993, p.161–177.

DOI: 10.1017/CBO9780511751844.010

[3] Y. J. Kim, I. Yoshitake, and R. Liu, "Composite hull structures subjected to wave-induced slamming impact," Jan. 2014.

DOI: 10.1177/0731684413499831

[4] Z. Qin and R. C. Batra, "Local slamming impact of sandwich composite hulls," Int J Solids Struct, vol. 46, no. 10, p.2011–2035, May 2009.

DOI: 10.1016/j.ijsolstr.2008.04.019

[5] G. K. Kapsenberg, "Slamming of ships: where are we now?," Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, vol. 369, no. 1947, p.2892–2919, Jul. 2011.

DOI: 10.1098/rsta.2011.0118

[6] P. R. Townsend Valencia, "Comportamiento a impacto de materiales compuestos sometidos a fenómenos de slamming en embarcaciones de alta velocidad," Universidad Politécnica de Madrid, 2018.

DOI: 10.20868/UPM.thesis.52439

[7] R. S. Kumar and R. Talreja, "A continuum damage model for linear viscoelastic composite materials," Mechanics of Materials, vol. 35, no. 3–6, p.463–480, Mar. 2003.

DOI: 10.1016/S0167-6636(02)00265-X

[8] M. A. Zocher, D. H. Allen, and S. E. Groves, "Stress analysis of a matrix-cracked viscoelastic laminate," Int J Solids Struct, vol. 34, no. 25, p.3235–3257, Sep. 1997.

DOI: 10.1016/S0020-7683(96)00206-5

[9] P. Townsend, J. C. Suárez, and P. P. Cea, "The use of viscoelastic sheets, and their future in the shipbuilding of planing hulls of GFRP," in Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology, Latin American and Caribbean Consortium of Engineering Institutions, 2019.

DOI: 10.18687/LACCEI2019.1.1.9

[10] P. Townsend, J. C. Suárez Bermejo, P. Pinilla, and N. Muñoz, "Is the Viscoelastic Sheet for Slamming Impact Ready to Be Used on Glass Fiber Reinforced Plastic planing Hull?," Applied Sciences, vol. 10, no. 18, p.6557, Sep. 2020.

DOI: 10.3390/app10186557

[11] P. Townsend, J. C. Suárez-Bermejo, and Á. Rodríguez-Ortíz, "A Methodology for Evaluating the Progression of Damage in a Glass Fibre Reinforced Polymer Laminate Subjected to Vertical Weight Drop Impacts," Polymers (Basel), vol. 13, no. 13, p.2131, Jun. 2021.

DOI: 10.3390/polym13132131

[12] P. R. Townsend Valencia, J. C. Suárez Bermejo, P. Pinilla Cea, and E. Sanz Horcajo, "Evaluation of the Damage in Composite Materials Modified with Viscoelastic Layers for the Hull of Boats Subjected to Slamming Impacts," in Proceeding of the VI International Ship Design & Naval Engineering Congress (CIDIN) and XXVI Pan-American Congress of Naval Engineering, Maritime Transportation and Port Engineering (COPINAVAL), Cham: Springer International Publishing, 2020, p.347.

DOI: 10.1007/978-3-030-35963-8_29

[13] P. Townsend, J. C. Suárez-Bermejo, E. Sanz-Horcajo, and P. Pinilla-Cea, "Reduction of slamming damage in the hull of high-speed crafts manufactured from composite materials using viscoelastic layers," Ocean Engineering, vol. 159, p.253–267, Jul. 2018.

DOI: 10.1016/j.oceaneng.2018.04.029

[14] BASF, "Palatal CO P4 Datasheet," Santiago de Chile, 2019.