Prediction of Post Underwater Shock Properties of Polymer - Clay/Silica Hybrid Nanocomposites through Regression Models

Authors: D. Lingaraju, K. Ramji, M. Pramiladevi, U. Rajyalakshmi

Abstract:

Exploding concentrated underwater charges to damage underwater structures such as ship hulls is a part of naval warfare strategies. Adding small amounts of foreign particles (like clay or silica) of nanosize significantly improves the engineering properties of the polymers. In the present work the clay in terms 1, 2 and 3 percent by weight was surface treated with a suitable silane agent. The hybrid nanocomposite was prepared by the hand lay-up technique. Mathematical regression models have been employed for theoretical prediction. This will result in considerable savings in terms of project time, effort and cost.

Keywords: ANOVA, clay, halloysite, nanocomposites, underwater shock, regression, silica.

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1058043

References:

[1] Gang Zhou, Siva Movva, James Lee, "Nanoclay and Long-Fiber-Reinforced Composites Based on Epoxy and Phenolic Resins", J. App. Poly. Sci., 108, pp: 3720-3726, 2008.
[2] Usuki A, Kojima Y, Okada A, Fukushima Y, Kurauchi T, Kamigaito O, "Mechanical properties of nylon 6-clay hybrid" J. Mater. Res., 8, 1185,1993.
[3] Nam P. H, Maiti P, Okamoto M, Kotaka T, Hasegawa N, Usuki A, "Intercalated Polypropylene/ Clay Nanocomposites", Polymer 42, 9633-9640, 2001.
[4] Mouritz A. "The effect of underwater explosion shock loading on the fatigue behaviour of GRP laminates", Composites; 26 (1): 3-9, 1995.
[5] Mouritz A. "The damage to stitched GRP laminates by underwater explosion shock loading", Compos Sci Technol;55(4): 365-74,1995.
[6] Turkmen HS, Mecitolu Z. "Dynamic response of a stiffened laminated composite plate subjected to blast load", J Sound Vibr; 221 (3):371-89, 1999.
[7] Comtois J, Edwards M, Oakes M. "The effect of explosives on polymer matrix composite laminates", Compos Part A: Appl Sci Manufactur; 30(3):181-90, 1999.
[8] Langdon G, Cantwell W, Nurick G. "The blast response of novel thermoplastic-based fibre-metal laminates - some preliminary results and observations", Compos Sci Technol, 65 (6), 861-72, 2005.
[9] Mouritz A. "Ballistic impact and explosive blast resistance of stitched composites" Compos Part B: Eng, 32(2), 431-9, 2001.
[10] Liang C, Tai Y. "Shock responses of a surface ship subjected to noncontact underwater explosions", Ocean Eng, 1-25, 2005.
[11] Mouritz A, Saunders D.S, Buckley S, "The damage and failure of GRP laminates by underwater explosion shock loading", composites, volume 25, number 6, 431-37, 1994.
[12] Trimming M, "Marine applications of composites' in Advances in Composite Materials" edited by G. Piatti, Applied Science Publishers Ltd, London, pp 383-396, 1978
[13] Swisdak M.M, "Explosion effects and properties: Part 2ÔÇöExplosion effects in water' Naval SurJace Centre, Daglen, VA, 1978.
[14] Lyson J.D, 'The underwater explosion response of a GRP mine countermeasures vessel" J Naval Sci, 5, pp182-190, 1979.
[15] Cesoik M, "Residual strength of underwater shock damaged G RP laminates' Report" MRL-VS-9201, Materials Research Laboratory, Australia, 1993.
[16] Ramajeyathilagam K, Vendhan C.P, Bhujanga Rao V, "Non-linear transient dynamic response of rectangular plates under shock loading", International Journal of Impact Engineering, 24, 999, 1015, 2000.
[17] Keil AH, "The response of ships to underwater explosion" David Taylor Model Basin Report No. 1576, 1961.
[18] Kishor S. Trivedi, "Probability and statistics with reliability, queuing and computer science applications", 2nd Edition, John Wiley and Sons