Abstract
In this paper, we report our recent studies of the microstructure and mechanical properties of Dungeness crab exoskeleton. Nanoindentation and scanning probe microscopy (SEM) were carried out on different parts of the crab (claw and body shell), and different parts of the exoskeleton (exocuticle and endocuticle). Clearly defined four-layer structure was observed in the exoskeleton. In the cross sections of the claw and body shell, the mechanical properties show a decreasing trend from the exocuticle to endocuticle. In both cross sections and in-plane sections, a higher property was measured in the claw than the body shell. Finally, super low mechanical properties were obtained for nanoindentation on the in-plane sections of the claw’s endocuticle than the cross-sections. The chitin-protein volume fraction was found to be the major factors affecting the mechanical properties in the different body parts as well as different layers of the exoskeleton.
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References
Currey, J.D., Mechanical-Properties of Mother of Pearl in Tension. Proceedings of the Royal Society of London Series B-Biological Sciences, 1977. 196(1125): p. 443-&.
Jackson, A.P., J.F.V. Vincent, and R.M. Turner, The Mechanical Design of Nacre. Proceedings of the Royal Society of London Series B-Biological Sciences, 1988. 234(1277): p. 415-&.
Wang, R.Z., Suo, Z., Evans, A.G., Yao, N., and Aksay, I.A., Deformation mechanisms in nacre. Journal of Materials Research, 2001. 16(9): p. 2485–2493.
Meyers, M.A., Lin, A.Y.M., Chen, P.Y., and Muyco, J., Mechanical strength of abalone nacre: Role of the soft organic layer. Journal of the Mechanical Behavior of Biomedical Materials, 2008. 1(1): p. 76–85.
Katti, K.S., B. Mohanty, and D.R. Katti, Nanomechanical properties of nacre. Journal of Materials Research, 2006. 21(5): p. 1237–1242.
Hepburn, H.R., Joffe, I., Green, N., and Nelson, K.J., Mechanical-Properties of a Crab Shell. Comparative Biochemistry and Physiology, 1975. 50(Na3): p. 551-&.
Joffe, I., Hepburn, H.R., Nelson, K.J., and Green, N., Mechanical-Properties of a Crustacean Exoskeleton. Comparative Biochemistry and Physiology, 1975. 50(Na3): p. 545-&.
Chen, P.Y., Lin, A.Y.M., Lin, Y.S., Seki, Y., Stokes, A.G., Peyras, J., Olevsky, E.A., Meyers, M.A., and
Taylor, J.R.A., J. Hebrank, and W.M. Kier, Mechanical properties of the rigid and hydrostatic skeletons of molting blue crabs, Callinectes sapidus Rathbun. Journal of Experimental Biology, 2007. 210(24): p. 4272–4278.
Melnick, C.A., Z. Chen, and J.J. Mecholsky, Hardness and toughness of exoskeleton material in the stone crab, Menippe mercenaria. Journal of Materials Research, 1996. 11(11): p. 2903–2907.
Raabe, D., C. Sachs, and P. Romano, The crustacean exoskeleton as an example of a structurally and mechanically graded biological nanocomposite material. Acta Materialia, 2005. 53(15): p. 4281–4292.
Cribb, B.W., Rathmell, A., Charters, R., Rasch, R., Huang, H., and Tibbetts, I.R., Structure, composition and properties of naturally occurring non-calcified crustacean cuticle. Arthropod Structure & Development, 2009. 38(3): p. 173–178.
Roer, R. and R. Dillaman, The Structure and Calcification of the Crustacean Cuticle. Amer. Zool., 1984. 24(4): p. 893–909.
Al-Sawalmih, A., Li, C., Siegel, S., Fabritius, H., Yi, S., Raabe, D., Fratzl, P., and Paris, O., Microtexture and Chitin/Calcite Orientation Relationship in the Mineralized Exoskeleton of the American Lobster. Advanced Functional Materials, 2008. 18: p. 3307–3314.
Sachs, C., H. Fabritius, and D. Raabe, Hardness and elastic properties of dehydrated cuticle from the lobster Homarus americanus obtained by nanoindentation. Journal of Materials Research, 2006. 21(8): p. 1987–1995.
Oliver, W.C. and G.M. Pharr, An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. Journal of Materials Research, 1992. 7(6): p. 1564–1583.
Cheng, L., L. Wang, and A.M. Karlsson, Image analyses of two crustacean exoskeletons and implications of the exoskeletal microstructure on the mechanical behavior. Journal of Materials Research, 2008. 23(11): p. 2854–2872.
Wegst, U.G.K. and M.F. Ashby, The mechanical efficiency of natural materials. Philosophical Magazine, 2004. 84(21): p. 2167–2186.
Vincent, J.F.V., Arthropod cuticle: a natural composite shell system. Composites Part A: Applied Science and Manufacturing 2002. 33(10): p. 1311–1315.
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Lian, J., Wang, J. (2011). Microstructure and Mechanical Properties of Dungeness Crab Exoskeletons. In: Proulx, T. (eds) Mechanics of Biological Systems and Materials, Volume 2. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-0219-0_12
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DOI: https://doi.org/10.1007/978-1-4614-0219-0_12
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