Fracture mechanics of mollusc shells

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dc.contributor.authorCortie, MBen_AU
dc.contributor.authorMcBean, KEen_AU
dc.contributor.authorElcombe, MMen_AU
dc.date.accessioned2022-12-16T03:47:31Zen_AU
dc.date.available2022-12-16T03:47:31Zen_AU
dc.date.issued2006-11-15en_AU
dc.date.statistics2022-05-20en_AU
dc.descriptionPhysical copy held by ANSTO Library at DDC 539.7213/3. Part Ien_AU
dc.description.abstractThe shape and structure of the shells of molluscs has attracted considerable attention. One aspect of interest is the comparatively high resistance to fracture of these shells. It is known that they are composite structures of aragonite, other calcereous materials, and up to 5% by volume of protein ‘glue’. A large component of their toughening derives from crack tip blunting, deflection and closure, concepts well-known from the field of fracture mechanics. However, the possibility that they might also derive a measure of toughening from a residual stress distribution has been generally overlooked, although Illert first raised this over a decade ago. The optimum situation would be when the inner surface of the shell is maintained in a state of tensile stress, while the outer layers are in the necessarily counter-balancing compressive state. We have examined this hypothesis using a combination of neutron diffraction and scanning electron microscopy and find that it is certainly feasible. However, a definitive proof will require a diffraction study at higher resolution. © 2006 Elsevier B.V.en_AU
dc.identifier.citationCortie, M. B., McBean, K. E., & Elcombe, M. M. (2006). Fracture mechanics of mollusc shells. Paper presented at the Eighth International Conference on Neutron Scattering (ICNS 2005), "Neutrons for structure and dynamics - a new era", Sydney, Australia, 27 November to 2 December 2005. In Campbell, S. J., Cadogan, J. M., Furusaka, M., Hauser, N., & James, M. (Eds), Physica B: Condensed Matter, 385-386(Part 1), 545-547. doi:10.1016/j.physb.2006.05.356en_AU
dc.identifier.conferenceenddate2 December 2005en_AU
dc.identifier.conferencenameEighth International Conference on Neutron Scattering ICNS 2005: 'Neutrons for structure and dynamics - a new eraen_AU
dc.identifier.conferenceplaceSydney, Australiaen_AU
dc.identifier.conferencestartdate27 November 2005en_AU
dc.identifier.editorsCampbell, S. J., Cadogan, J. M., Furusaka, M., Hauser, N., & James, M.en_AU
dc.identifier.issn0921-4526en_AU
dc.identifier.issuePart 1en_AU
dc.identifier.journaltitlePhysica B: Condensed Matteren_AU
dc.identifier.pagination545-547en_AU
dc.identifier.urihttps://doi.org/10.1016/j.physb.2006.05.356en_AU
dc.identifier.urihttps://apo.ansto.gov.au/dspace/handle/10238/14187en_AU
dc.identifier.volume385-386en_AU
dc.language.isoenen_AU
dc.publisherElsevier B. V.en_AU
dc.subjectDiffractionen_AU
dc.subjectElectron microscopyen_AU
dc.subjectInvertebratesen_AU
dc.subjectFracture mechanicsen_AU
dc.subjectMineralsen_AU
dc.subjectScatteringen_AU
dc.subjectResidual stressesen_AU
dc.subjectMolluscsen_AU
dc.titleFracture mechanics of mollusc shellsen_AU
dc.typeConference Paperen_AU
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