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Design and mechanical properties of insect cuticle.
- J. Vincent, U. Wegst
- EngineeringArthropod structure & development
- 1 July 2004
The mechanical design of nacre
- A. P. Jackson, J. Vincent, R. M. Turner
- Materials ScienceProceedings of the Royal Society of London…
- 22 September 1988
Mother-of-pearl (nacre) is a platelet-reinforced composite, highly filled with calcium carbonate (aragonite). The Young modulus, determined from beams of a span-to-depth ratio of no less than 15 (a…
How pine cones open
- C. Dawson, J. Vincent, A-M. Rocca
- Environmental ScienceNature
- 18 December 1997
The scales of seed-bearing pine cones move in response to changes in relative humidity. The scales gape open when it is dry, releasing the cone's seeds. When it is damp, the scales close up. The…
Mechanical Properties of Primary Feathers From the Pigeon
- P. Purslow, J. Vincent
- Biology
- 1 February 1978
The morphology of the primary feather shaft from the pigeon wing has been examined and its salient features noted. The cortex (outer wall) of the shaft appeared to be the most significant feature in…
The quantification of crispness
- J. Vincent
- Engineering
- 1 October 1998
The de-nition of the sensation of "crispnessI (and some related textures) is proposed to be the sudden drop in load experienced on the jaw adductor (closing) muscles and/or the load sensors in the…
Single Kernel Wheat Hardness and Fracture Properties in Relation to Density and the Modelling of Fracture in Wheat Endosperm
- B. Dobraszczyk, M. Whitworth, J. Vincent, A. A. Khan
- Materials Science
- 1 March 2002
Abstract The fracture properties of small, cylindrical samples of endosperm machined from single kernels of several varieties of wheat were measured using three methods: compression, wedge fracture…
Manganese and zinc in the ovipositors and mandibles of hymenopterous insects
- D. Quicke, P. Wyeth, J. Fawke, H. H. Basibuyuk, J. Vincent
- Biology
- 1 December 1998
X-ray microanalysis of the ovipositor and mandibles of various hymenopterous insects has revealed the presence in many species of up to 10% wt/wt of either zinc or manganese in the cuticle. These…
Composite theory and the effect of water on the stiffness of horn keratin
- A. Kitchener, J. Vincent
- Engineering
- 1 April 1987
Abstractα-keratin is a hydrogen-bond dominated composite material. The dry α-keratin (0% regain) of the horns of an oryx has a stiffness of 6.1 GPa. Water interacts only with the amorphous matrix of…
COMPRESSIVE STIFFNESS AND FRACTURE PROPERTIES OF APPLE AND POTATO PARENCHYMA
- Ali Khan, J. Vincent
- Biology
- 1 December 1993
Uni-axial compression tests on geometrical specimens of apple and potato flesh have shown that apple parenchyma is mechanically very anisotropic whereas potato shows no such behaviour.
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