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Mechanics control the proliferation of diatoms entrapped in hydrogels.
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Indentation Coefficient and Indentation Behavior of Bamboo
Wood and Fiber Science, 2020Bamboo hardness test standards are not available. The study aimed to develop a new method of testing bamboo indentation hardness. With the V-shaped prismatic head, bamboo rings with different lengths were tested. The V-shaped indentation coefficient (IC) was defined. The results showed that the IC had a good correlation with compression strength. The V-
Zehui Jiang +5 more
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A nano-indentation model for spherical indenters
Modelling and Simulation in Materials Science and Engineering, 2006A model is developed for nano-indentation with spherical indenters. It is based on the Taylor dislocation model and is an extension of Qu et al's (2006 Int. J. Plast. 22 1265?86) micro-indentation model for spherical indenters to nano-indentation. For relatively large indenters (e.g. radii on the order of 100??m), the present model degenerates to Qu et
George M. Pharr +4 more
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Effect of the indenter size on the indentation of aluminum
Materials Characterization, 2006Abstract The indentation behavior of annealed Al was examined using spherical indenters of different radii (0.01, 0.05, 0.1, 0.2 and 0.5 mm). The indentation stress–strain curves displayed similar strain-hardening behavior regardless of the size of indenter, while the altitude increased with the decrease of the size of indenter.
Kenji Okazaki +2 more
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A Critical Evaluation of Indentation Techniques for Measuring Fracture Toughness: I
, 1981The application of indentation techniques to the evaluation of fracture toughness is examined critically, in two parts. In this first part, attention is focused on an approach which involves direct measurement of Vickers-produced radial cracks as a ...
G. Anstis +3 more
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The effect of indenter geometry on the elastic response to indentation [PDF]
Journal of Physics D: Applied Physics, 1994 The paper describes various analytical procedures that account for the influence of the geometry of a rigid indenter upon the measured contact compliance of a smooth perfectly elastic half space. The analytical solutions provide a means of interrelating the reaction force, P, and the displacement, h, characteristics in terms of the contact geometry and
Brian J. Briscoe +2 more
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Composition dependence of indentation deformation and indentation cracking in glass
Acta Materialia, 2013Abstract Crack initiation and deformation behaviors of oxide glasses belonging to different chemical systems were studied using the Vickers indentation test. The crack initiation resistance is chiefly governed by the extents to which densification and isochoric shear flow develop in a process zone beneath and within the contact area.
Sellappan, P. +5 more
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Dislocation nucleation and defect structure during surface indentation
, 1998We model indentation of a metal surface by combining an atomistic metal with a hard-sphere indenter. This work provides atomistic imaging of dislocation nucleation during displacement controlled indentation on a passivated surface.
C. L. Kelchner +2 more
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