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Nanoindentation of Bone
Published in Michelle L. Oyen, Handbook of Nanoindentation with biological applications, 2019
Virginia L. Ferguson, Sara E. Olesiak
Conventional analytical techniques for nanoindentation assume an elastic, isotropic, and homogenous material; yet bone fits none of these criteria. Historically, bone nanoindentation results have been analyzed using the Oliver-Pharr method using a Berkovich tip41 or Hertzian contact mechanics for spherical tips.51,52,72 Further, bone’s complex construction produces time-dependent, or viscoelastic, behavior. While conventional analysis techniques enable a first order approximation of indentation modulus, advanced approaches are needed . to accurately quantify the behavior of bone. This section provides an overview of the advances, and current limitations, in our understanding of bone at the tissue-level that have been enabled by nanoindentation.
Basics of Hierarchical and Functionally Graded Structures and Mechanical Characterization by Nanoindentation: A Paradigm Shift for Nano/Microstructural Length Scale
Published in Arjun Dey, Anoop Kumar Mukhopadhyay, Nanoindentation of Natural Materials, 2018
Arjun Dey, Deeksha Porwal, Nilormi Biswas, Aniruddha Samanta, Manjima Bhattacharya, Mohammed Adnan Hasan, A. K. Gupta, Anoop Kumar Mukhopadhyay
During nanoindentation the high resolution instrument continuously monitors the load, P, and depth of penetration, h, of an indenter, which in the present investigation is a Berkovich tip. These data are utilized to get the load versus depth of penetration (P-h) data plot schematically shown in Figure 1.16.
Evaluating the irradiation hardening of reactor pressure vessel steels by nanoindentation hardness test and micropillar compression test
Published in Journal of Nuclear Science and Technology, 2022
Yuyang Zheng, Diancheng Geng, Hao Yu, Sosuke Kondo, Akihiko Kimura, Hideki Yuya, Ryuta Kasada
Nanoindentation hardness tests were performed using a Nano Indenter G200 (Agilent Technologies) with a diamond Berkovich tip at room temperature (~296 K). In the present study, we used the continuous stiffness measurement (CSM) technique at a strain rate of 0.05 s−1 [18] to evaluate the depth dependence of the HIT and indentation modulus (EIT). The area function of the Berkovich tip was calibrated by a polynomial function obtained using fused silica as a reference material.