Quasi-Static and Dynamic Nanoindentation of Some Selected Biomaterials

Sun, Jiyu and Ling, Mingze and Wang, Yueming and Chen, Donghui and Zhang, Shujun and Tong, Jin and Wang, Shuang (2014) Quasi-Static and Dynamic Nanoindentation of Some Selected Biomaterials. Journal of Bionic Engineering, 11 (1). pp. 144-150. ISSN 16726529

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Abstract

This study details an investigation of the viscoelastic behavior of some biomaterials (nacre, cattle horn and beetle cuticle) at lamellar length scales using quasi-static and dynamic nanoindentation techniques in the materials' Transverse Direction (TD) and Longitudinal Direction (LD). Our results show that nacre exhibits high fracture toughness moving towards a larger campaniform as the stress frequency varies from 10 Hz to 200 Hz. Elytra cuticle exhibits the least fracture toughness presenting little energy dissipation in TD. It was initially speculated that the fracture toughness of the subject materials would be directly related to energy-dissipating mechanisms (mechanical hysteresis), but not the maximum value of the loss tangent tan delta. However, it was found that the materials' elastic modulus and hardness are similar in both the TD and LD when assessed using the quasi-static nanoindentation method, but not dynamic nanoindentation. It is believed that the reported results can be useful in the design of new crack arrest and damping materials based on biological counterparts.

Item Type: Article
Article Type: Article
Uncontrolled Keywords: biomaterial; dynamic nanoindentation; viscoelasticity; nacre; bovine horn; beetle elytra
Subjects: Q Science > QA Mathematics > QA75 Electronic computers. Computer science
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Business, Computing and Applied Sciences > School of Computing and Technology > Technical Computing
Research Priority Areas: Innovation, Design and Technology
Depositing User: Susan Turner
Date Deposited: 07 Dec 2015 13:04
Last Modified: 28 Sep 2016 16:19
URI: http://eprints.glos.ac.uk/id/eprint/2888

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