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Quasi-Static and Dynamic Nanoindentation of Some Selected Biomaterials |
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| Authors: | Jiyu Sun Jilin University Changchun PRChina Mingze Ling Jilin University Changchun PRChina Yueming Wang Jilin University Changchun PRChina Donghui Chen Jilin University Changchun PRChina Shujun Zhang Jin Tong Jilin University Changchun PRChina Shuang Wang |
| Institution: | Jiyu Sun(Key Laboratory of Bionic Engineering(Ministry of Education, China), Jilin University, Changchun, 130025, P.R.China);Mingze Ling(Key Laboratory of Bionic Engineering(Ministry of Education, China), Jilin University, Changchun, 130025, P.R.China);Yueming Wang(Key Laboratory of Bionic Engineering(Ministry of Education, China), Jilin University, Changchun, 130025, P.R.China);Donghui Chen(Key Laboratory of Bionic Engineering(Ministry of Education, China), Jilin University, Changchun, 130025, P.R.China);Shujun Zhang(Department of Multi-Media and Computing, Gloucestershire University, Cheltenham GL50 2HR, UK);Jin Tong(Key Laboratory of Bionic Engineering(Ministry of Education, China), Jilin University, Changchun, 130025, P.R.China);Shuang Wang(Department of Ophthalmology, China Japan Union Hospital, Jilin University, Changchun, 130031, P.R.China); |
| 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 tanδ. 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. |
| Keywords: | biomaterial dynamic nanoindentation viscoelasticity nacre bovine horn beetle elytra |
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