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Hossein Ashrafi

Hossein Ashrafi

Assistant Professor

College: Faculty of Mechanical Engineering

Department: Mechanical Engineering - Solid Design

Degree: Ph.D

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Hossein Ashrafi

Assistant Professor Hossein Ashrafi

College: Faculty of Mechanical Engineering - Department: Mechanical Engineering - Solid Design Degree: Ph.D |

  •  Position: Assistant Professor of Solid Mechanics and Applied Design
  •  Institution: Faculty of Mechanical Engineering, University of Kashan, Iran
  •  Researcher ID: P-8090-2014
  •  Scopus Author ID: 12793997500
  •  M.Sc. (Sept. 2005 – August 2008): Graduated from Shiraz University, with Overall GPA 17.67 out of 20.
  •  Ph.D. (Sept. 2010 – August 2014): Graduated from K.N. Toosi University, with Overall GPA 19.43 out of 20.
  • Address: No. 316, 3rd Floor, Faculty of Mech. Eng., University of Kashan, Ghotbravandi Blvd., Kashan, Iran
  • ​P.O. Box:  8731751167
  • Telephone:  (+98) 31 55913439
  • Fax:  (+98) 31 55913444
  • URL:  https://faculty.kashanu.ac.ir/hashrafi/en​

 

نمایش بیشتر

A Nanoindentation Identification of Time-Dependent Relaxation and Creep Moduli for Periodontal Ligaments

AuthorsH Ashrafi - O Bashari
Conference Title6th International congress on nanoscience and nanotechnology
Holding Date of Conference2016-10-26
Event Placeکرج
PresentationSPEECH
Conference LevelInternational Conferences

Abstract

Nanoindentation has recently appeared as a powerful tool for measuring nano-scale mechanical properties of biological tissues. The majority of soft biological tissues such as ligaments and tendons exhibit as viscoelastic bodies or have time-dependent behaviour. In this paper, generalized Voigt-Kelvin and Wiechert models have been used to model the relaxation and creep behaviours of periodontal ligaments, in which relaxation and creep functions are represented by sum of a series of decaying exponential functions of time. The relaxation and creep moduli have been measured separately from two experimental tests.

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