Title:
VISCOSITY COEFFICIENT CALCULATION DEVICE, INDENTATION TEST DEVICE, TENSILE TESTING DEVICE, VISCOSITY COEFFICIENT CALCULATION METHOD, AND PROGRAM
Document Type and Number:
WIPO Patent Application WO/2015/059878
Kind Code:
A1
Abstract:
The present invention simply and accurately identifies the value of a viscosity coefficient for viscoelasticity. A viscosity coefficient calculation device is provided with: a resistivity acquisition unit for acquiring, for each of a plurality of times until a specific strain occurs when a load is applied to a sample, a deformation resistivity value corresponding to an apparent modulus of elasticity when it is assumed that Hooke's law is being followed; and an output unit for using a relational expression, which is analytically obtained through the substitution of deformation resistivity values in a first order differential equation for stress and strain obtained from a constitutive equation of a viscoelastic model, is a fractional function of time, and relates deformation resistivity and a viscosity coefficient, to output the viscosity coefficient of a sample on the basis of the deformation resistivity values acquired by the resistivity acquisition unit for each of the plurality of times.
Inventors:
SAKUMA ATSUSHI (JP)
SANGO YUMA (JP)
SANGO YUMA (JP)
Application Number:
PCT/JP2014/005055
Publication Date:
April 30, 2015
Filing Date:
October 03, 2014
Export Citation:
Assignee:
UNIV TOKYO NAT UNIV CORP (JP)
International Classes:
G01N3/40; G01N3/00; G01N3/08; G01N19/00
Foreign References:
| JP2011137667A | 2011-07-14 |
Other References:
MITSUHIRO TANI ET AL.: "Parameters Evaluation of Three-Element Solid Model for Viscoelastic Materials by Indentation Test", JOURNAL OF THE SOCIETY OF MATERIALS SCIENCE, vol. 60, no. 3, 22 March 2011 (2011-03-22), JAPAN, pages 224 - 228
YUMA YAMAGO ET AL.: "Nendanseitai no Henkei Tokusei ni Kansuru Busseichi Dotei eno Oshikomi Shikenho no Tekiyo", PROCEEDINGS OF THE JSME CONFERENCE ON FRONTIERS IN BIOENGINEERING, vol. 24 TH, 31 October 2013 (2013-10-31), pages 31 - 32
YUMA YAMAGO ET AL.: "Nendanseitai no Henkei Tokusei ni Kansuru Busseichi Dotei eno Oshikomi Shikenho no Tekiyo", PROCEEDINGS OF THE JSME CONFERENCE ON FRONTIERS IN BIOENGINEERING, vol. 24 TH, 31 October 2013 (2013-10-31), pages 31 - 32
Attorney, Agent or Firm:
RYUKA IP LAW FIRM (JP)
Ryuka international patent business corporation (JP)
Ryuka international patent business corporation (JP)
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