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Abstract
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Article Information:
Anisotropic Relaxation and Creep Properties of Apple (cv. Shafi Abadi and Golab Kohanz)
A. Gorji Chakespari, A. Rajabipour and H. M obli
Corresponding Author: Abbas Gorji Chakespari
Submitted: 2010 May, 25
Accepted: 2010 June, 05
Published: 2010 July, 30 |
Abstract:
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Creep and stress relaxation are two important phenomena observed in viscoelastic materials. In this
study creep and stress relaxation properties of two Iranian apples varieties (Shafi Abadi and Golab Kohanz) was
investigated. A model based on generalized Maxwell model (contain of a single M axwell model in parallel with
a free spring) was used for determination of relaxation model and a model based on Burger model which is the
series combination of the Kelvin and Maxwell models was used to fit the measured creep data. The decay
modulus, the equilibrium modulus, time of relaxation, and specific viscosity in the relaxation model and
instantaneous elastic modulus retardation time and coefficient of viscosity associated w ith Newtonian flow in
creep model were determined.
Key words: Creep, decay modulus, equilibrium modulus, retardation time, relaxation time, ,
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Cite this Reference:
A. Gorji Chakespari, A. Rajabipour and H. M obli, . Anisotropic Relaxation and Creep Properties of Apple (cv. Shafi Abadi and Golab Kohanz). Advance Journal of Food Science and Technology, (4): Page No: 200-205.
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ISSN (Online): 2042-4876
ISSN (Print): 2042-4868 |
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