Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2001
Volume 4
Issue 2
Topic:
Agricultural Engineering
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Gołacki K. , Stropek Z. 2001. VISCOELASTIC PROPERTIES OF JONAGOLD APPLE FLESH, EJPAU 4(2), #02.
Available Online: http://www.ejpau.media.pl/volume4/issue2/engineering/abs-02.html

VISCOELASTIC PROPERTIES OF JONAGOLD APPLE FLESH

Krzysztof Gołacki, Zbigniew Stropek

 

ABSTRACT



Linear viscoelasticity of the studied material was assumed in the range of strain up to 0.08 mm/mm. A general Maxwell model was suggested to describe the reaction of apple sample to loading. In stress relaxation experiment two kinds of samples that had been cut from the same fruit were axially compressed. One specimen was free to expand in radial direction, while the other one was constrained in a rigid container.

Key words: relaxation test, Poisson’s ratio, bulk modulus, shear modulus, energy.