EJPAU 2005. Majka J. TENSILE DRYING STRESS VALUE IN DEPENDENCE OF THE SHRINKAGE RESTRAINT METHOD

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.

2005
Volume 8
Issue 3

Topic:

Wood Technology

ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES

Majka J. 2005. TENSILE DRYING STRESS VALUE IN DEPENDENCE OF THE SHRINKAGE RESTRAINT METHOD, EJPAU 8(3), #33.
Available Online: http://www.ejpau.media.pl/volume8/issue3/abs-33.html

TENSILE DRYING STRESS VALUE IN DEPENDENCE OF THE SHRINKAGE RESTRAINT METHOD

Jerzy Majka
Department of Hydrothermal Wood Processing and Modification of Wood, The August Cieszkowski Agricultural University of Poznan, Poland

ABSTRACT

The subject of study was determination of maximum values of tensile drying stress in samples of European beech (Fagus sylvatica L.) wood in radial direction. In drying stress studies the measurement of maximum stress is axial force, present at cross section of the sample due to complete restraint of shrinkage. In the presented research this assumption was executed in two ways: in the effect of cycle loading of the sample (used in numerous experiments so far) and with the use of extensometer. The research results prove the relationship between the drying stress values and the shrinkage restraint method.

Key words: shrinkage, restraint, drying stress, drying, European beech.

Jerzy Majka
Department of Hydrothermal Wood Processing and Modification of Wood,
The August Cieszkowski Agricultural University of Poznan, Poland
Wojska Polskiego 38/42, 60-627 Poznan, Poland

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