The Effect Of Cryogenic Application On Parallel Fiber Pressure Resistance Of Thermowood-Treated Sorbus Torminalis

Year 2019, Volume: 4 Issue: 4, 684 - 687, 31.12.2019

Ayhan Aytin

https://doi.org/10.35229/jaes.643486

Abstract

This study aimed to analyze the possible changes in
the pressure resistance values parallel to the fibers(CS) by subjecting
heat-treated wood to sub-zero temperatures. Within the scope of the study, test
specimens were first prepared by applying thermowood heat treatment at 190 and
212 °C for 1 h to samples of wild service tree wood (Sorbus torminalis). Both
the heat-treated samples along with untreated control samples were then kept at
-80 °C for 6. 18 and 54 h to obtain the test specimens. When compared to the
control samples. Test results showed a difference in the parallel fiber
pressure resistance of the heat-treated test specimens held at -80 °C and the
values were seen as very positive, especially with the 6-h and 18-h
applications. The CS resistance values of the control samples and the heat
treated samples as N/mm² at 190 and 212 °C for 1 h were respectively
56.12, 69.28 and 62.12 for initial; 51.38, 73.25 and 80.55 for 6 h; 50.31,
72.82 and 75.66 for 18 h; 55.85, 60.19 and 62.14 for 54 h.

Keywords

Heat treatment, Cryogenic treatment

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