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

Yıl 2019, Cilt: 4 Sayı: 4, 684 - 687, 31.12.2019

Ayhan Aytin

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

Öz

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.

Anahtar Kelimeler

Heat treatment, Cryogenic treatment

Kaynakça

• Sahin Kol H., Aysal Keskin S. and Gündüz Vaydoğan K.,(2017). Some surface characteristic of artificially weathered heat-treated wood. Journal of Advanced Technology Sciences. 1(2). 831-838.
• Aytin A.,(2013) “Effect of High Temperature Treatment on Physical, Mechanic and Technologic Properties of Wild Cherry(Cerasus avium (L.) Monench)”,Doctoral Thesis, University of Duzce.
• Srinivas K. and Pandey K. K., (2012). Effect of Heat Treatment on Color Changes, Dimensional Stability, and Mechanical Properties of Wood. Journal of Wood Chemistry and Technology. V.32(4), 304-316.
• Johansson D., (2005). Strenght and colour response of solid wood to heat treatment, Licentiate Thesis, Luleå Teknoloji Üniversitesi, Department of Skellefteå Campus, Sweden.
• Anonim, http://www.thermowood.fi (Erişim Tarihi: 28 Haziran 2010).
• Çalıova Z., (2011). The Effect of Heat-Treatment on some physicial and mechanical properties of Alder and Oriental spruce, Graduate. Graduate School of Natural and Applied Sciences. Department of Furniture and Decoration Education. Karabük University.
• Aytin A., Korkut S., Cakicier N., Arslan Y., (2016). The Effect of Cryogenic Processing on Fiber Parallel Pressure Resistance in ThermoWood Populus Tremula Wood. 27th International Conference on Wood Modification and Tehnology. Zagreb.
• Kam M., Saruhan H. and Güney T., (2016). experimentalvibration analysisof cryogenictreatedand hot forgingtreated shafts. Journal of Advanced Technology Sciences. 5(3).21-30.
• TS 4176(1984): “Wood-Sampling sample trees and long for determination of physical andmechanical properties of wood homogeneus stands,” Turkish Standart Institution, Ankara, Turkey.
• TS 2595(1977): Wood determination of ultimate stress in compression parallel to grain, TurkishStandart Institution, Ankara, Turkey.