Effect of thermal modification on some physical and mechanical properties of yellow poplar (liriodendron tulipifera)

• Autorzy: Kurul Fatih , Görgün Hizir Volkan

Identyfikatory

DOI

10.12841/wood.1644-3985.380.01

• Języki publikacji: EN

Abstrakty

EN

Thermal modification is a treatment method used to improve some properties of wood in order to expand its range of usage and extend its lifetime. Although it generally causes a worsening of mechanical properties, some of them can change due especially to lower equilibrium moisture content when compared with untreated wood. Therefore, we wanted to compare some properties of thermally modified and untreated samples having either the same moisture contents or those of the area of use. For this purpose, we tested untreated and thermally modified (at 180° C for 3 hours) yellow poplar (Liriodendron tulipifera) solid wood samples. We investigated density, swelling and shrinkage ratios, and anisotropy of shrinkage as physical properties, and compression and bending strength, modulus of elasticity and impact bending as mechanical properties, according to the relevant ISO standards. The results showed that thermal modification increased the dimensional stability while having a negative impact on the mechanical properties (except modulus of elasticity) at the same moisture content, as indicated in the literature. However, thermally modified samples with moisture content as in the area of use exhibited improved properties (except in the case of impact bending).

Słowa kluczowe

EN

thermal modification; yellow poplar; dimensional stability; mechanical properties; usage area

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2022
• Tom: Vol. 65, nr 209
• Strony: art. no. 1644--3985.380.01
• Opis fizyczny: Bibliogr. 50 poz., fot., tab.

Twórcy

autor

Kurul Fatih

• İstanbul University-Cerrahpaşa, Faculty of Forest, Department of Forestry Industrial Engineering, İstanbul, Turkey

autor

Görgün Hizir Volkan

• İstanbul University-Cerrahpaşa, Faculty of Forest, Department of Forestry Industrial Engineering, İstanbul, Turkey

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• List of standards
• ISO 13061–1:2014 Physical and mechanical properties of wood – test methods for small clear wood specimens – Part 1: Determination of moisture content for physical and mechanical tests
• ISO 13061–2:2014 Physical and mechanical properties of wood – test methods for small clear wood specimens – Part 2: Determination of density for physical and mechanical tests
• ISO 13061–3:2014 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 3: Determination of ultimate strength in static bending
• ISO 13061–4:2014 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 4: Determination of modulus of elasticity in static bending
• ISO 13061–10:2017 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 10: Determination of impact bending strength
• ISO 13061–13:2016 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 13: Determination of radial and tangential shrinkage
• ISO 13061–14:2016 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 14: Determination of volumetric shrinkage
• ISO 13061–15:2016 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 15: Determination of radial and tangential swelling
• ISO 13061–16:2016 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 16: Determination of volumetric swelling. Physical and mechanical properties of wood – test methods for small clear wood specimens – Part 1: Determination of moisture content for physical and mechanical tests
• ISO 13061–17:2017 Physical and mechanical properties of wood – Test methods for small clear wood specimens – Part 17: Determination of ultimate stress in compression parallel to grain
• TS 2595:1977 Paper – Determination of bursting strength

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024).