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All Journal Wood Research Journal : Journal of Indonesian Wood Research Society Wood Research Journal : Journal of Indonesian Wood Research Society Journal of Novel Engineering Science and Technology
Ulay, Göksel
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Agriculture, Biological Sciences & Forestry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Environmental Science Mechanical Engineering

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 1 
Effect of Micronised Pumice Powder Addition on Shore-D Hardness Values of Medium Density Fiber Epoxy Composite Ulay, Göksel; Koyuncu, Menderes
Journal of Novel Engineering Science and Technology Vol. 3 No. 02 (2024): Journal of Novel Engineering Science and Technology
Publisher : The Indonesian Institute of Science and Technology Research

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56741/jnest.v3i02.531

Abstract

The present study explores the effect of MDF powder-reinforced filled pumice powder epoxy composites on their Shore - D properties, produced by using different weight percentage. The composites samples containing 10, 20, 30, 40, and 50wt% of pumice powder were fabricated by using hand lay-up technique. The specimens prepared were tested for hardness as per the ASTMD2240 standards. The outcomes of the study revealed that pumice powder amount in the composite increasing with an increased in Shore-D hardness values. It is noted that the weight percentage of 50% of pumice powder and 50% of MDF powder composite was produce the maximum hardness values.
A Study on the Application of Wax on Linden (Tilia tomentosa Moench.) Wood Peker, Hüseyin; Ulay, Göksel; Ayata, Ümit
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.49-54

Abstract

Linden wood is used in match production, double bass making, carving, musical instrument crafting, and furniture production. This study examined the effects of applying varying numbers of wax coats (1, 2, and 3 coats) on the color parameters, glossiness values, and whiteness index (WI*) values of linden (Tilia tomentosa Moench.) wood surfaces. A comparison was made between untreated surfaces and those treated with three different wax applications. According to the obtained results, all tests except for hue angle were found to be significant in the analysis of variance. The ∆E* values were found to be 5.13 for the application of 1 coat of wax, 6.53 for the application of 2 coats of wax, and 6.95 for the application of 3 coats of wax. After applying waxes to the wood, reductions were noted in WI* and L* values, while enhancements were detected in glossiness readings at 60 and 85 degrees, as well as in a*, C*, ho, and b*values. 
Application of Single and Double Component Wood Bleaching Chemicals on Surface Properties of Naga (Brachystegia cynometroides) Wood Peker, Hüseyin; Ulay, Göksel; Ayata, Ümit
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.37-42

Abstract

In this study, some surface changes (color parameters, whiteness index (WI*), and glossiness) occurring after the application of single [oxalic acid (C2H2O4)] and double component [sodium hydroxide (NaOH) + hydrogen peroxide (H2O2)] wood bleaching chemicals on naga (Brachystegia cynometroides) wood were investigated. The bleached surfaces were compared with the unbleached surfaces. According to the obtained results, the ∆E* values were determined as 2.99 for C2H2O4 chemical and 16.95 for NaOH + H2O2 chemical. Significant results were found for all tests in the analysis of variance. Increases in b* and C* values were observed with C2H2O4, while decreases were observed with NaOH + H2O2 chemical. With both wood bleaching chemicals, increases were found in WI* values in parallel directions to the fibers, as well as in ho and L* values, while decreases were obtained in glossiness values at 60 and 85 degrees in both parallel and perpendicular directions to the fibers, and in a* values.
A Study on the Application of Wax on Linden (Tilia tomentosa Moench.) Wood Peker, Hüseyin; Ulay, Göksel; Ayata, Ümit
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.49-54

Abstract

Linden wood is used in match production, double bass making, carving, musical instrument crafting, and furniture production. This study examined the effects of applying varying numbers of wax coats (1, 2, and 3 coats) on the color parameters, glossiness values, and whiteness index (WI*) values of linden (Tilia tomentosa Moench.) wood surfaces. A comparison was made between untreated surfaces and those treated with three different wax applications. According to the obtained results, all tests except for hue angle were found to be significant in the analysis of variance. The ∆E* values were found to be 5.13 for the application of 1 coat of wax, 6.53 for the application of 2 coats of wax, and 6.95 for the application of 3 coats of wax. After applying waxes to the wood, reductions were noted in WI* and L* values, while enhancements were detected in glossiness readings at 60 and 85 degrees, as well as in a*, C*, ho, and b*values. 
Application of Single and Double Component Wood Bleaching Chemicals on Surface Properties of Naga (Brachystegia cynometroides) Wood Peker, Hüseyin; Ulay, Göksel; Ayata, Ümit
Wood Research Journal Vol 15, No 2 (2024): WOOD RESEARCH JOURNAL
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51850/wrj.2024.15.2.37-42

Abstract

In this study, some surface changes (color parameters, whiteness index (WI*), and glossiness) occurring after the application of single [oxalic acid (C2H2O4)] and double component [sodium hydroxide (NaOH) + hydrogen peroxide (H2O2)] wood bleaching chemicals on naga (Brachystegia cynometroides) wood were investigated. The bleached surfaces were compared with the unbleached surfaces. According to the obtained results, the ∆E* values were determined as 2.99 for C2H2O4 chemical and 16.95 for NaOH + H2O2 chemical. Significant results were found for all tests in the analysis of variance. Increases in b* and C* values were observed with C2H2O4, while decreases were observed with NaOH + H2O2 chemical. With both wood bleaching chemicals, increases were found in WI* values in parallel directions to the fibers, as well as in ho and L* values, while decreases were obtained in glossiness values at 60 and 85 degrees in both parallel and perpendicular directions to the fibers, and in a* values.
Co-Authors Ayata, Ümit Koyuncu, Menderes Peker, Hüseyin