Osman Percin

• Assoc. Prof.
• Necmettin Erbakan University

In this research, it is intended to determine modes of use for undersink cabinets located in house kitchens and to determine the needs required in this volume of space. For this purpose 50 house kitchen undersink cabinets have been photographed while they are being used and materials-objects contained in them have been determined in Türkiye. In con...

Air-dried density, weight loss (WL), impact bending strength (IBS), Shore-D hardness, and thermal conductivity values were determined for heat-treated poplar (Populus nigra L.) and beech (Fagus orientalis Lipsky) wood and compared with those for untreated samples. The test samples were heat-treated at 140, 160, 180, and 200 °C for 2 h. The results...

This study was conducted to investigate some characteristics of thermally treated Scots pine (Pinus sylvestris L.) wood specimens such as air-dried density, color change, average surface roughness, and sound absorption capacity. Heat treatment of Scots pine wood was performed at atmospheric pressure at 140, 160, 180, and 200 °C for 2 h. As a result...

İç mekan tasarımı ve iç mimarlık öğrencileri eğitimleri boyunca iç mekan tasarımına yönelik farklı isim ve içeriklerde dersler almaktadırlar. Mekan tefrişlerinde çoğunlukla mobilyalar tasarlamakta ve iç mekanların tasarımını tamamlamaktadırlar. Bu araştırmanın amacı, iç mekan tasarımı ve iç mimarlık bölümlerinde öğrenim gören öğrencilerin iç mekan...

Laminated veneer lumber (LVL) and reinforced laminated veneer lumber (RLVL) with carbon fiber were produced from heat-treated Scotch pine (Pinus sylvestris L.) wood using phenol formaldehyde (PF), polyvinyl acetate (PVAc), and polyurethane (PU) resins. Wood veneers were subjected to heat treatments at 150 °C, 170 °C, or 190 °C for 2 h before lamina...

Carbon fiber fabric reinforced laminated veneer lumber (RLVL) pieces were prepared by using heat-treated beech (Fagus orientalis Lipsky) veneers with polyurethane (PU) adhesive as the binder. Carbon fiber fabric was tested in three different locations with solid material and non-reinforced samples (on the bottom adhesive line, upper adhesive line,...

Bu çalışma, ısıl işlem uygulanmış ahşap malzemelerden farklı tutkallarla yapıştırılarak ve karbon fiber kumaş ile güçlendirilerek üretilen lamine kaplama kerestelerin (LVL) hava kurusu yoğunluk ve liflere paralel basınç direnci değerlerindeki değişimlerin belirlenmesi amacıyla yapılmıştır. Bu maksatla karaçam (Pinus nigra) ahşap malzemeler, 150, 17...

This study aims to study the improvement in the properties of heat-treated wood material by impregnation. For this purpose, black pine (Pinus nigra Arnold) wood specimens were modified in two stages: impregnation with 1%, 3% and 5% of diammonium phosphate (DAP) and sodium carbonate (SC) compounds followed by heat treatment at four different tempera...

The aim of this study was to determine some physical and mechanical properties of spruce (Picea orientalis) wood, which was impregnated with aqueous solutions of valonia (valex) (the extract of Quercus ithaburensis), pine bark powder (pinex) (Pinus brutia Ten.) and gallnut powder (galex) (Quercus infectoria Oliver) as a pre-treatment and then heat...

The purpose of this paper is to determine the effects of heat treatment on some properties of black pine (Pinus nigra A.) and larex (Larix decidua), woods. For this purpose, test samples were heat treated at 140, 160, 180 and 200°C for 2 and 5 hours. The air-dried density, equilibrium moisture content (EMC), surface roughness and bonding strengths...

Ahşap, yaygın olarak kullanılan en eski yapı malzemelerden birisidir. Farklı alanlarda da farklı amaçlarla kullanımına yönelik giderek artan bir talep vardır. Bu talebi karşılayabilmek için ahşap esaslı yapısal kompozitler geliştirilmiştir. Bu çalışmada, ısıl işlem uygulanmış ve fenol formaldehit (FF) tutkalı kullanılarak karbon ve cam elyaf ile gü...

The strength of a structural system often depends on the interconnections between the components of the structure. Screws are one of the most widely used fasteners in construction. In this study, the screw withdrawal strength of heat-treated scotch pine (Pinus sylvestris L.) samples reinforced with glass and carbon fibers via Desmodur-vinyl trie ke...

Aim of study: The objective of this study was to evaluate the effects of heat treatment temperature on the screw withdrawal strength on laminated veneer lumbers (LVL). Material and Methods: The LVL samples were prepared in the form of ten layers that 2 mm thickness from the European oak (Quercus petreae L.), Oriental beech (Fagus orientalis L.), sc...

The use of heat-treated wood material and eco-friendly impregnation chemicals are steadily increasing in the woodworking industry over the last decades. In this study, the effects of applications of impregnation and heat treatment on combustion properties of Hornbeam (Carpinus betulus L.) wood were investigated. The test specimens were impregnated...

Abtract Heat treatment at relatively high temperatures (from 150 to 260 °C) is an effective way to improve dimensional stability and bio durability. However, heat treatments usually reduce most of the mechanical properties of wood. This study was performed to investigate the effect of carbon fiber fabric on some mechanical and physical properties o...

In this study, the screw withdrawal resistance of heat-treated hornbeam (Carpinus betulus L.), black pine (Pinus nigra Arnold) and Uludag fir (Abies bornmuellerinana Mattf.) was determined according to the ASTM D 1761 standard. For this purpose, wood materials were heat treated at 150, 170, 190 and 210 °C for 3 h. After the heat treatment, the scre...

Heat-treated wood has an ever-expanding market for exterior and interior applications. The objective of this study was to determine the effect of a heat treatment on the bonding strength of hornbeam (Carpinus betulus L.) wood that was bonded with melamine formaldehyde (MF), polyurethane (PUR), and polyvinyl acetate (PVAc-D4) adhesives. Hornbeam lam...

Heat-treated wood has an ever-expanding market for exterior and interior applications. The objective of this study was to determine the effect of a heat treatment on the bonding strength of hornbeam (Carpinus betulus L.) wood that was bonded with melamine formaldehyde (MF), polyurethane (PUR), and polyvinyl acetate (PVAc-D4) adhesives. Hornbeam lam...

The withdrawal resistance of screws in heat-treated and reinforced laminated veneer lumber (RLVL) was determined in the radial, tangential, and transverse directions. For this reason, laminated veneer lumber (LVL) and RLVL with carbon fibers were produced from heat-treated oak (Quercus petraea (Liebl.)) veneers using phenol formaldehyde as the adhe...

This study describes the effect of heat treatment on the some of the physical and mechanical properties of beech (Fagus orientalis Lipsky) wood at different temperatures and times. Samples of beech wood were heat-treated at 150, 175, and 200°C for 1, 3 and 5 h. The mechanical properties of the heat-treated and untreated samples were determined by b...

In this study, individuals living in the earthquake area, entrance, living room, living room, bedrooms, by determining kitchens and children's rooms located in their presence, ready for a possible earthquake or tremor of the furniture is made to determine the reliable presence in the face of an earthquake. Research questionnaire prepared for this p...

The objective of this study was to investigate the effects of heat treatment on volumetric swelling, bending strength, and compression strength parallel to grain of laminated veneer lumbers (LVLs) with four-layered produced from Anatolian black pine (Pinus nigra J.F. Arnold subsp. nigra var. caramenica (Loudon) Rehder) wood. For this aim, veneers w...

European black pine (Pinus nigra Arnold) and Cedar of Lebanon (Cedrus libani A. Rich) as two softwood species and Sessile Oak (Quercus petraea Lieble), Black poplar (Populus nigra L.) as two hardwood species widespreadly used and grown in Turkey were selected as experimental material for the study. Vertical drill machine were used in the experiment...

Heat treatment changes some physical, mechanical, and chemical properties of wood. Inorganic borates have been used as wood preservatives for many years. The aim of this study was to investigate the effects of impregnation chemicals on some mechanical properties (bending strength (MOR), modulus of elasticity (MOE), tensile strength parallel to the...

The aim of this study was to investigate the effects of borax and boric acid on the combustion properties of heat-treated and laminated veneer lumber (LVL) produced with Anatolian black pine (Pinus nigra J.F. Arnold subsp. nigra var. caramenica (Loudon) Rehder) wood. The combustion test method was performed in three stages according to ASTM E 160-5...

This study was carried out to determine the bonding strength of PVAc-D4 adhesive in the heat treated for some wood materials. For this purpose, bonding strentgh of the Oriental beech (Fagus orientalis L.), oak (Quercus petraea L.), scots pine (Pinus sylvestris L.) and poplar (Populus nigra L.) woods was determined according to BS EN 205 after the s...

Odunun ısıtılması eski çağlardan beri ahşabın kurutulması ve özelliklerin modifiye edilmesinde kullanılan bir metottur. Günümüzde de ısı muamelesi aynı nedenlerden dolayı endüstriyel olarak kullanılmaktadır. 150 °C ve üstündeki sıcaklıklardaki muamelelerle odunun rengi değiştirilebilmekte, biyolojik direnç ve boyutsal stabilizasyon iyileştirilebilm...

This study was carried out to determine the bonding strength of PVAc-D4 adhesive in the heat treated for some wood materials. For this purpose, bonding strentgh of the Oriental beech (Fagus orientalis L.), oak (Quercus petraea L.), scots pine (Pinus sylvestris L.) and poplar (Populus nigra L.) woods was determined according to BS EN 205 after the s...

The study is focused on an experimental investigation of the effect of impregnation and heat treating of oak (Quercus petraea L.) and pine (Pinus sylvestris L.) samples on bending strength, bonding strength, dowel holds performance, screw holds performance, dowel-joint performance and tenon and mortise-joint performance. The solution of 5 % natural...

The following tests were performed on untreated and thermally treated Laminated Veneer Lumbers (LVL). The thermal treatment (at 185 °C and 212 °C) was used for the manufacture of the veneers (poplar Populus spp., Beech Fagus sylvatica L., Quercus robur L. oak, pine and Pinus sylvestris L.). The thermal treatment was carried out before the LVL-produ...

The aim of this study, to determine of the screw holding strength was some of the heat treated woods material. Fort his purpose, beech ((Fagus orientalis L.),oak (Quercus petraea L.) scotch pine (Pinus sylvestris L.) and poplar woods was used. The test samples were exposed to temperature of heat treatment at 150, 175 and 200 ºC. Screw holding stren...

In this study, Limba (Terminalia superba Engl. & Diels) wood laminated with melamine formaldehyde adhesive containing the additive of sodium borate solution is impregnated with sodium borate solution and its combustion properties are searched. For this aim; papel coatings obtained from Limba wood were pasted with melamine formaldehyde adhesive cont...

Since ancient times, heating wood has been used a method to dry and modify its properties. Nowadays, heat treatment is used in industrial processes for the same reasons. Treatment at temperatures above 150 °C can change the color, improve resistance to biodegradation and enhance dimensional stability. However, losses in the mechanical and technolog...

Thermo process is without using chemical material for modification method of wood and was recently introduced to Turkey. This study was conducted to determine some technological properties of the applied heat treatment wood materials blackpine (Pinus nigra var. pallasiana) and ash (Fraxinus exelsior L.) wood. Thereafter each sample was tested for o...

were heat-treated for 2 hours, 6 hours and 10 hours at130ºC, 165ºC and 200 ºC, bending and compression tests were carried out according to the TS 2474 and the TS 2595. Experimental results, as depending on the heat treatment time and temperature, increase the wood the color of the dark. While highest pressure resistance the value controls beech sam...

In the present study, black pine samples laminated with epoxy and polyurethane glues were treated with various wood preservative chemicals and made subject to seawater for one year. The samples were examined from the point of view of physical features such as changes in odor and color as well as their mechanical values in 3-month periods. For this...

In this study, the effects of polivinalacetat (PVAc), ure-formaldehyd (UF), polyuretan (PU) glues and theirmodification with borax on bonding resistance of chestnut (Castenea sativa Mill.) wood in the Agean Regionwere evaluated. For this purpose, the samples prepared from chestnut (Castenea sativa Mill.) woods obtainedfrom Simav in Agean Region wer...

In this study, the effects of heat treatment of 4 kinds particleboards on bending strength, swelling in thickness and screw holding were investigated. For this purpose, firstly particle boards samples were kept in temperatures of 100°C, 120°C and 140°C for time 4 hours and after bending strength, swelling in thickness and screw holding experiments...

Bu çalışmada ; Polivinil Asetat Tutkalı (PVAc), Poliüretan tutkalı (PU) ve D2 bazlı beyaz tutkalı ile 3 katmanlı lamine edilmiş sarıçam (Pinus Sylvestris) ve kayın (Fagus Silvatica) odunlarının bazı mekaniksel özellikleri araştırılmıştır. Deneyler, TS 2474 standartına göre eğilme deneyi, TS 2595 standartına göre liflere paralel basınç deneyi, DIN 5...