Browsing Orman Endüstri Mühendisliği Bölümü by Author "Gündüz, Gökhan"
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Anatomy of wooden core of Ottoman composite archery bows
Gündüz, Gökhan; Yaman, Barbaros; Özden, Seray; Dönmez, Süleyman Cem (Sains Malaysiana, 2013)Composite archery bows have been well known and used by Asiatic societies for thousands of years. The Turkish composite bow, made of wood, horn, sinew and glue is one of the most famous and powerful bows in the world. ... -
Balistik panel ve koruyucu zırh üretiminde kullanılan lif ve kompozit malzemeler
Sözen, Eser; Gündüz, Gökhan; İmren, Erol (Bartın Orman Fakültesi Dergisi, 2016)Her canlı varlık, dışarıdan gelebilecek saldırılara karşı içgüdüsel olarak korunma ihtiyacı hissetmektedir. Insanoğlu da tarih boyunca çevresel faktörlere karşı önlem aldığı gibi, düşmanlardan gelebilecek saldırılara ... -
Biyokütle kullanımının enerji, çevre, sağlık ve ekonomi açısından değerlendirilmesi
Güngör, Ersin; Sözen, Eser; Gündüz, Gökhan; Aydemir, Deniz (Bartın Orman Fakültesi Dergisi, 2017)Dünyadaki nüfus artışına bağlı olarak ürün ve hizmetlerin sayısında ve kalitesinde de artışlar görülmektedir. Bu artışlarla birlikte enerjiye duyulan ihtiyaç da fazlalaşmıştır. Birçok ülkenin kısa ve uzun vadede enerji ... -
Changes in specific gravity and equilibrium moisture content in heat-treated fir (abies nordmanniana subsp. bornmülleriana mattf.) wood
Gündüz, Gökhan; Peter, Niemz; Aydemir, Deniz (Taylor & Francis, 2008-09-01)The goal of this study was to determine the changes in specific gravity and equilibrium moisture content of fir (Abies nordmanniana subsp. bornmu¨ lleriana Mattf.) wood after heat treatment at different temperatures and ... -
Changes in the chemical structure of thermally treated wood
Tümen, İbrahim; Aydemir, Deniz; Gündüz, Gökhan; Üner, Birol; Çetin, Hakan (Bioresource Technology, 2010)Changes in the chemical structure of hornbeam and uludag fir woods during thermal treatment were investigated at three temperatures (170, 190, and 210 oC) and three durations (4, 8, and 12 hours). After thermal treatment, ... -
Characterization and elemental analysis of wood pellets obtained from low-valued types of wood
Gündüz, Gökhan; Saraçoğlu, Nedim; Aydemir, Deniz (Taylor & Francis, 2016)In this study, we compared the quality of wood pellets obtained from several different raw materials, i.e., Rhododendron ponticum (Type 1), Laurus nobilis (Type 2), and Castanea sativa (Type 3). The quality of the wood ... -
The density, compression strength and surface hardness of heat treated hornbeam (carpinus betulus ) wood
Gündüz, Gökhan; Korkut, Süleyman; Aydemir, Deniz; Bekar, İlter (Maderas. Ciencia y tecnología, 2009-02-13)The heat treatment of wood is an environment-friendly method for wood preservation. The heat treatment process only uses steam and heat, and no chemicals or agents are applied to the material during the process. Tests ... -
Drying schedules calculation of Camiyani Black Pine (Pinus nigra Arn. subsp. pallasiana var. pallasiana) by computer programming
Aytekin, Alper; Gündüz, Gökhan; Kaygın, Bülent; Korkut, Süleyman; Onat, S. Murat (African Journal of Biotechnology, 2009-04-20)In this study, computer aided drying schedules were developed for Camiyani Black Pine (Pinus nigra var. pallasiana) lumber for less than 30 mm thick, between 30-60 mm thick and larger than 60 mm. Schedules were calculated ... -
Effect of heat treatment of wild cherry wood on abrasion resistance and withdrawal capacity of screws
Aytin, Ayhan; Korkut, Süleyman; As, Nusret; Uysal, Öner; Gündüz, Gökhan (Drvna Industrija, 2015-11-06)In its wise use, many properties of wood are important. Among these properties, wood abrasion resistance (AR) and withdrawal capacity of screws (WCS) are deemed to be relatively signifi cant. It is well know that heat ... -
The effect of heat treatment on some mechanical properties and color changes of Uludag fir wood
Gündüz, Gökhan; Aydemir, Deniz; Korkut, Süleyman (Taylor & Francis, 2010-03-08)In this study, the effects of heat treatment on color, mass loss, compression strength, and hardness of Uludag fir (Abies bornmulleriana Mattf.) were investigated. Wood specimens conditioned at a relative humidity of ... -
The effect of mass loss on mechanic properties of heat-treated paulownia wood
Kaygın, Bülent; Gündüz, Gökhan; Aydemir, Deniz (Wood Research, 2009)In this study, the eff ect of mass loss on mechanic properties of Paulownia (Paulownia elongata) wood was investigated. For this study, three diff erent temperatures (160, 180, and 200oC) and durations (3, 5, and 7 hours) ... -
The effect of treatment time on dimensionally stability, moisture content and mechanical properties of heat treated anatolian chestnut (Castanea sativa Mill.) wood
Gündüz, Gökhan; Aydemir, Deniz; Kaygın, Bülent; Aytekin, Alper (Wood Research, 2009)In this study, the effect of treatment time on dimensional stability, moisture content, and mechanical properties of heat-treated Anatolian chestnut (Castanea sativa Mill.) were investigated. Test specimens were subjected ... -
The effects of adhesive ratio and pressure time on some properties of oriented strand board
Gündüz, Gökhan; Yapıcı, Fatih; Özçifçi, Ayhan; Kalaycıoğlu, Hülya; Eroğlu, Hüdaverdi (Bioresources, 2011)This study was carried out to determine the effects of adhesive ratio and pressure time on thickness swelling (TS), internal bond (IB), modulus of rupture (MOR), and modulus of elasticity (MOE) properties of oriented strand ... -
The effects of heat treatment on physical and technological properties and surface roughness of Camiyanı Black Pine (Pinus nigra Arn. subsp. pallasiana var. pallasiana) wood
Gündüz, Gökhan; Korkut, Süleyman; Korkut, Derya Sevim (Elsevier, 2007-06-28)Heat treatment is often used to improve the dimensional stability of wood. In this study, the effects of heat treatment on physical properties and surface roughness of Camiyanı Black Pine (Pinus nigra Arn. subsp. pallasiana ... -
The effects of tannin and thermal treatment on physical and mechanical properties of laminated chestnut wood composites
Gündüz, Gökhan; Aydemir, Deniz; Onat, S. murat; Akgün, Kemal (Bioresources, 2011)The aim of this study was to investigate the effects of tannin and thermal treatment on physical properties such as dimensional stability and moisture content (%), as well as mechanical properties such as bending strength, ... -
The effects of thermal treatment on the mechanical properties of wild Pear (Pyrus elaeagnifolia Pall.) wood and changes in physical properties
Gündüz, Gökhan; Aydemir, Deniz; Karakaş, Gürdeniz (Materials & Design, 2009-12-01)The aim of the study was to investigate the effects of thermal treatment on the mechanical and physical properties of wild pear wood. The results obtained for thermal treatment at 160 C for 2 h showed that the modulus ... -
Energy sources, part a: recovery, utilization, and environmental effects
Saraçoğlu, Nedim; Gündüz, Gökhan (Taylor & Francis, 2009-01-01)Wood pellets are an economic, sustainable, and environmentally friendly alternative to the fossil fuels available. Both new and residual wood is used to supply the pellet production, and new raw material resources are ... -
Heat treated wood–nylon 6 composites
Gardner, Douglas J.; Aydemir, Deniz; Kızıltaş, Alper; Erbaş Kızıltaş, Esra; Gündüz, Gökhan (Elsevier, 2014-09-03)Heat treatment is a relatively benign modification method that is growing as an industrial process to improve hygroscopicity, dimensional stability and biological resistance of lignocellulosic fillers. There also has ... -
The impacts of heat treatment on lap joint shear strength of black pine wood
Aydemir, Deniz; Gündüz, Gökhan; Onat, S. Murat (Taylor & Francis, 2010-09-02)This study was conducted to determine the impacts of heat treatment on lap shear strength, density, and mass loss of black pine wood. In the study, black pine wood boards bonded with polyurethane were subjected to ... -
The influence of mass loss on the mechanical properties of heat-treated black pine wood
Gündüz, Gökhan; Aydemir, Deniz (Wood Research, 2009)Heat has been a method used to dry and modify the properties of wood since ancient times. Nowadays, heat is used as industrial processes for the same reason. Treatment at temperatures above 150°C can change the color of ...