nurgul tankut | Duzce University / Düzce Üniversitesi (original) (raw)
Papers by nurgul tankut
ZONGULDAK KARAELMAS ÜNİVERSİTESİ
Materials & Design, Jan 1, 2010
Edge banding is used to cover the exposed sides of wood materials such as plywood, particleboard ... more Edge banding is used to cover the exposed sides of wood materials such as plywood, particleboard or medium-density fiberboard, giving the appearance of a solid (or more valuable) material. This study was carried out to determine the effects of the edge banding material, namely polyvinyl chloride (PVC), melamine and wood veneer, thickness of edge banding material (0.4, 1, and 2 mm), and wood composite panel type on the diagonal compression and tension strength properties of particleboard surfaced with synthetic resin sheet (LamPb) and MDF surfaced with synthetic resin sheet (LamMDF).
Materials & Design, Jan 1, 2010
Since joints are often the weakest points in furniture construction a detailed analysis of the fa... more Since joints are often the weakest points in furniture construction a detailed analysis of the factors influencing their load bearing capacity and its effectiveness in utilizing the full strength of the wood is reported here.
African Journal of Biotechnology, Jan 1, 2011
Cases are one of the most important types of furniture produced, yet relatively little research h... more Cases are one of the most important types of furniture produced, yet relatively little research has been done on the case rigidity. In this study, types of the fastener properties to overall case rigidity were investigated along with the effect of material type and thickness on stiffness. A total of sixteen cases were constructed and tested. Results indicated that panel thickness and material type significantly increased structural stiffness of case type furniture. The results of experiments showed that the stiffness of case furniture could be increased by increasing the material thickness from 16 to 18 mm. Medium density fiberboard (MDF) cases, in both doweled and screwed ones, were stiffer than particleboard cases. Results indicated that the stiffness of case furniture could be increased by increasing the stiffness of corner joints, e.g. by using screw with glue instead of using only screw or applying glue to the dowels and whole edges instead of dowels only. Case furniture designs using screws with glue resulted in higher case stiffness than similar designs using glued dowel joints. In general, the stiffer the end connection, the less the deflection of the case was observed. The results also indicated that rigidity of case furniture comes mainly from the gluing of the joining surfaces. Therefore, knowing the rigidity of the case furniture made of wood composites is fundamental to the design of safe, cost efficient and aesthetic design.
Materials & Design, Jan 1, 2009
This study was carried out to determine the performance of different construction techniques on t... more This study was carried out to determine the performance of different construction techniques on the diagonal compression and tension strength of case-type furniture corner joints, and to determine the effects on these joints of some factors including the type of joint, the type of ...
International journal of adhesion and adhesives, Jan 1, 2007
This study was carried out in order to determine the effects of adhesive type, bond line thicknes... more This study was carried out in order to determine the effects of adhesive type, bond line thickness and moisture content on the strength of mortise and tenon joints. The polyvinyl acetate (PVAc), urea-formaldehyde (UF) and animal adhesives were used, combined with ...
Turkish Journal of Agriculture and …, Jan 1, 2004
Although joints of wood biscuit are widely used in the construction of furniture cases, there is ... more Although joints of wood biscuit are widely used in the construction of furniture cases, there is no information available that can be used in the design of multi-fastener joints. Most available information is about dowel joints. Also, limited information is available on the bending strength of corner joints. However, those furniture engineers who design cases on rational bases must have Turk J Agric For 28 (2004) 301-309 Abstract: This study was carried out to evaluate the bending moment resistance and stiffness of case-type furniture corner joints constructed with wood biscuits, and to determine the effects on these joints of some factors including the spacing between wood biscuit hole centers, the distance from the center of the biscuit hole to the corresponding outside edge of the board material, the method of loading, the type of composite board, and the gluing technique. The results indicated that corner joint strength comes mainly from the edge gluing of the face and butt member and not from the glued biscuits. Particleboard (PB) glued and unglued edge corner joints were stronger than similar joints constructed with MDF (medium density fiberboard). Glued edge MDF corner joints were stiffer than similar joints constructed with PB. Spacing between biscuits of 10, 12.5 and 15 cm on-center in multiplebiscuit corner joints made only small differences in total strength in both tension and compression tests. Therefore, in case-type furniture manufacturing, using 15 cm on-center biscuit spacing instead of 10 cm seems much better in terms of saving time and biscuit joints. Unglued and glued edge joints had greater strength when the distance was 5 cm between the biscuit hole and the corresponding outside edge of the specimen than when it was 6.5 or 7.5 cm with 12.5 cm on-center biscuit spacing. However, in industry most case-type furniture designs have a fixed end instead of a free end joints, and so using a 6.5 or 7.5 cm end distance instead of 5 cm may not make any difference.
Turkish journal of agriculture and …, Jan 1, 2005
Mortise and tenon joints have been widely used for centuries and, despite the increasing use of d... more Mortise and tenon joints have been widely used for centuries and, despite the increasing use of dowel joints, they are still favored for many types of construction, especially for building chair frames . Örs et al. (1998) compared the mechanical performance of traditional joints (dowel and mortise and tenon joints) with alternative joints (minifix and multifix) for furniture frame construction. They concluded that alternative joints performed better than the traditional joints under static loading. designed and tested school desks and chairs for developing and Turk J Agric For 29 (2005) 493-498 Abstract: Until recently, detailing of joints was largely a matter of tradition, based on trial and error methods. However, in the engineering design of furniture, it is necessary for designers to create joints with a specified strength. This study was undertaken accordingly, to obtain the strength of round tenon/round mortise, rectangular tenon/rectangular mortise and rectangular tenon/round mortise joints assembled under nominally identical conditions with different end configurations. In addition, each end configuration was compared at rail widths, each with 2 widths of tenon. The results showed that rectangular end mortise and tenons are about 15% stronger than both round end mortise and tenons and rectangular end tenons fitting into round end mortise joints. Meanwhile, joint geometry has a significant effect on the strength of those particular joints. As tenon width and length were increased, the strength of the joint was correspondingly improved. The type of mortise and tenon end has an appreciable effect on the breaking strength of the joints as rectangular end mortise and tenons are stronger than round end mortise and tenon joints; however, this does not limit the use of round end mortise and tenon joints in chair construction. It may actually be advantageous to use round end tenon and mortise joints for the front leg/side rail joint in a chair frame as the internal stresses may be more uniformly distributed over the rounded ends of the mortise, thus reducing the risk of splitting the leg member. The third type of construction, with a square end tenon fitting into a round end mortise, was, however, less satisfactory.
ZONGULDAK KARAELMAS ÜNİVERSİTESİ
Materials & Design, Jan 1, 2010
Edge banding is used to cover the exposed sides of wood materials such as plywood, particleboard ... more Edge banding is used to cover the exposed sides of wood materials such as plywood, particleboard or medium-density fiberboard, giving the appearance of a solid (or more valuable) material. This study was carried out to determine the effects of the edge banding material, namely polyvinyl chloride (PVC), melamine and wood veneer, thickness of edge banding material (0.4, 1, and 2 mm), and wood composite panel type on the diagonal compression and tension strength properties of particleboard surfaced with synthetic resin sheet (LamPb) and MDF surfaced with synthetic resin sheet (LamMDF).
Materials & Design, Jan 1, 2010
Since joints are often the weakest points in furniture construction a detailed analysis of the fa... more Since joints are often the weakest points in furniture construction a detailed analysis of the factors influencing their load bearing capacity and its effectiveness in utilizing the full strength of the wood is reported here.
African Journal of Biotechnology, Jan 1, 2011
Cases are one of the most important types of furniture produced, yet relatively little research h... more Cases are one of the most important types of furniture produced, yet relatively little research has been done on the case rigidity. In this study, types of the fastener properties to overall case rigidity were investigated along with the effect of material type and thickness on stiffness. A total of sixteen cases were constructed and tested. Results indicated that panel thickness and material type significantly increased structural stiffness of case type furniture. The results of experiments showed that the stiffness of case furniture could be increased by increasing the material thickness from 16 to 18 mm. Medium density fiberboard (MDF) cases, in both doweled and screwed ones, were stiffer than particleboard cases. Results indicated that the stiffness of case furniture could be increased by increasing the stiffness of corner joints, e.g. by using screw with glue instead of using only screw or applying glue to the dowels and whole edges instead of dowels only. Case furniture designs using screws with glue resulted in higher case stiffness than similar designs using glued dowel joints. In general, the stiffer the end connection, the less the deflection of the case was observed. The results also indicated that rigidity of case furniture comes mainly from the gluing of the joining surfaces. Therefore, knowing the rigidity of the case furniture made of wood composites is fundamental to the design of safe, cost efficient and aesthetic design.
Materials & Design, Jan 1, 2009
This study was carried out to determine the performance of different construction techniques on t... more This study was carried out to determine the performance of different construction techniques on the diagonal compression and tension strength of case-type furniture corner joints, and to determine the effects on these joints of some factors including the type of joint, the type of ...
International journal of adhesion and adhesives, Jan 1, 2007
This study was carried out in order to determine the effects of adhesive type, bond line thicknes... more This study was carried out in order to determine the effects of adhesive type, bond line thickness and moisture content on the strength of mortise and tenon joints. The polyvinyl acetate (PVAc), urea-formaldehyde (UF) and animal adhesives were used, combined with ...
Turkish Journal of Agriculture and …, Jan 1, 2004
Although joints of wood biscuit are widely used in the construction of furniture cases, there is ... more Although joints of wood biscuit are widely used in the construction of furniture cases, there is no information available that can be used in the design of multi-fastener joints. Most available information is about dowel joints. Also, limited information is available on the bending strength of corner joints. However, those furniture engineers who design cases on rational bases must have Turk J Agric For 28 (2004) 301-309 Abstract: This study was carried out to evaluate the bending moment resistance and stiffness of case-type furniture corner joints constructed with wood biscuits, and to determine the effects on these joints of some factors including the spacing between wood biscuit hole centers, the distance from the center of the biscuit hole to the corresponding outside edge of the board material, the method of loading, the type of composite board, and the gluing technique. The results indicated that corner joint strength comes mainly from the edge gluing of the face and butt member and not from the glued biscuits. Particleboard (PB) glued and unglued edge corner joints were stronger than similar joints constructed with MDF (medium density fiberboard). Glued edge MDF corner joints were stiffer than similar joints constructed with PB. Spacing between biscuits of 10, 12.5 and 15 cm on-center in multiplebiscuit corner joints made only small differences in total strength in both tension and compression tests. Therefore, in case-type furniture manufacturing, using 15 cm on-center biscuit spacing instead of 10 cm seems much better in terms of saving time and biscuit joints. Unglued and glued edge joints had greater strength when the distance was 5 cm between the biscuit hole and the corresponding outside edge of the specimen than when it was 6.5 or 7.5 cm with 12.5 cm on-center biscuit spacing. However, in industry most case-type furniture designs have a fixed end instead of a free end joints, and so using a 6.5 or 7.5 cm end distance instead of 5 cm may not make any difference.
Turkish journal of agriculture and …, Jan 1, 2005
Mortise and tenon joints have been widely used for centuries and, despite the increasing use of d... more Mortise and tenon joints have been widely used for centuries and, despite the increasing use of dowel joints, they are still favored for many types of construction, especially for building chair frames . Örs et al. (1998) compared the mechanical performance of traditional joints (dowel and mortise and tenon joints) with alternative joints (minifix and multifix) for furniture frame construction. They concluded that alternative joints performed better than the traditional joints under static loading. designed and tested school desks and chairs for developing and Turk J Agric For 29 (2005) 493-498 Abstract: Until recently, detailing of joints was largely a matter of tradition, based on trial and error methods. However, in the engineering design of furniture, it is necessary for designers to create joints with a specified strength. This study was undertaken accordingly, to obtain the strength of round tenon/round mortise, rectangular tenon/rectangular mortise and rectangular tenon/round mortise joints assembled under nominally identical conditions with different end configurations. In addition, each end configuration was compared at rail widths, each with 2 widths of tenon. The results showed that rectangular end mortise and tenons are about 15% stronger than both round end mortise and tenons and rectangular end tenons fitting into round end mortise joints. Meanwhile, joint geometry has a significant effect on the strength of those particular joints. As tenon width and length were increased, the strength of the joint was correspondingly improved. The type of mortise and tenon end has an appreciable effect on the breaking strength of the joints as rectangular end mortise and tenons are stronger than round end mortise and tenon joints; however, this does not limit the use of round end mortise and tenon joints in chair construction. It may actually be advantageous to use round end tenon and mortise joints for the front leg/side rail joint in a chair frame as the internal stresses may be more uniformly distributed over the rounded ends of the mortise, thus reducing the risk of splitting the leg member. The third type of construction, with a square end tenon fitting into a round end mortise, was, however, less satisfactory.