In the article, the effect of the surface on the strength of the corner joint on the window was analyzed. The corner joint on the window is made in the variant with double and triple dowel and slot ...using PVaC adhesive. Samples were made from pine tree (Pinus Nigra). For research purposes, a special holder was made for the samples to enable testing according to the EN514:2018 standard method. The aim of the work is to determine the influence of the connection element on the strength of the corner joint of the window when using PVaC glue. The samples were divided into 2 groups of 30 samples each, depending on the number of dowels. The standard methods of statistical analysis were used. The test showed that the connection with triple dowel and slot has higher breaking strength values compared to double dowel and slot.
The objective of this study was to investigate relation of diameter of pilot hole and screw, and machining accuracy on withdrawal strengths of the screws and durability of the dining tables. For this ...purpose, fasteners and material types on the failure loads of dining table corner joints have been analyzed experimentally and statistically. Double ended thread bolts with different drilling regimes have been used as fastener types. Parallel investigation of rigidity and durability of tables, according to the current EN norms, and withdrawal capacities in accordance with the procedures described in ISO 9087 was performed. According to the results, it is concluded that the diameter of the drilled hole significantly influences the value of the withdrawal strengths of the screws. By analyzing the effect of drilling diameter on rigidity of tables, a statistically significant difference was determined. As the drilling diameter increases, the rigidity of the examined dining tables decreases
The subject of this paper was a research of physical and mechanical
properties of LVL composed of peeled poplar veneers in core layers and only
outer layers of beech peeled veneers, so as the ...examination of window frame
glue joint strength produced of this material. LVL boards have been hot
pressed in industrial conditions, using appropriate phenol formaldehyde (PP)
adhesive. Samples for corner window frame glue joint strength testing were
glued with PVAc D4 class adhesive. Statistical analysis showed that there
were significant differences both in moisture content and density of LVL
boards regarding their thickness, while in the case of hardness this
difference did not exist. Examinations of LVL glue line shear strength
showed that both phenol formaldehyde (PP) and PVAc D4 class adhesives
fulfilled standard requirements. The results of corner window frame double
tenon glue joint strength produced from combined poplar-beech veneer LVL
indicated that such material could be used to produce window frame corner
joint, strong enough to withstand the additional load, without an increase
of the cross section.
nema
This paper presents the results of a parallel examination on the strength of
oval tenon-mortise joints in two groups of test joints. Joints from group A
were made with both shoulders of tenon, while ...joints from group B were made
without the lower shoulder. Examination of strength was conducted on a chair
joints rear leg-rail. The results of the examination indicated that joints in
group A (oval tenon with the upper and lower shoulder) had a higher average
bending moment capacity in comparison with the joints in group B (oval tenon
without the lower shoulder). However, the significance of difference in
strength between the two groups of joints was not confirmed by the
statistical analysis.
nema
Quality characteristics of spatial furniture Skakic, Dusan; Dzincic, Igor
Glasnik Sumarskog fakulteta - Univerzitet u Beogradu (1987),
2009, Volume:
2009, Issue:
99
Journal Article
Peer reviewed
Open access
The quality of products represents one of the key aims of any modern organized production. In the production practice, it is essential to establish the optimal relationship between quality, ...production economy and delivery deadlines. Furniture quality is evaluated by three levels and they are: basic quality, high quality and especially high quality. The results presented in this paper are based on the sample measurements of chairs and tables during 2007 and 2008 at the Institute for Furniture Quality Control.
Kvalitet proizvoda predstavlja kljuc svake savremeno organizovane proizvodnje. U proizvodnoj praksi neophodno je uspostaviti optimalan odnos izmedju kvaliteta, ekonomicnosti proizvodnje i rokova isporuke. Kvalitet namestaja se vrednuje u tri nivoa kvaliteta: osnovni kvalitet, visoki kvalitet i posebno visoki kvalitet. Rezultati prikazani u okviru ovog rada su zasnovani na merenju pokazatelja kvaliteta stolica i stolova tokom 2007. i 2008. godine u Zavodu za kontrolu kvaliteta namestaja.
Effect of bending pattern on finger joint bending strength Dzincic, Igor; Palija, Tanja; Pavlovic, Dragan
Glasnik Sumarskog fakulteta - Univerzitet u Beogradu (1987),
(2012), 2012-00-00, 20120101, 2012-01-01, Volume:
105, Issue:
105
Journal Article
Peer reviewed
Open access
Limited information is available on end gluing hardwoods in contrast to softwoods, which have been extensively investigated. The objective of this study was to examine the influence of bending patern ...on bending strength of finger jointed beech wood. In structural uses finger jointing is finally the major method to end joint timber for the production of glue-laminated elements. There are no bending strength experimental results for finger-jointed hardwoods for investigations conducted in Serbia. Two finger jointed profiles were studied in accordance with DIN68140. The finger joints were made by side and by face of beam. Length jointed samples were loaded at the side and in the face. The obtained results led to the conclusion that the direction of load, gluing surface and the position of joint influence on the strength of continued longitudinal beams.
Grouping and analysis of chair quality and their basic elements Skakic, D., Univerzitet u Beogradu, Beograd (Serbia). Sumarski fakultet; Dzincic, I., Univerzitet u Beogradu, Beograd (Serbia). Sumarski fakultet
Glasnik Sumarskog fakulteta - Univerzitet u Beogradu (1987),
(2009), 2009-00-00, 2009-01-01, Volume:
2009, Issue:
99
Journal Article
Peer reviewed
Open access
Both scientific experience and the engineering practice indicate that the decision making processes in the course of solving complex designing problems require an analysis of a great number of ...different construction variants. These types of decision-making processes are time consuming and do not always result in the selection of an optimal solution. That is why the methods of numerical optimization are applied in a wide range of technical science to assist in the selection of the best solution. The first step in solving the problem by using the Finite element method is to determine the type of chair earmarked for modelling, and to determine the dimensions of the chair elements.
Comparative investigation of durability of chairs made of beach and Paulownia tomentosa Skakic, D., Univerzitet u Beogradu, Beograd (Serbia). Sumarski fakultet; Dzincic, I., Univerzitet u Beogradu, Beograd (Serbia). Sumarski fakultet
Glasnik Sumarskog fakulteta - Univerzitet u Beogradu (1987),
(2008), 2008-00-00, 2008-01-01, Volume:
2008, Issue:
98
Journal Article
Peer reviewed
Open access
The parallel investigation of chair durability, which has been made in two different wood species (beech and Paulownia tomentosa) has been presented in this paper. Static and dynamic loads has the ...highest values in seating furniture, and that is the reason why chair has been chosen to be representative for testing new species, which could be used in furniture production in Serbia. A shown results indicates on possibility that this species can be used only for production furniture which wont be imposed with heavy loads during exploitation.
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