Sürdürülebilir Kalkınma Amaçları

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• MakaleAçık Erişim2024/r/gumushane/14058
  Noise as a physical risk factor in furniture industry machines

  Yasar, Sekip Sadiye; Komut, Osman; Yasar, Mehmet; Fidan, Muhammed Said

  This study aimed to determine the risk level of noise, which is an important physical risk, in small and medium-sized furniture industry enterprises. The noise levels of the circular sawing machines, edge banding machines, and mitre cutting machines, which are among the main processing machines of the sector, were measured. The study was carried out in 32 furniture businesses. The possible risks of noise on the operators of the machines in question and other employees were evaluated. Noise level measurements were made with the help of TESTO 815 measuring device. Dunnett’s T3 test was used to detect differences in noise levels for machine operators and other employees. It was determined that the edge banding machine does not pose an occupational health and safety risk in terms of noise risk factors. However, the mitre cutting machine and the circular sawing machine pose a risk for the machine operator in active production by creating noise above the established exposure limit value. The mitre cutting machine carries the same risk for the machine operator when it is in operation but in passive production. The results revealed the need for personal protective equipment for machine operators for mitre cutting and circular sawing machine.

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• MakaleAçık Erişim2024/r/gumushane/11481
  Effect of Nano Particulate Preservation Materials on the Combustion Temperatures of the Wood

  Yasar, Sekip Sadiye; Cicek, Eyup; Yasar, Mehmet

  It is acknowledged that boron, ammonium, and nitrogenous compounds, which are used today as fire retardants, cause an increase in the hygroscopicity of wood materials. In this study, Scots pine (Pinus sylvestris L.), Anatolian chestnut (Castanea sativa Mill.), and Eastern spruce (Picea orientalis Link) woods were impregnated with 1.5% nano-sized hexagonal boron nitride (NB) according to ASTM D1413-76 (1976) standards. Flame-induced combustion (FIC), self-combustion (SC), and glowing combustion (GC) temperatures were determined. The highest retention amount was measured in spruce and the lowest was in chestnut among the wood samples taken for testing and measurement. When compared with the control samples, NB application caused an increase in SC and FIC temperatures (at higher rates). According to the glowing combustion temperature control samples, an increase was observed in chestnut and spruce and a decrease was observed in Scots pine among the samples applied with NB.

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• MakaleAçık Erişim2023/r/gumushane/20275
  Ağaç işleri ve mobilya sektörlerinde iş güvenliği kültürüne yönelik bir değerlendirme: Gümüşhane ilinde bir durum çalışması

  Yaşar, Mehmet; Yasar, Sekip Sadiye; Fidan, Muhammed Said; Komut, Osman

  Türkiye’de mobilya endüstrisi sektörü küçük ve orta ölçekli işletme yapısıyla ülke genelinde önemli bir istihdam alanı sağlamaktadır. Diğer yandan sektör, iş sağlığı ve güvenliği hususunda olumsuzlukların fazlasıyla yaşandığı faaliyet alanları arasında yer almaktadır. Bu çalışmanın amacı, sanayi bölgelerinden uzak küçük ve orta ölçekli ağaç işleri ve mobilya endüstrisi işletmelerinde iş sağlığı ve güvenliği koşullarının değerlendirilmesidir. Bu kapsamda toplam 54 çalışan ile yüz yüze görüşme esasına dayalı anket uygulaması gerçekleştirilmiştir. Çalışmada 5’li likert ölçeğinde hazırlanmış önermeler ile işyerlerinin durumu ve çalışanların konuya ilişkin görüşleri tespit edilmeye çalışılmıştır. Araştırmada, elde edilen veriler üzerinde oransal karşılaştırmaların yanı sıra, iş kazasına maruz kalma değişkenine göre iş güvenliği faktörlerinin analizinde Mann Witney U testi kullanılmıştır. Elde edilen bulgular, katılımcı işletmelerin %67 oranında faaliyet süresinin 5 yılın altında olduğu belirlenmiştir. Ayrıca kişisel koruyucu donanım kullanımı ve periyodik sağlık muayenelerde eksikliklerin olduğu tespit edilmiştir. Katılımcıların iş kazası maruziyeti %72 olarak belirlenirken, el ve parmakların ağırlıklı yaralanan uzuvlar olduğu anlaşılmıştır. Diğer yandan iş kazası maruziyetinin iş güvenliği faktörlerine yönelik görüşlere ilişkin istatistiksel düzeyde anlamlı farklılıklar (p<0,05) oluşturduğu tespit edilmiştir. Sonuç olarak, küçük ve orta ölçekli ağaç işleri ve mobilya işletmelerinde iş sağlığı ve güvenliği kültürünün yeterince gelişmediği söylenebilir.

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• MakaleAçık Erişim2020/r/gumushane/17826
  Occupational health and safety awareness in wood, wood products and mushroom production sector in Turkey

  Yaşar, Mehmet; Yasar, Sekip Sadiye; Komut, Osman

  The forest industry is one of the sectors where occupational accidents are the most common. In this study, it is aimed to reveal the differences in opinions of personnel in enterprises, which fall into Turkish wood, wood products and mushroom production group, concerning occupational health and safety. Within this framework, a questionnaire application was conducted based on face to face meeting in a total of 68 enterprises in Erzincan province. In the questionnaire, the 5-point likert rating scale was used in determination of agreement level to scale items containing 9 different opinions concerning occupational health and safety issue underlying demographic characteristics of personnel and features of enterprises. As the result of the study, it was detected that machinery maintenance frequencies are too far, necessary personal protective equipment is not supplied in time and basic occupational health and safety principle implementation has deficiencies. Besides, statistically significant differences (p<0.05) were identified between opinions of employees in relation to variances as age, marital status, department worked, total time of employment in the enterprise, machinery maintenance frequency that is applied, workplace change intervals and exposure to occupational accidents.

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• MakaleAçık Erişim2020/r/gumushane/17720
  Determination of Bending Moment Capacity on “L” Type Furniture Corner Assembly Elements Produced by 3D Printers

  Yildirim, Mehmet Nuri; Yasar, Sekip Sadiye; Karaman, Abdurrahman

  In this study, determining the impact of biscuit-type joining elements produced in 3-D printers on the bending moment resistance was aimed in “L” type corner joining. For this purpose, wood-based material 18 mm thick MDF-lam, woodbased biscuit, Acrylonitrile Butadiene Styrene (ABS) and Polylactic Acid (PLA) produced with 3-D printer, biscuit joining elements obtained from thermoplastic based filaments are used. Test samples, according to (ASTM D 1037-06a, 2006) standards were subjected to; diagonal tensile and compression moment tests. According to the experiment results, the tensile moment values was determined to be higher than the compression moment values. The wood-based biscuit joining element has the highest values, the wood-based biscuit joining element was followed by the biscuit assembly elements obtained respectively from PLA and ABS-based materials produced in 3-D printer in the compression test; while the wood-based biscuit joining element has the highest values in the tensile test, this was followed by ABS and PLA biscuit joining elements. In the tensile test, it was observed that the biscuit joining elements produced with 3-D printer technology gave close values to the wood based biscuit joining element and that these elements can be used as an alternative to the wood-based biscuit element for the corner joining of the furniture elements.

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• MakaleAçık Erişim2020/r/gumushane/14948
  A study on noise levels of machinery used in lumber industry enterprises

  Fidan, Muhammed Said; Yasar, Sekip Sadiye; Komut, Osman; Yasar, Mehmet

  The aim of this study is to help to create a healthier environment by measuring the noise levels in the furniture and lumber sectors of forest products industry. In this study, noise measurement for approximately 3 min has been conducted in 4 measurement spots in the side of the machinery, in the factory entrance and in full and empty state for each machinery; from 3 different chosen spots in enterprises producing lumber. Measurements have been recorded as 720, from each machine as 36 measurements, with the condition to be recorded every 5 sec for 3 min. For this purpose, noise measurements have been carried out in 17 workplaces producing lumber and results have been compared statistically. As a result of the obtained findings, it is understood that the noise levels of thickness machinery don't exceed the value for the upper limit stated in the regulations. However, vertical wood band sawmill and band saw machines have been observed to go over this limit. Besides, some factors of planning and multi slitting machine don't exceed this limit, some of them exceed. As a result, it has been conducted that when noise levels of machinery used in the lumber industry enterprises exceed the upper limit stated in the regulations, they can pose a serious threat to human health.

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• MakaleAçık Erişim2019/r/gumushane/17809
  Determination of modulus of elasticity and bending strength of wood material impregnated with nanoparticle silicon dioxide (SiO2)

  Yildirim, Mehmet Nuri; Yasar, Sekip Sadiye; Karaman, Abdurrahman

  The purpose of this study is to determine the effects of the nano-particulate silicon dioxide (SiO2) material on the bending strength and modulus of elasticity in bending of some wood species. Oriental beech (Fagus orientalis L.) and sessile oak (Quercus petrea L.) woods species which are commonly used in the furniture industry were used in this study. Impregnation was carried out with the preparation of SiO2 at concentrations of 1% and 3% according to ASTM-D 1413-76 (1976) standards. According to the results, while solution concentration was increasing in both wood species, total retention (kg/m3) and percentage retention (%) values increased; air dry density (12%), bending strength and modulus of elasticity in bending decreased. The maximum mean values of bending strength and modulus of elasticity was in control samples of oriental beech and the minimum were in sessile oak wood with 3% concentration. These results can be related to the fact that the higher density of oriental beech wood (0.630-0.685 g/cm³). In both species of wood, impregnation with SiO2 resulted loss of about 3-5% in bending strength and 0.6-9% in modulus of elasticity.

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• MakaleYalnız künye2019/r/gumushane/15168
  Effects of wood preservatives on the combustion process and combustion quality of wood

  Sadiye Yasar, S.

  This study examines the combustion properties of Scots pine (Pinus sylvestris L.) and Oriental beech (Fagus orientalis L.) in 3 stages (CWF, SC and EC) according to ASTM E 160-50 (1975). Wood samples were impregnated with Tanalith-E (T) and Wolmanit-CB (WC) and then were varnished with Synthetic (St) and water based (wb) varnishes. When the combustion was completed, the weight loss, combustion temperatures, illuminance values, total time of combustion, and demolition time were measured. As the result, illuminance value of Oriental beech wood decreased, while the smoke density increased. Scots pine was later destroyed in the combustion process. Areas with a risk of fire are advised to use pine wood instead of beech. Wolmanit-CB and synthetic varnish reduced the temperature and illuminance values. Oriental beech, Tanalith-E, and synthetic varnish resulted in the highest temperatures for all combustion stages. This triple interaction increased total combustion time values by more than 90% when compared with the control samples.

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• MakaleAçık Erişim2018/r/gumushane/16767
  The Effects of Wood Preservatives on the Combustion Characteristics of Sessile Oak (Quercus Petreae L.)

  Yasar, Sekip Sadiye; Atar, Musa

  This study carried out to determine the combustion properties of the sessile oak wood (Quercus petraea L.) which impregnated with wood preservative and subjected to surface treatments. For this purpose, the samples, which were prepared from sessile oak wood according to ASTM-E 160-50 combustion principles, impregnated with wolmanit-CB (WC) and tanalith-E (T) in accordance with ASTM-D 1413-76 and then synthetic (St) and Water-based (wb) varnishes were applied according to ASTM-D 3023. The combustion test was carried out in 3 stages, combustion with flame (CWF), self-combustion without flame source (CWOF) and ember combustion stage (ECP). It was aimed to determine the combustion temperature values in CWF, CWOF and ECP stage, weight loss, total combustion time and demolition time. As a result, impregnation applications have increased the total combustion time to between 15-18% and reduced the demolition period. The exact opposite results were obtained for the varnish types, the total combustion time was reduced by 19-21% and the demolition time increased by 10-22%. In CWF stage, the highest temperature was obtained in water-based varnished samples (490 degrees C), the lowest in non-varnished samples (458 degrees C); in CWOF stage the highest temperature in water-based varnished samples (572 degrees C), the lowest in synthetic varnished samples (544 degrees C); and in ECP stage the highest temperature in non-varnished samples (306.5 degrees C), the lowest in the samples with the synthetic varnished (262.7 degrees C).

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• MakaleYalnız künye2018/r/gumushane/18459
  Indication of the Screw Withdrawal Strength of Scots pine (Pinus sylvestris L.) Wood Impregnated with Quechua and Different Boron Compounds

  Şen, Selim; Fidan, M. Said; Alkan, Elif; Yaşar, Ş. Şadiye

  Wooden materials are conducted to prevent damages (biotic, abiotic pests, fire, etc.) from the environment and are used to extend the usage life of wooden materials. Due to this reason, this study is determined different screw withdrawal strength properties of wooden material impregnated with quechua, borax and boric acid. The scots pine (Pinus sylvestris L.) test specimens are prepared with borax, boric acid, borax + boric acid, from borax compounds which have a great potential in Turkey, and with quechua, one of the natural impregnation substances. Then these samples are impregnated with three different (1%, 3%, 5%) solution concentrations according to ASTM 1413-76 standards. After impregnation, screw withdrawal strength samples are determined compared with control samples. According to the test results; the highest screw withdrawal strength values are determined in solution concentrations with %5 concentration. The highest boron compound values are determined in solution concentrations with boric acid+borax compounds. In this case, the boric acid at a concentration of 1% can be preferred in solid wood applications such as in places which are not exposed to rain water.

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