Drvna Industrija最新文献_第4页

Innovation of Traditional Furniture Surface Decoration Techniques with CNC Laser-Assisted Regression Modeling Production Method 数控激光辅助回归造型生产法对传统家具表面装饰技术的创新

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0055

Cebrail Açιk

引用次数: 0

Utjecaj sadržaja vode u drvu na strukturnu cjelovitost drva pri dinamičkim opterećenjima 树木含水量对动态荷载下树木结构完整性的影响

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0067

Lukas Emmerich, Christian Brischke

{"title":"Utjecaj sadržaja vode u drvu na strukturnu cjelovitost drva pri dinamičkim opterećenjima","authors":"Lukas Emmerich, Christian Brischke","doi":"10.5552/drvind.2023.0067","DOIUrl":"https://doi.org/10.5552/drvind.2023.0067","url":null,"abstract":"The majority of mechanical wood properties are negatively affected by wood moisture within the hygroscopic range, disregarding the stress relaxation of wood at very low moisture contents (MC). In contrast, the structural integrity and thus the brittleness of wood appears to be positively affected by moisture. This study aimed at examining the effect of wood MC on the structural integrity of wood between the oven-dry state and MC well above cell wall saturation (CWS), i.e., at approx. 100 %. For both softwood (Picea abies) and hardwoods (Fagus sylvatica and Quercus robur), the structural integrity was assessed on the basis of the Resistance to Impact Milling (RIM) originating from High-Energy Multiple Impact (HEMI) tests. RIM increased with increasing MC in the hygroscopic range, which might be explained by stress relaxation and ‘gluing effects’ inside the cell wall polymer structure, resulting from a growing network of hydrogen bonds on cell wall level. Increasing MC above CWS caused a slight decrease of RIM in the selected hardwood species, whereas no significant change in RIM was observed when MC varied in the range from CWS to approx. 100 % for the softwood species Norway spruce.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46662301","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Key Attributes of Wooden Toys via an Interval-Valued Spherical Fuzzy Analytic Hierarchy Process 基于区间值球面模糊层次分析法的木制玩具关键属性分析

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0033

Hilal Singer, Şükrü Özşahin

{"title":"Analysis of Key Attributes of Wooden Toys via an Interval-Valued Spherical Fuzzy Analytic Hierarchy Process","authors":"Hilal Singer, Şükrü Özşahin","doi":"10.5552/drvind.2023.0033","DOIUrl":"https://doi.org/10.5552/drvind.2023.0033","url":null,"abstract":"The evaluation of wooden toys is a complicated process and can be overwhelming for decisionmakers in the presence of many conflicting criteria. Hence, this study proposes a fuzzy decision-making model to identify and prioritize the key attributes of wooden toys. For this purpose, the interval-valued spherical fuzzy analytic hierarchy process (AHP), which is one of the fuzzy multicriteria decision-making methods, is applied to obtain weight vectors. Firstly, the wooden toy evaluation problem is formulated as a multicriteria decision-making problem. Then five main criteria and twenty subcriteria are defined with the help of experts. The decision-making team carries out the pairwise comparisons of the criteria. As a result, the priority weights are computed and the ranking order of the criteria is revealed. Additionally, the validity of the obtained results is supported by conducting a comparative analysis between other popular fuzzy methods: interval type-2 fuzzy AHP, interval-valued Pythagorean fuzzy AHP, and spherical fuzzy AHP. According to the modeling results, the most important criteria are “absence of small parts and sharp edges”, “free of harmful wood preservatives and paints”, “workmanship quality”, “contribution to psychomotor development”, and “contribution to cognitive development”. The proposed framework can be adapted to similar decision processes for the evaluation or improvement of toys. Consequently, the findings of this research will help manufacturers, designers, and consumers in making conscious decisions.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47269071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Potential Use of Olive Stone Residues in Particleboard Production 橄榄石残留物在刨花板生产中的潜在用途

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0047

G. Nemli, U. Aras, Hülya Kalaycoglu, Suleyman Kustas

{"title":"Potential Use of Olive Stone Residues in Particleboard Production","authors":"G. Nemli, U. Aras, Hülya Kalaycoglu, Suleyman Kustas","doi":"10.5552/drvind.2023.0047","DOIUrl":"https://doi.org/10.5552/drvind.2023.0047","url":null,"abstract":"In this study, the effect of using olive stone residues (OSR) on some properties of particleboard was investigated. For this purpose, particle boards were manufactured from particles of white poplar (Populus Alba L.), which were partially substituted with OSR particles in amounts of 10 %, 20 % and 30 %. In addition, boards containing 30 % OSR, which had previously been chemically modified with NaOH solution, were produced. Phenol formaldehyde adhesive was used in the production of the boards. Chemical properties of wood and OSR particles (pH, alcohol benzene solubility, amount of ash), physico-mechanical properties (density, moisture content thickness swelling, modulus of rupture, modulus of elasticity and internal bond strength) and formaldehyde emission values of boards were determined. Water absorption and thickness swelling values were generally decreased with the increase in the use of OSR. When the effect of OSR usage on bending strength, modulus of elasticity, and perpendicular tensile strength values were examined, a decrease in the values was observed except for the 10 % OSR usage ratio. As a result of the application of alkali pretreatment, an increase in thickness swelling values was observed, while the values of mechanical properties increased. Scanning electron microscopy (SEM) analysis results showed more spaces between particles with an increasing OSR usage ratio. Formaldehyde emission values decreased with the increasing amount of OSR. Formaldehyde emission values increased slightly with the application of alkaline pretreatment. Based on the findings of this study, we can conclude that OSR can be used at particularly low ratio in particleboard production.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43806357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Research of Carbon Biosensors for Application in Seating Furniture 碳生物传感器在座椅家具中的应用研究

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0089

Z. Vlaović, Vid Palalić, D. Domljan

{"title":"Research of Carbon Biosensors for Application in Seating Furniture","authors":"Z. Vlaović, Vid Palalić, D. Domljan","doi":"10.5552/drvind.2023.0089","DOIUrl":"https://doi.org/10.5552/drvind.2023.0089","url":null,"abstract":"The paper provides a limited overview of existing pressure sensors based on composite technology from carbonized biomass and synthetic materials which could be implemented in seating furniture. Carbon-based pressure sensors have proven to be good for pressure measurement that works on the principle of the piezoresistive effect. Research on materials based on carbonized components of biological origin encourages the development of composite sensors made of different materials, which have different negative and positive properties. Despite the great potential, such sensors are still not sufficiently researched and there is a lot of space for their improvement. Today’s rapid development of technologies and frequent work at the computer leads to excessive sitting while working, which is a big problem for human health. Chairs with sensors could be increasingly used in the future, and in combination with the Internet of Things could be used to monitor the sitting habits and health of users. Sensors implemented in seating furniture are one way of monitoring sitting habits, warning users of inappropriate body positions when sitting, and mitigating the negative consequences of long-term improper sitting. The paper analyses research that includes the production and application of sensors made of carbonized bio-materials, which could be used in seating furniture with the aim of monitoring the way of sitting based on the principle of pressure detection. So far, the results have not provided the requested answers. However, they provided an overview of technologies that, with additional research, likely have the potential to be incorporated into seating furniture.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44598985","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Weathering Performance of Oriental Beech (Fagus orientalis L.) Wood Impregnated with Glycerol and Glyoxal 东方山毛榉(Fagus orientalis L.)的风化性能用甘油和乙二醛浸渍的木材

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0054

Ç. Altay

{"title":"Weathering Performance of Oriental Beech (Fagus orientalis L.) Wood Impregnated with Glycerol and Glyoxal","authors":"Ç. Altay","doi":"10.5552/drvind.2023.0054","DOIUrl":"https://doi.org/10.5552/drvind.2023.0054","url":null,"abstract":"This study aimed to improve some surface properties such as color, gloss, and surface roughness changes of Oriental beech (Fagus orientalis L.) wood impregnated with some water repellent chemicals such as glycerol (GR) and glyoxal (GX) after weathering. Oriental beech wood specimens were impregnated with a 4 % aqueous solution of GR, GX, and a mixture of GR and GX (1:1; weight : weight) (GR+GX) and then exposed to weathering in Muğla Province in Turkey. Results showed that [delta]L* values of all wood specimens were decreased after weathering. Moreover, the decreases in the control specimen were higher than in the impregnated wood specimens. Oriental beech wood specimens showed a greenish and yellowish tendency, giving -[delta]a* and +[delta]b* values, respectively. Total color changes of GR impregnated Oriental beech was the lowest after weathering. The gloss of all Oriental beech test specimens decreased after weathering. The control specimen gave the lowest value in all three surface roughness parameters (Ra, Rz, and Rq) after weathering. Among the impregnated specimens, the groups impregnated with GR had, in general, the highest value in all three roughness degrees and showed the most negative results in surface roughness.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42232397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Obojenje lakova za namještaj s biljnim bojilima i određivanje njihove otpornosti na vremenske utjecaje

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-06-20 DOI: 10.5552/drvind.2023.0050

Osman Goktas, Yasar Tahsin Bozkaya, Mehmet Yeniocak

{"title":"Obojenje lakova za namještaj s biljnim bojilima i određivanje njihove otpornosti na vremenske utjecaje","authors":"Osman Goktas, Yasar Tahsin Bozkaya, Mehmet Yeniocak","doi":"10.5552/drvind.2023.0050","DOIUrl":"https://doi.org/10.5552/drvind.2023.0050","url":null,"abstract":"The main goal of the study is to produce eco-friendly furniture dyes by using bio-colorants and to determine the color stability of these dyes in outdoor conditions. In this regard, dye extracts obtained from red beet (Beta vulgaris), safflower (Carthamus tinctorius L.), and purple cabbage (Brassica oleracea), as a bio-colorant source, were applied to MDF test panels by mixing with water-based synthetic lacquer coatings. Also, three different synthetic dyes were applied to MDF test panels in order to compare the results with eco-friendly natural dyes. Natural dyes were mixed with metal and natural mordants such as iron sulfate, aluminum sulfate and vinegar. Lacquer coated test panels, coated with natural and synthetic dyes, were exposed to outdoor conditions for 50 days in Denizli/Turkey in order to assess the change in color. As a result, the maximum color stability occurred in the test panels lacquer coated with synthetic black dye, while the minimum color stability occurred in the test panels lacquer coated with synthetic light blue dye. It was determined that the thickness of the color coating layer applied to test panels increases color stability. It was also observed that the color stability performance of natural dyes is as good as that of synthetic dyes.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42775156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plywood Cantilever Deflection 胶合板悬臂挠度

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-03-25 DOI: 10.5552/drvind.2023.0053

Alma Žiga, J. Kačmarčik

引用次数: 0

Utjecaj različitih vrsta modifikacije na izvlačnu silu rotacijski zavarenih moždanika 不同修饰对旋转障碍提取力的影响

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-03-25 DOI: 10.5552/drvind.2023.0087

Ivica Župčić, Igor Đukić, Matija Jug, Mario Jurišić, Marin Hasan

引用次数: 0

Sinteza fenolne smole ojačane nanočesticama TiO2 i njezin utjecaj na gorivost lamelirane drvne građe (LVL) 纳米TiO2增强苯酚盐的合成及其对木材燃料的影响

IF 1.1 4区农林科学

Drvna Industrija Pub Date : 2023-03-25 DOI: 10.5552/drvind.2023.0006

Günay Özbay, Musa Atar, Ayhan Ozcifci

{"title":"Sinteza fenolne smole ojačane nanočesticama TiO2 i njezin utjecaj na gorivost lamelirane drvne građe (LVL)","authors":"Günay Özbay, Musa Atar, Ayhan Ozcifci","doi":"10.5552/drvind.2023.0006","DOIUrl":"https://doi.org/10.5552/drvind.2023.0006","url":null,"abstract":"In this study, phenol-formaldehyde (PF) resin has been modified with titanium dioxide nanoparticles (nano-TiO2) at a varying ratio from 0.05 wt.% to 1.5 wt.% to enhance the thermal properties and combustion performance of the resins. The effect of the nano-TiO2 modification on the properties (chemical or thermal) of the resins was determined by Fourier to transform infrared (FT-IR) and thermal analysis (TGA) techniques. In addition, the combustion performance of laminated veneer lumber (LVL) samples bonded with the PF resin modified with nano-TiO2 was tested. The result of the FT-IR analysis indicated that the modified PF resins had match peaks to the reference PF resin. These similarities of the peaks supported that the modified PF resins were successfully synthesise with phenol, formaldehyde, and nano-TiO2. The PF resins modified by nano-TiO2 demonstrated better thermal stability than the reference resin. The nano-TiO2 modified PF resin exhibited a favourable influence on the combustion characteristics of LVL. In consequence, PF resin modified with nano-TiO2 could be used as a combustion retardant adhesive in the wood industry.","PeriodicalId":11427,"journal":{"name":"Drvna Industrija","volume":null,"pages":null},"PeriodicalIF":1.1,"publicationDate":"2023-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43670841","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0