European Journal of Wood and Wood Products最新文献_第8页

Compressive behavior of wood contact with mortar and epoxy resin adhesives

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-05-13 DOI: 10.1007/s00107-025-02221-3

Shun Kosugi, Marina Totsuka, Hiroki Nakashima, Masakazu Ikeda, Kenji Aoki

{"title":"Compressive behavior of wood contact with mortar and epoxy resin adhesives","authors":"Shun Kosugi, Marina Totsuka, Hiroki Nakashima, Masakazu Ikeda, Kenji Aoki","doi":"10.1007/s00107-025-02221-3","DOIUrl":"10.1007/s00107-025-02221-3","url":null,"abstract":"<div><p>In recent years, researchers and engineers have developed a wide range of connection systems between wood and other materials, such as concrete and steel. However, the mechanical behavior of the surfaces where wood meets these materials is yet to be understood. In wood, low-stiffness areas called damage zones form near end grains, when compressed parallel to the grain. These low-stiffness areas may come in contact with various materials; therefore, understanding the behavior of the damage zones with various materials is important. This paper describes the results and analysis of experimental tests conducted on 130 specimens compressed parallel to the grain, to examine the compression behavior when the low-stiffness areas of glulam (Japanese cedar and Japanese larch) come in contact with mortar, epoxy adhesives, and steel. Compared with specimens joined with steels, the specimens joined with mortar had lower strength and stiffness, whereas those with epoxy structural adhesives had higher or almost equivalent strength and stiffness. Additionally, the specimens joined with mortar had the most significant strain in the damage zone, followed by those with steel loading plates and those with epoxy structural adhesives. These results suggest that using mortar as a contact material has a detrimental effect on the strength and stiffness of glulam. In contrast, the use of epoxy structural adhesives can improve the stiffness of glulam by mitigating the effects of the damage zone.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02221-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944294","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bayesian modeling of finger joints’ tensile and bending properties considering censored data 考虑截尾数据的手指关节拉伸和弯曲特性贝叶斯建模

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-05-13 DOI: 10.1007/s00107-025-02265-5

Farid Vafadar, Steven Collins, Gerhard Fink

{"title":"Bayesian modeling of finger joints’ tensile and bending properties considering censored data","authors":"Farid Vafadar, Steven Collins, Gerhard Fink","doi":"10.1007/s00107-025-02265-5","DOIUrl":"10.1007/s00107-025-02265-5","url":null,"abstract":"<div><p>Finger joints (FJs) are longitudinal interlocking connections between timber boards commonly used in engineered wood products such as glued laminated timber beams. The mechanical properties of FJs, particularly tensile strength, are vital for the performance of such products; however, practical constraints often lead to testing FJs primarily in bending rather than tension. Therefore, it is crucial to investigate the relationship between tensile and bending strengths. The present study investigates this relationship using paired FJs. It further evaluates the predictability of FJ tensile and bending properties based on the dynamic modulus of elasticity of the connected timber boards. Tensile and bending tests were conducted, and censored data resulting from failures outside the FJs were handled using a hierarchical Bayesian linear regression method. The study proposes models to estimate FJ tensile strength from bending strength and to predict tensile and bending properties based on the dynamic modulus of elasticity of the connected timber boards. Model predictions are compared with experimental outcomes, indicating the effective integration of censored data. Results further show that excluding censored data underestimates FJ tensile and bending strength. The proposed Bayesian modeling procedure offers a means to connect failure modes with data types and appropriately address censored data. Such models can help to enhance quality control/production efficiency and the structural reliability of engineered wood products.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02265-5.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Influences of extractives on absorption and desorption of many sorbents in two tropical woods 萃取物对两种热带木材中许多吸附剂吸收和解吸的影响

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-05-13 DOI: 10.1007/s00107-025-02206-2

Godwin Fonyuy Banyuy, Joseph Zobo Mfomo, Achille Bernard Biwolé, Jean Jalin Eyinga Biwôlé, Evariste Fongnzossie Fedoung, Flavian Emmanuel Sapnken, Jean Gaston Tamba

{"title":"Influences of extractives on absorption and desorption of many sorbents in two tropical woods","authors":"Godwin Fonyuy Banyuy, Joseph Zobo Mfomo, Achille Bernard Biwolé, Jean Jalin Eyinga Biwôlé, Evariste Fongnzossie Fedoung, Flavian Emmanuel Sapnken, Jean Gaston Tamba","doi":"10.1007/s00107-025-02206-2","DOIUrl":"10.1007/s00107-025-02206-2","url":null,"abstract":"<div><p>Understanding the influence of extractives on water diffusion properties is crucial for optimizing drying processes and enhancing the performance of tropical wood species in various applications. This study investigates the hygroscopic behavior of two commercially valuable African tropical timbers, Tali (<i>Erythrophleum suaveolens</i> Brenan) and Bilinga (<i>Nauclea diderrichii</i> Merr.), focusing on the role of their extractive contents on water transport during absorption and desorption. Wood samples treated with six solvents and native wood were subjected to diffusion experiments at 30 °C and 82% relative humidity for five days. Applying the Fick diffusion law, an A polynomial type model best fitted the experimental data with significant variations observed in the average values of absorption, surface emission, diffusion, and diffusion resistance coefficients depending on the wood type and extractive content. Notably, the longitudinal direction exhibited greater moisture exchange compared to the tangential and radial directions. Moreover, water absorption, emission, and diffusion coefficients decreased with increase in wood density, while native and treated Bilinga woods displayed higher average values in all directions compared to Tali. Interestingly, the removal of extractives via acetone treatment enhanced water diffusion, highlighting the key role of specific extractive components. These findings provide valuable insights into the hygroscopic behavior of Tali and Bilinga, contributing to the development of efficient storage and improved utilization of these versatile tropical wood species.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143944296","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Impact of location and forest habitat type on values of selected parameters and structural indices of wood fibres of silver birch (Betula pendula Roth.) in Poland 地点和森林生境类型对波兰白桦木纤维选择参数值和结构指数的影响

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-05-07 DOI: 10.1007/s00107-025-02248-6

Hubert Lachowicz, Rafał Wojtan, Patrycja Kulak

{"title":"Impact of location and forest habitat type on values of selected parameters and structural indices of wood fibres of silver birch (Betula pendula Roth.) in Poland","authors":"Hubert Lachowicz, Rafał Wojtan, Patrycja Kulak","doi":"10.1007/s00107-025-02248-6","DOIUrl":"10.1007/s00107-025-02248-6","url":null,"abstract":"<div><p>The aim of this study was to examine the variation of selected parameters and structural indicators of the <i>Betula pendula</i> Roth. fibres depending on the geographical location of the forest stand and forest habitat type. It is the most extensive study to date in Poland concerning the variability of silver birch fibre structure. The research was carried out in 16 forest districts on three habitat types, where silver birch stands predominate in respect of coverage area and merchantable volume. Analysis was performed on 69 samples from 414 trees aged 30, 50, and 70. The following parameters and structural indicators characterise silver birch fibres: length 1316 μm, width 24.20 μm, lumen 11.91 μm, wall thickness 6.14 μm, slenderness ratio 55.49, Runkel ratio 1.14, rigidity index 25.63, Mühlsteph’s index 0.754, flexibility coefficient 0.487, solids index 0.35. The results showed that location had a significant effect on all the parameters studied. For two locations in the south–western and north–eastern regions of Poland where fibres from three habitat types were studied, it was found that fibre width and rigidity index were influenced only by location; fibre length, lumen width, Runkel ratio, Mühlsteph’s index, and flexibility coefficient were influenced only by habitat; both location and habitat influenced wall thickness, slenderness ratio, and solids index. The parameters and structural indicators of birch fibres do not exhibit regular dependences on habitat richness. Birch fibres are suitable for a wide range of applications, especially in the implementation of innovative ways of using wood.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02248-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143919033","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of the strength of edge-glued panels (EGP) manufactured with tropical woods from Brazil 用巴西热带木材制造的边缘胶合板（EGP）的强度评价

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-05-05 DOI: 10.1007/s00107-025-02264-6

Roberto Daniel de Araújo, Cristiano Souza do Nascimento, Claudete Catanhede do Nascimento, Joaquim dos Santos, Estevão Vicente Cavalcante Monteiro de Paula

{"title":"Evaluation of the strength of edge-glued panels (EGP) manufactured with tropical woods from Brazil","authors":"Roberto Daniel de Araújo, Cristiano Souza do Nascimento, Claudete Catanhede do Nascimento, Joaquim dos Santos, Estevão Vicente Cavalcante Monteiro de Paula","doi":"10.1007/s00107-025-02264-6","DOIUrl":"10.1007/s00107-025-02264-6","url":null,"abstract":"<div><p>The study investigated the mechanical performance of edge-glued panels (EGP) fabricated from Amazonian tropical wood species, emphasizing their potential application in value-added wood products. Five native species from sustainably managed areas were selected to evaluate their suitability for industrial use. The panels were manufactured using two types of adhesives, polyvinyl acetate (PVA) and emulsion polymer isocyanate (EPI), and subjected to testing for static flexural, tensile, and shear strength under dry and humid conditions. The results revealed significant variation in panel performance depending on the wood species and adhesive employed. The EPI adhesive demonstrated superior bonding efficiency, particularly in high-humidity environments, underscoring its potential for application in challenging conditions. Panels constructed with <i>Micrandropsis scleroxylon</i> (Piãozinho) presented the highest rupture and tensile strength under dry conditions, indicating a strong mechanical performance. Meanwhile, <i>Hymenolobium pulcherrimum</i> (Angelim-vermelho) demonstrated consistently strong performance across both adhesives, reinforcing its versatility for diverse manufacturing needs. This research underscores the untapped potential of lesser-known Amazonian wood species, traditionally underutilized in industrial processes, to produce high-quality engineered wood products. The findings highlight the feasibility of incorporating these species into the manufacture of EGP panels, offering a sustainable pathway to enhance the economic value of tropical timber resources while supporting ecological conservation initiatives. Furthermore, integrating these materials into the wood industry aligns with global efforts to promote sustainable forest management and biodiversity preservation, reinforcing the critical role of forest science in balancing development and environmental stewardship.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143908752","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Optimization of semi-wet hot-pressing conditions for Salix psammophila-based mycelium-bound boards via response surface methodology 响应面法优化沙柳菌丝结合板的半湿热压条件

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-29 DOI: 10.1007/s00107-025-02259-3

Xiaowen Song, Shuoye Chen, Ziyi Cai, Jianxin Wu, Yanfeng Zhang, Risu Na, He Lv, Cong He, Tingting Wu, Xiulun Wang

{"title":"Optimization of semi-wet hot-pressing conditions for Salix psammophila-based mycelium-bound boards via response surface methodology","authors":"Xiaowen Song, Shuoye Chen, Ziyi Cai, Jianxin Wu, Yanfeng Zhang, Risu Na, He Lv, Cong He, Tingting Wu, Xiulun Wang","doi":"10.1007/s00107-025-02259-3","DOIUrl":"10.1007/s00107-025-02259-3","url":null,"abstract":"<div><p>Conventional indoor wood-based materials often rely on formaldehyde-based adhesives, which pose environmental and health risks. In this study, eco-friendly mycelium-bound boards were fabricated through semi-wet hot-pressing technology using <i>Salix psammophila</i> as the substrate and fungal mycelium as a bio-based adhesive. The interfacial adhesion, chemical interactions, and thermal stability of the composites were systematically investigated by scanning electron microscopy (SEM), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetric analysis (TGA). A Box-Behnken response surface design was employed to optimize the effects of the hot-pressing parameters on the physical-mechanical properties. The optimal hot-pressing parameters (within the tested range) were determined to maximize the rupture’s modulus and minimize water absorption and thickness swelling rates, yielding an applied pressure of 10 MPa, a temperature of 194 ℃, and a time of 31 min. Under these conditions, the mycelium-bound boards exhibited a modulus of rupture (MOR) of 37.64 MPa, a water absorption (WA) of 48.1%, and a thickness swelling (TS) of 23.01%. The hot-pressing process significantly enhanced the overall board performance, with pressure and temperature exhibiting the most pronounced effects. Furthermore, thermogravimetric analysis revealed high thermal stability in the boards. This study provides valuable insights into effectively utilizing agricultural, forestry, and pastoral residues for improving mycelium-bound boards performance. In conclusion, mycelium-bound boards exhibit the potential to be used as materials for construction, furniture, and household items due to their environmentally friendly nature.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Screening of endophytic fungi biocontrols against sapstain fungus (Lasiodiplodia theobromae) in rubberwood 橡胶木内生真菌生防皂化菌的筛选

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-26 DOI: 10.1007/s00107-025-02257-5

Susu Yang, Chunwang Yang, Chaoran Wang, Yushan Yang, Jian Qiu, Lei Qin

{"title":"Screening of endophytic fungi biocontrols against sapstain fungus (Lasiodiplodia theobromae) in rubberwood","authors":"Susu Yang, Chunwang Yang, Chaoran Wang, Yushan Yang, Jian Qiu, Lei Qin","doi":"10.1007/s00107-025-02257-5","DOIUrl":"10.1007/s00107-025-02257-5","url":null,"abstract":"<div><p>Rubber trees are often contaminated by sapstain fungus after felling, which seriously affects the appearance of the surface and causes economic losses. In order to combat the discoloration problem that occurs in rubberwood, this study isolated and screened a variety of endophytic fungi from rubberwood against sapstain fungus <i>Lasiodiplodia theobromae</i>, which is widely present in rubberwood. The antagonism experiment initially screened two strains that showed significant inhibitory effects against <i>Lasiodiplodia theobromae</i> on plates. After preparing fungal suspensions of these two strains and applying them to rubber wood, the BH-3 strain was identified as the most effective biocontrol agent based on the rate of mass loss and color difference analysis. This strain was subsequently identified as <i>Trichoderma reesei</i>. FTIR, XRD, TG and SEM analysis were carried out on wood chips before and after treatment and wood chips before and after infection. The results showed that treated wood chips could well resist sapstain fungus infestation and had no significant effect on the thermal stability, MOR and MOE of wood chips. No discoloration was observed in treated wood chips after 4 weeks of coexistence with the sapstain fungus in the presence of <i>Trichoderma reesei</i> suspension. The wood chips did not exhibit any color change, the main chemical components (cellulose, hemicellulose, and lignin) were only slightly degraded, and the microstructure remained intact. Therefore, this study shows that <i>Trichoderma reesei</i> can be widely used as an environmentally friendly, economical and efficient biocontrol agent against sapstain fungus.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877747","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Surface roughness of thermally modified and unmodified selected wood species after sanding 经砂光处理后的热改性和未改性选定木材的表面粗糙度

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-26 DOI: 10.1007/s00107-025-02260-w

Lukáš Adamčík, Valentina Lo Giudice, Luigi Todaro, Michal Dudiak, Richard Kminiak

引用次数: 0

Digital image correlation (DIC) application to evaluate bending performance of timber beams strengthened with NSM-CFRP plate 应用数字图像相关技术评价NSM-CFRP板加固木梁的抗弯性能

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-26 DOI: 10.1007/s00107-025-02258-4

Annisa Prita Melinda, Shogo Higuchi, Fengky Satria Yoresta, Yosuke Yamazaki, Phan Viet Nhut, Pingkan Nuryanti, Yuji Takiuchi, Yukihiro Matsumoto

{"title":"Digital image correlation (DIC) application to evaluate bending performance of timber beams strengthened with NSM-CFRP plate","authors":"Annisa Prita Melinda, Shogo Higuchi, Fengky Satria Yoresta, Yosuke Yamazaki, Phan Viet Nhut, Pingkan Nuryanti, Yuji Takiuchi, Yukihiro Matsumoto","doi":"10.1007/s00107-025-02258-4","DOIUrl":"10.1007/s00107-025-02258-4","url":null,"abstract":"<div><p>This study presents the use of open-source digital image correlation (DIC), an advanced non-contact optical technique for measuring strain and deformation, to evaluate the bending performance of strengthened laminated veneer lumber (LVL) timber beams under a four-point bending test. The beams were strengthened with a carbon fibre-reinforced polymer (CFRP) plate mounted near the compression side, known as near-surface mounted (NSM). The effect of the reinforcement ratio on the compression zone was experimentally investigated for the strengthened beams. Open-source Ncorr software was employed to track surface patterns and measure full-field displacement and strain. This study demonstrated that DIC techniques provided accurate strain measurements and displacement analysis that closely matched experimental values, confirming the reliability of this open-source DIC system. DIC also revealed strain fields developing before and after the onset of cracking, providing insight into the contour failure of the timber beam. The strain fields obtained from DIC were found to be in excellent agreement with the crack pattern from the experimental results. Additionally, DIC results for displacement analysis and elastic stiffness were in good accord with experimental observations and beam theory for displacement calculation, further confirming the reliability and effectiveness of DIC as an analytical technique. The results of this study also have practical implications by highlighting the potential of open-source DIC techniques in the same way as commercial DIC software for ensuring accuracy and efficiency in materials testing and analysis for structural applications, particularly in timber composite materials.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"83 3","pages":""},"PeriodicalIF":2.4,"publicationDate":"2025-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-025-02258-4.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143877749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of the properties of birch bark tar obtained by the double-clay pot method and the laboratory method 双陶罐法与实验室法所得桦树皮焦油的性能比较

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2025-04-25 DOI: 10.1007/s00107-025-02255-7

Monika Bartkowiak, Szymon Rosołowski, Jakub Brózdowski, Grzegorz Cofta, Grażyna Dąbrowska, Magdalena Zborowska

引用次数: 0