Marly G.C. Ucategui, F. França, R. D. Seale, C. A. Senalik, R. Ross
{"title":"Flexural and Tensile Properties of f2x6 and 2x10 Southern Pine Lumber","authors":"Marly G.C. Ucategui, F. França, R. D. Seale, C. A. Senalik, R. Ross","doi":"10.22382/wfs-2022-24","DOIUrl":"https://doi.org/10.22382/wfs-2022-24","url":null,"abstract":"","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49097611","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
A. Olsson, G. Pot, J. Viguier, M. Hu, J. Oscarsson
{"title":"Performance of timber board models for prediction of local bending stiffness and strength - with application on Douglas fir sawn timber","authors":"A. Olsson, G. Pot, J. Viguier, M. Hu, J. Oscarsson","doi":"10.22382/wfs-2022-22","DOIUrl":"https://doi.org/10.22382/wfs-2022-22","url":null,"abstract":"","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47569047","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Investigation of Biogass Digestate as Fiber Materials for Composites;","authors":"Marion Gebbardt, A. Lemmer","doi":"10.22382/wfs-2022-23","DOIUrl":"https://doi.org/10.22382/wfs-2022-23","url":null,"abstract":"","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48891273","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Weidong Wang, Jun Shen, Wang Xu, Meilin Liu, Huiyu Wang, Yu Chen, Anlei Du
{"title":"Characterization and Analysis of Very Volatile Organic Compounds and Odors from Medium Density Fiberboard Coated with Differenet Lacquers Using Gas Chromatography Coupled with Mass Spectrometry and Olfactormetry","authors":"Weidong Wang, Jun Shen, Wang Xu, Meilin Liu, Huiyu Wang, Yu Chen, Anlei Du","doi":"10.22382/wfs-2022-19","DOIUrl":"https://doi.org/10.22382/wfs-2022-19","url":null,"abstract":"","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42739719","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Shmulsky, L. Khademibami, C. A. Senalik, R. D. Seale, R. Ross
{"title":"The Influence of Foam Discontinuity in the Shear Zone of Structural Insulated Panel Beams","authors":"R. Shmulsky, L. Khademibami, C. A. Senalik, R. D. Seale, R. Ross","doi":"10.22382/wfs-2022-18","DOIUrl":"https://doi.org/10.22382/wfs-2022-18","url":null,"abstract":"","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43630421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
E. Hansen, A. Beckwith, C. Lancaster, S. Leavengood
. Recent developments in factory-grown foods suggest that factory-grown wood (FGW) may be on the horizon. In fact, recent work at Massachusetts Institute of Technology introduces tunable plant-based materials, an early indicator of what may evolve into a new source of raw material for forest sector companies, and others. Industry and academia would be wise to monitor developments in this fi eld as they may present signi fi cant opportunities and/or adjustments for both. We explore the state-of-the-art in this budding area of science and contemplate implications of successfully growing wood or other lignocellulosic materials in factories. Given a changing climate and focus on carbon emissions, the pressure to drastically reduce CO 2 production will continue climb. Could reduction of their footprint via FGW be an important part of this equation for forest sector companies, going beyond the need to “ make every tree count ” ? In other words, might FGW present an environmental and climate protection breakthrough? Or might it simply trade forest-based environmental impacts for others? What other consequences does FGW promise for companies? And what might it mean for wood science programs, critical suppliers of research and development and skilled employees for the industry? We explore each of these questions and contemplate potential actions and outcomes.
{"title":"Reviewed Commentary: Factory-Grown Wood, the Future of Forestry?","authors":"E. Hansen, A. Beckwith, C. Lancaster, S. Leavengood","doi":"10.22382/wfs-2022-20","DOIUrl":"https://doi.org/10.22382/wfs-2022-20","url":null,"abstract":". Recent developments in factory-grown foods suggest that factory-grown wood (FGW) may be on the horizon. In fact, recent work at Massachusetts Institute of Technology introduces tunable plant-based materials, an early indicator of what may evolve into a new source of raw material for forest sector companies, and others. Industry and academia would be wise to monitor developments in this fi eld as they may present signi fi cant opportunities and/or adjustments for both. We explore the state-of-the-art in this budding area of science and contemplate implications of successfully growing wood or other lignocellulosic materials in factories. Given a changing climate and focus on carbon emissions, the pressure to drastically reduce CO 2 production will continue climb. Could reduction of their footprint via FGW be an important part of this equation for forest sector companies, going beyond the need to “ make every tree count ” ? In other words, might FGW present an environmental and climate protection breakthrough? Or might it simply trade forest-based environmental impacts for others? What other consequences does FGW promise for companies? And what might it mean for wood science programs, critical suppliers of research and development and skilled employees for the industry? We explore each of these questions and contemplate potential actions and outcomes.","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46592394","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Osman, Mansur Ahmad, Mohd Mazaarudin Zakaris, B. F. A. Bakar, F. Abu, S. H. Kamarudin, Shabril Anuar Babari, Reza Hosseinpourpia
{"title":"Variation of Chemical Properties, Crystalline Structure and Calorific Values of Native Malaysian Bamboo Species","authors":"S. Osman, Mansur Ahmad, Mohd Mazaarudin Zakaris, B. F. A. Bakar, F. Abu, S. H. Kamarudin, Shabril Anuar Babari, Reza Hosseinpourpia","doi":"10.22382/wfs-2022-17","DOIUrl":"https://doi.org/10.22382/wfs-2022-17","url":null,"abstract":"","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44936194","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
C. B. Cáceres, R. Hernández, Jedi Rosero-Alvarado, Rentry Augusti Nurbaity
. The effects of the tool tip radius on debarking quality of unfrozen and frozen black spruce logs were studied. The power, energy consumption, and torque on frozen conditions were also studied. A prototype one-arm ring debarker was used. The experiment consisted of debarking logs using three tool tip radii (40, 180, and 300 m m) for each temperature ( 2 20 (cid:1) C and 1 20 (cid:1) C). The rotational and feed speeds, tip overlap, and rake angle were kept constants. Debarking quality was evaluated by two criteria: the proportion of bark remaining on log surfaces and the amount of wood in bark residues (WIB). Log characteristics, used as covariates, ie dimensions, eccentricity, bark thickness, knot features, bark/wood shear strength (BWSS), basic densities and moisture contents of sapwood and bark were measured, as well as total removed material after debarking. The results showed that tool tip radius had a signi fi cant effect on debarking quality of frozen and unfrozen logs. The proportion of bark on log surfaces increased and the amount of WIB decreased as tip radius increased. At the same applied radial force, a wider tip radius showed a shallower tip penetration leaving bigger regions of bark on the log surfaces. In contrast, a narrower tip radius showed a deeper tip penetration resulting in important wood fi ber tear-out. The bark thickness and inner bark MC also affected debarking quality. The mean power, mean torque, and energy consumption increased as the tip radius decreased. However, this effect will depend on the choice of the applied radial force during debarking. Motor performance was also affected by the total removed material, log diameter, and BWSS. Overall, the results highlight the importance of choosing an adequate combination of tool tip radius and applied radial force to obtain the most pro fi table debarking quality with an ef fi cient energy consumption.
{"title":"Effect of Tool Tip Radius on ring Debarker Performance","authors":"C. B. Cáceres, R. Hernández, Jedi Rosero-Alvarado, Rentry Augusti Nurbaity","doi":"10.22382/wfs-2022-16","DOIUrl":"https://doi.org/10.22382/wfs-2022-16","url":null,"abstract":". The effects of the tool tip radius on debarking quality of unfrozen and frozen black spruce logs were studied. The power, energy consumption, and torque on frozen conditions were also studied. A prototype one-arm ring debarker was used. The experiment consisted of debarking logs using three tool tip radii (40, 180, and 300 m m) for each temperature ( 2 20 (cid:1) C and 1 20 (cid:1) C). The rotational and feed speeds, tip overlap, and rake angle were kept constants. Debarking quality was evaluated by two criteria: the proportion of bark remaining on log surfaces and the amount of wood in bark residues (WIB). Log characteristics, used as covariates, ie dimensions, eccentricity, bark thickness, knot features, bark/wood shear strength (BWSS), basic densities and moisture contents of sapwood and bark were measured, as well as total removed material after debarking. The results showed that tool tip radius had a signi fi cant effect on debarking quality of frozen and unfrozen logs. The proportion of bark on log surfaces increased and the amount of WIB decreased as tip radius increased. At the same applied radial force, a wider tip radius showed a shallower tip penetration leaving bigger regions of bark on the log surfaces. In contrast, a narrower tip radius showed a deeper tip penetration resulting in important wood fi ber tear-out. The bark thickness and inner bark MC also affected debarking quality. The mean power, mean torque, and energy consumption increased as the tip radius decreased. However, this effect will depend on the choice of the applied radial force during debarking. Motor performance was also affected by the total removed material, log diameter, and BWSS. Overall, the results highlight the importance of choosing an adequate combination of tool tip radius and applied radial force to obtain the most pro fi table debarking quality with an ef fi cient energy consumption.","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43786981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Moya, Johanna Gaitán-Alvarez, A. Berrocal, C. B. Cáceres, R. Hernández
. The treatment of acetylation on tropical woods is in fl uenced by their different levels of permeability and how these affect the weight percentage gain (WPG) in acetylated wood. The objective of this study was to identify the effect of acetylation on physical properties, hygroscopic and dimensional stability, wetting rate, and durability of nine tropical species of hardwoods used for commercial reforestations in Costa Rica. The results showed that WPG varied from 2.2% to 16.8% among species. Positive signi fi cant correlations were observed between WPG and two parameters of dimensional and hygroscopic stability, whereas a negative correlation was observed with water absorption (WA). For species with a WPG of over 10% ( Vochysia ferruginea , Vochysia guatemalensis , Cordia alliodora , and Enterolobium cyclocarpum ) wetting rate, hygroscopic stability, and resistance to biological attack showed an increase while swelling, and WA decreased. For these species, the best behaviors were obtained with an acetylation time of 2.5 h. The same properties of wood in species with a WPG under 5% were found to be less affected by the different acetylation times and showed little difference in relation to untreated wood. Finally, the analysis showed that the dimensional stability obtained was attributed to the reduction of the absorptive capacity of the acetylated wood.
{"title":"Wood Properties of Nine Acetylated Tropical Hardwoods from Fast-Grown Plantations in Costa Rica","authors":"R. Moya, Johanna Gaitán-Alvarez, A. Berrocal, C. B. Cáceres, R. Hernández","doi":"10.22382/wfs-2022-14","DOIUrl":"https://doi.org/10.22382/wfs-2022-14","url":null,"abstract":". The treatment of acetylation on tropical woods is in fl uenced by their different levels of permeability and how these affect the weight percentage gain (WPG) in acetylated wood. The objective of this study was to identify the effect of acetylation on physical properties, hygroscopic and dimensional stability, wetting rate, and durability of nine tropical species of hardwoods used for commercial reforestations in Costa Rica. The results showed that WPG varied from 2.2% to 16.8% among species. Positive signi fi cant correlations were observed between WPG and two parameters of dimensional and hygroscopic stability, whereas a negative correlation was observed with water absorption (WA). For species with a WPG of over 10% ( Vochysia ferruginea , Vochysia guatemalensis , Cordia alliodora , and Enterolobium cyclocarpum ) wetting rate, hygroscopic stability, and resistance to biological attack showed an increase while swelling, and WA decreased. For these species, the best behaviors were obtained with an acetylation time of 2.5 h. The same properties of wood in species with a WPG under 5% were found to be less affected by the different acetylation times and showed little difference in relation to untreated wood. Finally, the analysis showed that the dimensional stability obtained was attributed to the reduction of the absorptive capacity of the acetylated wood.","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44591151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chul-Hwan Kim, Min-Seok Lee, Ji-Young Lee, Jeong-Heon Ryu, Jinhyeok Park, Jin-Hong Park
. The pitch contained in thermomechanical pulp (TMP) negatively affects paper quality, pulp, and the papermaking process. Serious pitch and stickies problems may occur in paper recycling processes. In this study, the effects of chemicals used to control the pitch in the TMP process were compared. The method used to analyze the pitch control effect was to perform image analysis after using a reagent that selectively stains only the hydrophobic pitch. Three different mechanisms, namely fi xation, detacki fi cation, and dispersion, were applied to solve the pitch problem from TMP. All the control agents were effective in pitch control, and, in particular, the agents related to fi xation and dispersion were found to be more effective in reducing the number and area of tacky particles per unit area in sheets and white water. However, it was dif fi cult to clearly identify the effect of both the detacki fi ers and the dispersant agents through image analysis after staining except for the fi xative agent.
{"title":"Comparison of the Effect of TMP Pitch Control Agents with Different Mechanisms","authors":"Chul-Hwan Kim, Min-Seok Lee, Ji-Young Lee, Jeong-Heon Ryu, Jinhyeok Park, Jin-Hong Park","doi":"10.22382/wfs-2022-12","DOIUrl":"https://doi.org/10.22382/wfs-2022-12","url":null,"abstract":". The pitch contained in thermomechanical pulp (TMP) negatively affects paper quality, pulp, and the papermaking process. Serious pitch and stickies problems may occur in paper recycling processes. In this study, the effects of chemicals used to control the pitch in the TMP process were compared. The method used to analyze the pitch control effect was to perform image analysis after using a reagent that selectively stains only the hydrophobic pitch. Three different mechanisms, namely fi xation, detacki fi cation, and dispersion, were applied to solve the pitch problem from TMP. All the control agents were effective in pitch control, and, in particular, the agents related to fi xation and dispersion were found to be more effective in reducing the number and area of tacky particles per unit area in sheets and white water. However, it was dif fi cult to clearly identify the effect of both the detacki fi ers and the dispersant agents through image analysis after staining except for the fi xative agent.","PeriodicalId":23620,"journal":{"name":"Wood and Fiber Science","volume":" ","pages":""},"PeriodicalIF":1.4,"publicationDate":"2022-06-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44235644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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