Academic literature on the topic 'Mechano-sorptive effect'

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Journal articles on the topic "Mechano-sorptive effect"

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Hamdan, Sinin, Mahbub Hasan, and Chew Meng Yew. "D EFORMATION OF WOOD IN C OMPRESSION DURING MOISTURE M OVEMENT." ASEAN Journal on Science and Technology for Development 27, no. 2 (2017): 1–10. http://dx.doi.org/10.29037/ajstd.183.

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This work presents the phenomenon of mechano-sorptive strain in the deformation of wood during moisture content(MC)changes. A series of experiments were designed to demonstrate the greatly enhanced deformation due to the mechano-sorptive effect. The purpose of this work is to show the magnitude of mechano-sorptive creep compared to the ordinary viscoelastic creep with applied compressive load. In order to do this, the moisture movement with MC change, moisture movement without MC change and conditions without moisture movement were induced. The unique patterns of strains of various conditions
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Hamdan, Sinin, Mahbub Hasan, and Chew Meng Yew. "Deformation of wood in compression during moisture movement." ASEAN Journal on Science and Technology for Development 26, no. 2 (2017): 1–10. http://dx.doi.org/10.29037/ajstd.316.

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This work presents the phenomenon of mechano-sorptive strain in the deformation of wood during moisture content (MC) changes. A series of experiments were designed to demonstrate the greatly enhanced deformation due to the mechano- sorptive effect. The purpose of this work is to show the magnitude of mechano-sorptive creep compared to the ordinary viscoelastic creep with applied compressive load. In order to do this, the moisture movement with MC change, moisture movement without MC change and conditions without moisture movement were induced. The unique patterns of strains of various conditio
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Hamdan, S., M. S. Osman, and M. Y. Chew. "DEFORMATION OF WOOD IN COMPRESSION DURING MOISTURE MOVEMENT." ASEAN Journal on Science and Technology for Development 25, no. 2 (2017): 219–26. http://dx.doi.org/10.29037/ajstd.244.

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This work presents the phenomenon of mechano-sorptive strain in the deformation of wood during moisture content (MC) changes. A series of experiments were designed to demonstrate the greatly enhanced deformation due to the mechano-sorptive effect. The purpose of this work is to show the magnitude of mechano-sorptive creep compared to the ordinary viscoelastic creep with applied compressive load. In order to do this, several conditions were induced. They were the moisture movement with MC change, moisture movement without MC change and conditions without moisture movement. Several apparatus wer
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Jojo, Joan Mary, Gouri S. Giri, and Praveen Nagarajan. "Study on interaction of Viscoelastic and Mechano-sorptive creep and effect of Fibre Reinforcement on creep of Timber beams." IOP Conference Series: Earth and Environmental Science 1327, no. 1 (2024): 012011. http://dx.doi.org/10.1088/1755-1315/1327/1/012011.

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Abstract Timber is a sustainable material widely used in structural elements. Its viscoelastic nature, in which the stress-strain relation varies with time, poses significant challenge to the durability of timber structures. Creep of timber under constant loading depends on various factors like stress level, moisture content, load-to-grain angle, temperature, relative humidity etc. Among these, relative humidity and moisture content in timber are the most crucial. Drastically varying moisture content causes mechano-sorptive creep. However, the interaction and contribution of various factors ca
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Hsieh, Tai-Yun, and Feng-Cheng Chang. "Effects of moisture content and temperature on wood creep." Holzforschung 72, no. 12 (2018): 1071–78. http://dx.doi.org/10.1515/hf-2018-0056.

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AbstractThe effects of moisture content (MC) and temperature (T) on the creep of Japanese cedar were investigated via a series of short-term creep tests, while MC had a higher effect than T, desorption of water caused more deformation. The results were separated into two distinct groups with MCs higher or lower than the equilibrium moisture content (EMC) and it was found that the mechano-sorptive effect is time-independent. The total creep strain of wood was explained by a model considering the instantaneous strain, creep strain and strain induced by the mechano-sorptive effect. The proposed m
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Molinski, Waldemar, Jan Raczkowski, and Lech Muszynski. "Acoustic Emission Generated upon Mechano-Sorptive Creep of Wood Bent Across to the Grain under Asymmetrical Moistening." Holzforschung 54, no. 3 (2000): 305–8. http://dx.doi.org/10.1515/hf.2000.051.

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Summary Acoustic emission (AE) generated in pine wood samples upon bending across the grain under simultaneous moistening of the tension zone, was measured. The aim of the study was to determine the effect of external tension load on AE generated during asymmetrical moistening of dry wood samples in water. The cumulative counts of AE signals recorded during simultaneous moistening of the tension zone of sample were proportional to the intensity of the mechano-sorptive strain. AE starts when the mechano-sorptive strain in the tension zone (εT) reaches a value close to 0.8%.
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Barroso, Lopes Duarte, and Carsten Mai. "Mechano-sorptive creep of Portuguese pinewood chemically modified." Folia Forestalia, Series A - Forestry 56(1) (March 1, 2014): 30–44. https://doi.org/10.2478/ffp-2014-0004.

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The effect of chemical modification on mechano-sorptive creep in bending was studied by experimental work. Stakes with 20 × 20 × 400 mm RTL of Portuguese wood species (Pinus pinaster Aiton) modified with 1,3-dimethylol-4,5-dihydroxyethyleneurea (DMDHEU), m-methylated melamine resin (MMF), tetraethoxysilane (TEOS) and amid wax (WA) were measured under asymmetric moistening conditions over a period of 42 days (app. 1000 hours) with stress level (SL) of 12 MPa, according to ENV 1156. The cell wall treatments (DMDHEU and MMF resins) had shown significant reduction of creep (creep facto
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Barroso Lopes, Duarte, and Carsten Mai. "Mechano-sorptive creep of Portuguese pinewood chemically modified." Folia Forestalia Polonica 56, no. 1 (2014): 30–44. http://dx.doi.org/10.2478/ffp-2014-0004.

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Summary The effect of chemical modification on mechano-sorptive creep in bending was studied by experimental work. Stakes with 20 × 20 × 400 mm RTL of Portuguese wood species (Pinus pinaster Aiton) modified with 1,3-dimethylol-4,5- dihydroxyethyleneurea (DMDHEU), m-methylated melamine resin (MMF), tetraethoxysilane (TEOS) and amid wax (WA) were measured under asymmetric moistening conditions over a period of 42 days (app. 1000 hours) with stress level (SL) of 12 MPa, according to ENV 1156. The cell wall treatments (DMDHEU and MMF resins) had shown significant reduction of creep (creep factors,
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Muszyński, Lech, Rastislav Lagana, Stephen M. Shaler, and William Davids. "Comments on the experimental methodology for determination of the hygro-mechanical properties of wood." Holzforschung 59, no. 2 (2005): 232–39. http://dx.doi.org/10.1515/hf.2005.037.

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Abstract When wood is subjected simultaneously to load and moisture content changes below the fiber saturation point, the mechano-sorptive effect may be observed as an additional deformation that cannot be attributed to simple superposition of elastic deformation, free shrinkage or swelling, or creep in steady climate conditions. The phenomenon has been subject to research for more than half a century. Although numerous mathematical models and detailed theoretical descriptions have been proposed over time, the basic mechanism of mechano-sorption has remained unclear, the experimental data are
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Wu, Q., and M. R. Milota. "EFFECT OF CREEP AND MECHANO-SORPTIVE EFFECT ON STRESS DEVELOPMENT DURING DRYING." Drying Technology 12, no. 8 (1994): 2057–85. http://dx.doi.org/10.1080/07373939408962219.

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Dissertations / Theses on the topic "Mechano-sorptive effect"

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Strömbro, Jessica. "Micro-mechanical mechanisms for deformation in polymer-material structures." Doctoral thesis, KTH, Hållfasthetslära (Inst.), 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-4626.

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In this thesis, the focus has been on micro-mechanical mechanisms in polymer-based materials and structures. The first part of the thesis treats length-scale effects on polymer materials. Experiments have showed that the smaller the specimen, the stronger is the material. The length-scale effect was examined experimentally in two different polymers materials, polystyrene and epoxy. First micro-indentations to various depths were made on polystyrene. The experiments showed that length-scale effects in inelastic deformations exist in polystyrene. It was also possible to show a connection between
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Karlström, Katarina. "Extended impregnation kraft cooking of softwood : Effects on reject, yield, pulping uniformity, and physical properties." Licentiate thesis, KTH, Fibre and Polymer Technology, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-11721.

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<p>Converting wood into paper is a complex process involving many different stages, one of which is pulping. Pulping involves liberating the wood fibres from each other, which can be done either chemically or mechanically. This thesis focuses on the most common chemical pulping method, the kraft cooking process, and especially on a recently developed improvement of the impregnation phase, which is the first part of a kraft cook.</p><p>Extended impregnation kraft cooking (EIC) technique is demonstrated to be an improvement of the kraft pulping process and provides a way to utilize softwood to a
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Book chapters on the topic "Mechano-sorptive effect"

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Kowal, M. "Mechano-sorptive effect for water soaked wood." In Poromechanics. CRC Press, 2020. http://dx.doi.org/10.1201/9781003078487-99.

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Conference papers on the topic "Mechano-sorptive effect"

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Page, D. H. "Prepared Contribution on the Mechano-sorptive Effect." In Products of Papermaking. Fundamental Research Committee (FRC), Manchester, 1993. http://dx.doi.org/10.15376/frc.1993.3.1667.

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