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Journal articles on the topic 'Mechano-sorptive effect'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

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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2

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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3

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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4

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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7

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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9

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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10

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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11

Milic, Goran, and Nebojsa Todorovic. "Analysis of mechano-sorptive effect in oscillatory drying of beech timber." Bulletin of the Faculty of Forestry, no. 114 (2016): 119–36. http://dx.doi.org/10.2298/gsf1614119m.

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The paper shows results of analysis of influences of oscillating parameters of drying on measuring wood moisture content in the kiln, rate and quality of drying. For this analysis, we used a conventional drying cycle, a cycle with oscillating equilibrium moisture content (EMC), and a cycle with oscillating temperatures. A special software tool was created for managing the oscillations. It was shown that oscillations of EMC and temperatures result in cyclic changes in wood MC, but also in the additional inaccuracies of MC measurements in the kiln. The drying process of the cycle with oscillatin

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12

Peng, Hui, Jiali Jiang, Jianxiong Lu, and Jinzhen Cao. "Orthotropic mechano-sorptive creep behavior of Chinese fir during the moisture adsorption process determined in tensile mode via dynamic mechanical analysis (DMA)." Holzforschung 73, no. 3 (2019): 229–39. http://dx.doi.org/10.1515/hf-2018-0067.

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AbstractThe orthotropic viscoelastic creep (VEC) at a constant moisture content (MC) and mechano-sorptive creep (MSC) during the adsorption process were examined for Chinese fir (Cunninghamia lanceolata) under tension at 20, 40, 60 and 80% relative humidity (RH) (30°C). Free swelling was performed on matched specimens based on the strain partition assumption to better understand the characteristics of the mechano-sorptive (MS) phenomenon. Expansion, elastic and time-dependent creep behaviors of radial (R) and tangential (T) specimens were affected by the MC to a higher degree than those of the

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13

Erickson, Robert. "THE EFFECT OF DRYING TEMPERATURE ON THE MECHANO-SORPTIVE BEHAVIOR OF RED OAK LUMBER." Drying Technology 12, no. 8 (1994): 1943–61. http://dx.doi.org/10.1080/07373939408962214.

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14

Mikšik, Mislav, Stjepan Pervan, Miljenko Klarić, Anka Ozana Čavlović, Nikola Španić, and Silvana Prekrat. "Čimbenici koji utječu na proces savijanja cjelovitog drva." Drvna industrija 74, no. 1 (2023): 105–14. http://dx.doi.org/10.5552/drvind.2023.0020.

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The effect of temperature and moisture on the behaviour of solid wood is a well-known fact that directly affects wood creep as well. Wood creep includes three types of behaviour, such as viscoelastic creep, mechano-sorptive creep, and pseudo-creep and recovery. All these types can occur simultaneously, and it is sometimes complicated for researchers to isolate or distinct one from another. This paper presents a review of literature on wood rheology and creep properties, as well as factors that influence them, mainly time, temperature, and moisture content. The study of the viscoelasticity and

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15

Salin, J. G. "A Theoretical Analysis of Timber Drying in Oscillating Climates." Holzforschung 57, no. 4 (2003): 427–32. http://dx.doi.org/10.1515/hf.2003.063.

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Summary In this study the influence of oscillating climates on the drying of timber is investigated theoretically. First, the effect of oscillations superimposed on an ordinary drying schedule is examined by solving the corresponding partial differential equations. It is shown that the average drying rate is not affected by the oscillations. Second, properly selected oscillation amplitudes and frequencies can result in enhanced mechano-sorptive creep in the board surface layer, which enables increased external driving forces with an unchanged risk of checking. This method is analysed by using

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16

Zhan, Tianyi, Jiali Jiang, Jianxiong Lu, Yaoli Zhang, and Jianmin Chang. "Influence of hygrothermal condition on dynamic viscoelasticity of Chinese fir (Cunninghamia lanceolata). Part 2: moisture desorption." Holzforschung 72, no. 7 (2018): 579–88. http://dx.doi.org/10.1515/hf-2017-0130.

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AbstractThe influence of hygrothermal condition on dynamic viscoelasticity of Chinese fir (Cunninghamia lanceolata) during the moisture desorption (MDes) process was investigated. The ambient hygrothermal environments were set up as a series of constant temperatures and two relative humidity (RH) modes (RHramp-downand RHisohume). The MDesprovided space for the rearrangement of the hydrogen bonds (Re-HB) and caused a mechano-sorptive (MS) effect. The enhancement of the Re-HB effect negatively correlated with the increment of loss modulus, while the elevation of the MS and the heating effects in

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17

Entwistle, Kenneth M. "The mechanosorptive effect in Pinus radiata D. Don." Holzforschung 59, no. 5 (2005): 552–58. http://dx.doi.org/10.1515/hf.2005.091.

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Abstract Measurements are reported of the mechanosorptive strain in Pinus radiata specimens stressed either in torsion or in bending. It is demonstrated that, to secure valid data, correction must be made for the moisture-induced distortion at zero load. A series of measurements can be made on a single specimen if two successive mechano-sorptive loading cycles are used and the sense of the stress is reversed for the second cycle. At the end of this procedure the specimen has reverted to its original dimensions. The mechanosorptive strain is shown to vary linearly with the applied stress; the r

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18

Zhan, Tianyi, Jiali Jiang, Hui Peng, and Jianxiong Lu. "Evidence of mechano-sorptive effect during moisture adsorption process under hygrothermal conditions: Characterized by static and dynamic loadings." Thermochimica Acta 633 (June 2016): 91–97. http://dx.doi.org/10.1016/j.tca.2016.02.003.

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19

Takahashi, Chika, Yutaka Ishimaru, Ikuho Iida, and Yuzo Furuta. "The creep of wood destabilized by change in moisture content. Part 3: The influence of changing moisture history on creep behavior." Holzforschung 60, no. 3 (2006): 299–303. http://dx.doi.org/10.1515/hf.2006.048.

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Abstract The creep of wood increases remarkably during moisture changes, a phenomenon called mechano-sorptive creep. The microstructure in cell walls of wood is destabilized by changes in temperature and/or moisture content. The mechanical properties of destabilized wood change over long periods of time. In the present study, the influence of moisture conditioning history on bending creep was examined. During changes in moisture, greater creep occurred in wood subjected to the first moisture change after long-term moisture conditioning than immediately after desorption or adsorption. This resu

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20

Zhan, Tianyi, Jiali Jiang, Jianxiong Lu, Yaoli Zhang, and Jianmin Chang. "Influence of hygrothermal condition on dynamic viscoelasticity of Chinese fir (Cunninghamia lanceolata). Part 1: moisture adsorption." Holzforschung 72, no. 7 (2018): 567–78. http://dx.doi.org/10.1515/hf-2017-0129.

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AbstractThe dynamic viscoelasticity of Chinese fir was investigated by dynamic mechanical analysis (DMA), while the influence of the moisture adsorption (MAds) was the focus of the study. The specimens were climatized at 30, 40, 50, 60, 70 and 80°C under two relative humidity (RH) modes. The RHrampmode included 0, 30, 60 and 90% RH with varied ramping rates (0.5, 1.0 and 2.0% RH min−1), while the RHisohumemethod worked with constant RHs of 30, 60 and 90%, respectively, for 60, 120 or 240 min. During the MAdsprocess, a decrease in stiffness and an increase in damping of the wood were seen and w

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21

Bengtsson, C., and R. Kliger. "Bending Creep of High-Temperature Dried Spruce Timber." Holzforschung 57, no. 1 (2003): 95–100. http://dx.doi.org/10.1515/hf.2003.015.

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Summary In this paper, bending creep test results from high-temperature (HT) dried Norway Spruce timber are presented. The results are compared with creep tests of conventional low-temperature (LT) dried timber. The HT drying was performed at 115°C and the LT drying was performed at 70°C. The creep tests were performed in a varying climate with 20°C and 30–90% relative humidity. A total number of 24 specimens, 45 × 70 × 1100 mm, were loaded in bending during approximately 240 days. Both the HT-dried and the LT-dried material were cut from the same four trees to have as equal raw material as po

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Lu, J. P., and R. H. Leicester. "Mechano-sorptive effects on timber creep." Wood Science and Technology 31, no. 5 (1997): 331–37. http://dx.doi.org/10.1007/s002260050040.

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23

Dong, Fang, Anne-Mari Olsson, and Lennart Salmén. "Fibre morphological effects on mechano-sorptive creep." Wood Science and Technology 44, no. 3 (2009): 475–83. http://dx.doi.org/10.1007/s00226-009-0300-3.

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Takahashi, Chika, Yutaka Ishimaru, Ikuho Iida, and Yuzo Furuta. "The creep of wood destabilized by change in moisture content. Part 2: The creep behaviors of wood during and immediately after adsorption." Holzforschung 59, no. 1 (2005): 46–53. http://dx.doi.org/10.1515/hf.2005.008.

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Abstract The fluidity of wood remarkably increases during moisture changes. This phenomenon is termed mechano-sorptive creep. The mechanism of mechano-sorptive creep has been studied, including a previous report by our group. Here, creep tests in bending were carried out for wood during and immediately after adsorption of moisture and after a long moisture conditioning. The effects of the rate of moisture adsorption on creep were also examined. The results and conclusions are as follows: (I) Greater creep occurred immediately after the adsorption process as compared with that after a long mois

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Takahashi, Chika, Noriko Nakazawa, Kazuyuki Ishibashi, Ikuho Iida, Yuzo Furuta, and Yutaka Ishimaru. "Influence of variation in modulus of elasticity on creep of wood during changing process of moisture." Holzforschung 60, no. 4 (2006): 445–49. http://dx.doi.org/10.1515/hf.2006.070.

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Abstract This study considered the influence of variations in the modulus of elasticity (MOE) on the mechano-sorptive (MS) creep of wood. MOE in the radial direction (ER) was investigated as a function of changes in moisture content (MC). ER values were lower during both adsorption and desorption processes than under constant MC, despite the same MC values. However, the effects observed were small and are thus not of great practical importance.

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Zhang, Wenbo, Morihiko Tokumoto, and Takashi Takeda. "Effects of temperature on mechano-sorptive creep of delignified wood." Journal of Wood Science 53, no. 3 (2007): 187–91. http://dx.doi.org/10.1007/s10086-006-0858-4.

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Zhang, Wenbo, Morihiko Tokumoto, Takashi Takeda, and Koh Yasue. "Effects of Delignifying Treatments on Mechano-sorptive Creep of Wood I." Mokuzai Gakkaishi 52, no. 1 (2006): 19–28. http://dx.doi.org/10.2488/jwrs.52.19.

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Zhang, Wenbo, Morihiko Tokumoto, Takashi Takeda, and Koh Yasue. "Effects of Delignifying Treatments on Mechano-sorptive Creep of Wood III." Mokuzai Gakkaishi 52, no. 4 (2006): 206–14. http://dx.doi.org/10.2488/jwrs.52.206.

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Zhang, Wenbo, Morihiko Tokumoto, Takashi Takeda, and Koh Yasue. "Effects of Delignifying Treatments on Mechano-sorptive Creep of Wood II." Mokuzai Gakkaishi 52, no. 1 (2006): 29–36. http://dx.doi.org/10.2488/jwrs.52.29.

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Li, Mary J., and Michael Pecht. "Environmental Scanning Electron Microscopic Investigation of Failure Mechanisms in Electronic Packages." Journal of Electronic Packaging 117, no. 3 (1995): 225–29. http://dx.doi.org/10.1115/1.2792096.

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Environmental Scanning Electron Microscopy (E-SEM) is a technique which provides the capability to investigate surface morphologies over a variety of controllable environmental conditions. This paper discusses the principal of the E-SEM and presents three experimental investigations of failure mechanisms in electronic packages using E-SEM techniques. The first is a study of thermally induced failures of MMIC devices. The second investigation focuses on mechano-sorptive properties of multilayer thin-film polyimides. The third investigation concentrates on relative humidity and thermal cycling e

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31

Dubois, F., O. Pop, J. Husson, and N. Sauvat. "Experimental approach about fracture process in timber elements under mechano-sorptive effects." EPJ Web of Conferences 6 (2010): 28001. http://dx.doi.org/10.1051/epjconf/20100628001.

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Li, Chao, and Yuxiang Huang. "Creep behavior of laminated veneer lumber from poplar under cyclic humidity changes." BioResources 14, no. 4 (2019): 8018–28. http://dx.doi.org/10.15376/biores.14.4.8018-8028.

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Many academic studies over the years have confirmed that mechano-sorptive (MS) creep is an inherent characteristic of wood. Unlike solid wood, bond lines are introduced into laminated veneer lumber (LVL), creating a laminated structure with different hygroscopicity. What are the effects of these differences on the MS creep of LVL? In this study, three groups of well-matched LVL samples were subjected to four-point bending loading within different relative humidity cycles. For each group, the applied load ranged from 15% to 35% of the short-term fracture load. The results showed that after the

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Mustapha, Z., K. Mohammed, and A. Ocholi. "Creep Investigation Model for Timber: A Review." Nigerian Research Journal of Engineering and Environmental Sciences 6, no. 1 (2021): 414–25. https://doi.org/10.5281/zenodo.5048474.

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<em>Timber is a natural material from matured trees that can be used for structural applications. Material properties of timber such as light weight to strength ratio, good durability, good insulation against heat and sound impact makes it suitable for use as material for constructing roofing system, pedestrian or bicycle bridges and framing of other load-bearing structures, where strength is the major factor in its selection and usage. Unfortunately, time-dependent deformation affects the strength and stiffness of timber in service. The process of creep in timber, which is affected by variabl

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Tsubaki, Takashi, and Takato Nakano. "Creep behavior of bamboo under various desorption conditions." Holzforschung 64, no. 4 (2010). http://dx.doi.org/10.1515/hf.2010.085.

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Abstract Longitudinal bending creep during desorption, which is also referred to as mechano-sorptive creep, was measured under various desorption conditions for moso bamboo (Phyllostachys pubescens) to clarify the effect of the conditions and the specimen part. The results showed that the mechano-sorptive effect appeared not only in wood but also in bamboo, and that its effect was reduced by an increase in the volume fraction of the bundle sheath in the cross-sectional area. The results of this experiment suggest that mechano-sorptive behavior is related to the amorphous matrix in bamboo compo

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Entwistle, Kenneth, and Shakti Chauhan. "The effect of galactan content on the mechano-sorptive strain in loblolly pine." Holzforschung 65, no. 3 (2011). http://dx.doi.org/10.1515/hf.2011.037.

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Abstract Mechano-sorptive (MS) strains were measured in torsion on eight loblolly pine specimens as a function of galactan content. The strains were generated by an increase of environmental humidity from 38% to 84% and were measured during an anticlockwise and a clockwise loading scheme that caused the specimen to recover its original dimensions at the end of the test. The magnitude of the MS strains was found to be independent of galactan concentration. The specimens with high and low galactan contents had different MS strains but the average of the measured data was the same. The number of

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Brémaud, Iris, and Joseph Gril. "Transient destabilisation in anisotropic vibrational properties of wood when changing humidity." Holzforschung, September 26, 2020. http://dx.doi.org/10.1515/hf-2020-0029.

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AbstractMoisture changes cause transient effects in various polymeric materials. In wood, they are mainly documented in semi-static or low-frequency domains and could explain various anomalies in wood behaviour, including the so-called mechano-sorptive effect. This article aimed at exploring and quantifying transient effects in wood vibrational properties, evidenced but in few publications. A series of 65 experiments on spruce and maple, in longitudinal (L) and radial (R) directions, spanning many humidity trajectories, were monitored through time (1–7 weeks) after step-change in relative humi

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M�rtensson, A. "Mechano-sorptive effects in wooden material." Wood Science and Technology 28, no. 6 (1994). http://dx.doi.org/10.1007/bf00225463.

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