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Journal articles on the topic 'Compression parallel to grain tests'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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1

Berndsen, Rodrigo Strzelecki, Ricardo Jorge Klitzke, Djeison Cesar Batista, Eduardo Mauro do Nascimento, and Fabiano Ostapiv. "RESISTÊNCIA À FLEXÃO ESTÁTICA E À COMPRESSÃO PARALELA DO BAMBU-MOSSÔ (Phyllostachys pubescens)." FLORESTA 43, no. 3 (2013): 485. http://dx.doi.org/10.5380/rf.v43i3.29319.

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O objetivo deste estudo foi analisar o efeito da posição do colmo e da idade nas propriedades mecânicas de flexão estática e compressão paralela às fibras do bambu-mossô (Phyllostachys pubescens), correlacionando a densidade aparente com as propriedades avaliadas. Os corpos de prova utilizados nos ensaios foram produzidos de material laminado colado, adaptados segundo a norma para madeira sólida ASTM D143-96, seguindo as proporções mantidas por Ahmad (2000). Os resultados apresentaram tendência crescente da resistência na flexão estática com a idade e com a posição do colmo em termos absolutos

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2

Kasal, Bohumil, Ilona Peszlen, Perry Peralta, and Laigeng Li. "Preliminary tests to evaluate the mechanical properties of young trees with small diameter." Holzforschung 61, no. 4 (2007): 390–93. http://dx.doi.org/10.1515/hf.2007.054.

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Abstract This paper describes methods developed to test the mechanical properties of small-diameter (3–10 mm) 1-year-old trees. Special test fixtures and procedures were designed to accommodate the small diameter and uneven shape of these young trees. The modulus of elasticity and strength in tension parallel to the grain, compression parallel to the grain, and bending were measured.

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3

Branco, Jorge M., Humberto Varum, and Paulo Cruz. "Structural Grades of Timber by Bending and Compression Tests." Materials Science Forum 514-516 (May 2006): 1663–67. http://dx.doi.org/10.4028/www.scientific.net/msf.514-516.1663.

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This paper presents the results obtained in a series of tests on Pinus Pinaster Ait. timber specimens, using the prEN408:2000, to estimate the local and global Young’s modulus and strength both in bending and compression parallel to the grain. The results obtained are compared with the values presented in the Portuguese Nationally Determined Parameters of Eurocode 5, for the quality classes assign by Portuguese Standard NP4305:1994 by visual grading.

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4

Xie, Qifang, Lipeng Zhang, Baozhuang Zhang, Gaojie Yang, and Jitao Yao. "Dynamic parallel-to-grain compressive properties of three softwoods under seismic strain rates: tests and constitutive modeling." Holzforschung 74, no. 10 (2020): 927–37. http://dx.doi.org/10.1515/hf-2019-0229.

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AbstractSoftwood is commonly used in timber structures, whose dynamic compressive properties along the grain direction under seismic rate actions are of major concern. In the present study, 108 samples were examined from three species of softwoods (spruce, Dahurian larch and pine) and subjected to four levels of strain rates (10−4 s−1, 10−3 s−1, 10−2 s−1 and 0.1 s−1) under parallel-to-grain monotonic and repeated compression. The seismic strain rate effects on softwood were investigated by observing the failure mechanisms, engineering stress-strain curves, initial crushing strength, elastic mo

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5

Chahud, Eduardo, Luiz A. Melgaço N. Branco, Francisco A. Rocco Lahr, André L. Christoforo, Rosane A. G. Battistelle, and Ivaldo D. Valarelli. "Influence of the Number of Load Cycles to Obtain the Stiffness Properties of Angico Preto (Anadenanthera macrocarpa) Wood Specie." Advanced Materials Research 1088 (February 2015): 669–71. http://dx.doi.org/10.4028/www.scientific.net/amr.1088.669.

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The tests used to obtain the stiffness properties of wood are made with two loading cycles, as defined by the Brazilian standard ABNT NBR 7190 (Design of Timber Structures). However, the possibility of reducing the number of cycles allows decrease the operating time of the machine, resulting in reduced spending on electricity used during the tests. This research aimed to investigate, with the aid of the analysis of variance (ANOVA), the influence of the use of three load cycles to obtain the modulus of elasticity in compression parallel to grain (Ec0), in tensile parallel to the grain (Et0), i

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6

Morita, Keiji, Shinji Yoshihara, and Takashi Oka. "Effect of Microstructure on Crack of Al-Mg-Si Alloy Extrusions during Axial Compression." Materials Science Forum 519-521 (July 2006): 895–900. http://dx.doi.org/10.4028/www.scientific.net/msf.519-521.895.

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Effect of microstructure on micro-cracking behavior of Al-Mg-Si alloy extrusions during axial compressive deformation was studied. Extrusions of Al-Mg-Si alloys with two different compositions were used for the mechanical tests and microstructure observation. Compressive loads were applied parallel to the axes of the tubular specimens with rectangular cross section. As deformation proceeded, the specimens changed their shape into bellows-like ones. Specimens with finer grains showed higher critical strength and strain for crack initiation. Microscopic observation showed that cracks initiated a

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7

Hamid, Nur Hasmiza Abdul, Mansur Ahmad, and Mohd Nazip Suratman. "Bending and Compression Properties of Malaysian Medium Hardwood in Orthotropic Directions Kelat (Syzygium spp.)." Applied Mechanics and Materials 330 (June 2013): 938–41. http://dx.doi.org/10.4028/www.scientific.net/amm.330.938.

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Wood behaves differently in three independent orthotropic directions, namely radial, tangential and longitudinal. Determination of mechanical properties of wood and the study on the orthotropic behavior could enhance effective utilization of wood as construction material. Kapur and Kelat are two commercial medium hardwoods that are found abundantly in the east-coast of Malaysia. The purpose of the study is to determine the variation of bending and compression strength properties of Kapur and Kelat in three different anatomical directions. Bending and compression tests on small clear specimens

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8

R. N. Palomar. "VARIABILITY OF SOME MECHANICAL PROPERTIES OF SAN RAMON TALL VARIETY OF COCONUT." CORD 10, no. 01 (1994): 34. http://dx.doi.org/10.37833/cord.v10i01.279.

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The natural variation of some strength properties of about 80‑year old brown‑and green‑pigmented San Ramon variety of coconut was investigated. The properties were determined from tests on small clear specimens in the air dry condition with an average moisture content of 16.98%. The mechanical properties studied include modulus of rupture, stress at elastic limit and modulus of elasticity in static bending, maximum crushing strength in compression parallel to grain, stress at elastic limit and in compression perpendicular to grain, and shear parallel to grain.  The brown‑pigmented

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9

Liu, Pengcheng, Qishi Zhou, Feiyang Fu, and Wei Li. "Effect of Bamboo Nodes on the Mechanical Properties of P. edulis (Phyllostachys Edulis) Bamboo." Forests 12, no. 10 (2021): 1309. http://dx.doi.org/10.3390/f12101309.

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In the context of global sustainable development, the use of natural and renewable bamboo as a building material is of great significance for building engineering. As an important part of bamboo, there is still a lack of systematic research on the effect of bamboo nodes on the mechanical properties of bamboo. In this paper, compression parallel to the grain of the bamboo, bending, tensile parallel to the grain, shear parallel to the grain, compression perpendicular to the grain and tensile perpendicular to the grain tests of an entire bamboo culm of P. edulis bamboo were carried out, and the e

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10

Ismaili, Gaddafi, Badorul Hisham Abu Bakar, and Khairul Khuzaimah Abdul Rahim. "Basic and Grade Stress for Some Timber in Sarawak." Journal of Civil Engineering, Science and Technology 2, no. 2 (2011): 35–38. http://dx.doi.org/10.33736/jcest.92.2011.

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Strength properties’ tests are conducted in the small clear sample. This paper aim to acquire the basic and grade stresses of some fast growing species thus identifies its strength group. Thus, the information of wood properties from different species and condition are acquired from strength property's test. The required information namely, bending parallel to the grain, compression stress parallel to grain, shear parallel to grain and modulus of elasticity. The condition of the trees which is referred to green and air-dry condition. Three different species which are referred to exotic species

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11

Branco, Luiz A. Melgaço N., Eduardo Chahud, André Luis Christoforo, Francisco Antonio Rocco Lahr, Rosane A. G. Battistelle, and Ivaldo D. Valarelli. "Influence of Moisture Content in some Mechanical Properties of Two Brazilian Tropical Wood Species." Advanced Materials Research 1025-1026 (September 2014): 42–45. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.42.

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This study aimed, with the aid of analysis of variance (ANOVA), to investigate and quantify the influence of moisture ranging between 12% and over 30% (fiber saturation) on the mechanical properties: strength and modulus of elasticity in compression and in tension parallel to grain; modulus of rupture and modulus of elasticity in static bending; shear strength parallel to grain considering wood species Ipê (Tabebuia sp) and Angelim Araroba (Vataireopsis araroba). Tests were performed according to the assumptions and calculating methods Brazilian standard ABNT NBR 7190, Anexx B, totalizing 400

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12

Topaloglu, Elif. "Effect of accelerated weathering test on selected properties of bamboo, Scots pine and Oriental beech wood treated with waterborne preservatives." Drvna industrija 70, no. 4 (2019): 391–98. http://dx.doi.org/10.5552/drvind.2019.1855.

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This paper investigates the changes in density, compression strength parallel to grain, static modulus of rupture and modulus of elasticity of untreated (control) and waterborne-treated bamboo (Phyllostachys bambusoides), Scots pine (Pinus sylvestris) and Oriental beech (Fagus orientalis) specimens subjected to accelerated weathering using an accelerated weathering chamber for 672 hours. Wolmanit-CB (CCB), tanalith-E (Tan-E), amine copper quat-1900 (ACQ) and boric acid-borax (BB) were used as waterborne preservatives. The retention value of bamboo specimens was lower than that of wood specimen

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13

Ismaili, Gaddafi, Khairul Khuzaimah Abdul Rahim, Alik Duju, Iskanda Openg, and Zurina Ismaili. "Strength Classification of Aras as Fast-Growing Indigenous Species Timber in Sarawak." Applied Mechanics and Materials 695 (November 2014): 617–21. http://dx.doi.org/10.4028/www.scientific.net/amm.695.617.

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Strength properties’ tests are conducted in the form of small clear sample. This paper aimed to acquire the strength group of fast-growing indigenous species of Aras and exotic species of Acacia mangium. Thus, the information of strength properties of species is acquired from strength property's test at green and air-dry conditions. The required information namely, bending parallel to grain, compression stress parallel to grain, shear parallel to grain and modulus of elasticity. The ultimate stresses obtained from strength properties of the species is to be converted into basic and grade stres

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14

Xavier, J., A. M. P. de Jesus, J. J. L. Morais, and J. M. T. Pinto. "Stereovision measurements on evaluating the modulus of elasticity of wood by compression tests parallel to the grain." Construction and Building Materials 26, no. 1 (2012): 207–15. http://dx.doi.org/10.1016/j.conbuildmat.2011.06.012.

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15

Xie, Qifang, Lipeng Zhang, Zhenglei Yang, Long Wang, and Yaopeng Wu. "Behavior of Chinese Dahurian Larch Wood after High-Temperature Exposure: Degradation of Mechanical Properties and Damage Constitutive Model." Advances in Materials Science and Engineering 2018 (September 12, 2018): 1–10. http://dx.doi.org/10.1155/2018/8614740.

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Wood has been extensively used in Chinese ancient buildings, and it is important to clearly understand the mechanical properties of wood after exposure to elevated temperatures. In this paper, three kinds of tests with 102 clear wood specimens fabricated with Chinese Dahurian larch for each kind of test were conducted. The residual compressive strength, tensile strength, and shear strength parallel to grain of specimens after exposure to different temperatures (100°C, 150°C, 200°C, and 250°C) with various exposure times (15 min, 30 min, and 45 min) and different cooling methods (natural coolin

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16

Almeida, Diego Henrique de, and Antonio Alves Dias. "COMPARISON BETWEEN TEST METHODS TO DETERMINE WOOD EMBEDMENT STRENGTH PARALLEL TO THE GRAIN." Revista Árvore 40, no. 4 (2016): 741–48. http://dx.doi.org/10.1590/0100-67622016000400018.

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ABSTRACT This study compares the test methods according to the ABNT NBR 7190:1997, EN 383:2007, ASTM D5764:2007, EUROCODE 5:2004, NDS:2001 standards in order to provide support to establish a new test method for determining the embedment strength of wood parallel to the grain. Parallel-to-grain tests were carried out for six wood species (Schizolobium amazonicum; Pinus elliottii; Pinus oocarpa; Hymenaea spp.; Lyptus(r): hybrid Eucalyptus grandis and Eucalyptus urophylla, and Goupia glabra) using four diameters (8 mm, 10 mm, 12 mm and 16 mm) for the metal pin fasteners (bolts). The experimental

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17

Asano, Mayu, Motohiro Yuasa, Hiroyuki Miyamoto, Tatsuya Tanaka, Can Erdogan, and Tuncay Yalçinkaya. "Potential of High Compressive Ductility of Ultrafine Grained Copper Fabricated by Severe Plastic Deformation." Metals 10, no. 11 (2020): 1503. http://dx.doi.org/10.3390/met10111503.

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Severe plastic deformation (SPD) can fabricate high-strength materials by forming an ultrafine grained (UFG) microstructure. Low elongation to failure of UFG materials in tensile tests, which has often been regarded as a measure of ductility of materials, has been attributed to low strain hardening of UFG structures where dislocation slip and its accumulation is very limited. In the present work, it is shown that the compressive extensibility of UFG materials can be comparable or potentially superior to that of annealed materials by using a parallel round-bar compression (PRBC) test which was

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18

Yang, J. L., and Y. Fortin. "Evaluating Strength Properties of Pinus radiata from Ultrasonic Measurements on Increment Cores." Holzforschung 55, no. 6 (2001): 606–10. http://dx.doi.org/10.1515/hf.2001.099.

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Summary Static bending tests were conducted on seasoned plantation-grown Pinus radiata D. Don specimens. After the tests, core specimens of two different sizes (ø 10 × 30 mm and ø 10 × 20 mm) and small clear specimens of 20 × 20 × 60 mm were taken from intact zones of the post-test specimens. Ultrasonic measurements were made on the core specimens and the apparent longitudinal dynamic modulus of elasticity (ELD) calculated. The small clear specimens were subjected to parallel-to-grain compression tests. The coefficient of determination was 0.85 between the static bending modulus of elasticity

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19

Okada, Yasuhiko, Kyoji Sassa, and Hiroshi Fukuoka. "Undrained shear behaviour of sands subjected to large shear displacement and estimation of excess pore-pressure generation from drained ring shear tests." Canadian Geotechnical Journal 42, no. 3 (2005): 787–803. http://dx.doi.org/10.1139/t05-017.

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Undrained shear behaviour of fine silica and weathered granitic sand subjected to large shear displacement is examined. Parallel experiments using ring shear and the triaxial compression tests on soil specimens through a wide range of initial void ratios were conducted to investigate undrained shear strength as the key factor in the flow-like motion of landslides. The steady-state undrained shear strengths achieved in ring shear tests were, in general, smaller than those in the triaxial compression tests, probably because of the excess pore-pressure generation by grain crushing within the shea

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20

Wang, Xiping, Deborah Page-Dumroese, Martin F. Jurgensen, and Robert J. Ross. "Field assessment of wood stake decomposition in forest soil." Holzforschung 61, no. 5 (2007): 605–10. http://dx.doi.org/10.1515/hf.2007.072.

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Abstract A pulse-echo acoustic method was investigated for evaluating wood stake decomposition in the field. A total of 58 wood stakes (29 loblolly pine, Pinus taeda, and 29 aspen, Populus tremuloides) that were vertically installed (full length) in forest soils were non-destructively tested by means of a laboratory-type acoustic measurement system. The same acoustic measurements were also conducted on the wood stakes after they were removed from the soil. Compression (parallel to grain) tests were then performed on the stakes in the laboratory to obtain residual elastic and strength propertie

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21

Xing, Jie, Xu Yue Yang, Hiromi Miura, and Taku Sakai. "Low Temperature Superplasticity of Fine-Grained Magnesium Alloy AZ31." Advanced Materials Research 15-17 (February 2006): 467–72. http://dx.doi.org/10.4028/www.scientific.net/amr.15-17.467.

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Low temperature superplasticity (LTSP) was studied in a fine-grained magnesium alloy AZ31 which was processed by multi-directional forging (MDF) under decreasing temperature conditions. Tensile specimens were cut from MDFed Mg alloy parallel to the final compression axis (CA), and the tensile axis perpendicular to the CA. Tensile tests was carried out at temperatures from 393K to 473K and at various strain rates. Superplasticity appears even at a low temperature of 393K with a stress exponent (n) of about 0.56 and a total elongation of 370%. The relative large stress exponent can be connected

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22

Quenneville, Pierre, Alain Charron, and Karl Van Dalen. "Effect of end distance on the resistance of split ring connectors in timber joints loaded in compression." Canadian Journal of Civil Engineering 20, no. 5 (1993): 863–71. http://dx.doi.org/10.1139/l93-112.

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An experimental program was undertaken to verify the end distance requirements in the Canadian standard for engineering design in wood for split ring connectors in joints loaded in compression. In a laboratory study, 48 joints of the Douglas fir-larch species group using 63 mm diameter split rings, 45 joints of the Douglas fir-larch species group using 102 mm diameter split rings, and 51 joints of the spruce-pine-fir species group using 63 mm diameter split rings were loaded to failure in compression. The split ring end distance varied between 50 and 200 mm for joints with 63 mm diameter split

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23

Villarino, Alberto, Jorge López-Rebollo, and Natividad Antón. "Analysis of Mechanical Behavior through Digital Image Correlation and Reliability of Pinus halepensis Mill." Forests 11, no. 11 (2020): 1232. http://dx.doi.org/10.3390/f11111232.

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The mechanical behavior of test pieces extracted from two specimens of Pinus halepensis Mill., from the same geographical area and close to each other, was examined in this study. Using a methodology based on Digital Image Correlation (DIC) and implemented during compression strength testing, the modulus of elasticity in compression parallel to the grain (MOEc) was obtained. In addition, the value of compressive strength (MORc) was obtained for this type of wood. The research was complemented with a reliability study, determined using the Weibull modulus, from the MORc values. A microstructura

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24

Hunger, Frank, Mislav Stepinac, Vlatka Rajčić, and Jan-Willem G. van de Kuilen. "Pull-compression tests on glued-in metric thread rods parallel to grain in glulam and laminated veneer lumber of different timber species." European Journal of Wood and Wood Products 74, no. 3 (2016): 379–91. http://dx.doi.org/10.1007/s00107-015-1001-2.

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25

Gong, Meng, and Ian Smith. "Effect of stress levels on compressive low-cycle fatigue behaviour of softwood." Holzforschung 59, no. 6 (2005): 662–68. http://dx.doi.org/10.1515/hf.2005.106.

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Abstract Low-cycle fatigue (LCF) of spruce under parallel-to-grain compression was investigated to simulate the damage that occurs during extreme events such as hurricanes. Load control was used, with peak stress levels of 75%, 85% and 95% of static compressive strength (C max). Changes in the residual cyclic modulus, cyclic creep strain and modified work density were correlated with the number of load cycles to assess their suitability as damage indicators. Creep tests were also carried out and the strain compared with cyclic creep strain under LCF load. Fatigue and creep tests had a total du

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26

Altuhafi, Fatin, Béatrice A. Baudet, and Peter Sammonds. "The mechanics of subglacial sediment: an example of new “transitional” behaviour." Canadian Geotechnical Journal 47, no. 7 (2010): 775–90. http://dx.doi.org/10.1139/t09-136.

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A series of isotropic compression tests and drained and undrained triaxial compression tests have been performed on glacial sediment from Iceland. Langjökull sediment, which is well graded, is thought to have reached a critical grading during deposition and transportation. Multiple parallel normal compression lines (NCLs) were found, but a unique critical state line (CSL) could be identified. This is unlike other so-called “transitional” soils, whose grading varies between reasonably well graded to gap graded, which tend to have distinct NCLs and critical state lines depending on the specimen

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27

Domínguez-Rodríguez, Arturo, Fernando Guiberteau, and Manuel Jimenez-Melendo. "Heterogeneous junction of yttria partially stabilized zirconia by superplastic flow." Journal of Materials Research 13, no. 6 (1998): 1631–36. http://dx.doi.org/10.1557/jmr.1998.0224.

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Layers of different composition and/or grain size of yttria partially stabilized zirconia (YPSZ) have been compressed, with the stress perpendicular to the interface of the layers and temperature of 1400 °C, in order to produce a joint using the microstructural feature of superplasticity found in fine-grained ceramics. The pieces joined have been characterized by scanning electron microscopy (SEM), showing a clean interface with no cavitation. The stiffness of the junction was checked using Vickers indentation at room temperature at the interface and compression tests at the same conditions (T

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28

Schneider, Mike, Felicitas Werner, Dennis Langenkämper, Christian Reinhart, and Guillaume Laplanche. "Effect of Temperature and Texture on Hall–Petch Strengthening by Grain and Annealing Twin Boundaries in the MnFeNi Medium-Entropy Alloy." Metals 9, no. 1 (2019): 84. http://dx.doi.org/10.3390/met9010084.

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Among equiatomic alloys of the Cr-Mn-Fe-Co-Ni system, MnFeNi was shown to exhibit a strong anti-invar behavior but little is known regarding its mechanical properties. The objective of the present study is to investigate Hall–Petch strengthening by grain and annealing twin boundaries in MnFeNi. For this purpose, seven different grain sizes between 17 and 216 µm were produced. Mean grain sizes (excluding annealing twin boundaries) and crystallite sizes (including them) were determined using the linear intercept method. Overall, 25% of the boundaries were found to be annealing twin boundaries re

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Elkamhawy, Elsayed, Bo Zhou, and Huabin Wang. "Mineralogy, Micro-fabric and the Behavior of the Completely Decomposed Granite Soils." Civil Engineering Journal 5, no. 12 (2019): 2762–72. http://dx.doi.org/10.28991/cej-2019-03091447.

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The main objective of this study is to investigate the impact of the micro-fabric and soil mineralogy on the overall macro-behavior of the completely decomposed granite soil through a set of drained and undrained triaxial shearing and isotropic compression tests on a medium-coarse grading completely decomposed granite soil. The mineral composition of the soil was a substantial factor governing the compressive behavior. The soil compressibility increased significantly in the case of existence crushable and weak minerals within the soil minerals like fragile feldspar, as well as the high content

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Bui, Quang Hien, Guy F. Dirras, A. Hocini, et al. "Microstructure and Mechanical Properties of Commercial Purity HIPed and Crushed Aluminum." Materials Science Forum 584-586 (June 2008): 579–84. http://dx.doi.org/10.4028/www.scientific.net/msf.584-586.579.

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Ultrafine-grained aluminum microstructures were processed from commercial purity powder by combining hot isostatic pressing (HIP) and dynamic severe plastic deformation (DSPD). After the first step, the bulk consolidated material showed a random texture and homogeneous microstructure of equiaxed grains with an average size of 2µm. The material was then subsequently impacted, using a falling weight at a strain rate of 300s-1. The resulting material showed a microstructure having an average grain size of about 500 nm with a strong gradient of fiber-like crystallographic texture parallel to the i

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Olson, Scott M., and Timothy D. Stark. "Use of laboratory data to confirm yield and liquefied strength ratio concepts." Canadian Geotechnical Journal 40, no. 6 (2003): 1164–84. http://dx.doi.org/10.1139/t03-058.

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A laboratory database of triaxial compression test results was collected to examine the use of strength ratios for liquefaction analysis. Specifically, the database was used to: (i) validate the yield strength ratio concept (or yield friction angle); (ii) demonstrate the parallelism of the consolidation line and steady state line of many sandy soils; and (iii) validate the liquefied strength ratio concept. The yield strength ratio of contractive sandy soils in triaxial compression ranges from approximately 0.29 to 0.42 (corresponding to yield friction angles of 16°23°), while the yield streng

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32

Nakashima, Shoichi, Akihisa Kitamori, and Kohei Komatsu. "Load Carrying Capacity of Drift Pin Joint of Cross Laminated Timber (CLT) with Steel Insert Plate." Wood Research Journal 4, no. 1 (2017): 87–93. http://dx.doi.org/10.51850/wrj.2012.3.2.87-93.

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Cross Laminated Timber (CLT) is a structural plate element which is approved in Europe and is intended to be approved in Japan. It consists of small dimension laminae, in which laminae parallel and perpendicular to longitudinal direction are interlaminated. We performed tensile tests for the drift pin joint with steel insert plate. Specimen consisted of CLT was made from Japanese cedar laminae (thickness of laminae t = 30mm, five laminae were layered), with steel drift pin plate. Odd-numbered layers were parallel to the longitudinal axis, and even-numbered layers were perpendicular to the long

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33

Derikvand, Mohammad, Nathan Kotlarewski, Michael Lee, Hui Jiao, and Gregory Nolan. "Characterisation of Physical and Mechanical Properties of Unthinned and Unpruned Plantation-Grown Eucalyptus nitens H.Deane & Maiden Lumber." Forests 10, no. 2 (2019): 194. http://dx.doi.org/10.3390/f10020194.

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The use of fast-growing plantation eucalypt (i.e., pulpwood eucalypt) in the construction of high-value structural products has received special attention from the timber industry in Australia and worldwide. There is still, however, a significant lack of knowledge regarding the physical and mechanical properties of the lumber from such plantation resources as they are mainly being managed to produce woodchips. In this study, the physical and mechanical properties of lumber from a 16-year-old pulpwood Eucalyptus nitens H.Deane & Maiden resource from the northeast of Tasmania, Australia was

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34

de Jaeger, J., Denis Solas, Thierry Baudin, Olivier Fandeur, J. H. Schmitt, and Colette Rey. "INCONEL 718 Recrystallization in the Delta Supersolvus Domain." Advanced Materials Research 409 (November 2011): 751–56. http://dx.doi.org/10.4028/www.scientific.net/amr.409.751.

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An experimental study of compression tests at high temperature and different engineering strains was carried out on INCONEL 718 above the delta phase solvus. The objective is to investigate the mechanical behaviour in relation with the microstructure evolution. After deformation the samples were quenched with helium gas to avoid metadynamic recrystallization (MDRX). The quench efficiency is discussed by microstructural and hardness comparison. During forging process and without MDRX, there is generally a competition between deformation and dynamic recrystallization state (DRX) i.e. a dependenc

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Bari, Ehsan, Hamid Reza Taghiyari, Behbood Mohebby, et al. "Mechanical properties and chemical composition of beech wood exposed for 30 and 120 days to white-rot fungi." Holzforschung 69, no. 5 (2015): 587–93. http://dx.doi.org/10.1515/hf-2014-0057.

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Abstract The effects of exposing specimens of Oriental beech [Fagus sylvatica subsp. orientalis (Lipsky) Greuter and Burdet] to the white-rot fungi Pleurotus ostreatus (Jacq.: Fr.) Kummer and Trametes versicolor (L.: Fr.) Pilát strain 325 have been studied concerning the mechanical properties and chemical composition in terms of carbohydrates, cellulose, and lignin. Biological decay tests were carried out in accordance with the EN 113 standard specifications for 30 and 120 days. P. ostreatus had nearly the same deteriorating effects on the mechanical properties and chemical composition as that

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Millett, Jeremy, George Gray, Glenn Whiteman, Saryu Fensin, and Gareth Owen. "The Mechanical Response of Pre-Shocked Aluminium Single Crystals." EPJ Web of Conferences 183 (2018): 02010. http://dx.doi.org/10.1051/epjconf/201818302010.

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The behaviour of metals under mechanical loading, including shock loading conditions is strongly influenced by effects such as impurity levels, grain size, initial dislocation density and texture. The work discussed here is part of a wider study on the effects of orientation of aluminium single crystals to one dimensional shock loading, including the Hugoniot Elastic Limit and spall strength. In this work, specimens with three principle directions (<100>, <110> and <111>) parallel to the loading axis have been shock loaded and recovered under conditions of purely one-dimensio

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37

Milch, Jaromír, Jan Tippner, Václav Sebera, and Martin Brabec. "Determination of the elasto-plastic material characteristics of Norway spruce and European beech wood by experimental and numerical analyses." Holzforschung 70, no. 11 (2016): 1081–92. http://dx.doi.org/10.1515/hf-2015-0267.

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Abstract Experimental and numerical analyses are presented concerning of compression tests parallel and perpendicular to the grain, three-point bending, and double-shear joints in compliance with the relevant test standards (ASTM D2395, BS 373, EN 383 and EN 26891). Woods of Norway spruce (Picea abies L. Karst.) and European beech (Fagus sylvatica L.) were tested to describe their non-linear behavior. Elasto-plastic material models were the basis for the finite-element (FE) analyses with the input of own experimental data and those of the literature. The elasto-plastic material model with non-

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Raposo, Patricia, João Martins, José Correia, et al. "Characterization of the mechanical behaviour of wooden construction materials from “quinta lobeira de cima”." International Journal of Structural Integrity 9, no. 3 (2018): 396–410. http://dx.doi.org/10.1108/ijsi-06-2017-0039.

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Purpose The antique structures are part of the inheritance that our elders left, being important to preserve their memories. It is important to preserve, rehabilitate and restore the historic buildings protecting the cultural patrimony, attending to the actual comfort and habitability requirements. It is necessary to study the behaviour of the various elements that compose antique structures (masonry and wood) in order to develop assessment measures according to the characteristics of the original materials. The paper aims to discuss these issues. Design/methodology/approach An experimental ca

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Chahud, Eduardo, Luiz Antônio Melgaço Nunes Branco, André Luis Christoforo, Francisco Antonio Rocco Lahr, Rosane Aparecida Gomes Battistelle, and Ivaldo D. Valarelli. "Evaluation of Longitudinal Modulus of Elasticity in Wood Species for Structural Application." Advanced Materials Research 1025-1026 (September 2014): 192–95. http://dx.doi.org/10.4028/www.scientific.net/amr.1025-1026.192.

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1024x768 This research aimed to investigate possible differences in values of longitudinal modulus of elasticity for wood species usually employed for structural purposes, as Castanheira (Bertholletia excelsa), Cambará (Erisma uncinatum), Cumaru (Dipteryx odorata), Jatobá (Hymenaea stilbocarpa), Garapa (Apuleia leiocarpa) and Peroba Rosa (Aspidosperma polyneuron), obtained from compression and tension parallel to grain, and static bending tests. Recommendations of the Brazilian standard ABNT NBR 7190:1997, Annex B, were followed. Statistical analysis results for the cited properties, had equiv

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Stone, B. M., I. J. Jordaan, J. Xiao, and S. J. Jones. "Experiments on the damage process in ice under compressive states of stress." Journal of Glaciology 43, no. 143 (1997): 11–25. http://dx.doi.org/10.3189/s002214300000277x.

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AbstractDuring ice-structure interaction, ice will fail in a brittle manner dominated by two processes. The first corresponds to the formation of macrocracks and the consequent spalling-off of large ice pieces. The second includes an intense shear-damage process in zones, termed critical zones, where high pressures are transmitted to the structure. The shear-damage process results in microstructural changes including microcrack formation and recrystallization. A range of tests on laboratory-prepared granular ice have been conducted to determine the fundamental behaviour of ice under various st

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Stone, B. M., I. J. Jordaan, J. Xiao, and S. J. Jones. "Experiments on the damage process in ice under compressive states of stress." Journal of Glaciology 43, no. 143 (1997): 11–25. http://dx.doi.org/10.1017/s002214300000277x.

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AbstractDuring ice-structure interaction, ice will fail in a brittle manner dominated by two processes. The first corresponds to the formation of macrocracks and the consequent spalling-off of large ice pieces. The second includes an intense shear-damage process in zones, termed critical zones, where high pressures are transmitted to the structure. The shear-damage process results in microstructural changes including microcrack formation and recrystallization. A range of tests on laboratory-prepared granular ice have been conducted to determine the fundamental behaviour of ice under various st

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42

Sheng, Baolu, Yuling Bian, Dong He, and Aiping Zhou. "An Inelastic Theoretical Model regarding the Load-Carrying Capacity of PSL Bending Component." Advances in Civil Engineering 2021 (March 11, 2021): 1–8. http://dx.doi.org/10.1155/2021/6677450.

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Parallel strand lumber (PSL) is an attractive structural wood composite which may have prospective use in building constructions. Conducting nonlinear analysis for the bending of PSL beams is a critical step in the determination of ultimate strength and deflection of them, which is an essential requirement of the building design philosophy based on probability of ultimate state. For the purposes of this article, an inelastic theoretical model regarding the load-carrying capacity of the PSL bending component has been developed. Based on the uniaxial loading tests, the stress-strain behaviors of

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Al-Saadi, Munir, Wangzhong Mu, Christopher N. Hulme-Smith, Fredrik Sandberg, and Pär G. Jönsson. "Effect of Trace Magnesium Additions on the Dynamic Recrystallization in Cast Alloy 825 after One-Hit Hot-Deformation." Metals 11, no. 1 (2020): 36. http://dx.doi.org/10.3390/met11010036.

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Alloy 825 is widely used in several industries, but its useful service life is limited by both mechanical properties and corrosion resistance. The current work explores the effect of the addition of magnesium on the recrystallization and mechanical behavior of alloy 825 under hot compression. Compression tests were performed under conditions representative of typical forming processes: temperatures between 1100 and 1250 °C and at strain rates of 0.1–10 s−1 to a true strain of 0.7. Microstructural evolution was characterized by electron backscattered diffraction. Dynamic recrystallization was f

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Fukuda, Hidetsugu, Hiroyuki Takahashi, Koichi Kuramoto, and Takayoshi Nakano. "Effect of Energy Density of Incident Beam on Mechanical Property of Titanium Alloy Products Fabricated by Electron Beam Melting (EBM) Method." Materials Science Forum 706-709 (January 2012): 488–91. http://dx.doi.org/10.4028/www.scientific.net/msf.706-709.488.

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Electron beam melting (EBM) is a promising fabrication technique for directly producing metal products from powder as the starting material. Powders are provided as a thin layer (~100 μm) and melted layer by layer with an electron beam. In this study, the effects of the energy density of the incident beam on the mechanical properties of Ti–6 mass% Al–4 mass% V alloy products fabricated through EBM were examined. The products were fabricated using an electron beam at various energy densities depending on the electron beam current. The microstructures and crystallographic orientations were obser

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KUWAMURA, Hitoshi. "CREEP LIMIT OF WOOD UNDER PARALLEL-TO-GRAIN COMPRESSION." Journal of Structural and Construction Engineering (Transactions of AIJ) 77, no. 681 (2012): 1691–700. http://dx.doi.org/10.3130/aijs.77.1691.

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Zhu, Liang, Hugo Ricardo Zschommler Sandim, Marc Seefeldt, and Bert Verlinden. "Grain Subdivision of a Nb Polycrystal Deformed by Successive Compression Tests." Materials Science Forum 667-669 (December 2010): 373–78. http://dx.doi.org/10.4028/www.scientific.net/msf.667-669.373.

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To understand and model grain refinement in severe plastic deformation, some analysis of Nb single crystals has been carried out in previous work. To bridge the gap with normal polycrystalline materials, supplementary experiments on large polycrystals, deformed at moderate strains appear to be necessary to explain the grain subdivision step by step. In the present work, successive uniaxial compression tests have been carried out on a large grained Niobium polycrystal up to height reductions of 30% with small strain increments. Electron backscatter diffraction (EBSD) analysis was done after eac

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DASHTI, Hadi, Mahdi SHAHVERDI, Seyed Ali HAJI MIRZA TAYEB, and Hossein LOTFIZADEH. "Impact of Kiln Drying Schedule upon Some Mechanical Properties of Poplar Wood." Notulae Scientia Biologicae 4, no. 3 (2012): 158–62. http://dx.doi.org/10.15835/nsb437929.

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In the present research, the effect of three kiln drying schedules of T5-D2, T5-D4, and T5-D6 on poplar wood mechanical properties was investigated. The lumber was dried in a convectional laboratory kiln and then the compression strength in a parallel and perpendicular direction toward the grain, hardness, and nail withdrawal resistance were evaluated. The obtained results indicated with change from schedule T5-D2 to T5-D4, compression strength whether parallel or perpendicular to grain, hardness in tangential, radial, and transverse surfaces as well as, nail withdrawal resistance in tangentia

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Sun, Yao Xing, Yi Xing Liu, and Jiu Yin Pang. "Variance of the Mechanics Properties of Populus Ussuriensis Kom Lumber Compressed by Rollers." Advanced Materials Research 129-131 (August 2010): 1356–60. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.1356.

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The mechanics properties of P. ussuriensis Kom lumber compressed by rollers decreases a little, the loss of which in tangential compression is more than that in radial one. The loss of mechanics strength increases with the rise of the compression rate. The Compressive strength parallel to the grain of wood is from 2.391% to－4.589%, the Shearing strength parallel to the grain is from－2.071% to－14.213%, the Tensile strength parallel to the grain is from 2.246% to－11.535%, the Tensile strength perpendicular to the grain is from－0.217% to－16.877%, the Cleavage strength of wood is from 1.785% to－16

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Centofante, Lisa, Alberto Monett, and Giovanni Meneghetti. "High Temperature Compression Tests of A Commercial Isotropic Ultrafine Grain Graphite." Advanced Materials Science and Technology 2, no. 1 (2020): 45–59. http://dx.doi.org/10.37155/2717-526x-0201-5.

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Miyahara, Yuichi, N. Emi, Koji Neishi, et al. "Microstructures and Mechanical Properties of Mg Alloy after Severe Torsion Straining Process." Materials Science Forum 503-504 (January 2006): 949–54. http://dx.doi.org/10.4028/www.scientific.net/msf.503-504.949.

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Grain refinement is attempted using severe plastic deformation (SPD) through the severe torsion straining process (STSP) which we have developed recently. The STSP is a continuous process for grain refinement without requirement of any die. In this study, an AZ61 Mg alloy was subjected to STSP at a temperature of 573 K with a rotation speed of 10 rpm and a moving speed of 200 mm/min. With this process, an initial grain size of ~20 μm was reduced to ~2~3 μm. Room temperature compression tests revealed that there were no cracks after 15% of compression for the STSP sample whereas fracture occurr

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