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Journal articles on the topic 'Static bending strength'

Author: Grafiati

Published: 2 June 2025

Last updated: 31 July 2025

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1

Zhang, Yang, and Zhi Ming Yu. "Predicted Model of Section Stress Distribution and Bending Strength of Fiberboard Based on Vertical Density Profile." Materials Science Forum 704-705 (December 2011): 424–33. http://dx.doi.org/10.4028/www.scientific.net/msf.704-705.424.

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To study the impact of VDP on the bending process of fiberboard, this paper deeply researched into the dynamic changes of section stress distribution of fiberboard during the process of loading and bending and built a static bending strength predicting model, which is based on the piecewise function by simulating fiberboard VDP, theory of elasticity and plasticity, lamella inter-bedded theory and VDP model. The results show: The bending process of fiberboard can be divided into two stages which are elasticity period and elasticity-plasticity period. The latter includes both elasticity region a

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2

Brzeziński, Karol, Grzegorz Adamczewski, and Paweł Tutka. "Wpływ obciążeń cyklicznych na wytrzymałość statyczną piasku związanego cementem – ujęcie jakościowe." Roads and Bridges - Drogi i Mosty 16, no. 1 (2017): 37–46. http://dx.doi.org/10.7409/rabdim.017.003.

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The main purpose of the paper is to evaluate the effect of cyclic loading on the static bending strength Rb of cement-bound sand (CBS). The mixture contained graded standard quartz sand bound with cement added at a proportion of 10% of the weight of sand. The main part of the experimental research were three-point bending tests performed on rectangular specimens. The specimens were subjected to cyclic pre-loading with different numbers of cycles and different bending force values. Strength tests were then conducted on pre-loaded specimens and the results were compared with non-preloaded specim

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Hao, Chengyi, Kaiqiang Zhang, Shuangbao Zhang, and Wei Song. "Modification of Wood Flour/Phenolic Resin Composites with Bamboo Pulp Residue." Forest Products Journal 68, no. 3 (2018): 211–15. http://dx.doi.org/10.13073/fpj-d-18-00016.

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Abstract The purpose of this paper is to discuss the influence of different proportions of bamboo pulp residue on the bending strength, the static bending strength, the water absorption rate, and the microstructure of wood flour/phenolic resin composites. The level of bamboo pulp residue ranged from 0 to 30 percent. According to the optimum technological parameters of the pretest, the resin content, the molding temperature, and the molding time were controlled within 51 to 54 percent, 152°C to 160°C, and 51 to 60 s/mm, respectively. Compared with the control group, there were remarkable improv

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4

Kinawy, Moustafa, Richard Butler, and Giles W. Hunt. "Bending strength of delaminated aerospace composites." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 370, no. 1965 (2012): 1780–97. http://dx.doi.org/10.1098/rsta.2011.0337.

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Buckling-driven delamination is considered among the most critical failure modes in composite laminates. This paper examines the propagation of delaminations in a beam under pure bending. A pre-developed analytical model to predict the critical buckling moment of a thin sub-laminate is extended to account for propagation prediction, using mixed-mode fracture analysis. Fractography analysis is performed to distinguish between mode I and mode II contributions to the final failure of specimens. Comparison between experimental results and analysis shows agreement to within 5 per cent in static pro

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Yao, Wei, Kaiwen Xia, and Ajay Kumar Jha. "Experimental study of dynamic bending failure of Laurentian granite: loading rate and pre-load effects." Canadian Geotechnical Journal 56, no. 2 (2019): 228–35. http://dx.doi.org/10.1139/cgj-2017-0707.

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In deep underground rock engineering projects, rocks are under static pre-load and they may further experience dynamic load due to earthquakes or production blasts. It is thus desirable to consider dynamic failure of rocks subjected to static pre-load. Besides, bending load is commonly encountered near underground openings. Therefore, this study considers the effect of the pre-load on the dynamic bending strength of Laurentian granite (LG). Using a modified split Hopkinson pressure bar system, the semi-circular bend (SCB) method is applied to carry out the bending tests. Five groups of SCB spe

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Schreiber, P., J. Crandall, S. Hurwitz, and G. S. Nusholtz. "Static and dynamic bending strength of the leg." International Journal of Crashworthiness 3, no. 3 (1998): 295–308. http://dx.doi.org/10.1533/cras.1998.0077.

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Matsuo, Tsuyoshi, Masayuki Nakada, and Kazuro Kageyama. "Prediction of fiber-directional flexural strength of carbon fiber-reinforced polypropylene based on time–temperature superposition principle." Journal of Composite Materials 52, no. 6 (2017): 793–805. http://dx.doi.org/10.1177/0021998317714638.

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This study verified that the time–temperature superposition principle for fiber-directional flexural strength can be applied to thermoplastic composites undergoing instantaneous fast phenomena such as impact failure and long-term phenomena such as creep failure, by constructing the time- and temperature-dependent master curve of relaxation modulus of thermoplastic resin. The master curve could be transformed to another master curve that predicts fiber-directional flexural strength of carbon fiber-reinforced thermoplastic composites based on the micro-buckling failure theory expressed mainly by

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8

TOKAJI, Keiro, Takeshi OGAWA, and Yozo KATO. "Static strength and rotating bending fatigue strength of aluminum-lithium alloys." Journal of the Society of Materials Science, Japan 39, no. 439 (1990): 400–405. http://dx.doi.org/10.2472/jsms.39.400.

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9

Konofalska, Eliza, Paweł Kozakiewicz, Włodzimierz Buraczyk, Henryk Szeligowski, and Hubert Lachowicz. "The Technical Quality of the Wood of Scots Pine (Pinus sylvestris L.) of Diverse Genetic Origin." Forests 12, no. 5 (2021): 619. http://dx.doi.org/10.3390/f12050619.

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This work contains the preliminary results of research into the technical quality of the wood from Scots pine trees of diverse genetic origin, grown on an experimental plot at the Forest Experimental Station in Rogów. The following are the parent stands, numbered: 5 (the Tucholskie Forest 130 m a.s.l.), 7 (the Napiwodzko–Ramuckie Forest 145 m a.s.l.), 10 (the Piska Forest 145 m a.s.l.), 12 (the Biała Forest 95 m a.s.l.), 13 (the Namysłowsko–Ostrzeszowskie Forest 190 m a.s.l.), 15 (the Knyszyńska Forest 165 m a.s.l.), and 16 (the Nowotarskie Forest 590 m a.s.l.). The tested wood was obtained in

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10

Подібка, Тарас. "ПОБУДОВА МАТЕМАТИЧНОЇ МОДЕЛІ МІЦНОСТІ МЕБЛЕВИХ ЩИТІВ ІЗ СКЛЕЄНИХ РЕЙОК ДЕРЕВИНИ БУКА". Forestry, Forest, Paper and Woodworking Industry 50 (13 вересня 2024): 65–76. https://doi.org/10.36930/42245006.

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It is substantiated and proposed on the basis of a system analysis to use in the technological processes of woodworking short-sized and dimensionally suitable residues in a massive form for the production of furniture boards. Furniture boards was made from beech wood, which was tested to the limit of strength during static bending. The furniture boards were made of hard-leaved species (common beech (Fagus sylvatica L.) according to the developed methodological grid of the experiment. Based on the obtained results, a mathematical (regression) model of the dependence of the strength limit during

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11

Kato, Akira. "Prevention of Fracture of Cracked Steel Bars Using Laser: Part III—Case of High Carbon Steel." Journal of Engineering Materials and Technology 110, no. 4 (1988): 319–24. http://dx.doi.org/10.1115/1.3226056.

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The effect of laser welding on prevention of the fracture of cracked shafts of a high carbon steel are presented. Static tensile strength and rotary bending fatigue strength were obtained using shaft specimens of AISI W1 which were welded by a CO2 laser around a precrack. Since the welded region became extremely hard and brittle, both the strengths of laser-welded specimens were lower than those of non-welded specimens. However, the strengths were increased higher than those of non-welded specimens after tempering the specimens. It was found that when tempered at 600°C after laser welding, the

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Takahashi, Koji, Kotoji Ando, and Shinji Saito. "Crack-Healing under Cyclic Stress and Improvement of the Resultant Fatigue Strength of Si₃N₄/SiC." Key Engineering Materials 317-318 (August 2006): 453–56. http://dx.doi.org/10.4028/www.scientific.net/kem.317-318.453.

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Si3N4/SiC composite ceramics were hot-pressed in order to investigate their crack-healing behavior under cyclic stress and the resultant static fatigue strength. Semi-elliptical surface cracks of 100 μm in surface length were made on each specimen. The pre-cracked specimens were crack-healed under a cyclic bending stress of 210MPa in air at 900, 1000, 1100, and 1200 °C. The bending strength and static fatigue strength of the crack-healed specimens were systematically investigated at each healing temperature. The specimens which has been crack-healed and static fatigue-tested at 900 and 1000 °C

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FATARAITĖ–URBONIENĖ, Eglė, Inga JUODEIKIENĖ, Darius ALBREKTAS, and Simonas MEŠKAUSKAS. "Influence of Heat Treatment on the Static Bending Strength of Spruce Wood." Materials Science 25, no. 4 (2019): 455–59. http://dx.doi.org/10.5755/j01.ms.25.4.21522.

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The goal of this investigation was to find out influence of heat treatment at low temperatures on the Lithuanian spruce wood bending strength. The influence of heating temperature and duration on the strength of spruce wood during statical bending has been investigated. The tests were carried out using samples with size of 20 ´ 20 mm in cross-section and 300 mm in length. Density of samples varied from 460 up to 500 kg/m3. The samples were heated at conditions close to those used during manufacturing process. Temperature was equal to T = 60, 80, 100 and 120 °C and heating duration was selected

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da Silveira, Emily, Tiago Hendrigo de Almeida, Diego Henrique de Almeida, André Luis Christoforo, and Francisco Antonio Rocco Lahr. "Impact Strength in Dinamic Bending as a Function of the Strength in Static Bending of Wood." International Journal of Materials Engineering 8, no. 2 (2018): 23–27. http://dx.doi.org/10.5923/j.ijme.20180802.02.

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Dziurka, Dorota, Adam Derkowski, Dorota Dukarska, Jakub Kawalerczyk, and Radosław Mirski. "The Effect of Periodic Loading of Glued Laminated Beams on Their Static Bending Strength." Materials 15, no. 11 (2022): 3928. http://dx.doi.org/10.3390/ma15113928.

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Engineered wood products (EWP) such as glulam beams are gaining more and more popularity due to several advantages resulting from the wood itself, as well as the constant search for structural materials of natural origin. However, building materials face some requirements regarding their strength. Thus, the study aimed to assess the static bending strength of structural beams produced with the use of pine wood, after the periodic loading of approximately 80 kN for a year. The manufactured beams differed in the type of facing layers, i.e., pine timber with a high modulus of elasticity and plywo

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16

Motyka, Maciej, Tomasz Tokarski, Waldemar Ziaja, and Mateusz Wedrychowicz. "The Effect of Heat Treatment on Static and Dynamic Mechanical Properties of Rapidly Solidified and Plastically Consolidated RS442 Aluminium Alloy." Key Engineering Materials 641 (April 2015): 17–23. http://dx.doi.org/10.4028/www.scientific.net/kem.641.17.

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Ultra-fine grained metallic materials are characterized by higher mechanical properties comparing with their conventional equivalents. However increase in strength under static load is not always accompanied by improved fatigue behaviour. Previous investigations on submicrocrystalline RS442 aluminium alloy produced by plastic consolidation of rapidly solidified flakes in the extrusion process revealed increase in its high cycle fatigue bending strength caused by annealing at 450°C. The aim of present studies was to evaluate the influence of heat treatment – also precipitation hardening – on st

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Titunin, Andrey, Alexey Podyachev, Sergey Tsybakin, and Yulia Dubrovina. "Influence of wood and technological factors on the strength of the finger joint in laminated constructions." Smart composite in construction 4, no. 2 (2023): 8–17. http://dx.doi.org/10.52957/2782-1919-2024-4-2-8-17.

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The paper presents the results of finger joint quality assessment at the static bending in the production of wooden laminated structures. We selected the softwood samples randomly. This study concerns with detecting of bending stress with load application in thirds of the plate span. This loading scheme allows us to make pure bending deformation for the area under study. 53.3% of the selected samples had the values of maximum bending stress satisfying the regulatory requirements. The average value of the destructive bending stress in the finger joint was 19.8 MPa, the coefficient of variation

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18

Mazaev, Alexey, and Marina Shitikova. "STATIC BENDING STRENGTH OF SANDWICH COMPOSITE PLATES WITH TETRACHIRAL HONEYCOMBS." International Journal for Computational Civil and Structural Engineering 17, no. 3 (2021): 102–13. http://dx.doi.org/10.22337/2587-9618-2021-17-3-102-113.

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The article presents a numerical strength analysis of sandwich plates with solid face layers and tetrachiral honeycomb core layer under static bending conditions. An aluminum alloy was chosen as the material of plates. For honeycomb core layers, the discretization (number of unit cells) and the relative density were varied with a constant thickness. Calculations were performed for the case of bending with rigidly clamped ends and three-point bending within the framework of the theory of elasticity by the finite element method. The strength analysis enables one to determine the load values, at

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19

Abdullaev, Seidulla, Gabit Bakyt, Ivan Bondar, Galymzhan Ashirbayev, and Ermek Baubekov. "DETERMINATION OF CRACK RESISTANCE PARAMETERS OF CONCRETE UNDER STATIC LOADING." Вестник КазАТК 130, no. 1 (2024): 38–47. http://dx.doi.org/10.52167/1609-1817-2024-130-1-38-47.

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Building structures made of concrete are widely used in the construction of buildings, structures, transport facilities. Strength is the main characteristic of concrete as a structural material. The article describes in detail the process of manufacturing concrete samples based on various binders. The experimental determination of the cubic strength of concrete and the ultimate strength of concrete during bending is considered. To determine the ultimate strength of concrete during bending, an upgraded laboratory testing facility with a maximum load of up to 10 kN was used. It has been experime

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Pecknold, David, Peter Marshall, and Justin Bucknell. "New API RP2A Tubular Joint Strength Design Provisions." Journal of Energy Resources Technology 129, no. 3 (2007): 177–89. http://dx.doi.org/10.1115/1.2748811.

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The development of the new API RP2A (22nd edition) parametric static strength prediction equations for planar circular hollow section tubular joints is described. Prediction equations are presented for brace axial, brace in-plane bending, and brace out-of-plane bending loads. The prediction equations are based on screened test databases, augmented, and extended by an extensive new series of validated nonlinear finite element simulations for nonoverlapping K joints, double tee (DT/X) joints, and T joints. The increased reliability (reduced scatter) provided by the new static strength formulatio

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21

Mirski, Radosław, Dorota Dziurka, Marcin Kuliński, Adrian Trociński, Jakub Kawalerczyk, and Ryszard Antonowicz. "Strength Properties of Structural Glulam Manufactured from Pine (Pinus sylvestris L.) Side Boards." Materials 14, no. 23 (2021): 7312. http://dx.doi.org/10.3390/ma14237312.

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The aim of this study was to assess the static bending strength of pine glulam manufactured when obtaining the main yield, i.e., structural timber or timber to be used in the production of structural glulam. Analyses were conducted on pine timber harvested from three different locations in Poland. Two beam variants were manufactured, differing in the timber arrangement, horizontal vs. vertical. It was shown that the static bending strength of beams manufactured in the vertical timber arrangement variant is slightly higher than that of beams produced from horizontally arranged layers, with the

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Jen, Yi-Ming, and Zih-He Tang. "Static bending strength assessment of sandwich panels with glass/polypropylene faces and aluminum foam cores." Modern Physics Letters B 34, no. 07n09 (2020): 2040016. http://dx.doi.org/10.1142/s0217984920400163.

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The four-point bending tests were performed first on the sandwich beam with glass/polypropylene faces and aluminum foam cores. The face thickness, core height, and angle-ply directions were considered as the variables to prepare the specimens. The effects of these variables on the bending strengths and the failure modes of the studied sandwich beams were experimentally analyzed using an MTS 810 material testing system and a four-point bending jig. Experimental results show that four failure modes, i.e. face-sheet failure, local indentation, and two types of core shear failure, were observed fo

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Ninane, Maxime, Caroline Pollet, Jacques Hébert, and Benoit Jourez. "Physical, mechanical, and decay resistance properties of heat-treated wood by Besson® process of three European hardwood species." BASE, no. 2 (2021): 129–39. http://dx.doi.org/10.25518/1780-4507.19050.

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Description of the subject. In Europe, the heat treatment of native wood species is gradually becoming an industrial reality. It provides a promising alternative to both the use of naturally durable, essentially tropical woods and the use of chemical preservative treatments based on biocides. Objectives. The aim of this study is to quantify the effect of heat treatment on the physico-mechanical and decay resistance properties of three native hardwood species (oak, ash, beech + steamed beech). Method. The wood was heat-treated in accordance with the Besson® process. The standard physical and me

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Chen, Zhi Tao, Hui Zhao, and Ying Zi Yang. "Bending Behavior of Ethylene Vinyl Acetate Modified Engineered Cementitious Composite under Drop Weight Impact Testing." Key Engineering Materials 853 (July 2020): 150–56. http://dx.doi.org/10.4028/www.scientific.net/kem.853.150.

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In this study, a drop weight testing method was employed to investigate the impact bending behavior of ethylene vinyl acetate (EVA) modified engineered cementitious composite (ECC). The ECC with no EVA was selected as control, and the static and impact bending behavior was compared with the EVA modified ECC. The results showed that the compressive strength of EVA modified ECC decreased by 20%~30% in comparison with control ECC with fly ash substitution ratio variation. The addition of EVA can improve the bending toughness of ECC dramatically under static loading condition. As different from th

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Dziurka, Dorota, Adam Derkowski, Marek Wieruszewski, Marcin Kuliński, and Radosław Mirski. "GL Beams Reinforced with Plywood in the Outer Layer." Materials 15, no. 11 (2022): 3976. http://dx.doi.org/10.3390/ma15113976.

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Glulam beams are increasingly used in the construction industry because of their high strength and the possibility of using round timber with smaller cross-sections. The load-bearing capacity of beams is strongly related to the quality of the outer layers and, in the case of wood, especially the tension zones. For these reasons, this study decided to replace the outer lamella with tensile plywood. The produced beams were subjected to static bending strength and modulus of elasticity evaluation. It was shown that the best static bending strength values were obtained for beams containing plywood

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Grokhovsky, V. I., S. V. Gladkovsky, K. A. Badekha, and V. E. Veselova. "Brittle fracture resistance of the Fe–17%Ni alloy of extraterrestrial origin (the chinga meteorite) under static and dynamic loading." Diagnostics, Resource and Mechanics of materials and structures, no. 6 (December 2023): 145–58. http://dx.doi.org/10.17804/2410-9908.2023.6.145-158.

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The values of conditional yield strength, impact strength, and the parameters of static and dynamic crack resistance of the Chinga meteorite substance (the Fe–17%Ni alloy) are determined by mechanical testing for uniaxial tension and static bending and instrumented impact testing of V-notched prismatic samples at temperatures ranging between 20 and −196 °С. It is shown that the dynamic nature of material loading according to the three-point bending scheme contributes to a noticeable decrease in impact strength (KCV) and crack propagation energy (KCT) during low-temperature tests (−196 °С) and

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Ma, Yuqin, Yatao Zhao, Yun Zhang, et al. "Influence of Infiltration Pressure on the Microstructure and Properties of 2D-CFRP Prepared by the Vacuum Infiltration Hot Pressing Molding Process." Polymers 11, no. 12 (2019): 2014. http://dx.doi.org/10.3390/polym11122014.

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The critical infiltration pressures of the matrix in a two-dimensional (2D) carbon fiber preform were calculated theoretically, and the calculated values of the static and dynamic models were 0.115 and 0.478 MPa, respectively. Compared with the dynamic model, there is no viscous resistance or infiltration front gas pressure in the static model, so the static value is obviously lower than the dynamic value. To verify the rationality of theoretical calculation, 2D carbon fiber reinforced plastics (2D-CFRP) with infiltration pressures of 0.5, 0.6, 0.7, 0.8, and 0.9 MPa were prepared by the vacuum

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Лесів, Лев, Сергій Гайда та Любов Салапак. "РОЗРОБЛЕННЯ МАТЕМАТИЧНОЇ МОДЕЛІ МІЦНОСТІ ЗРОЩЕНИХ ЗАГОТОВОК ІЗ ВЖИВАНОЇ ДЕРЕВИНИ ЯЛИЦІ". Forestry, Forest, Paper and Woodworking Industry 50 (12 липня 2024): 16–28. https://doi.org/10.36930/42245002.

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The expediency of using dimensionally suitable block elements of post-consumer wood for obtaining spliced blanks for the manufacture of wood products is substantiated. Spliced blanks from used fir wood were prepared by implementing the B-plan of the second order, where the variables were the width of dimensionally suitable bars and the length of the toothed spikes in the bars. The limit of strength during static bending for spliced blanks from post-consumer fir wood was determined experimentally and an adequate mathematical (regression) model was built depending on the width of dimensionally s

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Rahaman, Md, Khurshid Akhter, S. Hossain, and Md Islam. "Study on Particleboard made from Nipa palm (Nypa fruticans) stem wood and Rajkoroi (Albizia richardiana) wood." Journal of Non Timber Forest Products 25, no. 1 (2018): 15–18. http://dx.doi.org/10.54207/bsmps2000-2018-qpjp02.

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The study was conducted to find out the suitability of making particleboard using nipa palm (Nypa fruticans) stem wood and rajkoroi (Albizia richardiana) wood chips. Particleboards were fabricated at six different ratios of nipa palm stem and rajkoroi wood chips such as 100:0, 75:25, 50:50, 25:75, 10:90 and 0:100. Characteristics of particleboards such as modulus of rupture, internal bond strength, water absorption, thickness swelling and moisture content were measured. Results shows that particleboards made from 100% rajkoroi wood chips have the highest static bending properties and highest t

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Tomczak, Arkadiusz, and Tomasz Jelonek. "Radial variation in the wood properties of Scots pine (Pinus sylvestris L.) grown on former agricultural soil." Forest Research Papers 74 (2) (March 1, 2013): 171–77. https://doi.org/10.2478/frp-2013-0017.

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The soil of former farmland greatly differs from forest soil, and significantly influences tree growth and development compared with other site factors. The effect may also be reflected indirectly in radial variability of wood. This study compared radial variation of wood density, compressive strength along the grain and static bending strength of wood of Scots pine trees growing on former farmland and forest soils. The analyses were conducted in eight mature pine stands. On the basis of the stand description, four stands were classified as growing on forest soil (L) and four as growing on for

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Barcikowski, Michał, Grzegorz Lesiuk, Karol Czechowski, and Szymon Duda. "Static and Flexural Fatigue Behavior of GFRP Pultruded Rebars." Materials 14, no. 2 (2021): 297. http://dx.doi.org/10.3390/ma14020297.

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This paper presents the experimental results of composite rebars based on GFRP manufactured by a pultrusion system. The bending and radial compression strength of rods was determined. The elastic modulus of GFRP rebars is significantly lower than for steel rebars, while the static flexural properties are higher. The microstructure of the selected rebars was studied and discussed in light of the obtained results—failure processes such as the delamination and fibers fracture can be observed. The bending fatigue test was performed under a constant load amplitude sinusoidal waveform. All rebars we

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Barcikowski, Michał, Grzegorz Lesiuk, Karol Czechowski, and Szymon Duda. "Static and Flexural Fatigue Behavior of GFRP Pultruded Rebars." Materials 14, no. 2 (2021): 297. http://dx.doi.org/10.3390/ma14020297.

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This paper presents the experimental results of composite rebars based on GFRP manufactured by a pultrusion system. The bending and radial compression strength of rods was determined. The elastic modulus of GFRP rebars is significantly lower than for steel rebars, while the static flexural properties are higher. The microstructure of the selected rebars was studied and discussed in light of the obtained results—failure processes such as the delamination and fibers fracture can be observed. The bending fatigue test was performed under a constant load amplitude sinusoidal waveform. All rebars we

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Bednarek, Zoja, and Agnieszka Kaliszuk-Wietecka. "ANALYSIS OF THE FIRE‐PROTECTION IMPREGNATION INFLUENCE ON WOOD STRENGTH." JOURNAL OF CIVIL ENGINEERING AND MANAGEMENT 13, no. 2 (2007): 79–85. http://dx.doi.org/10.3846/13923730.2007.9636423.

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The paper presents the description, results and result analysis for the effect of fire‐protection impregnation with a salt‐containing agent, made by a vacuum‐and‐pressure method, on wood strength. A significant effect of this impregnation type was proven for the strength types as follows: static bending, tension, lengthwise compression (ie along fibres), crosswise compression (ie across fibres), as well as for dynamic bending and impact strength in normal and elevated temperatures.

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Chun, Jin Tan, and Mohd Salleh Salwani. "Bending Performance of Aluminum Sandwich Panel with Polyurethane Foam Core." Materials Science Forum 1056 (March 14, 2022): 11–16. http://dx.doi.org/10.4028/p-ck546n.

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Although rigid foam core structures have gotten a lot of attention, there have only been a few researches on foam reinforced sandwich panels with aluminum alloy A6061 sheets as face-sheets. In this research, the sandwich concept was applied to develop lightweight panels for roofing system. Analysis on the influences of core thickness, density, and foam layer arrangement on energy absorption, bending strength and displacement of sandwich panel under the quasi-static three-point bending test were investigated. Sandwich panel core is made of closed-cell polyurethane foam with densities of 40 kg/m

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HORVÁTH, DÉNES, SÁNDOR FEHÉR, and MÁTYÁS BÁDER. "THE POTENTIAL OF PRODUCING HIGH ADDED VALUE STRUCTURAL TIMBER FROM LAMELLAE WASTE. TEST RESULTS AND ANALYSIS." WOOD RESEARCH 68(1) 2023 68, no. 1 (2023): 44–57. http://dx.doi.org/10.37763/wr.1336-4561/68.1.4457.

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The research was based on the analysis of the density, bending strength and modulus of elasticity of 100 oak lamellae generated as small-sized production waste. In this part of thestudy series, the test results were presented in detail and analysed, in particularly the density distribution. Correlations between some test results have been shown. The dynamic and static test results were also compared. Despite the poor quality lamellae, the average density of the sample set corresponds to literary values and the distribution of density is normal. Specimens with low density are unsuitable for fur

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Xue, Bing, Ying Cheng Hu, Fang Chao Cheng, and Li Zhang. "Analysis on Microstructure and Mechanical Properties of Pine Laminated Veneer Lumber." Materials Science Forum 658 (July 2010): 479–82. http://dx.doi.org/10.4028/www.scientific.net/msf.658.479.

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In this paper, four different nondestructive testing (NDT) methods and the static bending test were conducted on the pine (Pinus sylvestris L. Var. mongolica Litven.) laminated veneer lumber (LVL). The NDT methods included the longitudinal transmission method, longitudinal vibration method, in-plane and out-plane flexural vibration method. The effects of the compression ratio on the Young’s modulus and bending strength (MOR) of LVL were investigated. There were four compression ratios for different ply numbers of LVL, 8.1% for eight-ply samples, 18.3% for nine-ply samples, 26.5% for ten-ply sa

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Mansoor, Noorsyazwani, Adlin Sabrina Muhammad Roseley, Sabiha Salim, and Roger Meder. "Assessment of Bending Strength of Eucalyptus Pellita Wood by Acoustic Velocity (AV) Technique." Environment-Behaviour Proceedings Journal 9, SI17 (2024): 539–44. http://dx.doi.org/10.21834/e-bpj.v9isi17.5974.

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This study was conducted to validate the bending strength of Eucalyptus pellita using the acoustic velocity method and the conventional method. Acoustic velocity was measured on slabs using Fakopp Microsecond Timer, which relies on the time-of-flight principle. Acoustic velocity was converted to the dynamic modulus of elasticity MOEdyn based on the equation MOEdyn = ρAV2. The conversion equations between MOEdyn and static MOE were established using the regression method. The bending test was conducted according to standard ISO 13061. Results show that the acoustic velocity method can be used t

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Liu, Hsuan-Chih, Yu-Hui Zeng, and Chun-Li Lin. "Mechanical Comparison of a Novel Hybrid and Commercial Dorsal Double Plating for Distal Radius Fracture: In Vitro Fatigue Four-Point Bending and Biomechanical Testing." Materials 14, no. 20 (2021): 6189. http://dx.doi.org/10.3390/ma14206189.

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This study compares the absolute and relative stabilities of a novel hybrid dorsal double plating (HDDP) to the often-used dorsal double plating (DDP) under distal radius fracture. The “Y” shape profile with 1.6 mm HDDP thickness was obtained by combining weighted topology optimization and finite element (FE) analysis and fabricated using Ti6Al4V alloy to perform the experimental tests. Static and fatigue four-point bending testing for HDDP and straight L-plate DDP was carried out to obtain the corresponding proof load, strength, and stiffness and the endurance limit (passed at 1 × 106 load cy

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Thay, Visal, Yuna Osada, Yuta Kanazawa, Shuichi Fujikura, Hitoshi Nakamura, and Hisakazu Horii. "Experimental study on bending fatigue strength of adhesively bonded joints." IOP Conference Series: Materials Science and Engineering 1289, no. 1 (2023): 012026. http://dx.doi.org/10.1088/1757-899x/1289/1/012026.

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Abstract This paper focuses on the establishment of repair or strengthening method of steel structures by externally bonded patch plates. The bending static tests and bending fatigue tests of adhesively bonded joints were conducted and the fatigue life is evaluated. The Konishi E258R is used as an adhesive, and the bending fatigue tests were conducted, varying the applied stress ranges and the stress ratio, the ratio of minimum and maximum stress of fatigue test. The result indicates that the fatigue life of adhesively bonded joints can be evaluated in the function of principal stress ratio, t

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Wang, Xinyuan, Zhuokun Cao, and Gaofeng Fu. "Quasi-Static Three-Point Bending Behavior of Aluminum Foam Sandwich with CFRP Face-Sheets." Metals 12, no. 8 (2022): 1393. http://dx.doi.org/10.3390/met12081393.

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Aluminum foam sandwich panels are excellent structure–function integrated materials. With high specific strength, cushioning energy absorption and sound absorption of aluminum foam material, they overcome the disadvantage of the low strength of single aluminum foam materials. In this paper, the response of aluminum sandwich panels comprising aluminum foam cores and carbon fiber reinforced plastic (CFRP) face-sheets was investigated under quasi-static three-point bending, and the effect of core thickness as well as core density on flexural loads and deformation modes was studied. The experiment

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Xue, Bing, Ying Cheng Hu, and Fang Chao Cheng. "Effect of Relative Humidity on Mechanical Properties of Birch Laminated Veneer Lumber." Advanced Materials Research 129-131 (August 2010): 576–79. http://dx.doi.org/10.4028/www.scientific.net/amr.129-131.576.

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Laminated Veneer Lumber (LVL) panels made from birch (Betula platyphylla Suk.) veneers were tested for physical and mechanical strength properties in this study. The static bending test were conducted on the LVL, and bending test and shear test were conducted on veneer and three-lamination LVL. The effects of the relative humidity on the modulus of elasticity (MOE) and bending strength (MOR) of birch LVL with vertical load and parallel load were investigated. There were four relative humidities including 40%, 50%, 60% and 70%. The results showed that the MOE and MOR of LVL would diminished wit

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Jeong, Kyucheol, Jaewook Lee, and Jonghun Yoon. "Experimental Investigation of Delayed Fracture Initiation in Advanced High-Strength Steel Under Accelerated Bending." Materials 18, no. 14 (2025): 3415. https://doi.org/10.3390/ma18143415.

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Predicting bending fractures in advanced high-strength steel (AHSS) is challenging due to complex microstructural behaviors and strain rate dependencies, particularly in industrial forming processes. Current models and standards primarily focus on quasi-static tension or slow bending speeds, leaving a gap in understanding the accelerated failure of AHSS without necking. In this study, direct bending experiments were conducted on dual-phase, complex-phase, and martensitic AHSS grades under varying bending speeds and radii. Since the bending crack is irrelevant to the load drop, surface crack ev

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Dong, Zheng Yan, and Han Long Zhang. "Bolt Static Finite Element Numerical Simulation and Experimental Research." Applied Mechanics and Materials 494-495 (February 2014): 373–76. http://dx.doi.org/10.4028/www.scientific.net/amm.494-495.373.

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This study investigated the wind turbine blade root bolt static strength using the full scale static test, selected the root bolts of 1/4 bridge strain gauge using the finite element analysis method and the dynamic and static strain instrument. The data of the stress loading combined tension and bending bolt were obtained.

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Yang, Dong Ping, Yong Bo Shao, Feng Le Long, Geng Qi Niu, Lu Zhang, and Jing Bo Zhi. "Static Strength of RHS T-Joints with Reinforced Chord under In-Plane Bending Load." Applied Mechanics and Materials 488-489 (January 2014): 790–94. http://dx.doi.org/10.4028/www.scientific.net/amm.488-489.790.

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Welded tubular structures are widely used in many constructions, such as offshore platforms, which are all consisted of welded tubular members. There is a stress concentration at the intersection between chord and brace. When subjected to loads, a crack exists in the weld toe at the intersection. Then the propagation of the crack leads to failure of the joint. So the static strength of rectangular hollow section (RHS) T-joints with local chord reinforcement under in-plane bending load is investigated by using finite element method. To study the effect of the chord reinforcement of a RHS T-join

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Fuentes-Talavera, F. J., J. A. Silva-Guzmán, R. Rodríguez-Anda, M. G. Lomelí-Ramírez, R. Sanjuán-Dueñas, and H. G. Richter. "Strength properties and natural durability of Avocado (Persea americana Mill.) branch wood." Madera y Bosques 17, no. 1 (2016): 37–47. http://dx.doi.org/10.21829/myb.2011.1711153.

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This paper reports on mechanical properties and natural durability of avocado branch wood (Persea americana Mill.) with the objectives of providing a reliable property profile and to promote the rational use of this abundant yet largely neglected natural resource. The mechanical properties (static bending, compression, shear, impact bending) and hardness were determined in accordance with European standards (CEN). Natural durability was assessed according to the European standard EN 350-1 (agar block test) using the white rot fungi Trametes versicolor and Phanerochaete chrysosporium, and the b

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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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Borůvka, Vlastimil, David Novák, and Přemysl Šedivka. "Comparison and Analysis of Radial and Tangential Bending of Softwood and Hardwood at Static and Dynamic Loading." Forests 11, no. 8 (2020): 896. http://dx.doi.org/10.3390/f11080896.

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This paper should primarily lead to a targeted expansion of the database dealing with bending characteristics, and thus help to understand the static and dynamic bending strength depending on the direction of external forces. Wood is very often used in the structural elements of buildings and wood products (e.g., furniture), in which there is both a static load, and in many cases a dynamic load, whilst the direction of loading is usually not considered. Specifically, the paper focuses on determining the bending strength and impact strength of seven economically-important wood species in the Cz

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Kobayashi, Hidetoshi, Keitaro Horikawa, Kinya Ogawa, and Keiko Watanabe. "Impact compressive and bending behaviour of rocks accompanied by electromagnetic phenomena." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, no. 2023 (2014): 20130292. http://dx.doi.org/10.1098/rsta.2013.0292.

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It is well known that electromagnetic phenomena are often observed preceding earthquakes. However, the mechanism by which these electromagnetic waves are generated during the fracture and deformation of rocks has not been fully identified. Therefore, in order to examine the relationship between the electromagnetic phenomena and the mechanical properties of rocks, uniaxial compression and three-point bending tests for two kinds of rocks with different quartz content, granite and gabbro, have been carried out at quasi-static and dynamic rates. Especially, in the bending tests, pre-cracked specim

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LUKINA, A. V., M. S. LISYATNIKOV, V. M. MARTINOV, and S. I. ROSCHINA. "STRENGTH AND DEFORMABILITY OF RAW WOOD AFTER FIRE EXPOSURE." Building and reconstruction 104, no. 6 (2022): 40–49. http://dx.doi.org/10.33979/2073-7416-2022-104-6-40-49.

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The study of wood with reduced physical and mechanical characteristics, including wood exposed to fire, is an important step towards economical and rational environmental management. Fires cause changes in the physical and mechanical properties of wood: moisture content, density and strength. Conducted tests for static bending, compression and tension along the fibers. Decrease in density and strength in fire-prone wood occurs along the entire height of the trunk. The following pattern is observed: in the butt part, the density is higher than in the middle part. The decrease in strength in the

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Soldatov, V. P., and N. M. Chaikovskaya. "Microplastic deformation under cyclic bending of yttrium-based HTS ceramic plates." Low Temperature Physics 19, no. 11 (1993): 896–99. https://doi.org/10.1063/10.0033540.

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Deformation effects in polycrystalline plates of yttrium-based HTS ceramic of density 5 g/cm3 are studied under cyclic bending conditions. Elastic (static Young’s modulus) and strength (ultimate bending strength) characteristics of plates of various thicknesses from 0.3 to 3.5 mm are determined in the direction of the bending force. It is found that these parameters are independent of plate thickness. A transition from a smooth monotonic or irregular nature of stress-strain curves is observed upon a transition from step-by-step to cyclic loading conditions. Possible mechanisms of structural de

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