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Relevant bibliographies by topics / Flexural modulus (stiffness)

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Journal articles
Dissertations / Theses
Conference papers

Academic literature on the topic 'Flexural modulus (stiffness)'

Author: Grafiati

Published: 4 June 2021

Last updated: 15 February 2022

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Journal articles on the topic "Flexural modulus (stiffness)"

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Soares, CarlosJ, VeridianaR Novais, PauloS Quagliatto, AlvaroDella Bona, and Lourenço Correr-Sobrinho. "Flexural modulus, flexural strength, and stiffness of fiber-reinforced posts." Indian Journal of Dental Research 20, no. 3 (2009): 277. http://dx.doi.org/10.4103/0970-9290.57357.

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Chiaraputt, S., S. Mai, B. P. Huffman, et al. "Changes in Resin-infiltrated Dentin Stiffness after Water Storage." Journal of Dental Research 87, no. 7 (2008): 655–60. http://dx.doi.org/10.1177/154405910808700704.

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Plasticization of polymers by water sorption lowers their mechanical properties in a manner that is predictable by the polarity of their component resins. This study tested the hypothesis that when adhesive resins were used to create resin-infiltrated dentin, the reductions in their flexural moduli after water storage would be lowered proportional to their hydrophilic characteristics. Three increasingly hydrophilic resin blends were used to fabricate polymer beams and macro-hybrid layer models of resin-infiltrated dentin for testing with a miniature three-point flexure device, before and after

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Marchenko, Aleksey, Eugene Morozov, and Sergey Muzylev. "Measurements of sea-ice flexural stiffness by pressure characteristics of flexural-gravity waves." Annals of Glaciology 54, no. 64 (2013): 51–60. http://dx.doi.org/10.3189/2013aog64a075.

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Abstract A method to estimate the flexural stiffness and effective elastic modulus of floating ice is described and analysed. The method is based on the analysis of water pressure records at two or three locations below the bottom of floating ice when flexural-gravity waves propagate through the ice. The relative errors in the calculations of the ice flexural stiffness and the water depth are analysed. The method is tested using data from field measurements in Tempelfjorden, Svalbard, where flexural-gravity waves were excited by an icefall at the front of the outflow glacier Tunabreen in Febru

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Kazemi, M., and G. Verchery. "A Methodology for Optimal Design of Composite Laminates Using Polar Formalism." Journal of Mechanics 32, no. 3 (2016): 255–66. http://dx.doi.org/10.1017/jmech.2015.98.

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AbstractAn innovative optimization technique is presented for the design of composite laminated plates subjected to in-plane loads. A list of quasi-homogeneous laminates that can be used as angle-ply materials is proposed as a comprehensive solution for optimum lay-up. Two optimization procedures are performed: Dimensioning of the flexural stiffness and the elastic modulus, which provides the optimal orientations for the layers and offer highest in-plane resistance to composite laminated structures. The polar formalism for plane anisotropy is used to represent the flexural stiffness and elasti

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Virgin, Lawrence. "On the flexural stiffness of 3D printer thermoplastic." International Journal of Mechanical Engineering Education 45, no. 1 (2016): 59–75. http://dx.doi.org/10.1177/0306419016674140.

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This paper describes the process of estimating Young’s modulus for the thermoplastic material commonly used in a type of 3D printer. Its twin goals are to compare and contrast a number of simple techniques from elementary structural analysis and to assess the influence of the printer density settings and print orientation (effective material anisotropy). Since components printed using additive manufacturing are used extensively for student projects, often involving load-bearing components, this contribution seeks to shed some light on fundamental modeling issues

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Agrawal, Ashutosh, and Tanmay P. Lele. "Geometry of the nuclear envelope determines its flexural stiffness." Molecular Biology of the Cell 31, no. 16 (2020): 1815–21. http://dx.doi.org/10.1091/mbc.e20-02-0163.

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We performed computational analysis of the bending of the nuclear envelope under applied force using a model that accounts for envelope geometry. Our calculations show that the effective bending modulus of the nuclear envelope is an order of magnitude larger than a single membrane and approximately five times greater than the nuclear lamina.

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Molnar, T., V. Baranyai, S. Kemény, Gy Bánhegyi, and József Szabó. "Adjusting the Flexibility of Fabric Reinforced Composite Laminates Using Experimental Design." Materials Science Forum 812 (February 2015): 181–87. http://dx.doi.org/10.4028/www.scientific.net/msf.812.181.

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The objective of our work is to improve the mechanical stiffness of fiber reinforced laminates. The stiffness can be characterized by flexural and tensile moduli or their derivation. We applied design of experiments (DOE) to achieve our goals, because to solve the existing analytical and numerical models is complicated.We examined the effects of the following parameters: a) composition of reinforce materials (solely carbon, or carbon and glass combination), b) modulus of resin, c) mass ratio of resin-reinforcement, d) order of layers.The samples manufactured on the basis of DOE were investigat

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Clinch, Robert W. "Structural characteristics of wood composite I-beams." Canadian Journal of Civil Engineering 20, no. 4 (1993): 574–81. http://dx.doi.org/10.1139/l93-074.

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In this study, wood composite I-beams consisting of F11 slash pine flanges and either hardboard or particleboard webs were fabricated and evaluated for flexural stiffness. Prior to fabrication, both the web and flange materials were evaluated for flexural stiffness. The mean modulus of elasticity of the flange material was 16 900 MPa, while that for the particleboard and hardboard was 4250 and 4450 MPa respectively. The mean effective modulus of elasticity for the particleboard-webbed beams was 16 300 MPa and for the hardboard-webbed beams was 16 400 MPa. The implications of the findings are d

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Bonser, R., and P. Purslow. "The Young's modulus of feather keratin." Journal of Experimental Biology 198, no. 4 (1995): 1029–33. http://dx.doi.org/10.1242/jeb.198.4.1029.

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The flexural stiffness of the rachis varies along the length of a primary feather, between primaries and between species; the possible contribution of variations in the longitudinal Young's modulus of feather keratin to this was assessed. Tensile tests on compact keratin from eight species of birds belonging to different orders showed similar moduli (mean E=2.50 GPa) in all species apart from the grey heron (E=1.78 GPa). No significant differences were seen in the modulus of keratin from primaries 7&shy;10 in any species. There was a systematic increase in the modulus distally along the le

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Xiao, Tong Liang, and Hong Xing Qiu. "Theoretical Analysis on Flexural Behavior of Concrete Members Reinforced by Steel-Basalt FRP Composite Bars." Applied Mechanics and Materials 578-579 (July 2014): 236–39. http://dx.doi.org/10.4028/www.scientific.net/amm.578-579.236.

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Steel-Basalt FRP Composite Bar (S-BFCB) is a new kind of substitute material for longitudinal reinforcement, with high elastic modulus, stable post-yield stiffness and excellent corrosive resistance. It is made up of steel wrapped by basalt FRP in longitudinal direction. Based on mechanical properties of S-BFCB and the plane cross-section assumption, the moment-curvature relationship and stiffness on flexural members at different stages have been analyzed and verified by experiment. Flexural member reinforced by S-BFCB can make full use of the strength of FRP. By the principle of equivalent ba

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Dissertations / Theses on the topic "Flexural modulus (stiffness)"

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Guettler, Barbara Elisabeth. "Effect of Thermal and Chemical Treatment of Soy Flour on Soy-Polypropylene Composite Properties." Thesis, 2012. http://hdl.handle.net/10012/6702.

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Soy flour (SF), a by-product of the soybean oil extraction processing, was investigated for its application in soy-polypropylene composites for interior automotive applications. The emphasis of this work was the understanding of this new type of filler material and the contribution of its major constituents to its thermal stability and impact properties. For this reason, reference materials were selected to represent the protein (soy protein isolate (SPI)) and carbohydrate (soy hulls (SH)) constituents of the soy flour. Additional materials were also investigated: the residue obtained after th

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Conference papers on the topic "Flexural modulus (stiffness)"

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Şener, Özgün, Oğuzhan Dede, Oğuz Atalay, Mert Atasoy, and Altan Kayran. "Evaluation of Transverse Shear Moduli of Composite Sandwich Beams Through Three-Point Bending Tests." In ASME 2018 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/imece2018-87636.

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Transverse shear moduli of the sandwich core and flexural stiffness of all-composite sandwich constructions are determined with three-point beam bending tests, and compared with the analytical and finite element analysis solutions. Additionally, Digital Image Correlation (DIC) system is employed to validate the experimental results by monitoring the displacements. The effect of orientation of the composite core material with respect to the beam axis on the shear modulus of the core material itself, flexural stiffness of the sandwich beam, maximum loading, and the maximum stresses on the sandwi

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Jazar, Reza N., Monir Takla, and M. Mahinfalah. "Improved Mathematical Modeling of Thermal Effects in Flexural Microcantilever Resonators Dynamics." In ASME 2010 International Mechanical Engineering Congress and Exposition. ASMEDC, 2010. http://dx.doi.org/10.1115/imece2010-37610.

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In a recent research the thermal dependency of material characteristics in dynamic response of microresonator systems is modeled using Lorentzian function and employing perturbation analysis. Thermal phenomena introduce two main effects: damping due to internal friction, and softening due to Young modulus-temperature relationship. The presented mathematical model provided effective equations to study the electrically actuated microbeam resonators. The mathematical model of thermal phenomena in microbeam vibration was introduced by Jazar (2009). In that analysis, using the Zener model, a positi

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Suryawanshi, Vinod B., Evan T. Kimbro, and Ajit D. Kelkar. "Life Prediction and Stiffness Degradation Modeling of Glass/Epoxy Composites Subjected to Flexural Fatigue Loading." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-67664.

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Textile composite are extensively used as structural materials for automotive, aerospace, energy, transportation and construction applications. During their service life these structures are subjected to different types of static and cyclic loading. For structural health monitoring of these structures, it is important to know the fatigue life and damage occurred at any stage of the life of the structure. Fatigue life is generally estimated using suitable life prediction model, while fatigue damage can be predicted by monitoring measurable damage parameters such as stiffness and strength. Two m

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Nanda, Aditya, and M. Amin Karami. "Flexural Frequency Bandgaps in a Foldable Metamaterial Structure." In ASME 2017 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/smasis2017-3892.

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This manuscript investigates the flexural wave propagation behavior of a foldable metamaterial structure. Origami-inspired foldable structures are making inroads into many engineering applications — deployable solar cell arrays, foldable telescope lenses, foldable automotive airbags, to name a few; driven primarily by some of the remarkable mechanical properties (high stiffness, negative Poisson’s ratio, bistability etc.) of these structures. The chief motivation of this research is a comprehensive analysis of flexural wave propagation in such foldable structures. The repeating unit cell of th

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Aussawasathien, Darunee, and Erol Sancaktar. "Mechanical Properties of Electrospun Carbon Nano Fiber (ECNF)/Epoxy Nanocomposites." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-34403.

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Electrospun polyacrylonitrile (PAN) fiber precursor based Carbon Nanofiber (CNF) mats were produced and impregnated with epoxy resin. The mechanical properties of as-prepared nanofibers in the mat and short fiber filled epoxy nanocomposite forms were determined to demonstrate the effect of fiber aspect ratio and interconnecting network on those properties. Our experimental results reveal that epoxy nanocomposites containing Electrospun Carbon Nano Fibers (ECNF) with high fiber aspect ratio and high interconnecting network in the non-woven mat form yield better mechanical properties than those

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Hamada, Hiroyuki, Asami Nakai, Kazuya Eto, and Kenichi Sugimoto. "Mechanical Properties of Matrix Hybrid Thick-Composites." In ASME 2004 International Mechanical Engineering Congress and Exposition. ASMEDC, 2004. http://dx.doi.org/10.1115/imece2004-62305.

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For the purpose of more safety boats, the large thickness of outer plates is required to increase flexural stiffness, strength and impact properties. Some problems in mechanical properties are generated by increasing in thickness because the effect of interlaminar shearing of Thick-composites on whole mechanical properties is greater than that of thin-composites. We have investigated the matrix hybrid composite with two kinds of unsaturated polyester, one was hard type resin with low toughness and the other was flexible type resin with low modulus and high toughness. In this study, matrix hybr

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Garr, Dale G., and Frederick H. Ashcroft. "Swage panel Analyses: Effective Orthotropic and Laminated Plate Properties." In SNAME 5th World Maritime Technology Conference. SNAME, 2015. http://dx.doi.org/10.5957/wmtc-2015-221.

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Analytical expressions for the effective elastic properties of orthotropic, and laminated plates are presented for represented for representing swage panel subjected to extension and bending. A methodology is described for analyzing the swaged panels as effective, orthotropic flat plates. The equivalent rigidities of the laminated plating are established by matching the in-plane and flexural stiffness of the swage panel with those of the laminated plate. The required properties of the effective plating include the dependent Young’s modulii, shear modulus and Poisson’s ratios for each layer of

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Beck, Benjamin, Kenneth A. Cunefare, and Manuel Collet. "Power Output and Dissipation of a Negative Capacitance Shunt Coupled to Piezoelectric Transducers." In ASME 2011 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. ASMEDC, 2011. http://dx.doi.org/10.1115/smasis2011-5099.

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A negative capacitance shunt is a basic, analog, active circuit electrically connected to a piezoelectric transducer to control vibrations of flexural bodies. The electrical impedance of the negative capacitance shunt modifies the effective modulus of the piezoelectric element to reduce the stiffness and increase the damping which causes a decrease in amplitude of the vibrating structure to which the elements are bonded. The negative capacitance circuit is built around a single operational amplifier using passive circuit elements. To gain insight into the electromechanical coupling, the power

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Aktas, Levent, and M. Cengiz Altan. "Cure Kinetics of Nanocomposites Prepared From Aqueous Dispersion of Nanoclay." In ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17080.

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The effect of nanoclay on the cure kinetics of glass/waterborne epoxy nanocomposites is investigated. First step in sample preparation involves dispersing Cloisite® Na+, a natural montmorillonite, in distilled water at 70°C with the aid of a sonicator. Then, desired amounts of dicyandiamide and 2-methyl imidazole, serving as cross-linkers, are mixed to the aqueous nanoclay solution. As the mixing continues, Epi-Rez 3522-W-60 waterborne epoxy resin is introduced to the solution and the compound is mixed for an additional 30 minutes. The nanoclay content of this batch is adjusted to be at 2wt%.

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Alam, Shah, and Guoqiang Li. "A Study of Hybrid Composite Sandwich Beam." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11845.

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Abstract This study presents the testing and numerical modeling results of composite sandwich beams. The sandwich beams are constructed from balsa wood in the core and high strength steel wire and E-glass fiber reinforced polymer composite in the facings. The testing of these beams is performed using a monotonic static four-point loading to failure in accordance with ASTM C393-00. Local strain distribution in the mid-span of the beams is obtained using strain gauges. Mid-span deflections of the beams are real-time measured using linear variable displacement transducer (LVDT). From the experime

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