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Littérature scientifique sur le sujet « Elastic lifetime »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Elastic lifetime"

Zhao, Rongguo, Duheng Ye, Sheng Lin, et al. "Optimization Design and Fatigue Lifetime Analysis for Elastic Wheel of Low-floor Trams Using in Urban Rail Transit." Journal of Physics: Conference Series 2468, no. 1 (2023): 012051. http://dx.doi.org/10.1088/1742-6596/2468/1/012051.

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Abstract Elastic wheel is an important component of the low floor tram using in urban rail transit, so it is of significance to optimize its structure and predict its service lifetime. Firstly, the fatigue characteristics of rubber material are studied based on the crack energy theory, and a finite element model of an elastic wheel for fatigue lifetime prediction is constructed. The numerical simulation results show that the fatigue lifetime of such a elastic wheel does not match with the expected one. Secondly, based on the orthogonal numerical test and the Sobol model, an improved sensitivit

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Parker, A. P., S. N. Endersby, T. J. Bond, J. H. Underwood, S. L. Lee, and J. Higgins. "Stress Concentration, Stress Intensity, and Fatigue Lifetime Calculations in Autofrettaged Tubes Containing Axial Perforations Within the Wall." Journal of Pressure Vessel Technology 119, no. 4 (1997): 488–93. http://dx.doi.org/10.1115/1.2842334.

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Elastic, elastic-plastic and experimental stress analyses, and fatigue lifetime predictions are presented for thick cylinders containing multiple, axial holes within the wall. The holes are generally semi-elliptical (including semi-circular), and the cylinders are autofrettaged after introduction of the holes and are subsequently subjected to cyclic pressurization of the bore. Two potentially critical failure locations are identified; a fracture-mechanics based design methodology is proposed; elastic and elastic-plastic finite element (FE) analyses are undertaken. The elastic FE analysis predi

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Pazdera, Lubos, Libor Topolar, Jaroslav Smutny, and Kristyna Timcakova. "Nondestructive Testing of Advanced Concrete Structure during Lifetime." Advances in Materials Science and Engineering 2015 (2015): 1–5. http://dx.doi.org/10.1155/2015/286469.

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The paper reports on measurements and analysis of the measurements during hardening and drying of specimens using selected acoustic nondestructive testing techniques. An integrated approach was created for better understanding of the relations between the lifetime cycle and the development of the mechanical properties of concrete. Acoustic emission, impact echo, and ultrasonic techniques were applied simultaneously to the same mixtures. These techniques and results are presented on alkali-activated slag mortars. The acoustic emission method detects transient elastic waves within the material,

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Kondrashov, Oleg V., Timur R. Galimzyanov, Rodion J. Molotkovsky, Oleg V. Batishchev, and Sergey A. Akimov. "Membrane-Mediated Lateral Interactions Regulate the Lifetime of Gramicidin Channels." Membranes 10, no. 12 (2020): 368. http://dx.doi.org/10.3390/membranes10120368.

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The lipid matrix of cellular membranes is an elastic liquid crystalline medium. Its deformations regulate the functionality and interactions of membrane proteins,f membrane-bound peptides, lipid and protein-lipid domains. Gramicidin A (gA) is a peptide, which incorporates into membrane leaflets as a monomer and may form a transmembrane dimer. In both configurations, gA deforms the membrane. The transmembrane dimer of gA is a cation-selective ion channel. Its electrical response strongly depends on the elastic properties of the membrane. The gA monomer and dimer deform the membrane differently;

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Kansy, J., T. Suzuki, T. Ogawa, and M. Murakami. "Study of poly(methylphenylsilylenemethylene) by elastic thermalization lifetime analysis." Radiation Physics and Chemistry 58, no. 5-6 (2000): 545–50. http://dx.doi.org/10.1016/s0969-806x(00)00215-2.

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P, Contreras. "A Tale of the Scattering Lifetime and the Mean Free Path." Physical Science & Biophysics Journal 6, no. 2 (2022): 1–12. http://dx.doi.org/10.23880/psbj-16000225.

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The idea of applying the scattering lifetime calculated from the imaginary part of the zero temperature elastic scattering cross-section to study a hidden self-consistent damping in two spaces of importance for non-equilibrium statistical mechanics is proposed. It is discussed its relation with the classical phase space from statistical mechanics and the configuration space from nonrelativistic quantum mechanics. This idea is contrasted with the mean free path values in three elastic collision regimes. The main exercise is to study the behavior of a self-consistent probabilistic distribution f

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Song, Ming Xin, Rui Wu, Qian Liu, et al. "Reliability Research of Capacitive RF-MEMS Switch." Advanced Materials Research 753-755 (August 2013): 2507–10. http://dx.doi.org/10.4028/www.scientific.net/amr.753-755.2507.

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This paper presents the model of capacitive RF-MEMS switch for the lifetime prediction. The model is based on dielectric charging failure mechanism. The simulation results show that lifetime can reach 1000 hours when elastic coefficient (K) adopts 4-16N/m, Si3N4 as dielectric material, 0.4-1μm of dielectric thickness, 2-5μm of plate distance, less than 20V of driven voltage.

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Guo, Shiwen, and Jie Yan. "Structural-Elastic Determination of the Lifetime of Biomolecules Under Force." Biophysical Journal 114, no. 3 (2018): 577a. http://dx.doi.org/10.1016/j.bpj.2017.11.3155.

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Parker, A. P., J. H. Underwood, and D. P. Kendall. "Bauschinger Effect Design Procedures for Autofrettaged Tubes Including Material Removal and Sachs’ Method." Journal of Pressure Vessel Technology 121, no. 4 (1999): 430–37. http://dx.doi.org/10.1115/1.2883726.

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Autofrettage is used to introduce advantageous residual stresses into pressure vessels and to enhance their fatigue lifetimes. The Bauschinger effect serves to reduce the yield strength in compression as a result of prior tensile plastic overload and can produce lower compressive residual hoop stresses near the bore than are predicted by “ideal” autofrettage solutions (elastic/perfectly plastic without Bauschinger effect). A complete analysis procedure is presented which encompasses representation of elastic-plastic uniaxial loading material behavior and of reverse-loading material behavior as

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Shlyannikov, Valery, Ivan Ishtyryakov, and Rustam Yarullin. "Life-time prediction for aviation GTE compressor disk based on mixed-mode and multi-axial fracture resistance parameters." MATEC Web of Conferences 300 (2019): 11001. http://dx.doi.org/10.1051/matecconf/201930011001.

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This study is concerned with analysis of fatigue crack growth and life-time prediction for aviation GTE compressor disk under operation conditions. For consideration were different combinations of rotational speed, temperature, surface flaw form and sizes as well as elastic-plastic titanium alloy BT3-1 properties are employed. A crack growth rate equation is derived involving the fracture process zone size and nonlinear stress intensity factor. The assessments of the structural integrity of the rotating disk are compared for elastic and elastic-plastic solutions. It is stated that the traditio

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Thèses sur le sujet "Elastic lifetime"

Swinteck, Nichlas Z. "Phase-Space Properties of Two-Dimensional Elastic Phononic Crystals and Anharmonic Effects in Nano-Phononic Crystals." Diss., The University of Arizona, 2012. http://hdl.handle.net/10150/228156.

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This dissertation contains research directed at investigating the behavior and properties of a class of composite materials known as phononic crystals. Two categories of phononic crystals are explicitly investigated: (I) elastic phononic crystals and (II) nano-scale phononic crystals. For elastic phononic crystals, attention is directed at two-dimensional structures. Two specific structures are evaluated (1) a two-dimensional configuration consisting of a square array of cylindrical Polyvinylchloride inclusions in air and (2) a two-dimensional configuration consisting of a square array of stee

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Li, Xiang [Verfasser], Heinz [Akademischer Betreuer] Konietzky, Heinz [Gutachter] Konietzky, Wulf [Gutachter] Schubert, and Guijun [Gutachter] Wang. "Lifetime prediction for rocks : a numerical concept based on linear elastic fracture mechanics, subcritical crack growth, and elasto-plastic stress redistributions / Xiang Li ; Gutachter: Heinz Konietzky, Wulf Schubert, Guijun Wang ; Betreuer: Heinz Konietzky." Freiberg : Technische Universitaet Bergakademie Freiberg Universitaetsbibliothek "Georgius Agricola", 2013. http://d-nb.info/1220698814/34.

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ACHILLI, SIMONA. "Spectral properties of adsorbates on metal surfaces via the embedding method." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2010. http://hdl.handle.net/10281/10827.

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Adsorbates on metal surfaces have attracted recently the scientific interest both from a fundamental point of view (quantum confinement) and in perspective of application in technology. In particular the electronic properties of such reduced symmetry systems are strictly related to their low dimensionality. An accurate theoretical description of their spectral properties has necessarily to deal with the absence of periodicity that characterizes these systems in one (thin films) or more (adatoms) directions. The embedding method allows to overcome this drawback considering a really infinite sys

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Poduška, Jan. "Vliv reziduálních napětí na odhad životnosti polymerních trubek." Doctoral thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2019. http://www.nusl.cz/ntk/nusl-399209.

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The lifetime of plastic pipes for water supply and other applications is demanded to exceed at least 50 years. Such a long lifetime is difficult to prove by standard testing methods like the hydrostatic pres-sure test. However, it is possible to calculate an estimation of the lifetime, as the most frequently oc-curring mechanism of failure of plastic pipes is the creep crack propagation and subsequent failure. The method is based on describing the crack propagation by parameters of the linear-elastic fracture mechanics. An important part of this method is a finite element simulation of crack p

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Chapitres de livres sur le sujet "Elastic lifetime"

Rie, K. T., and R. M. Schmidt. "Lifetime Prediction Under Creep-Fatigue Conditions." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials. Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3459-7_32.

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Kullig, E., H. Riesch-Oppermann, T. Winkler, and A. Brückner-Foit. "Lifetime prediction for thermal fatigue: development of a stochastic model." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2860-5_131.

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Aktaa, Jarir, and Bernd Schinke. "A Model for Damage and Lifetime Prediction Taking into Account the Backstress." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials—3. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2860-5_113.

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"Toughness." In Damage Mechanisms and Life Assessment of High-Temperature Components. ASM International, 1989. http://dx.doi.org/10.31399/asm.tb.dmlahtc.t60490021.

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Abstract The toughness of a material is its ability to absorb energy in the form of plastic deformation without fracturing. It is thus a measure of both strength and ductility. This chapter describes the fracture and toughness characteristics of metals and their effect on component lifetime and failure. It begins with a review of the ductile-to-brittle transition behavior of steel and the different ways to measure transition temperature. It then explains how to predict fracture loads using linear-elastic fracture mechanics and how toughness is affected by temperature and strain rate as well as

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"Fatigue Life Relations." In Fatigue and Durability of Structural Materials. ASM International, 2006. http://dx.doi.org/10.31399/asm.tb.fdsm.t69870045.

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Abstract This chapter familiarizes readers with the methods used to quantify the effects of fatigue on component lifetime and failure. It discusses the development and use of S-N (stress amplitude vs. cycles to failure) curves, the emergence of strain-based approaches to fatigue analysis, and important refinements and modifications. It demonstrates the use of approximate equations, including the method of universal slopes and the four-point correlation technique, which provides reasonable estimates of elastic and plastic lines from information obtained in standard tensile tests. It also discus

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Lee, Dai Gil, and Nam Pyo Suh. "Failure Criteria for Composite Materials." In Axiomatic Design and Fabrication of Composite Structures. Oxford University PressNew York, NY, 2005. http://dx.doi.org/10.1093/oso/9780195178777.003.0005.

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Abstract 5.1 Introduction Products should be designed and manufactured to function as intended, safely and reliably, for the prescribed design lifetime and, at the same time, to compete successfully in the marketplace. Any change in the size, shape, or material properties of a machine or machine part that renders it incapable of performing its intended functional requirements must be regarded as a mechanical failure. Failure of a machine or machine part to function properly might be brought about by any one, or a combination, of many different responses to loads and environments while in servi

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Ponnusami Sathiskumar A., Turteltaub Sergio, Zhang Xun, and Xiao Ping. "Modelling crack propagation in particle-dispersed self healing thermal barrier coatings." In Self Healing Materials. IOS Press, 2015. https://doi.org/10.3233/978-1-61499-514-2-229.

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A computational study to identify the critical material properties and optimal spatial distribution of capsules containing a reactive healing agent for a brittle (ceramic) matrix is presented. The study focusses on the so called self-healing thermal barrier coating (TBC) system in which suitable healing particles are dispersed in the coating layer with the goal of improving the lifetime of the TBC systems. For successful triggering of the healing process, a primary requirement is that the initiated micro cracks in the TBC matrix should get attracted to the healing particles and, in addition, t

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Hug, J., and H. Zenner. "Influence of multi-axial loading on the lifetime in LCF strength." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials. Elsevier, 1998. http://dx.doi.org/10.1016/b978-008043326-4/50040-4.

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Kotte, K. L., and H. Zenner. "Lifetime prediction-comparison between calculation and experiment on a large data base." In Low Cycle Fatigue and Elasto-Plastic Behaviour of Materials. Elsevier, 1998. http://dx.doi.org/10.1016/b978-008043326-4/50120-3.

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Dove, Martin T. "Anharmonic interactions." In Structure and Dynamics: An Atomic View of Materials. Oxford University PressOxford, 2003. http://dx.doi.org/10.1093/oso/9780198506775.003.0011.

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Abstract The basic harmonic model theory of lattice dynamics developed in Chapters 8 and 9 has proven to be extremely powerful. It has enabled an understanding of a wide range of basic phenomena, such as the propogation of sound waves, thermodynamic properties, and interaction of radiation such as light, X-rays, and neutron beams with crystalline matter (Chapter 10). It has provided the link between the microscopic interatomic interactions introduced in Chapter 5, as represented by the force constants, and these phenomena. The harmonic model is also very useful as a predictive tool, for exampl

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Actes de conférences sur le sujet "Elastic lifetime"

Sapalidis, S. N., P. J. Hogg, D. H. Kelley, and S. J. Youd. "Stress Corrosion of Fiberglass-Reinforced (FRP) Composites." In CORROSION 1997. NACE International, 1997. https://doi.org/10.5006/c1997-97356.

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Abstract The stress corrosion characteristics of uniaxial glass fibre reinforced thermosetting resin composites have been examined in Hydrochloric acid at room temperature and 80 °C. A simple technique based on linear elastic fracture mechanics (LEFM) is presented for characterising crack growth in these materials subjected to hostile acidic environments. The environmental stress corrosion cracking is investigated both for different types of resin and different types of glass fibre reinforcements. Two matrices were used: Bis-A epoxy vinyl ester resin (based on Bisphenol-A epoxy resin) and novo

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Szwedowicz, Jaroslaw, Piotr Bednarz, Christoph Meilgen, and Jeff Samuelson. "Crack Growth Under Cyclic Loading and Plasticity Conditions." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25450.

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The increasing use of renewable energy sources to produce electricity requires additional operational flexibility from fossil-fuel gas and steam turbines. To compensate for renewable energy fluctuations in the electrical grid, a gas turbine (GT) engine needs to be more flexible, operating in peaking and partial loading modes as well as the base-load operation mode. Understanding how these different modes affect the lifetime of turbine components is critical to ensuring favourable RAM (Reliability, Availability, and Maintainability). Component lifetimes in peaking modes are limited by the numbe

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Guediche, Amira, Hervé Piombini, Christophe Boscher, et al. "Mechanical Characterizations of elastic layers made by sol-gel." In Optical Interference Coatings. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/oic.2022.tea.6.

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To characterize the mechanical properties of elastic thin films to improve the lifetime of LMJ components, two experimental setups have been used: the acoustic picosecond techniques and the Surface Acoustic Wave InterDigital Transducers.

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Hu, Yifeng, Puning Jiang, Xingzhu Ye, et al. "Lifetime Assessment of Steam Turbine Casing." In ASME Turbo Expo 2015: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/gt2015-43495.

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Nowadays, in order to accommodate electrical grids that include fluctuating supplies of green energy, more and more fossil power plants are increasingly required to start up and shut down frequently. The increased number of stress cycles leads to a significant reduction of lifetime. In this paper, numerous load cycles of steam turbine casing including various start up and shut down conditions were numerically investigated by using the finite element analysis (FEA). The total strain throughout the cycles was directly calculated by the elastic-plastic material model. The delta equivalent total s

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Trieglaff, Ralf, Christian Schrandt, Axel Schulz, and Mayk Schulz. "TUEV NORD Concept Loop: Lifetime Optimisation of Pipelines." In ASME 2014 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/pvp2014-28755.

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LOOP is a concept to evaluate corroded or damaged pipelines based on detailed data from UT-pigging. The procedure of LOOP delivers a 3D-model generated from the data of a commercial in-line inspection tools (ultrasonic, magnetic flux). This makes it possible to use the full functionalities of the relevant finite element software like evaluation of wall-thinning (LOOP 1) and fracture mechanics analysis to evaluate cracks in the wall (LOOP 2). In this paper is given the basic ideas of the LOOP concept, where the main focus is directed to the LOOP 1 assessment procedure. Based on a real example o

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Martin, May L., Peter E. Bradley, Damian Lauria, Robert L. Amaro, Matthew Connolly, and Andrew J. Slifka. "Strain-Life Performance in Hydrogen of a Dot Pressure Vessel Steel." In ASME 2022 Pressure Vessels & Piping Conference. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/pvp2022-81492.

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Abstract Strain-life testing of a 4130 pressure vessel steel was conducted in air and in a high-pressure gaseous-hydrogen environment. Hydrogen causes an order of magnitude decrease in lifetime compared to in-air performance at the same strain-amplitudes. This decrease in lifetime in hydrogen is accompanied by various effects, such as a shift in the cyclic stress-strain curve, different influences on the elastic and plastic components of the strain-life data, and a distinct difference in the evolution of the microstructural texture prior to failure. For comparison, preliminary data from testin

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Bunsell, Anthony R., Franc¸oise Barbier, Alain Thionnet, Hasnae Zejli, and Brian Besanc¸on. "Damage Accumulation and Lifetime Prediction of Carbon Fiber Composite Pressure Vessels." In ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference. ASMEDC, 2010. http://dx.doi.org/10.1115/pvp2010-25978.

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Efficient storage of hydrogen is critical to the success of transition markets for hydrogen energy. For these near-term niche markets, high pressure compressed gas storage in carbon fiber composite pressure vessels is currently the most advanced and promising technology. However, challenges remain to improve performance and reliability while still insuring the safety of these pressure vessels in service over periods of 15 to 20 years. In order to avoid overdesign and conservative use, a fundamental understanding of damage mechanisms and degradation of these materials is required to fully explo

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Allen, D. G., S. W. Kim, and M. S. Sherwin. "Lifetime measurements of excited neutral donor states in GaAs detected by resonant elastic light scattering." In 2006 Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference. IEEE, 2006. http://dx.doi.org/10.1109/cleo.2006.4627700.

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Bednarz, Piotr, and Jaroslaw Szwedowicz. "On Conservative CTOD Estimation Using Far Crack Deformation Field." In ASME Turbo Expo 2013: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/gt2013-95411.

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In general engineering practice, crack tip opening displacement (CTOD) is very convenient approach for prediction of the components fracture mechanics (FM) lifetime. FM lifetime calculations are defined very well in industry and the lifetime prediction methods based on the CTOD resolve linear and nonlinear material behavior for monotonic and cyclic responses. The experiments confirm that under plasticity conditions the crack tip blunts for small scale or large scale yielding while, crack flanks open against each other only under elastic conditions. However, the CTOD application requires a very

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Dong, Hui, Chang-Jiu Li, Hang Ding, Guan-Juan Yang, and Cheng-Xin Li. "Effect of MCrAlY Bond Coat Temperature on Thermal Cyclic Lifetime of Plasma-Sprayed Thermal Barrier Coatings." In ITSC2015, edited by A. Agarwal, G. Bolelli, A. Concustell, et al. ASM International, 2015. http://dx.doi.org/10.31399/asm.cp.itsc2015p0795.

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Abstract Gradient thermal cycling test was performed on atmospheric plasma sprayed (APS) thermal barrier coatings (TBCs) to examine the influence of the bond coat temperature on the thermal cyclic lifetime. The TBC system consisted of Inconel 738 substrate, cold-sprayed NiCoCrAlTaY bond coat (BC) and plasma-sprayed yttria-stabilized zirconia (YSZ) top coat. Every thermal cycling test included 70s heating, 50s holding and 120s cooling. The temperature of top YSZ surface was about 1150 °C, while the bond coat temperatures were 900°C, 950°C and 1000°C, respectively. Results indicated that the lif

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