Relevant bibliographies by topics / Viscoelastic material properties

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Viscoelastic material properties'

Author: Grafiati
Published: 3 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Viscoelastic material properties"

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Mohammadpour, Mehrdad, Hassan Asadigandomani, Mehdi Aminizade, and Saeed Raeisi. "Physical Characteristics, Clinical Application, and Side Effects of Viscoelastics in Ophthalmology." Journal of Current Ophthalmology 35, no. 4 (2023): 313–19. http://dx.doi.org/10.4103/joco.joco_178_23.

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Abstract Purpose: To explain the physical properties of ophthalmic viscoelastic devices (OVDs), covering their structural units, optimal features, existing viscoelastic materials, clinical applications, and potential side effects. Methods: This is a narrative review on the OVDs. A literature review was conducted in PubMed, Google Scholar, and Scopus databases. Studies that investigated physical characteristics, clinical applications, OVD commercial products, and their complications were included. Results: We included 42 articles from 2010 and discussed physical characteristics, properties of a desirable OVD, structural units of common OVDs, OVD commercial products, clinical applications, and also complications of OVDs. Conclusions: Today, viscoelastics hold a distinct and crucial role in intraocular surgery due to their remarkable properties. These materials safeguard the endothelium and epithelium, uphold anterior chamber depth, manage intraocular bleeding, ease tissue handling, and aid intraocular lens placement. Currently, the American market features 12 prevalent viscoelastic types, including 7 sodium hyaluronate derivatives (Healon, Healon-Greater Viscosity, Healon-5, Amvisc, Amvisc Plus, Advanced Medical Optics Vitrax, and Provisc), 2 hydroxypropyl methylcellulose 2% derivatives (OcuCoat and Cellugel), and 3 combinations of sodium hyaluronate and chondroitin sulfate (Viscoat, DisCoVisc, and DuoVisc). Despite the introduction of new viscoelastic materials annually, no single material encompasses all desired properties. Surgeons must select and employ suitable viscoelastics based on surgical conditions and patient requirements. Advancements in material development and understanding of physical properties and clinical applications continue to refine viscoelastic selection.
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Qausar, Mohammad. "Attenuation properties of viscoelastic material." Pure and Applied Geophysics PAGEOPH 131, no. 4 (1989): 703–13. http://dx.doi.org/10.1007/bf00876269.

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Lin, Che-Yu, Yi-Cheng Chen, Chin Pok Pang, and Tung-Han Yang. "Measurement Accuracy of Ultrasound Viscoelastic Creep Imaging in Measuring the Viscoelastic Properties of Heterogeneous Materials." Advances in Technology Innovation 7, no. 4 (2022): 229–41. http://dx.doi.org/10.46604/aiti.2022.9592.

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Ultrasound viscoelastic creep imaging (UVCI) is a newly developed technology aiming to measure the viscoelastic properties of materials. The purpose of this study is to investigate the accuracy of UVCI in measuring the viscoelastic properties of heterogeneous materials that mimic pathological lesions and normal tissues. The finite element simulation is used to investigate the measurement accuracy of UVCI on three material models, including a homogeneous material, a single-inclusion phantom, and a three-layer structure. The measurement accuracy for a viscoelastic property is determined by the difference between the simulated measurement result of that viscoelastic property and its true value defined during the simulation process. The results show that UVCI in general cannot accurately measure the true values of the viscoelastic properties of a heterogeneous material, demonstrating the need to further improve the theories and technologies relevant to UVCI to improve its measurement accuracy on tissue-like heterogeneous materials.
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Sun, Na, Kuan Jun Zhu, Bin Liu, Sheng Chun Liu, and Liang Liu. "Application Study of Viscoelastic Damping Material for the Anti-Galloping of Overhead Transmission Lines." Advanced Materials Research 884-885 (January 2014): 269–72. http://dx.doi.org/10.4028/www.scientific.net/amr.884-885.269.

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Based on the galloping mechanism of transmission line, it is determined to use viscoelastic damping material and energy effects of TMD to suppress galloping. The dynamic mechanical properties of viscoelastic damping material is studied, with the operating environment of the transmission lines, high-and-low-temperature physics experiment is carried out, while the experimental study on mechanical properties is carried out with the developed viscoelastic damping elements. It is showed that the viscoelastic material meets the anti-galloping device performance requirements for materials, it has a good energy consumption effect, suitable for application to anti-galloping of transmission lines.
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Yakubovskiy, Yuriy E., Vasiliy I. Kolosov, Irina A. Donkova, and Sergey O. Kruglov. "Modeling Viscoelastic Properties of Aging Material." Tyumen State University Herald. Physical and Mathematical Modeling. Oil, Gas, Energy 4, no. 4 (2018): 181–90. http://dx.doi.org/10.21684/2411-7978-2018-4-4-181-190.

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GAMOTA, DANIEL R., and FRANK E. FILISKO. "LINEAR/NONLINEAR MECHANICAL PROPERTIES OF ELECTRORHEOLOGICAL MATERIALS." International Journal of Modern Physics B 06, no. 15n16 (1992): 2595–607. http://dx.doi.org/10.1142/s0217979292001316.

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The stress response of an electrorheological (ER) material is modified by the application of an electric field. Various studies have shown that the ER material can behave as a linear viscous, linear viscoelastic, nonlinear viscoelastic, plastic, or viscoelastic-plastic body. Furthermore, several different experimental techniques are conducted to observe the ER material's behavior as a function of strain, strain frequency, field strength, and ER material concentration. Small amplitude dynamic studies are used to observe the ER material's linear viscoelastic properties, while moderate and large amplitude studies are used to observe the material's fundamental nonlinear dynamic properties. Finally, constant shear rate experiments are performed to observe the apparent viscosity of the ER material during flow conditions.
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Blanchard, James P., and Nasr M. Ghoniem. "Relaxation of Thermal Stress Singularities in Bonded Viscoelastic Quarter Planes." Journal of Applied Mechanics 56, no. 4 (1989): 756–62. http://dx.doi.org/10.1115/1.3176169.

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Singular thermal stress fields in bonded viscoelastic quarter planes are studied with the use of the viscoelastic analogy. The order of the singularity is shown to depend on the material properties, indicating that it will vary with time in viscoelastic materials. This is studied in detail for Maxwell materials, and it is shown that the order of the singularity generally increases with time. This evolution of the singularity can, for certain combinations of material properties, lead to initial increases in the stress levels near the edge of the interface before relaxation occurs.
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Tabakci, Alican, and Erhan Ilhan Konukseven. "Mechanical Properties Identification of Viscoelastic/Hyperplastic Materials Using Haptic Device Based Experimental Setup." Key Engineering Materials 486 (July 2011): 115–18. http://dx.doi.org/10.4028/www.scientific.net/kem.486.115.

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Mechanical behavior simulation of viscoelastic materials is a difficult task. In order to obtain accurate simulations, material model should be well chosen and hyperelastic characteristics of the viscoelastic materials should also be incorporated in the model. Once the material model is selected the coefficients can be identified with the help of mechanical tests/experiments. The main goal of this study is to optimize material model’s coefficients by using the designed indenter test setup results and inverse finite element modeling. Indenter test setup was designed by using a haptic device, force sensor and data acquisition card to test the mechanical properties of the viscoelastic/hyperelastic materials. Inverse finite element modeling method is used in order to model the materials according to their material characteristics. The model obtained from the analysis was optimized by using the data obtained from indenter tests. The conformity of the chosen model and the tested materials is shown by inverse finite element modeling and the material model coefficients are proved to be identified correctly.
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Lee, Hyun, Y. Richard Kim, and Seung Lee. "Prediction of Asphalt Mix Fatigue Life with Viscoelastic Material Properties." Transportation Research Record: Journal of the Transportation Research Board 1832, no. 1 (2003): 139–47. http://dx.doi.org/10.3141/1832-17.

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A simplified fatigue model is presented that can predict the fatigue life of asphalt mixes using viscoelastic properties only. This fatigue model was originally developed with the elastic-viscoelastic correspondence principle and continuum damage mechanics and was reduced to a simple version that can predict fatigue life with viscoelastic properties only. On the basis of the experimental study conducted on 12 different types of asphalt mixes, it was observed that the fatigue behavior of asphalt mixes is affected by both the viscoelastic properties and the fatigue characteristics, but mostly by the viscoelastic properties. In addition, it was found that the coefficient of conventional strain-based fatigue models could be expressed in terms of viscoelastic material properties. In the verification study, the fatigue model was able to predict the fatigue life of various types of mixes at the same level of prediction accuracy without change in model coefficients. The fatigue model was also able to accurately predict the changes in the fatigue life of an asphalt mix due to the changes in the volumetric mix properties.
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Meisel, Nicholas Alexander, David A. Dillard, and Christopher B. Williams. "Impact of material concentration and distribution on composite parts manufactured via multi-material jetting." Rapid Prototyping Journal 24, no. 5 (2018): 872–79. http://dx.doi.org/10.1108/rpj-01-2017-0005.

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Purpose Material jetting approximates composite material properties through deposition of base materials in a dithered pattern. This microscale, voxel-based patterning leads to macroscale property changes, which must be understood to appropriately design for this additive manufacturing (AM) process. This paper aims to identify impacts on these composites’ viscoelastic properties due to changes in base material composition and distribution caused by incomplete dithering in small features. Design/methodology/approach Dynamic mechanical analysis (DMA) is used to measure viscoelastic properties of two base PolyJet materials and seven “digital materials”. This establishes the material design space enabled by voxel-by-voxel control. Specimens of decreasing width are tested to explore effects of feature width on dithering’s ability to approximate macroscale material properties; observed changes are correlated to multi-material distribution via an analysis of ingoing layers. Findings DMA shows storage and loss moduli of preset composites trending toward the iso-strain boundary as composition changes. An added iso-stress boundary defines the property space achievable with voxel-by-voxel control. Digital materials exhibit statistically significant changes in material properties when specimen width is under 2 mm. A quantified change in same-material droplet groupings in each composite’s voxel pattern shows that dithering requires a certain geometric size to accurately approximate macroscale properties. Originality/value This paper offers the first quantification of viscoelastic properties for digital materials with respect to material composition and identification of the composite design space enabled through voxel-by-voxel control. Additionally, it identifies a significant shift in material properties with respect to feature width due to dithering pattern changes. This establishes critical design for AM guidelines for engineers designing with digital materials.
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Dissertations / Theses on the topic "Viscoelastic material properties"

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Karlsson, Patrik. "Determination of viscoelastic properties of adhesives." Thesis, Linnéuniversitetet, Institutionen för byggteknik (BY), 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-35521.

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A research project at Linnaeus University focuses on optimizing theadhesives joints between wood and glass, with the aim of obtain stiffcomponents that can act as a load and stabilizing elements and still betransparent. But there is, however, still a lack of knowledge regarding theadhesive materials which need to be further investigated. This thesis focused on testing six different adhesives in relaxation and todetermine the viscosity (η) and modulus of elastic (MOE, E). Viscosity andMOE are then used in combination in a standard linear solid model (SLS)describing the viscoelasticity mathematically. Figures and tables are used topresent the results and the evaluation. The so determined parameters can beused in e.g. finite element models for the design of load bearing timber glasscomposites.
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Iqbal, Shaheer. "Characterization of Viscoelastic Properties of a Material Used for an Additive Manufacturing Method." Thesis, University of North Texas, 2013. https://digital.library.unt.edu/ark:/67531/metadc407787/.

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Recent development of additive manufacturing technologies has led to lack of information on the base materials being used. A need arises to know the mechanical behaviors of these base materials so that it can be linked with macroscopic mechanical behaviors of 3D network structures manufactured from the 3D printer. The main objectives of my research are to characterize properties of a material for an additive manufacturing method (commonly referred to as 3D printing). Also, to model viscoelastic properties of Procast material that is obtained from 3D printer. For this purpose, a 3D CAD model is made using ProE and 3D printed using Projet HD3500. Series of uniaxial tensile tests, creep tests, and dynamic mechanical analysis are carried out to obtained viscoelastic behavior of Procast. Test data is fitted using various linear and nonlinear viscoelastic models. Validation of model is also carried out using tensile test data and frequency sweep data. Various other mechanical characterization have also been carried out in order to find density, melting temperature, glass transition temperature, and strain rate dependent elastic modulus of Procast material. It can be concluded that melting temperature of Procast material is around 337°C, the elastic modulus is around 0.7-0.8 GPa, and yield stress is around 16-19 MPa.
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Kashani, Pooria Sharif. "An ex-situ material state monitoring of curing based on viscoelastic properties in polymer composites." Thesis, Wichita State University, 2007. http://hdl.handle.net/10057/1563.

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It is well known that time and temperature are not direct measurements of either material state during cure or mechanical properties after cure in polymer composites. Rather, in current practice, the viscoelastic properties and mechanical properties during cure are merely assumed based on an extensive statistical data of time and temperature history of the material. This practice is time-consuming and costly. In this study, an ex-situ estimation of the actual material states using advanced analytical instruments has been proposed and validated. An encapsulated sample rheometer was used as the main ex-situ instrument capable of measuring with high repeatability and robustness necessary for the validation of viscoelastic curing models of composites (especially prepregs) at production level. This rheometer was coupled with Differential Scanning Calorimetry (DSC) to obtain a correlation of the key variables of curing and the actual material states. Experimental and analytical modeling studies of the viscoelastic properties and thermal properties of four commercial prepregs were conducted using these instruments. These key cure variables were directly correlated with the viscoelastic states of the material during cure. The viscoelastic properties such as storage modulus, loss modulus, and tanδ and the glass transition temperature of the Advanced Composite Group (ACG) MTM45 and MTM45-1 prepregs and Cytec 977-2 PW and 977-2 UD prepregs were measured using the rheometer during different isothermal cure cycles below the final glass transition temperature (g∞ T). Thermal analysis of 977-2 PW and 977-2 UD prepregs was obtained using the DSC and these thermal results were correlated to the rheometry measurements. Glass transition temperatures (g T) of the cure cycles were measured using both rheometry and DSC techniques. A semi-empirical curing model, based on the viscoelastic properties of prepregs, was developed and compared with the experimental data collected at a constant frequency. A process engineer could use this curing model to monitor, control, and optimize a cure process, and to aid in the curing of parts that have time and temperature history discrepancies. This model can be statistically correlated to critical composite properties and can be validated with time and temperature feedback. Therefore, temperature sensors, such as thermocouples, would remain as the primary in-situ sensors and there would be no need for material state sensors inside the autoclave or other processing units.<br>Thesis (M.S)-- Wichita State University, College of Engineering, Dept. of Mechanical Engineering<br>"December 2007."
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Kashani, Pooria Sharif Minaie Bob. "An ex-situ material state monitoring of curing based on viscoelastic properties in polymer composites /." Thesis, A link to full text of this thesis in SOAR, 2007. http://hdl.handle.net/10057/1563.

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Fincan, Mustafa. "Assessing Viscoelastic Properties of Polydimethylsiloxane (PDMS) Using Loading and Unloading of the Macroscopic Compression Test." Scholar Commons, 2015. https://scholarcommons.usf.edu/etd/5480.

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Polydimethylsiloxane (PDMS) mechanical properties were measured using custom-built compression test device. PDMS elastic modulus can be varied with the elastomer base to the curing agent ratio, i.e. by changing the cross-linking density. PDMS samples with different crosslink density in terms of their elastic modulus were measured. In this project the PDMS samples with the base/curing agent ratio ranging from 5:1 to 20:1 were tested. The elastic modulus varied with the amount of the crosslinker, and ranged from 0.8 MPa to 4.44 MPa. The compression device was modified by adding digital displacement gauges to measure the lateral strain of the sample, which allowed obtaining the true stress-strain data. Since the unloading behavior was different than the loading behavior of the viscoelastic PDMS, it was utilized to asses viscoelastic properties of the polymer. The thesis describes a simple method for measuring mechanical properties of soft polymeric materials.
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Farukh, Farukh. "Experimental and numerical analysis of deformation and damage in thermally bonded nonwoven material." Thesis, Loughborough University, 2013. https://dspace.lboro.ac.uk/2134/12812.

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Senan, Anish Sen. "Determination of the Viscoelastic Properties of General Anisotropic Materials." Fogler Library, University of Maine, 2003. http://www.library.umaine.edu/theses/pdf/SenanAS2003.pdf.

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Eskandari, Hani. "On the identification of mechanical properties of viscoelastic materials." Thesis, University of British Columbia, 2009. http://hdl.handle.net/2429/6051.

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Commonly used medical imaging techniques can render many properties of the anatomy or function, but are still limited in their ability to remotely measure tissue mechanical properties such as elasticity and viscosity. A remote and objective palpation function would help physicians in locating possible tumors or malignancies. The branch of medical imaging that characterizes tissues mechanical properties in a non-invasive manner has enjoyed increasing interest in the past two decades. The basic principle is to apply an excitation, such as tissue compression, to a region of interest and measure the resulting tissue deformation. Tissue mechanical properties can then be inferred from the observed deformation at multiple locations in the region, and the properties can be displayed as an image. If the excitation is dynamic, the deformation is considered as a motion field that varies in time and location over the region of interest. Ultrasound is particularly well suited for measuring motion fields due to its ability to image in real-time, low cost, low risk and ease-of-accessibility. The focus of this thesis is the estimation of the viscoelastic parameters such as Young's modulus, viscosity and relaxation-time. For this purpose, a motion estimation method is proposed to measure axial tissue displacements from the peak of the ultrasound radio frequency signals. The displacements can be further processed to identify the mechanical properties. Two methods were developed: the first one is based on a one dimensional Voigt's model of soft tissue and the second one is based on a finite element model. In the first method, a single frequency or wide-band excitation is applied to the tissue and the local relaxation-time is recovered from the phase difference between the strains or displacements. In this method, the elasticity can also be reconstructed from the magnitudes of the spectra. In the second approach, a novel dynamic finite element model is proposed for the incompressible soft materials. An inverse problem of viscoelasticity is solved iteratively to reconstruct the viscosity and elasticity based on a two or three dimensional model. The theoretical aspect of compressional elastography and longitudinal wave propagation is investigated. It is shown to be feasible to apply dynamic or transient compressional excitation to recover the dynamic properties of soft tissue.
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Biesel, Van Brian. "Experimental measurement of the dynamic properties of viscoelastic materials." Thesis, Georgia Institute of Technology, 1993. http://hdl.handle.net/1853/19249.

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Saber-Sheikh, Kambiz. "The viscoelastic properties of some dental soft lining materials." Thesis, Queen Mary, University of London, 1997. http://qmro.qmul.ac.uk/xmlui/handle/123456789/1709.

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The viscoelastic properties of soft lining materials are of enormous interest and importance as they clearly govern the biomechanical function of these materials. Forced vibration (Non-resonant) dynamic mechanical analysis was used to characterise the viscoelastic properties of a wide range of commercial (8 brands) as well as experimental soft liners (7 formulations). Forced vibration DMA is the ideal way of studying these materials as it can closely and accurately mimic physiological temperatures and frequencies under which they operate. The materials were studied as processed, and subsequently after simulated ageing for time periods up to twelve months. The water absorption and the subsequent changes in the viscoelastic behaviour of these materials are important as they spend a large part of their working lifetime immersed in solution. The results, where possible, were compared with the work of other researchers, and any sources of discrepancy examined. It was noted that the materials whose glass to rubber transition (Tg) was near their operating temperature (i.e. the acrylics) were particularly prone to any changes in the time and temperature domain of the experiment. A large variation was observed in the properties of the commercial materials available. At 37°C and 1 Hz a seven fold range was seen in the real part of the modulus (2.79-19.7 MPa), and a fifty fold range was observed in the loss tangent (0.029-1.52). Given this wide disparity it is surprising that a universally recommended range of properties does not exist, although there is some speculation in the literature. The study of the ageing behaviour of these materials in water showed that the traditional hardening of the acrylics has been overcome. A heat cured silicone material was seen to be virtually unaffected by time, while for a cold cured competitor the opposite was true. New and experimental materials showed a wide range of behaviour after immersion in water.
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Books on the topic "Viscoelastic material properties"

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George C. Marshall Space Flight Center., ed. The analytical representation of viscoelastic material properties using optimization techniques. National Aeronautics and Space Administration, George C. Marshall Space Flight Center, 1993.

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Drozdov, Aleksey D. Mechanics of viscoelastic solids. John Wiley Sons, 1998.

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Chevalier, Yvon. Mechanics of viscoelastic materials and wave dispersion. ISTE, 2010.

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Chevalier, Yvon. Mechanics of viscoelastic materials and wave dispersion. ISTE, 2010.

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Chevalier, Yvon. Mechanics of viscoelastic materials and wave dispersion. ISTE, 2010.

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Chevalier, Yvon. Mechanics of viscoelastic materials and wave dispersion. ISTE, 2010.

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IUTAM Symposium on Rheology of Bodies with Defects (1997 Beijing, China). IUTAM Symposium on Rheology of Bodies with Defects: Proceedings of the IUTAM Symposium held in Beijing, China, 2-5 September 1997. Kluwer Academic Publishers, 1999.

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National Aeronautics and Space Administration (NASA) Staff. Analytical Representation of Viscoelastic Material Properties Using Optimization Techniques. Independently Published, 2018.

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Viscoelastic behavior of rubbery materials. Oxford University Press, 2011.

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Drozdov, Aleksey D. Mechanics of Viscoelastic Solids. Wiley & Sons, Incorporated, John, 2000.

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Book chapters on the topic "Viscoelastic material properties"

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Qaisar, Mohammad. "Attenuation Properties of Viscoelastic Material." In Scattering and Attenuation of Seismic Waves, Part II. Birkhäuser Basel, 1989. http://dx.doi.org/10.1007/978-3-0348-6363-6_6.

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Hilton, Harry H., John Hsu, and John S. Kirby. "Linear Viscoelastic Analysis with Random Material Properties." In Stochastic Structural Dynamics 1. Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84531-4_5.

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Brand, Howard, Tia Kauppila, Kayla Wielgus, et al. "Imager-Based Characterization of Viscoelastic Material Properties." In Topics in Modal Analysis & Testing, Volume 8. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-12684-1_22.

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Saseendran, S., M. Wysocki, and J. Varna. "Characterisation of Viscoelastic Material Properties During Curing Processes." In Challenges in Mechanics of Time Dependent Materials, Volume 2. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-22443-5_6.

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Simsiriwong, Jutima, Rani W. Sullivan, and Harry H. Hilton. "Master Creep Compliance Curve for Random Viscoelastic Material Properties." In Challenges In Mechanics of Time-Dependent Materials and Processes in Conventional and Multifunctional Materials, Volume 2. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00852-3_6.

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Retuerta del Rey, Guillermo, Andrea Fernández Gorgojo, Juan Pedro Fernández Blázquez, and Enrique Chacón Tanarro. "Calculation of Williams-Landel Ferry Shift Factors via Probe Tack Testing for Uncured Prepreg Materials." In Proceedings of the XV Ibero-American Congress of Mechanical Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-38563-6_7.

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AbstractKnowledge of the viscoelastic properties of the resin present in uncured pre-impregnated composites is essential for the development and optimization of current automated manufacturing processes for composite parts (AFP, ATL, FPP…). Time-temperature superposition applied to the tack force between the prepreg and the tool allows to optimize production times without influencing the viscoelastic behavior of the material by simply varying the temperature. The application of this time-temperature superposition principle requires the calculation of two parameters that depend on the matrix of the composite and that are usually calculated by rheological tests with pure resin samples. In this work, a novel method to obtain these parameters directly from the pre-impregnated composite material using adhesion tests is presented.
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Chin, Erica D., Jenny Ma, Christopher L. Lee, and Hernan J. Jara. "Correlations Between Quantitative MR Imaging Properties and Viscoelastic Material Properties of Agarose Gel." In Mechanics of Biological Systems and Materials, Volume 4. Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00777-9_22.

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Remillat, C., F. Thouverez, J. P. Laine, and L. Jézéquel. "Experimental Determination of the Dynamic Properties of a Soft Viscoelastic Material." In Mechanics of Sandwich Structures. Springer Netherlands, 1998. http://dx.doi.org/10.1007/978-94-015-9091-4_41.

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Jenkins, R. D., C. A. Silebi, and M. S. El-Aasser. "Steady-Shear and Linear-Viscoelastic Material Properties of Model Associative Polymer Solutions." In ACS Symposium Series. American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0462.ch013.

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Jager, Andreas, Christian Pichler, Thomas Niederkofler, and Roman Lackner. "Finer-Scale Extraction of Viscoelastic Properties From Materials Exhibiting Elastic, Viscous, and Plastic Material Behavior." In Experimental Analysis of Nano and Engineering Materials and Structures. Springer Netherlands, 2007. http://dx.doi.org/10.1007/978-1-4020-6239-1_249.

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Conference papers on the topic "Viscoelastic material properties"

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Fatima, Iqra Danish, Nadeem Shafi, and Hazeema Anjum. "Viscoelastic Properties of Rubber Material Modelling." In 2019 International Conference on Applied and Engineering Mathematics (ICAEM). IEEE, 2019. http://dx.doi.org/10.1109/icaem.2019.8853764.

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Fowler, B., and L. Rogers. "Viscoelastic material properties in a high pressure environment." In 34th AIAA/ASME/SAE/ASEE Joint Propulsion Conference and Exhibit. American Institute of Aeronautics and Astronautics, 1998. http://dx.doi.org/10.2514/6.1998-3868.

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Park, Seungbae, Soonwan Chung, Harold Ackler, and Sandeep Makhar. "Viscoelastic Material Properties of SU-8 and Carbon-Nanotube-Reinforced SU-8 Materials." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-16062.

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The viscoelastic material properties of SU-8 and carbon nanotube-reinforced SU-8 composite material are characterized by tensile testing. Dogbone samples of 0.1mm thickness are prepared by micro-fabrication process, which is composed of spin coat, soft bake, expose, and post exposure bake. To fabricate CNT polymer composite, carbon nano-tube of 0.2wt% is mixed with SU-8. To observe the effect of applied strain rate and temperature on Young's modulus and Poisson's ratio, strain rate is varied from 5×10-5 to 2.5×10-4 (/sec) at elevated temperatures in the range of 25 to 200°C. Since the viscoelastic material properties are important in polymer, creep, stress relaxation and dynamic mechanical analyses are performed at elevated temperatures. The viscoelastic material properties of SU-8 and CNT-reinforced SU-8 composite are compared, and the mechanical reliability of these polymers in MEMS applications is discussed.
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4

Allen, Bradley R. "Direct complex stiffness test system for viscoelastic material properties." In 1996 Symposium on Smart Structures and Materials, edited by Conor D. Johnson. SPIE, 1996. http://dx.doi.org/10.1117/12.239101.

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Chowdhury, Promod R., Jeffrey C. Suhling, and Pradeep Lall. "Modeling of Underfilled PBGA Assemblies Using Both Viscoelastic and Elastic Material Properties." In ASME 2019 International Technical Conference and Exhibition on Packaging and Integration of Electronic and Photonic Microsystems. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/ipack2019-6561.

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Abstract In microelectronics packaging industry, polymer based materials are used extensively. These polymer materials show viscoelastic behavior when subject to time dependent loads or deformations. The viscoelastic behavior highly depends on both temperature and time. In many cases, these viscoelastic properties are often neglected due to saving computational cost or unavailability of full characterization of the viscoelastic properties. To make accurate predictions of packaging mechanical behavior and reliability, it is important to accurately characterize the viscoelastic behavior of mold compounds, underfill encapsulants, adhesives and other polymers used in electronic assemblies. After characterization, these parameters can be used as input material property data for finite element analysis (FEA) simulations. In this study, both frequency dependent dynamic mechanical analysis (DMA) measurements, and strain and temperature dependent stress relaxation experiments were performed on a typical underfill material in order to characterize its linear viscoelastic behavior. In both cases, a master curve was determined using the assumption of time-temperature equivalence, and Prony series expansions were utilized to model the underfill material relaxation behavior. After that, these viscoelastic underfill material parameters were used in finite element models of underfilled ball grid array packages (Ultra CSP) subjected to thermal cycling from −40 to 125 °C. Separate simulations were also performed using temperature dependent elastic properties for the underfill material. In both cases, the solder joint fatigue life was estimated, and the effects of using viscoelastic properties for the underfill in solder joint fatigue life simulation were investigated.
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Mitra, Sreemanta, Dhriti Ranjan Saha, Sourish Banerjee, and Dipankar Chakravorty. "Viscoelastic properties of graphene/PVA nanocomposite." In PROCEEDING OF INTERNATIONAL CONFERENCE ON RECENT TRENDS IN APPLIED PHYSICS AND MATERIAL SCIENCE: RAM 2013. AIP, 2013. http://dx.doi.org/10.1063/1.4810111.

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Chowdhuri, M. A. K., and Z. Xia. "Stress Singularity Analysis of a Viscoelastic/Viscoelastic Bonded Joint." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-86372.

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Measurement of bi-material interface bonding strengths has drawn considerable attentions because damages or failures are most likely to occur at the interfaces in many advanced materials and structures. However, the measurement of the interface bonding strength is hindered by the presence of the stress singularity at the interface corner. In order to determine the actual bonding strength of bi-material interface, the determination/elimination of the stress singularity is thus very crucial. This paper presents an analytical model for the determination of the stress singularity and its elimination for a viscoelastic/viscoelastic bonded joint. Two viscoelastic materials with different material properties are considered for this study. Each material is modelled as a standard linear solid and the properties of both materials are considered as time-dependent. The elastic-viscoelastic corresponding principle is used to find the analytical solution for the subjected viscoelastic/viscoelastic bonded joint from the available analytical solution for an elastic/elastic bonded joint. The developed solution is applied for a bonded joint between Polyvinyl-chloride (PVC) and Epoxy materials. It is found that the stress singularity at the interface corner may increase with time due to the viscoelasticity of the materials. Finite element analyses have also been carried out to verify the results obtained from the analytical solution and the two results are in good agreement.
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Romanov, Vasily, Mobin Rastgar Agah, and Kurosh Darvish. "Viscoelastic Properties of Aorta From Oscillatory Pressure Tests." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53771.

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Aorta is the largest and most important artery in the body due to its role in conveying all of the oxygenated blood to smaller branches and ultimately to all of the organs in the body. Knowing its mechanical characteristics and material properties is a basic stage in almost all studies on aorta e.g. evaluating the effect of aging and disease, design and manufacturing of compatible stents and traumatic aortic rupture. Since blood vessels are non-homogeneous, non-linear viscoelastic materials and can experience large deformations, a unique formulation that can describe their mechanical behavior under various loading conditions has not been developed yet. Several previous studies looked into modeling of the blood vessels at large deformation, but the models developed did not include the time dependency of the material [1,2]. In this work, we characterized the material properties of aorta under biaxial oscillatory loading at large deformations taking into account its time dependency. A viscoelastic model was developed to describe the relationship between the inflation and pressure.
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Yao, Jiang, Victor D. Varner, Renato Perucchio, and Larry A. Taber. "Viscoelastic Material Properties of the Hamburger-Hamilton Stage 12 Chick Heart." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192766.

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Mechanical force is believed to play a significant role in regulating the morphogenetic process of cardiac looping. To better understand this process, it is crucial to determine the material properties of the early chick heart. It is well known that biological tissues are viscoelastic, however previous data on early stage embryonic heart tissue shows a hyperelastic behavior only [1] and currently, only late stage heart tissues have been quantified using viscoelastic properties [2]. The objective of this study is to use microindentation and nonlinear finite element method (FEM) to characterize the viscoelastic material properties of stage 12 chick heart during cardiac looping.
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Lucas, Scott R., Robert S. Salzar, and Cameron R. Bass. "Viscoelastic Properties of Spine Ligament Collagen Fascicles." In ASME 2008 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2008. http://dx.doi.org/10.1115/sbc2008-192643.

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Connective tissues, such as ligaments and tendons, are comprised of varying amounts of collagen, elastin, and ground substance. It is conceivable to develop a microstructural material model based on the volume fraction and orientation of each constituent, and their interactions.
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Reports on the topic "Viscoelastic material properties"

1

CSA ENGINEERING INC PALO ALTO CA. Properties of Viscoelastic Materials Under Centrifugal Loads. Defense Technical Information Center, 1998. http://dx.doi.org/10.21236/ada361420.

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