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Nano-scale Creep Compliance of Hybrid Aerogels
MRS Proceedings, 2011 ABSTRACTThe copolymerization between TEOS (tetraethoxysilane) and silane derivatives was promoted by the application of high power ultrasound to the precursor liquid mixtures in the same way as in the classical sol-gel method. The specific organic precursor was selected from the silanol-terminated polymer family with different molecular functionality ...
N. de la Rosa-Fox +3 more
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Obtaining Creep Compliance Parameters Accurately from Static or Cyclic Creep Tests
Journal of ASTM International, 2005 Obtaining creep compliance parameters that accurately represent the creep response of asphalt mixtures is critical for proper evaluation of the thermal cracking performance, as well as load induced cracking performance of asphalt pavements. A power law, which uses three parameters to describe the creep compliance curve, is commonly used for asphalt ...
J Kim, R Roque, B Birgisson
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Measurement of Creep Compliance of Solid Polymers by Nanoindentation
Mechanics of Time-Dependent Materials, 2003Methods to measure the local surface creep compliance of time-dependent materials are proposedand validated in the regime of linear viscoelasticity using nanoindentation. Two different bulkpolymers, Polymethyl Methacrylate (PMMA) and Polycarbonate (PC), were employed in thevalidation study; though it is expected that the methods developed herein can be
Hongbing Lu, H Viswanathan
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Local calibration of creep compliance models of asphalt concrete
Construction and Building Materials, 2017Abstract Thermal cracking is one of the main asphalt concrete distresses. Asphalt pavements typically experience thermal cracking at an early stage of their service life. The Mechanistic-Empirical Pavement Design (MEPDG) software utilizes a thermal cracking model to predict low temperature performance (NCHRP, 2004).
Saman Esfandiarpour, Ahmed Shalaby
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Investigation of Asphalt Mixture Creep Compliance at Low Temperatures
Road Materials and Pavement Design, 2008ABSTRACT The creep compliance is one of the main material characteristics used to describe low temperature behavior of the asphalt mixtures. It also serves as a primary input to the current thermal cracking model in the US that is used to predict thermally induced cracking in asphalt pavements over their service life. The current standard method in the
Adam Žofka +2 more
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Polymer Testing, 2012 This paper presents a convenient method which is referred to as "Revised Step-Hold" method for determination of shear creep compliance of linear viscoelastic-plastic solids using instrumented indentation. Its main idea is using the revised
Guangjian Peng +2 more
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Creep compliance rheology with a probe-like cylindrical geometry
Biorheology, 2017Background: Rheology experiments have been performed on the vitreous humor, a soft gel that rests inside of the eye, to study its viscoelastic behavior and underlying macromolecular structure. A significant challenge for experimentalists is preserving the macromolecular structure when removing vitreous from in vivo conditions.
Kelly, Connelly +4 more
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Creep compliance response of a cohesive soil
Journal of the Franklin Institute, 1965Abstract The creep response of a cohesive soil tested in uniaxial compression is presented in terms of a creep compliance function. The variables considered include strain, time, stress level, and moisture content. The soil response is definitely nonlinear, but the stress dependence of the creep compliance is written in explicit form.
Robert L. Kondner, Raymond J. Krizek
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Dilational creep compliance in Langmuir polymer films
Soft Matter, 2011Creep compliance is a simple rheological tool to study flow properties in soft matter. As a proof of concept we have studied the dilational flow of Langmuir films made of poly(vinylacetate), a model flexible polymer. The creep response has been probed at different stresses, pointing out the existence of compliance features.
Hani Hilles, Francisco Monroy
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Creep compliance mapping by atomic force microscopy
Polymer, 2014Abstract We present a method for mapping the spatial distribution of viscoelastic properties of heterogeneous samples using the atomic force microscope (AFM). By applying a force step load protocol to induce time dependent sample indentations we measured the local creep compliance of the sample.
Christoph Braunsmann +3 more
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