Fourier-transform rheology

Wilhelm, Manfred; Maring, Daniel; Spieß, Hans Wolfgang

doi:10.1007/s003970050126

Cited by 296 publications

(183 citation statements)

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“…These two parameters define an experimental test space in which results can be compactly represented, which is now known as the Pipkin diagram (Pipkin (1972) Methods for analyzing LAOS include Lissajous curves (Philippoff (1966); Tee and Dealy (1975)), Fourier transform rheology (e.g. Wilhelm (2002)), Stress decomposition (Cho et al (2005); Ewoldt et al (2008); Yu et al (2009)), computation of viscoelastic moduli (Hyun et al (2002); Ewoldt et al (2008)), decomposition into characteristic waveforms (Klein et al (2007)), and analysis of parameters related to Fourier transform rheology (Debbaut and Burhin (2002); Hyun and Wilhelm (2009)). A unifying framework, or ontology, for LAOS was recently proposed by Ewoldt et al (2008) which introduced a number of physically-meaningful material measures for LAOS tests and identified the inter-relation between some of the different approaches listed above.…”

Section: /46mentioning

confidence: 99%

“…The rheological response of a complex fluid in LAOS can be characterized by numerous material parameters, including strain-and frequency-dependent viscoelastic moduli and higherharmonic coefficients Wilhelm (2002). In this section we consider the expected behavior of such viscoelastic parameters for a yield stress fluid in response to large amplitude deformation.…”

Section: Quantitative Indicators Of Plastic Behavior In Laosmentioning

confidence: 99%

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Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials

et al. 2009

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Section: /46mentioning

confidence: 99%

Section: Quantitative Indicators Of Plastic Behavior In Laosmentioning

confidence: 99%

Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials

et al. 2009

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“…The experiments were performed in the ARES using the software developed by Wilhelm [2002]. It was expected that the method may be suitable for characterization of the nonlinear viscoelastic response of CPNC.…”

Section: Fourier Transform Analysis Of Cpncsmentioning

confidence: 99%

Rheology of Polymers with Nanofillers

2010

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“…The use of infinite Fourier series (FT-Rheology) to perform signal decomposition has been widely used (25,16,55,24,17,18,23,57,58,60,21), following a common practice in many other fields of science to describe non-sinusoidal signals. On the other hand, the stress decomposition (SD) analysis (4) uses symmetry arguments and different basis functions to decompose the nonlinear stress response wave into elastic σ and viscous σ components.…”

Section: Motivationmentioning

confidence: 99%

“…Wilhelm et al (57,58,59,55) developed the methodology for high sensitivity Fourier transform (FT) rheology by transferring techniques from NMR spectroscopy to oscillatory rheometery on commercial rheometers. Their work is distinguished by the development and use of extremely sensitive detection methods, obtaining high resolution torque signals from commercial rheometers (53).…”

Section: Most Used Framework To Analyze Materials Under Laosmentioning

confidence: 99%

A Novel and Straightforward Methodology to Analyze Materials Under Constant-Structure Oscillatory Motion (Saos and Ql-Laos)

LEITE¹

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A novel and straightforward methodology to analyze materials under constant-structure oscillatory motion (SAOS and QL-LAOS)Dissertation presented to the Programa de Pós-graduação em Engenharia Mecânica of PUC-Rio in partial fulfillment of the requirements for the degree of Mestre em Engenharia Mecânica. Approved by the undersigned Examination Committee. Prof. Paulo Roberto de Souza Mendes Advisor Departamento de Engenharia Mecânica -PUC-Rio Prof. Roney Leon Thompson Programa de Engenharia Mecânica -COPPE -UFRJ Dr. Flávio Henrique Marchesini de Oliveira Departamento de Engenharia Mecânica -PUC-Rio Prof. Márcio da Silveira CarvalhoVice Dean of Graduate Studies Centro Técnico Científico -PUC-Rio Rio de Janeiro, September the 13th, 2017 PUC-Rio -Certificação Digital Nº 1521990/CA All rights reserved. Ricardo Teixeira LeiteRicardo Teixeira Leite graduated in Mechanical Engineering at Pontifical Catholic University of Rio de Janeiro (PUC-Rio) in 2015. Then, he started to work as a research engineer with rheology and non-Newtonian fluid mechanics in the Rheology Group (GReo) at PUC-Rio, where he was already involved in research activities for three years as an undergraduate student AcknowledgmentsI would like to first thank my advisor Paulo Roberto de Souza Mendes for our partnership along the last six years. I've learned a lot from you as an engineer and as a person. I would also like to thank Monica Nacacche for leading our research group alongside Paulo, always being a pleasent and important presence in our meetings. I'm also indebted to CNPq for providing me a scholarship and for the financial support to this research.Then, I wish to thank all my fellow coworkers at the Rheology Group. Especially my "roomates" Aline Abdu, Bruna Leopércio, Carina Beline and Priscilla Varges. Thank you, Aline, for always listening to me whine during lunch and calming me down; Bruna for our beautiful friendship that preceds and will outlive our workmate relationship; Carina for the friday afternoons (listening to sertanejo out loud); and Priscilla for interrupting all of your (MANY) tasks to help me whenever I asked you a technical question (even though I didn't intend to have that much attention to the matter). I would also like to especially thank Eliana Marin for the incredible work on our parallel research with Petrobras and for holding the fort during the time I was focused on my thesis. I would also like to thank Flávio, for introducing me to research; and Alexandra, for giving me an everyday guidance throughout my graduation, making it possible for me to continue her research. At last, for your friendship, I would like to thank Pedro, Bruno, Elias, Behbood, PH, Roberta and Tati.I believe true happiness is achieved through relationships, including the one you have with yourself. Hence, I am silently thanking every person that I eventually crossed paths with. Each of you helped me on this journey of becoming who I am today. However, I want to formally address some of those.First, I would like to thank my family. You've been by m...

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Fourier-transform rheology

Cited by 296 publications

References 0 publications

Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials

Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials

Rheology of Polymers with Nanofillers

A Novel and Straightforward Methodology to Analyze Materials Under Constant-Structure Oscillatory Motion (Saos and Ql-Laos)

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