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On Interconversion of Various Material Functions of PMMA

Sane, S. B. and Knauss, W. G. (2001) On Interconversion of Various Material Functions of PMMA. Mechanics of Time-Dependent Materials, 5 (4). pp. 325-343. ISSN 1385-2000. doi:10.1023/a:1012586719210.

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The interconversion between various linear viscoelastic functions for Poly (methyl) methacrylate (PMMA) is explored. With the availability of four time or frequency-dependent material functions (shear, bulk, uniaxial and Poisson) on the same material, various material functions are computed using the correspondence principle of the linearized theory of viscoelasticity through the use of standard relations. Computed material functions are evaluated against the directly measured properties and the limitations imposed on successful interconversion due to the experimental errors in the underlying physical data are explored.It is observed that the differences between the computed and measured functions were larger than suggested by experimental error. The results intimates the need to thoroughly re-examine the applicability of time-temperature superposition principle often employed to develop 'master curves' for viscoelastic functions, especially with respect to the glassy domain.

Item Type:Article
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Additional Information:© Kluwer Academic Publishers 2001. (Received 31 July 2000)
Subject Keywords:bulk, interconversion, linearly viscoelastic properties, PMMA, Poisson, shear, time-temperature superposition, uniaxial
Issue or Number:4
Record Number:CaltechAUTHORS:20191008-111635947
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Official Citation:Sane, S. & Knauss, W. Mechanics of Time-Dependent Materials (2001) 5: 325.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:99152
Deposited By: George Porter
Deposited On:08 Oct 2019 20:20
Last Modified:16 Nov 2021 17:44

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