Working Paper Article Version 1 This version is not peer-reviewed

Viscoelastic Behaviour from Complementary Forced-Oscillation and Micro-Creep Tests

Version 1 : Received: 12 October 2019 / Approved: 13 October 2019 / Online: 13 October 2019 (16:55:05 CEST)

A peer-reviewed article of this Preprint also exists.

Jackson, I. Viscoelastic Behaviour from Complementary Forced-Oscillation and Microcreep Tests. Minerals 2019, 9, 721. Jackson, I. Viscoelastic Behaviour from Complementary Forced-Oscillation and Microcreep Tests. Minerals 2019, 9, 721.

Journal reference: Minerals 2019, 9, 721
DOI: 10.3390/min9120721

Abstract

There is an important complementarity between experimental methods for the study of high-temperature viscoelasticity in the time and frequency domains, that has not always been fully exploited. Here we show that parallel processing of forced-oscillation data and microcreep records, involving consistent use of either Andrade or extended Burgers creep-function models, yields a robust composite modulus-dissipation dataset spanning a broader range of periods than either technique alone. In fitting this dataset, the alternative Andrade and extended Burgers models differ in their partitioning of strain between the anelastic and viscous contributions. The extended Burgers model is preferred because it involves a finite range of anelastic relaxation times, and accordingly a well-defined anelastic relaxation strength. The new strategy offers the prospect of better constraining the transition between transient and steady-state creep, or equivalently, between anelastic and viscous behaviour.

Subject Areas

viscoelasticity; anelasticity; creep function; forced-oscillation methods; micro creep methods

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