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Creator |
c3baa1aae2495d9fcf383c433b46bfe0 |
43165 |
Creator |
ext-cb4a5b518ff1c5b61c6288dfb7e99fcc |
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Creator |
ext-f0b8cb3d68eb79ec022a5e40e9fb308b |
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Date |
2013-06-21 |
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Is Part Of |
repository |
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Is Part Of |
p1744683X |
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abstract |
An analysis of a novel indentation model has been implemented to obtain master curves
describing the optimal experimental parameters necessary to achieve the highest possible
accuracy in the determination of viscoelastic properties of soft materials. The indentation
model is a rigid indenter driven by a compliant measurement system, such as an atomic
force microscope or optical tweezers, into a viscoelastic half space. The viscoelastic
material is described as a multiple relaxation Prony series. The results have been
extended via an application of a viscoelastic equivalence principle to other physical
models such as poroelasticity. Optimisation of the indentation parameters has been
conducted over many orders of magnitude of the velocity, viscoelastic moduli, spring
stiffness, relaxation times and the duration of indentation resulting in a characteristic
master curve. It is shown that using sub-optimal conditions gives the appearance of
a more elastic material than is actually the case. For a two term Prony series the
ideal ramp duration was found to be approximately one eighth of the relaxation. Also
the ideal ramp duration for a three term Prony series was determined and shown to
guarantee distinct relaxation times under specific conditions. |
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authorList |
authors |
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issue |
23 |
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status |
peerReviewed |
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uri |
http://data.open.ac.uk/oro/document/332719 |
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uri |
http://data.open.ac.uk/oro/document/332733 |
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uri |
http://data.open.ac.uk/oro/document/332734 |
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uri |
http://data.open.ac.uk/oro/document/332735 |
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uri |
http://data.open.ac.uk/oro/document/332736 |
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uri |
http://data.open.ac.uk/oro/document/332758 |
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uri |
http://data.open.ac.uk/oro/document/334769 |
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volume |
9 |
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type |
AcademicArticle |
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type |
Article |
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label |
Andrews, James W.; Bowen, James and Cheneler, David (2013). Optimised determination
of viscoelastic properties using compliant measurement systems. Soft Matter, 9(23)
pp. 5581–5593. |
43165 |
label |
Andrews, James W.; Bowen, James and Cheneler, David (2013). Optimised determination
of viscoelastic properties using compliant measurement systems. Soft Matter, 9(23)
pp. 5581–5593. |
43165 |
Title |
Optimised determination of viscoelastic properties using compliant measurement systems |
43165 |
in dataset |
oro |