subject predicate object context
43165 Creator c3baa1aae2495d9fcf383c433b46bfe0
43165 Creator ext-cb4a5b518ff1c5b61c6288dfb7e99fcc
43165 Creator ext-f0b8cb3d68eb79ec022a5e40e9fb308b
43165 Date 2013-06-21
43165 Is Part Of repository
43165 Is Part Of p1744683X
43165 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.
43165 authorList authors
43165 issue 23
43165 status peerReviewed
43165 uri http://data.open.ac.uk/oro/document/332719
43165 uri http://data.open.ac.uk/oro/document/332733
43165 uri http://data.open.ac.uk/oro/document/332734
43165 uri http://data.open.ac.uk/oro/document/332735
43165 uri http://data.open.ac.uk/oro/document/332736
43165 uri http://data.open.ac.uk/oro/document/332758
43165 uri http://data.open.ac.uk/oro/document/334769
43165 volume 9
43165 type AcademicArticle
43165 type Article
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 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