Mechanical characterisation of hydrophobic and hydrophilic acrylates used in intraocular lenses through depth sensing indentation

In this work, the mechanical behaviour of hydrophilic and hydrophobic acrylates has been characterised by depth sensing indentation. Time-dependent behaviour has been studied using load-relaxation tests. Experiments have been simulated with a finite element software using a visco-hyperelastic materi...

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Bibliographic Details
Published in:Journal of the mechanical behavior of biomedical materials 2022-02, Vol.126, p.104997-104997, Article 104997
Main Authors: Cabeza-Gil, I., Calvo, B., Rico, A., Reinhards-Hervás, C., Rodríguez, J.
Format: Article
Language:English
Subjects:
Acrylates
Cataract surgery
Depth sensing indentation
Hydrophobic and Hydrophilic Interactions
Intraocular lenses
Lenses, Intraocular
Visco-hyperelasticity
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Summary:In this work, the mechanical behaviour of hydrophilic and hydrophobic acrylates has been characterised by depth sensing indentation. Time-dependent behaviour has been studied using load-relaxation tests. Experiments have been simulated with a finite element software using a visco-hyperelastic material model. The parameters of this model have been determined using deep learning techniques. The developed material models have been used to mechanically simulate a standard compression test of a prototype intraocular lens. [Display omitted] •A visco-hyperelastic model has been developed that successfully reproduces load relaxation tests of materials for intraocular lenses.•Material model parameters have been determined using an optimization strategy based on neural networks.•The visco-hyperelastic model has been used later in the study of intraocular lenses behaviour.
ISSN:1751-6161
1878-0180
DOI:10.1016/j.jmbbm.2021.104997