Acta Biomaterialia 71 (2018) 388–397 Contents lists available at ScienceDirect Acta Biomaterialia journal homepage: www.elsevier.com/locate/actabiomat Full length article Characterizing viscoelastic mechanical properties of highly compliant polymers and biological tissues using impact indentation a,1 b,1 c b,d,⇑ Aleksandar S. Mijailovic , Bo Qing , Daniel Fortunato , Krystyn J. Van Vliet Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA Department of Biological Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA John A. Paulson School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139, USA ar ti c l e i nf o ab stra ct Article history: Precise and accurate measurement of viscoelastic mechanical properties becomes increasingly challeng- Received 30 September 2017 ing as sample stiffness decreases to elastic moduli <1 kPa, largely due to difﬁculties detecting initial con- Received in revised form 19 January 2018 tact with the compliant sample surface. This limitation is particularly relevant to characterization of Accepted 15 February 2018 biological soft tissues and compliant gels. Here, we employ impact indentation which, in contrast to shear Available online 1 March 2018 rheology and conventional indentation, does
Acta Biomaterialia – Elsevier
Published: Apr 15, 2018
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