Identification of deformation mechanisms in biomaterials through AFM and digital image correlation

Horacio Dante Espinosa*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Most biological composite materials achieve higher toughness without sacrificing stiffness and strength. Interrogating how Nature employs these strategies and decoding the structure-function relationship of these materials is a challenging task that requires knowledge about the actual loading and environmental conditions of the material in their natural habitat, as well as a complete characterization of their constituents and hierarchical ultrastructure. In this work, we present an experimental framework that combines in situ and ex situ fracture testing with digital image correlation to allow the identification and quantification of toughening mechanisms involved during fracture of natural systems. We present this methodology in two case studies: (1) pangolin scales, and (2) nacre from seashells. We envision that the outcome of this research will pave the way for more bio-inspired design systems that can subsequently shed light on how Nature has evolved materials to optimize mechanical properties.

Original languageEnglish (US)
Title of host publicationAdvancement of Optical Methods and DigitalImage Correlation in Experimental Mechanics - Proceedings of the 2018 Annual Conference on Experimentaland Applied Mechanics
EditorsCesar Sciammarella, Michael A. Sutton, Ming-Tzer Lin, Cosme Furlong, Luciano Lamberti, Phillip L. Reu
PublisherSpringer New York LLC
Pages89-93
Number of pages5
ISBN (Print)9783319974804
DOIs
StatePublished - Jan 1 2019
EventSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2018 - Greenville, United States
Duration: Jun 4 2018Jun 7 2018

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume12
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Conference

ConferenceSEM Annual Conference and Exposition on Experimental and Applied Mechanics, 2018
CountryUnited States
CityGreenville
Period6/4/186/7/18

Keywords

  • Atomic force microscope
  • Bioinspired materials
  • Biomaterials
  • Digital image correlation
  • Nacre
  • Pangolin

ASJC Scopus subject areas

  • Engineering(all)
  • Computational Mechanics
  • Mechanical Engineering

Fingerprint Dive into the research topics of 'Identification of deformation mechanisms in biomaterials through AFM and digital image correlation'. Together they form a unique fingerprint.

  • Cite this

    Espinosa, H. D. (2019). Identification of deformation mechanisms in biomaterials through AFM and digital image correlation. In C. Sciammarella, M. A. Sutton, M-T. Lin, C. Furlong, L. Lamberti, & P. L. Reu (Eds.), Advancement of Optical Methods and DigitalImage Correlation in Experimental Mechanics - Proceedings of the 2018 Annual Conference on Experimentaland Applied Mechanics (pp. 89-93). (Conference Proceedings of the Society for Experimental Mechanics Series; Vol. 12). Springer New York LLC. https://doi.org/10.1007/978-3-319-97481-1_12