Mineralized tissue of shark vertebral centra studied with microCT under in situ load

Stuart R. Stock*, Jason T. Parker, Michelle S. Passerotti, Lisa J. Natanson, Dilworth Y. Parkinson

*Corresponding author for this work

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

1 Scopus citations

Abstract

Shark vertebral bodies (centra) possess remarkable resistance to millions of cycles of large in vivo strains exceeding 4-8%. These strains are enormous for a mineralized tissue, and it appears that the centra evolved to achieve this performance through a hierarchy of structures spanning dimensions from centimeters to nanometers. At the 1 µm scale, blocks cut from centra and imaged with synchrotron microCT demonstrate that the centra tissue consists of closely spaced, mineralized trabeculae. An outstanding question is: How do these trabeculae deform to accommodate these large strains. This paper presents recently obtained synchrotron microCT results on in situ loading of blocks of shark centra and examines the deformation modes of the interconnected array of trabeculae.

Original languageEnglish (US)
Title of host publicationDevelopments in X-Ray Tomography XV
EditorsBert Muller, Ge Wang
PublisherSPIE
ISBN (Electronic)9781510679641
DOIs
StatePublished - 2024
Event15th SPIE Conference on Developments in X-Ray Tomography - San Diego, United States
Duration: Aug 19 2024Aug 22 2024

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume13152
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference15th SPIE Conference on Developments in X-Ray Tomography
Country/TerritoryUnited States
CitySan Diego
Period8/19/248/22/24

Funding

This research used resources of the Advanced Light Source, which is a DOE Office of Science User Facility under contract no. DE-AC02-05CH11231.

Keywords

  • in situ loading
  • microCT
  • mineralized cartilage
  • shark
  • synchrotron x-radiation
  • vertebrae

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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