Aorta is assumed as a homogenous material in current finite element models, but in fact aorta is composed of three major layers: intima, media, and adventitia with different microstructural organizations that result in different material properties. Understanding the material properties of these layers is essential for studying the local mechanisms of deformation, force transmission, and failure in aorta. The material properties of aorta wall layers were determined from nano-indentation tests. The results show that the value of shear modulus generally increases from the inner wall toward the outer wall. Aorta material time dependency was independent from the radial orientation. This study explains why aorta rupture initiates near the inner wall and propagates toward the outer wall.
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ASME 2011 Summer Bioengineering Conference
June 22–25, 2011
Farmington, Pennsylvania, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-5458-7
PROCEEDINGS PAPER
Material Properties of Aorta From Nanoindentaion Tests Available to Purchase
Ali Hemmasizadeh,
Ali Hemmasizadeh
Temple University, Philadelphia, PA
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Cristina Parenti,
Cristina Parenti
Temple University, Philadelphia, PA
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Kurosh Darvish
Kurosh Darvish
Temple University, Philadelphia, PA
Search for other works by this author on:
Ali Hemmasizadeh
Temple University, Philadelphia, PA
Cristina Parenti
Temple University, Philadelphia, PA
Kurosh Darvish
Temple University, Philadelphia, PA
Paper No:
SBC2011-53920, pp. 809-810; 2 pages
Published Online:
July 17, 2013
Citation
Hemmasizadeh, A, Parenti, C, & Darvish, K. "Material Properties of Aorta From Nanoindentaion Tests." Proceedings of the ASME 2011 Summer Bioengineering Conference. ASME 2011 Summer Bioengineering Conference, Parts A and B. Farmington, Pennsylvania, USA. June 22–25, 2011. pp. 809-810. ASME. https://doi.org/10.1115/SBC2011-53920
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