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In situ tensile testing of human aortas by time-resolved small-angle X-ray scattering
- Schmid, F. (author)
- Sommer, G. (author)
- Rappolt, M. (author)
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- Schulze-Bauer, C. A. J. (author)
- Regitnig, P. (author)
- Holzapfel, Gerhard A. (author)
- Laggner, P. (author)
- Amenitsch, H. (author)
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- 2005
- 2005
- English.
- In: Journal of Synchrotron Radiation. - 0909-0495 .- 1600-5775. ; 12, s. 727-733
- Journal article (peer-reviewed)
Abstract
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- The collagen diffraction patterns of human aortas under uniaxial tensile test conditions have been investigated by synchrotron small- angle X- ray scattering. Using a recently designed tensile testing device the orientation and d- spacing of the collagen fibers in the adventitial layer have been measured in situ with the macroscopic force and sample stretching under physiological conditions. The results show a direct relation between the orientation and extension of the collagen fibers on the nanoscopic level and the macroscopic stress and strain. This is attributed first to a straightening, second to a reorientation of the collagen fibers, and third to an uptake of the increasing loads by the collagen fibers.
Keyword
- human tissue
- biomechanics
- artery
- small-angle X-ray scattering
- collagen
- fiber diffraction
- tensile testing
- human brain arteries
- polarized-light microscopy
- collagen organization
- mechanical-properties
- tendon collagen
- synchrotron-radiation
- distending pressure
- fibrillar structure
- orientation
- diffraction
Publication and Content Type
- ref (subject category)
- art (subject category)
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- Schmid, F.
- Sommer, G.
- Rappolt, M.
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- Holzapfel, Gerha ...
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- Laggner, P.
- Amenitsch, H.
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- Royal Institute of Technology
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