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In situ tensile testing of human aortas by time-resolved small-angle X-ray scattering
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2005 (English)In: Journal of Synchrotron Radiation, ISSN 0909-0495, E-ISSN 1600-5775, Vol. 12, 727-733 p.Article in journal (Refereed) Published
Abstract [en]

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.

Place, publisher, year, edition, pages
2005. Vol. 12, 727-733 p.
Keyword [en]
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
URN: urn:nbn:se:kth:diva-15124ISI: 000232619300006OAI: diva2:333165
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

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Holzapfel, Gerhard A.
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