1. |
- Schmid, F., et al.
(författare)
-
In situ tensile testing of human aortas by time-resolved small-angle X-ray scattering
- 2005
-
Ingår i: Journal of Synchrotron Radiation. - 0909-0495 .- 1600-5775. ; 12, s. 727-733
-
Tidskriftsartikel (refereegranskat)abstract
- 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.
|
|