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Bidirectional tensile testing cell for in situ small angle X-ray scattering investigations of soft tissue
KTH, School of Engineering Sciences (SCI), Solid Mechanics (Dept.).
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2006 (English)In: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, ISSN 0168-583X, Vol. 246, no 1, 262-268 p.Article in journal (Refereed) Published
Abstract [en]

An X-ray cell for the acquisition of one-dimensional mechanical force-displacement diagrams of soft tissue samples has been developed. The combination of X-ray and mechanical data allows new insights into the coupling of the macroscopic behavior and nanoscopic structural changes during the application of load. Two linear mu-translation stages are used to symmetrically - i.e. bidirectionally - stretch the sample. A video-extensometer is installed to record geometrical changes of the sample during measurement which allows to determine true stresses and strains. The sample can be immersed in a liquid and heated. We demonstrate the advantages over common unidirectional tensile testing devices without length measurement systems by comparing different mechanical and diffraction data sets of human arterial tissue.

Place, publisher, year, edition, pages
2006. Vol. 246, no 1, 262-268 p.
Keyword [en]
tensile testing, X-ray cell, soft tissue, biomechanics, small angle X-ray diffraction, small angle X-ray scattering, SAXD, SAXS, artery, collagen, fibre diffraction, mechanical-properties, collagen orientation, connective tissues, fibers, model, wall
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-15620DOI: 10.1016/j.nimb.2005.12.057ISI: 000236950700048Scopus ID: 2-s2.0-33645864680OAI: oai:DiVA.org:kth-15620DiVA: diva2:333662
Note
QC 20100525 QC 20111004. Conference: Symposium on Synchrotron Radiation and Materials Science held at the 2005 Spring Meeting of the European-Materials-Research-Society. Strasbourg, FRANCE. MAY 31-JUN 03, 2005.Available from: 2010-08-05 Created: 2010-08-05 Last updated: 2011-10-04Bibliographically approved

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Sommer, GerhardHolzapfel, Gerhard A.
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Solid Mechanics (Dept.)
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  • apa
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