The nonlinear relationship between speed of sound and compression in articular cartilage: Measurements and modeling.

Autor: Mansour JM; Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH, USA., Motavalli M; Case Center for Multimodal Evaluation of Engineered Cartilage, Case Western Reserve University, Cleveland, OH, USA.; Department of Biology, Case Western Reserve University, Cleveland, OH, USA., Bensusan J; Department of Mechanical and Aerospace Engineering, Case Western Reserve University, Cleveland, OH, USA., Li M; Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA.; Current Address: Division of Biostatistics, Department of Preventive Medicine, USC Biostatistics Core, USC Norris Comprehensive Cancer Center, University of Southern California, Los Angeles, CA, USA., Margevicius S; Department of Population and Quantitative Health Sciences, Case Western Reserve University, Cleveland, OH, USA., Welter JF; Case Center for Multimodal Evaluation of Engineered Cartilage, Case Western Reserve University, Cleveland, OH, USA.; Department of Biology, Case Western Reserve University, Cleveland, OH, USA.
Jazyk: angličtina
Zdroj: Journal of the mechanical behavior of biomedical materials [J Mech Behav Biomed Mater] 2020 Oct; Vol. 110. Date of Electronic Publication: 2020 Jun 19.
DOI: 10.1016/j.jmbbm.2020.103923
Abstrakt: We measured speed of sound in bovine articular cartilage as a function of compressive strain. Using techniques we developed, it was possible to apply strain starting from the unstrained, full height of a sample. Our measurements showed that speed of sound was not a monotonic function of strain as reported in earlier investigations. Speed increased with increasing strain over a range of lower strains. It reached a maximum, and then decreased as the strain increased further. These results were corroborated using a model of wave propagation in deformable porous materials. Using this model, we also established conditions under which a maximum in the speed would exist for samples in compression. Our measurements and analysis resolve the conflicting results reported in previous studies.
Databáze: MEDLINE