Paper Number
GR21
Session
Gallery of Rheology Contest
Title
Mechanical contour mapping of human blood
Presentation Date and Time
October 17, 2018 (Wednesday) 6:30
Track / Room
Gallery of Rheology / Woodway Foyer
Authors
- Helton, Tyler (USUHS, Medical School)
- Armstrong, Matthew J. (United States Military Academy, Chemistry and Life Science)
- Horner, Jeffrey S. (University of Delaware, Chemical and Biomolecular Engineering)
Author and Affiliation Lines
Tyler Helton1, Matthew J. Armstrong2, and Jeffrey S. Horner3
1Medical School, USUHS, Bethesda, MD 20814; 2Chemistry and Life Science, United States Military Academy, West Point, NY 10996; 3Chemical and Biomolecular Engineering, University of Delaware, Newark, DE
Speaker / Presenter
Helton, Tyler
Text of Abstract
Human blood is an excellent example of a shear-thinning, thixo-elasto-visco-plastic material. An underdeveloped area of study is analyzing mechanical properties of blood for use in clinical diagnoses, particularly in analysis of transient data. There is a possibility that blood could be classified using its own unique transient mechanical signature, and with the addition of large quantities of data could be used as a method of diagnoses and/or differentiation. In this work, the use of a transient shear flow experiment called a triangle ramp experiment is utilized as a method of producing a mechanical contour mapping of blood. Hysteresis tests alleviate some of the nonlinear difficulties exhibited by LAOS. Rather than using the traditional discrete Fourier transform to analyze the data, a recent method, called Series of Physical Processes (SPP), is applied to the hysteresis curves1,2. SPP allows the visualization of the evolving viscous and elastic nature of the material, with the understanding the microstructure or thixotropic nature of the blood can contribute to both via stretching, and adding to the resistance to flow.