Key result
Needle-based clamps improve biaxial material stress accuracy over noodle clamps in biomechanical testing.
Why the study?
There is no clear understanding of the influence biaxial test set-up conditions may have on computing material stress from experimental results in cardiovascular tissues.
Population
Ascending aorta and pulmonary artery tissue samples
Comparison
System with noodle clamps vs clamped system with needles leaving edges free to expand laterally
Design
Finite element method (FEM) simulation study
Authors
Loading...
Needle clamps may refine biaxial stress accuracy in animal arteries; leaves open translation to human tissue models.
Using a clamped system with needles that allows lateral expansion improves the accuracy of stress estimation in biaxial testing of anisotropic biological tissues.
Cilla et al. (2019) studied Cardiovascular tissue biomechanics. Clamped system with needles leaving specimen's edges free to expand laterally vs. System with noodle clamps was evaluated on Accuracy of calculated material stress from measured force. The clamped system with needles allowing free lateral movement produced stresses closer to the universally accepted formulation of biaxial material stress compared to noodle clamps.
Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context: