Abstract
Stress-strain curves are commonly generated to analyze the mechanical tensile behavior of biological materials. In soft tissue, several key material properties can be calculated from these curves, including ultimate tensile strength (UTS), yield strength, energy to failure, and the transition point. The transition point is at the intersection of the toe region and the linear region, which physically represents the point where the crimped collagen fibers are collectively straightened. The transition point defines a safe strain range below the threshold of microtears, and is explicitly included in some constitutive equations used to model soft tissue. Despite its importance, there is no standard method to find the transition point. While a variety of methods have been used, no study has reported the accuracy or robustness of their method. Furthermore, there are currently no software tools available to automate the calculation of the transition point, or other material properties of interest. This lack of standardization makes it difficult to compare results across studies and is time inefficient, as each research group has to create their own method. A need therefore exists to develop a standard, fast, and accurate method to calculate the transition point and other tensile mechanical properties in soft fibrous tissue.
Objective. The objectives of this study are to 1) develop a user-friendly program that automates the calculation of mechanical properties from stress-strain curves, and 2) identify the optimal settings to minimize error when calculating the transition point by using synthetic and experimental data.
Original language | American English |
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State | Published - 16 Jun 2021 |
Event | Summer Biomechanics, Bioengineering, and Biotransport Conference - Virtual Duration: 16 Jun 2021 → … |
Conference
Conference | Summer Biomechanics, Bioengineering, and Biotransport Conference |
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Period | 16/06/21 → … |
EGS Disciplines
- Biomedical Engineering and Bioengineering
- Mechanical Engineering