Target Outcome

Coefficients of a desired constitutive model fitting tissue stress-strain response

Prerequisites

Infrastructure

Python. Python is a programming language (GPL compatible license, http://www.python.org/). Python is the default scripting environment for Open Knee(s); for more details, please refer to Infrastructure/ScriptingEnvironment.
SciPy. SciPy is a Python based open-source software for mathematics, science, and engineering (BSD license, see http://www.scipy.org/).
Spyder. Spyder is an interactive development environment for Python with advanced editing, interactive testing, debugging and introspection features (MIT license, see http://code.google.com/p/spyderlib/).
npTDMS. npTDMS is Cross-platform, NumPy based module for reading TDMS files produced by LabVIEW. TDMS files are the binary files used for the robotic testing raw data. (LGPL license, see https://pypi.python.org/pypi/npTDMS/).

Previous Protocols

For more details, see Specifications/ExperimentationTissueMechanics.

Protocols

Input

Sample tissue geometric properties; width, height, thickness OR diameter, thickness
Sample tissue time-displacement, time-force profiles for multistep stress-relaxation tests
Sample tissue image data (with time stamp) (to reconstruct local tissue strains)

Procedures

-- aerdemir 2014-02-04 11:49:21 This section may list general purpose procedures and alternatives to utilize the same input to reach the same output. Procedures optimized for specific tissues should also be provided in here.

Output

Fit to tissue-specific stress-strain data for a desired constitutive relationship
- Constitutive relationship formulation
- Numerical values of coefficients of the constitutive relationship
- Fit error representing the quality of tissue-specific representation of material properties