1. 3-Point Bending Device to Measure Transmural Strains for Multilayer Soft Tissue Composite Team 6 Jen Olson Sarah Rivest Brian Schmidtberg Sponsor: Dr. Wei Sun

2. Overview of Presentation Review of Project Accomplished Work Future Work ▫Current Week ▫Current Month/End of Semester ▫Next Semester Microsoft Project Hang-ups Questions

3. Purpose of the Project Design and construct a three-point bending device capable of flexural testing of soft tissues Capable of calculating the flexure rigidity, bending stiffness, transmural strain, transverse shear stiffness Capable of tracking the tissue deformation through use of a CCD camera and tissue markers Principle Goals: Measure the stress-strain response in the low-strain region by evaluating the instantaneous effective modulus Identify the location of the neutral axis Provide a suitable environment for testing Human body temperature and pH Will produce repeatable results

4. Accomplished Work Weekly meetings with client (Tuesdays 9:50 AM) Weekly team meetings (Wednesdays) Researched previous designs Researched materials and equipment Understanding of previous senior design ▫LabVIEW ▫MATLAB

5. This Week Weekly meetings Downloading camera software and testing camera SolidWorks for inner and outer bath Dimensions and ordering of tubing for temperature regulator Schedule meetings ▫Dave Kupputa  Creating a Virtual Machine ▫Machine Shop  Railing and cart design

6. Next Week Weekly meetings LabVIEW, LabVIEW, LabVIEW ▫Begin constructing VI’s  Acquire images from camera  Determine  Transmural strain  Flexure rigidity  Bending stiffness  Transverse shear stiffness SolidWorks ▫Rail system ▫Cart ▫Bending bars Order bending bars

7. Next Month/End of Semester Finish ordering all components Finish LabVIEW programming ▫Consolidating all VI’s ▫Debugging

8. Spring Semester Continue with weekly meetings Machine device Connect entire device by March ▫Write/submit article on project to NEBEC Debugging entire device Allow amply time to test multiple samples Writing user’s manual

9. Potential Hang-ups LabVIEW programming difficulty Finishing with publishable results by March Making the device “user-friendly”

10. Questions?