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3-Point Bending Device to Measure Transmural Strains for Multilayer Soft Tissue Composite

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. Overview of Presentation . Review of Project Accomplished Work Future Work Current Week Current Month/End of Semester

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3-Point Bending Device to Measure Transmural Strains for Multilayer Soft Tissue Composite

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  1. 3-Point Bending Device to Measure Transmural Strains forMultilayer 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?

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