Transcript 3-Point Bending Device to Measure Transmural Strains for

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
▫ Next Semester
• Microsoft Project
• Hang-ups
• Questions
Purpose of the Project
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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
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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
Accomplished Work
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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
This Week
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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
Next Week
• Weekly meetings
• LabVIEW, LabVIEW, LabVIEW
▫ Begin constructing VI’s
 Acquire images from camera
 Determine
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Transmural strain
Flexure rigidity
Bending stiffness
Transverse shear stiffness
• SolidWorks
▫ Rail system
▫ Cart
▫ Bending bars
• Order bending bars
Next Month/End of Semester
• Finish ordering all components
• Finish LabVIEW programming
▫ Consolidating all VI’s
▫ Debugging
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
Potential Hang-ups
• LabVIEW programming difficulty
• Finishing with publishable results by March
• Making the device “user-friendly”
Questions?