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Progress Report

Progress Report. What we’ve done so far…. A fluid dynamics model to calculate leakage A method to set pass/fail limits for roughness A Quality Control machine to recommend A sales representative contact at Dymek A test plan Polishing materials ordered.

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Progress Report

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  1. Progress Report

  2. What we’ve done so far… • A fluid dynamics model to calculate leakage • A method to set pass/fail limits for roughness • A Quality Control machine to recommend • A sales representative contact at Dymek • A test plan • Polishing materials ordered http://www.veeco.com/products/Metrology_and_Instrumentation/Optical_Profilers/Wyko_NT9300/

  3. Test plan • Speed, Time, Pressure, and Direction tests will be conducted with Course Grit Ruby stone

  4. After testing • Measuring Roughness and Roundness at the NHMFL. • Set parameters and tolerances for the surface profiler. • Incorporate a fluid dynamic model for roundness measurements.

  5. Roughness and Roundness http://www.taylor-hobson.com/faqrounddetail.php?faqid=44

  6. Fluid Dynamic Models • Capillary Seal • Models flow around two concentric cylinders. • Perfect model for the measurements of flow between the plunger and plunger body.

  7. Fluid Dynamic Models • Spherical Step Bearing • Measures thin film flow around a spherical check valve • Used to measure the flow rate between the check ball and the plunger.

  8. Spring Tasks

  9. What we still need • Carry out polishing tests at GT Tech and machine shop • Analyze samples at NHMFL • Fluid dynamic model for roundness • Combined model that calculates leakage given roughness and roundness

  10. Last minute ideas • Change from stainless steel ball bearings to high temperature rubber Viton™ • Rubber will allow some deformation to form to the surface of the seat • Could potentially eliminate the need for polishing Image from www.smallpartsinc.com

  11. Website • http://www.eng.fsu.edu/~willibe/gt10 Questions???

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