Transcript interim_design_review.ppt

Interim Design Review
Outline
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Review of project
Define Product Failure
Measuring the Surface
Failure detection vs. Failure prevention
Possible machines
Testing procedure
Future for us
The Hydraulic Lash Adjuster (Revisited)
Courtesy of Indonesian Mitsubishi Owner’s Club
http://www.idmoc.com/Images/News/hla1.gif
Plunger seat
Highlighted
Technical Specifications
• Acceptable flow rate: Unknown
• Surface Clearance: < 0.000035 in.
• Surface quality: Free from defects
detrimental to the function of the
component when assembled and tested
• Radius of Plunger seat polish: 0.006”
Unpolished seat
Polished Seat
Notes about seat images
• Seat is a 3D surface, not flat
• Grooves being ground into seat during
polishing process
• Solution will be a mirror finish or crosshatched grooves
Acceptable Flow Limits
• Original Leak down test
• Low flow master
• High Flow Master
http://www.sciencegl.com/Forensic_comparator/image_comparator.htm
How to measure the surface
DYMEK - Veeco (Wyko) Optical Profiler
Ebay item: 320102008057
Price: $24,500.00
UBM – AutoScan
Automated Surface
Profiler
This Semester
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Which testing device will be used
Develop theory of what causes grooves
Which of the 8 elements will be tested
Test plan for the Spring
Research materials for testing
Questions?
• http://www.eng.fsu.edu/~willibe/gt10