1. Interim Design Review

2. Outline Review of project Define Product Failure Measuring the Surface
Failure detection vs. Failure prevention
Possible machines
Testing procedure
Future for us

3. The Hydraulic Lash Adjuster (Revisited)
Courtesy of Indonesian Mitsubishi Owner’s Club

4. Plunger seat
Highlighted

5. Technical Specifications
Acceptable flow rate: Unknown
Surface Clearance: < in.
Surface quality: Free from defects detrimental to the function of the component when assembled and tested
Radius of Plunger seat polish: 0.006”

6. Unpolished seat
Polished Seat

7. 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 cross-hatched grooves

8. Acceptable Flow Limits
Original Leak down test
Low flow master
High Flow Master

10. How to measure the surface
DYMEK - Veeco (Wyko) - Optical Profiler
Ebay item:
Price: $24,500.00
UBM – AutoScan
Automated Surface Profiler

11. This Semester 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

12. Questions?