Redesign of the Hydrostatic Force and
Center of pressure Experiment
Sponsor: Dr. Siva Krishnan
ME 462 Capstone Design -- Fall 2009
Advisor: Dr. Hazim El-Mounayri
Group Members: Hesam Nouri
Gerhard Novianto
Rahul Patel
Juan Tapia
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1
Experiment
 Lab’s objective
 Measuring Hydrostatic Force
 Calculate Center of Pressure
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2
Customer Requirements
 Increased ergonomics in terms of operation
 Improved repeatability
 Minimum experimental error and operational time
 Possible safety issues are to be addressed as well.
 Instructional Video Manual
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3
Vision, Critical Success Factors, and Strategy
Vision:
 Run the experiment and calculate the results.
 Identify the most effective parameters.
 Find optimum solution for those parameters.
 Build a virtual prototype and analysis using Ansys.
 Manufacture the parts and assemble it.
 Rerun the experiments to validate it.
 Budget < $500
Critical Success Factors:
 Communication
 Team Management
 Planning
 Clear Goal
Strategy:
 Keep in touch with the Customer
 Weekly Group Meetings
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4
Engineering Deliverable Items
Quantity
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Description of Deliverable
Exit Criteria
1
Redesigned units of this experiment
Delivered
1
Instructional Video Manual
Delivered
5
Technical Approach

Customer’s Key Technical Requirements
 Decrease the percent error

Key Technical Issues
 Hard to balance the tank
 Takes 2 hour performance the lab
 Safety issue in emptying the tank

Key Features and Benefits
 Efficient way to measure height
 Hanger Extension for balancing
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Engineering Schedule
9/7/2009
9/17/2009
9/27/2009
10/7/2009
10/17/2009 10/27/2009
11/6/2009
11/16/2009
11/26/2009
Obtain Customers' Requirement
Create Development Plant
Generate Specifications
Function Decomposition
Function - Concept Mapping
Generate Design Concept Draft
Evaluate Design Concept Draft
Engineering Drawing
Analysis of Engineering Drawing
Re Evaluation of concept draft
Finalize Bill of Material
Manufacture Process
Assembly Process
Product Evaluation (Test)
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7
House of Quality
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Function Decomposition
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Function Concept Mapping
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Overall Concept 1
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Overall Concept 2
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Decision Matrix
Importance
Dr.Krishnan
Lab TA
Students
Concept 2
26
28
5
+1
+1
10
23
26
+1
+1
Attractive looks
2
1
20
S
+1
Ease to Maintenance
21
20
0
S
6
4
30
+1
5
5
19
S
S
5
19
0
S
S
25
0
0
S
S
Experimental result's accuracy
Minimum operational time
Ergonomics/ Easy to operate
Able to use simultaneously
Durable equipment
Cost
Total +
Total –
Overall
3
Current
DATUM
Customer Requirements
Concept 1
S
-1
-
3
1
-
1
2
-
2
42
-
32
55
-
48
61
-
21
Weighted (Dr Krishnan)
Weighted (Lab TA)
Weighted (Students)
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Final Concept
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Final Design in Pro-Engineering
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Generated Mesh
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Safety Margin
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Maximum Shear Stress
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Bill of Material
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Results Summary
Operational time of 30-45 minutes for new redesign with minimum effort
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Lessons Learned
Positive Items:
 Awareness of the dynamics of working in a team.
 Experience of exchanging ideas and inspiring others to work together.
 Demonstrating professional behaviors such as taking responsibility, showing
up on time and meeting deadlines.
 Learning from and helping one’s peers.
Future Improvement:
 Water speed controller can be installed on the elbow(bottom part)
Different kind of glue for more attractive looks
Better awareness of the responsibilities and duties pertaining to industry roles.
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Questions
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22