corrosion test stand concepts review - auburn universitydbeale/mech4240-50/reports/... · • easy...
TRANSCRIPT
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Corrosion Test StandCorrosion Test Stand
Concepts ReviewConcepts Review
October 14, 2008October 14, 2008
Vance Beatty
Rob Goodwin
Jacob Mattox
Scott Mayo
Alan Peters
Jackson Wilson
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Agenda
• Introduction
• Project Requirements
• “Easel” Concept Proposal
– Questions– Questions
• “Bed Frame” Concept Proposal
– Questions
• “Tent” Concept Proposal
– Questions
• Evaluation of Concepts
• Conclusion & Recommendation
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Requirements
• Lightweight (< 70 lbs.)
• Easy assembly & disassembly (< 1 hour with 2 people)
• Coupons insulated from rack
• Coupons held at 45° angle
• Corrosion resistant• Corrosion resistant
• Withstand specified environmental effects
• Low cost (< $3,000)
• Holds 50 coupons (3”x5”x1/8”)
Mission: “To build a portable, corrosion resistant rack to hold 50 metal coupons at a 45° angle.”
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“Easel” ConceptPresented By:
Scott Mayo
Jackson Wilson
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“Easel” Support Assembly
• Simple Design
• Easy to Assemble
• Low Weight
• Structure:• Structure:– Square Tubing
– Channel Bars
– Angle Bars
– Hinges
– Nuts and Bolts
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“Easel” Coupon Retainer
• Coupons slide into edges of board
• Board placed into metal framemetal frame
• Metal frame attached to hinges
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“Easel” Range of Motion
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“Easel” Angle Lock
• Wing nuts can lock frame at different angles
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“Easel” Grounding
• 4 holes per leg stand
• Can be • Can be bolted, tied, or staked to ground
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“Easel” Cost EstimateItem
Steel Item
Cost Aluminum Item Cost # Steel Total Cost
Aluminum Total
Cost
Fiberglass Channel Coupon Inserts n/a n/a 10 $130.00 $130.00
Square Tubing (1.25 X 1.25 X 48 in.) $15.00 $18.00 1 $15.00 $18.00
U-Channel Tubing (1.25 X 1.25 X 48 in.) $27.00 $18.00 2 $54.00 $36.00
Angle Iron Tubing (1.25 X 1.25 X 48 in.) $9.00 $11.00 4 $36.00 $44.00
Angle Iron Tubing (2 X 2 X 48 in.) $11.00 $21.00 2 $22.00 $42.00
Plate Metal (angle lock) $26.00 $36.00 2 $52.00 $72.00
Sheet Metal (support coupon frame) $7.00 $8.00 1 $7.00 $8.00
Hinges $5.00 $5.00 3 $15.00 $15.00
Nuts and Bolts pack of 25 (0.25 in. - 20) $9.00 $9.00 1 $9.00 $9.00
Totals $340.00 $374.00
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“Easel” Benefit Analysis
• Pros:
– Simple design
– Lightweight (30 lbs. w/out coupons)
• Cons:
– May collect standing water
– Difficult to remove & w/out coupons)
– Corrosion resistant
– Easy to assemble & manufacture frame
– Inexpensive
– Durable
– Difficult to remove & replace coupons
– Difficult to manufacture coupon board
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Questions?
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“Bed Frame” ConceptPresented By:
Rob Goodwin
Alan Peters
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“Bed Frame” Support Assembly
• Aluminum 6061 frame
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“Bed Frame” Coupon Rack
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“Bed Frame” Coupon Retainer
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“Bed Frame” Assembly
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“Bed Frame” Cost EstimateItem # Part Description # Required Price Each Total Price
1 Polycarbonate Square Stock 1"x1" 50 $0.10 $5.00
2 Polycarbonate Sheet 48"x96"x.25" 2 $186.00 $372.00
31/4"-20 UNC x 3-1/2" LG.- Fully Threaded
Rod - 18-8 Stainless Steel50 $0.82 $41.20
4 1/4"-20 UNC - Hex Nut 18-8 Stainless Steel 66 $0.44 $28.93
5 1/4" - 18-8 Stainless Steel - Flat Washer 66 $0.18 $12.17
61/4"-20 UNC - Threaded Hole -
Polypropylene Knob50 $0.71 $35.50
71-1/2" x 1-1/2"x1/4" (4' LG.) - Aluminum
Angle 6061-T6 - Aluminum Structural Angle8 $20.24 $161.92
8 1/4"x1-1/2" (4' LG.) - 6061 Aluminum - Flat 4 $13.20 $52.80
91/4"-20 UNC (1" LG.) - Standard Hex Bolt -
18-8 Stainless Steel36 $0.26 $9.41
"1/4" - 18-8 Stainless Steel - Spring Lock
Washer - Heavy Duty16 $0.19 $3.09
Total Cost $722.03
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“Bed Frame” Benefit Analysis
• Pros:– Simple design
– Lightweight
– Individual coupon
• Cons:
– Shadow effect
– Coupons fixed at 45°– Individual coupon
access
– No mechanical moving parts
– Easy to assemble & manufacture frame
– Shadow effect
45°
– Bulky
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Questions?
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“Tent” ConceptPresented By:
Vance Beatty
Jacob Mattox
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“Tent” Coupon Retainer
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“Tent” Coupon Positioning
• Venetian blinds style of movementmovement
• 180° of rotation
• Lever controlled
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“Tent” Grounding
• 2 holes per leg stand
• Can be • Can be bolted, tied, or staked to ground
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“Tent” Assembly/Disassembly
• Removable legs
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“Tent” Assembly/Disassembly
• Foldable structure
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“Tent” Cost Estimate
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“Tent” Benefit Analysis
• Pros:
– Adjustable coupon angles
– Easy to assemble
• Cons:
– Use of special machinery required for manufacturing– Easy to assemble
– Portable
– Inexpensive
– Lightweight
– Wind / Weather resistant
for manufacturing
– Time intensive installation of coupons
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Questions?
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Decision Matrix
Concepts
Criteria Importance Tent Bed-Frame Easel
Light Weight 19 0.75 0.75 0.90
Easily Assembled 11 0.80 0.50 0.95
Coupons Insulated 19 0.95 0.90 0.50
Coupons at 45° Angle 15 0.99 0.90 0.95Coupons at 45° Angle 15 0.99 0.90 0.95
Hold 50 Coupons 16 0.99 0.99 0.99
Easy to Maintain 8 0.80 0.80 0.80
Cost Less than $3000 12 0.90 0.85 0.95
Satisfaction 88.99 82.79 84.94
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Gantt Chart
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Future Development
• Detailed CAD Drawings
• Engineering Calculations
– Structural Analysis
– FEA– FEA
• Manufacturability Assessment
• Material Selection
• Cost Analysis
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Recommendation
• Incorporate key aspects of all concepts
– Frame of “Tent” concept
– Coupon retainer of “Bed Frame” concept
– Angle lock mechanism of “Easel” concept– Angle lock mechanism of “Easel” concept
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Summary
• Introduction
• Project Requirements
• “Easel” Concept Proposal
– Questions– Questions
• “Bed Frame” Concept Proposal
– Questions
• “Tent” Concept Proposal
– Questions
• Concepts Evaluation
• Conclusion & Recommendation
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Questions?