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Presented by,Group # 3
Asmita Dubey 9796924Charanpreet Singh Heer 6420753
Dushyant Patel 6940595Gurpreet Bhatoa 1951645
Rajan Desai 1237225
Concurrent Engineering in Aerospace System(MECH6941)
Multipurpose Duster with Wetting Technology
Presented To,Dr. Ashok Kaushal
Project Overview• Introduction• Mission Statement• Market Analysis• Survey Interpretation• Establishing Target specifications• Preliminary Design
• Concept Generation• Concept Selection
• Final Design• Cost analysis of duster• Design for assembly• Payback analysis• Supply chain model• Review and Progress• Conclusion• Future growth
Introduction
• Dusters are well known for cleaning black and white boards
• Main end users are universities, collages, schools, coaching classes etc…
• Available in different models with different features.
• Price generally varies from $1- $ 5.Peelable Duster
Duster with marker holder
Duster with vacuum pump
Mission StatementLIGHT WEIGHT MULTIPURPOSE DUSTER WITH WETTING TECHNOLOGY
Product Description
Exchangeable wet cleaning pad, Chalk holder Marker holder Aesthetic in look Light weight
Key Business Goals
Serve effectively Initially to cover 40%-60% market First product introduction 1stQ 2013 Customer satisfaction
Primary Market
Universities Collages Schools
Secondary Market
Coaching classes Domestic Office departments (meetings) Distributors and resellers
Assumptions and Constraints
New exchangeable cleaning pad with wetting technology Environmental friendly
Stakeholders
End users (e.g. Professors, Teaching Assistant’s) Universities, Schools, Coaching Classes etc. Manufacturing operations
Market Analysis Online Survey Group Discussion One to one Interview
Survey InterpretationCustomer Need Statement Customer Need Interpretation
It’s plastic body strength Duster can be sturdy
If I were given a chance to change something in a duster, I would like to use a material so that it can work equally well for both white and black boards.
Duster can be used for both black and white board
Holding material Duster can be hold easilyThe dusters currently being used does not absorb chalk dusts; the dusts fly out in the air and sticks to hands. It causes breathing and cleanliness problems. So dusters should be able to grasp the dust it is designed for
Duster can absorb the dust
Price Duster can be affordable
Appearance Duster can maintain aesthetic lookSize will be pocket size, some wetting agent to not leave impression on board
Duster can be compact and clean properly
Color Duster is good looking
I would have put a handle on it. Duster can be hold easily and firmly
Provide a better cleaning besides spreading chalk Duster can clean properly
The cleaning efficiency Duster can clean properlyNot about duster. But I prefer to have a color chalk, it would be helpful specially when I want to draw diagram for student
Duster can hold the chalk
I would want a wet duster Duster can absorb the dust and clean properly
After cleaning the blackboards, it remains a bit whitish; it would be great if this whiteness can be removed
Duster can erase properly
Better grip durable Duster can be long lasting
Establishing Target specifications• List of MatricesMetrics No. Need Nos. Metric Imp. Units
1 1 Min. value from tension and compression strength test 3 Pa
2 2,9,11 Dust absorbing capacity of cleaning pad material 5 Lb.
3 3,6,9,11 Cleaning pad life cycle 2 Hrs.
4 4 Unit manufacturing cost 4 $
5 4 Import cost 3 $
6 8 Total weight 4 gm
7 6 Final dimensions 5 Mm
8 5,7 CAD Design tool used 3 list
9 2,9 Spring Tension 2 N
10 5,7 Aesthetic look 3 Subj.
11 8 Fine holding grip design 4 list
12 8 Type of material used 4 list
13 10 Number Chalk holding capacity 2 Numbers
14 10 Number of Markers holding capacity 2 Numbers
15 12 Duster life cycle 3 Hrs.
The needs-metrics matrix.
• Competitive Bench MarkingMetric
s No.
Need
Nos.
Metric Imp. Units Art line Peel-able Sure mark Acme
United
Lega master
1 1 Min. value from tension
and compression strength
test
2 Pa NA NA NA NA NA
2 2,9,11 Dust absorbing capacity of
cleaning pad material
5 Subj. 3 3 2 4 4
3 3,6,9, 11 Cleaning pad life cycle 2 Hrs. NDA NDA NDA NDA NDA
4 4 Unit manufacturing cost 4 $ 2.5 6.13 3 3.7 33
5 4 Import cost 3 $ NDA NDA NDA NDA NDA
6 8 Total weight 4 gm 190 217 210 180 277
7 6 Final dimensions 5 DxHxW mm 109×117×45 145 x 35 x 55 100 x 55 x 45 109×117×45 174 x 80 x 98
Metrics
No.
Need Nos. Metric Imp. Units Art line Peel-able Suremark Acme United Lega-
master
8 5,7 CAD Design tool used 3 list NDA NDA NDA NDA NDA
9 2,9 Spring Tension 2 N NA NA NA NA NA
10 5,7 Aesthetic look 3 Subj. 3 2 3 3 4
11 8 Fine holding grip design 4 Subj. 2 3 2 2 3
12 8 Type of material used 4 list Plastic Plastic Plastic Wood Plastic
13 10 Number Chalk holding
capacity
2 Numbers 0 0 0 0 0
14 10 Number of Markers
holding capacity
2 Numbers 0 1 0 0 4
15 12 Duster life cycle 3 Hrs NDA NDA NDA NDA NDA
• Competitive Bench Marking
S. No. Metrics Units Marginal value Ideal Value
1 Dust absorbing capacity of cleaning pad
material
Subj. 3 - 5 5
2 Cleaning pad life cycle Hrs. 40 - 60 >60
3 Unit manufacturing cost $ 2.5 - 6.13 <2.5
4 Total weight gm 190 - 277 <250
5 Final dimensions D mm
W mm
H mm
109 - 174
80 - 117
45 - 98
120-150
60-80
50-60
6 Number Chalk holding capacity Numbers 2 - 4 4
7 Number of Markers holding capacity Numbers 1 - 2 2
Target Specifications
Preliminary Design
Functional Analysis
• Concept Generation
Decomposing problems into subsystems
Concept Selection
Preliminary Sketch
Concepts
• For Wetting System Box• Spray nozzle type wetting
system • Spring Actuated Sponge
wetting• Diaphragm Actuated
Sponge wetting
• For Cover• Hinged
• Sliding
• Snap Fit
ConceptsWetting System Cover
Selection Criteria Spray nozzle
Spring Actuated Sponge wetting
Diaphragm actuated Sponge Wetting
Hinged cover Sliding cover Snap-fit cover
Ease of HandlingEase of useDurabilityEase of ManufacturingEase of assembly
+-+-+
++++-
+--+-
++---
++-++
+++++
Sum +’sSum 0’sSum –‘s
302
401
203
203
401
500
Net ScoreRank
Continue?
12
Yes
31
Yes
-13
No
-13
No
32
Yes
51
Yes
Concept Screening
Concept Rating on weightage Concept
Wetting System CoverSpray nozzle Spring Actuated
Sponge wettingSliding cover Snap-fit cover
Selection Criteria Weight Rating
Weighted Score
Rating Weighted Score
Rating Weighted Score
Rating Weighted Score
Ease of HandlingEase of useDurabilityEase of ManufacturingEase of assembly
15%25%15%20%25%
33424
0.450.750.600.401.00
44343
0.601.000.450.800.75
34234
0.451.000.300.600.80
43434
0.600.750.600.601.00
Total Score Rank
3.2 2
3.6 1
3.15 2
3.55 1
Continue
No Develop No Develop
Final Design Specifications of Final
Design
Values
Weight
0.247kg
Dimension’sLBH
120mm65mm50mm
Number of Markers
Holding Capacity
1
Number of Chalks Holding
Capacity
4
Wetting Technology
Spring Actuated sponge
Cover
Snap-fit Cover
Cost to Customer
$ 3.00
Cost analysis Components
Price
Cost per piece
Plastic components $0.17/lb. $0.1037Cap (rubber ) $0.025/ piece $0.025Velcro $25.50(1”*25yd ) $0.076Sponge $5.25/lot(1”*1m*5m) $0.01Cleaning pad (synthetic felt) $5.50/yd. $0.044Total $0.2549
Components
Cost per piece
Manufacturing and machining (injection molding ) $0.75
Import cost ($50000 shipment) [10] $0.20Labor cost $0.054Building and electricity $0.045
Miscellaneous $0.50Total $1.549
Cost of Duster
Total cost of duster to us = Cost of duster + Fixed and variable cost= 0.2549 + 1.549= $1.81 /piece
Fixed and variable cost
Total cost to Customer = 3.00 (including our margin)
Design For Assembly
Assembly Time Estimation
Part Name
Overall Handling/ Insertion/ Fitting time in seconds (Manual Operation)
Min Max. Avg.
Base 2 4 3
Wetting System box 9 14 10.5
Sponge 2 4 3
Spring 7.8 42 24.9
Shell Plate 4 8 6
Cleaning Pad 3 8 5.5
Cap/Lock for wetting system 2 4 3
Cover 3.5 8 5.9
Total 33.3 92 61.8
Assembly Time
PAYBACK ANALYSIS
Fixed cost = 50000+10000 = 60000$Variable cost =7000 + 8000+5000
= 20,000$Cash in hand = 20,000$
Payback =800000/3.00 (selling cost of duster per piece 3.00)
= 26667 pieces
*We need to sell 26667 pieces to recover our initial investment
Multipurpose Duster with Wetting Technology supply chain model
CONCLUSIONS• Introduction of wetting technology.
• capable of holding markers and chalks.
• Best concept was chosen after comparing them with existing products on the basis of selection criteria like manufacturing cost, material cost, product weight and customer needs importance.
• After selecting the concept, through cost model final specifications were planned.
• All the parts from the suppliers from other countries, efforts were made to design the component as simple as possible and less in numbers.
• An approximate assembly time was calculated • Finally, an estimation of the cost of product
• Overall, at the first look the product seems to attract enough customers because of its unique features and a compatible price among its competitors. But there is always a chance to improve the product by time to suit market needs.
FUTURE GROWTH Further research can be performed on the improving the wetting technology system
better fluid for wetting technology
choice of material for the body parts
choice of material for the cleaning pad etc.
These factors can surely put significant effect in the growth of the product in the future.
Orders are openHurry up!!!
To book your duster