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