Low-foam keg tap

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The FMEA done on the current tap design  
The FMEA done on the current tap design  
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 +
{| class="wikitable" border="1"
 +
 +
|-
 +
 +
! Part #
 +
! Item
 +
! Function
 +
! Failure Mode
 +
! Effects of Failure
 +
! S
 +
! Cause of Failure
 +
! O
 +
! Design Controls
 +
! D
 +
! RPN
 +
! Recommended Actions
 +
 +
|-
 +
 +
| align="center"|1
 +
 +
| align="center"|Black Ball
 +
| align="center"|Grip for Pumping
 +
| align="center"|Could be Unscrewed and Lost
 +
| align="center"|Uncomfortable Pumping
 +
| align="center"|4
 +
| align="center"|Unaware Users
 +
| align="center"|1
 +
| align="center"|Make sure the ball is screwed on tightly
 +
| align="center"|1
 +
| align="center"|4
 +
| align="center"|Apply Loctite
 +
 +
|-
 +
 +
| align="center"|2
 +
 +
| align="center"|Plunger
 +
| align="center"|Forces Air into Keg
 +
| align="center"|Could be snapped off while locked into keg
 +
| align="center"|Unusable
 +
| align="center"|7
 +
| align="center"|Unaware Users
 +
| align="center"|1
 +
| align="center"|Increase diameter
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|Be careful!
 +
|-
 +
 +
| align="center"|2.1
 +
 +
| align="center"|Plunger Disc
 +
| align="center"|Air Tight
 +
| align="center"|This part is very robust.  Cannot foresee any failure modes.
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
|-
 +
 +
| align="center"|3
 +
 +
| align="center"|Plunger O-Ring
 +
| align="center"|Seal
 +
| align="center"|O-ring becomes hardened
 +
| align="center"|Loss of air tight seal for pressurizing keg
 +
| align="center"|3
 +
| align="center"|Repeated use and time
 +
| align="center"|2
 +
| align="center"|Oil the o-ring
 +
| align="center"|5
 +
| align="center"|30
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|4
 +
 +
| align="center"|Cylindrical Plunger Casing
 +
| align="center"|Supply Keg with Pressure
 +
| align="center"|Dent in the casing, burs, scratches, rust on the inside of the casing
 +
| align="center"|Plunger cannot be moved inside the case, o-ring gets torn up
 +
| align="center"|7
 +
| align="center"|Misuse, Dropping the tap
 +
| align="center"|1
 +
| align="center"|All these pieces are robust enough
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|None
 +
 +
|-
 +
 +
| align="center"|5
 +
 +
| align="center"|Cylindrical Casing O-Ring
 +
| align="center"|Seal
 +
| align="center"|O-ring becomes hardened
 +
| align="center"|Loss of air tight seal for pressurizing keg
 +
| align="center"|3
 +
| align="center"|Repeated use and time
 +
| align="center"|2
 +
| align="center"|Oil the o-ring
 +
| align="center"|5
 +
| align="center"|30
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|6
 +
 +
| align="center"|Cylindrical Top
 +
| align="center"|Encloses Plunger in Casing
 +
| align="center"|Top comes unscrewed
 +
| align="center"|Cannot pressurize keg
 +
| align="center"|1
 +
| align="center"|Human tampering
 +
| align="center"|4
 +
| align="center"|Check that it is screwed on tightly
 +
| align="center"|2
 +
| align="center"|8
 +
| align="center"|None, gluing these threads makes disassembly harder
 +
 +
|-
 +
 +
| align="center"|7
 +
 +
| align="center"|Plunger Spring
 +
| align="center"|Prevents Plunger from Getting Stuck
 +
| align="center"|Breaks
 +
| align="center"|Plunger, though unlikely, may get stuck at top of casing
 +
| align="center"|7
 +
| align="center"|Misuse or fatigue
 +
| align="center"|1
 +
| align="center"|Make sure spring can handle forces
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|8
 +
 +
| align="center"|Center Cylinder
 +
| align="center"|Separates Air Input from Beer Output
 +
| align="center"|1)Leaks beer at the connection point with hose
 +
2)Creates turbulence in beer flow
 +
| align="center"|1)Loss of beer
 +
2)Foamy beer
 +
| align="center"|7
 +
| align="center"|1)Sealant on threads is old
 +
2)Manufacturing
 +
| align="center"|7
 +
| align="center"|1)Check that their are no leaks
 +
2)Their Design
 +
| align="center"|1
 +
| align="center"|49
 +
| align="center"|1)None
 +
2)Look into some other way to transition into tubing
 +
 +
|-
 +
 +
| align="center"|9
 +
 +
| align="center"|Center Cylinder O-Ring
 +
| align="center"|Seal
 +
| align="center"|O-ring becomes hardened
 +
| align="center"|Loss of air tight seal for pressurizing keg
 +
| align="center"|3
 +
| align="center"|Repeated use and time
 +
| align="center"|2
 +
| align="center"|Oil the o-ring
 +
| align="center"|5
 +
| align="center"|30
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|10
 +
 +
| align="center"|Lever
 +
| align="center"|Attaches Tap and Keg allowing the flow of beer
 +
| align="center"|This part is very robust. Cannot foresee any failure modes.
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
|-
 +
 +
| align="center"|11
 +
 +
| align="center"|Lever Casing
 +
| align="center"|Grip for user
 +
| align="center"|Breaks
 +
| align="center"|Unable to attach tap to keg
 +
| align="center"|7
 +
| align="center"|Ridiculous Misuse
 +
| align="center"|2
 +
| align="center"|Make sure the part is strong enough
 +
| align="center"|1
 +
| align="center"|14
 +
| align="center"|None
 +
 +
|-
 +
 +
| align="center"|12
 +
 +
| align="center"|White Cap
 +
| align="center"|Aesthetics
 +
| align="center"|Could break or get lost
 +
| align="center"|None
 +
| align="center"|1
 +
| align="center"|Misuse or overuse
 +
| align="center"|2
 +
| align="center"|Check this fit
 +
| align="center"|1
 +
| align="center"|2
 +
| align="center"|None
 +
 +
|-
 +
 +
| align="center"|13
 +
 +
| align="center"|Lever Spring
 +
| align="center"|Helps lock tap in two certain positions
 +
| align="center"|Impact fatigue
 +
| align="center"|Unable to lock tap into open position on keg
 +
| align="center"|7
 +
| align="center"|User misuse
 +
| align="center"|1
 +
| align="center"|Make sure spring can handle forces
 +
| align="center"|2
 +
| align="center"|14
 +
| align="center"|Brainstorm new ways to lock tap
 +
 +
|-
 +
 +
| align="center"|14
 +
 +
| align="center"|Center Rod
 +
| align="center"|Helps hold handle together
 +
| align="center"|This part is very robust.  Cannot foresee any failure modes.
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
|-
 +
 +
| align="center"|15
 +
 +
| align="center"|Nut
 +
| align="center"|Helps hold handle together
 +
| align="center"|Could come unscrewed
 +
| align="center"|Unable to use tap
 +
| align="center"|7
 +
| align="center"|Repeated use
 +
| align="center"|1
 +
| align="center"|Make sure it is screwed on the whole way
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|None
 +
 +
|-
 +
 +
| align="center"|16
 +
 +
| align="center"|Washer
 +
| align="center"|Helps hold handle together
 +
| align="center"|Cannot foresee any failure modes
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
|-
 +
 +
| align="center"|17
 +
 +
| align="center"|Lever Pin
 +
| align="center"|Attaches the lever to the base and acts as a pivot point for the lever
 +
| align="center"|No foreseen failure modes.
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
|-
 +
 +
| align="center"|18
 +
 +
| align="center"|Base
 +
| align="center"|Attaches to Keg
 +
| align="center"|Threads become crooked
 +
| align="center"|Unable to connect tap to keg
 +
| align="center"|7
 +
| align="center"|Terrible misuse
 +
| align="center"|1
 +
| align="center"|Threads are very robust
 +
| align="center"|2
 +
| align="center"|14
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|19
 +
 +
| align="center"|Base O-Ring
 +
| align="center"|Seal
 +
| align="center"|O-ring becomes hardened
 +
| align="center"|Loss of air tight seal for pressurizing keg
 +
| align="center"|3
 +
| align="center"|Repeated use and time
 +
| align="center"|2
 +
| align="center"|Oil the o-ring
 +
| align="center"|5
 +
| align="center"|30
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|20
 +
 +
| align="center"|Hose
 +
| align="center"|Transfers Beer from Tap to Cup
 +
| align="center"|1)Hole
 +
2)Kink
 +
| align="center"|1)Beer is lost
 +
2)Beer cannot reach its destination
 +
| align="center"|7
 +
| align="center"|1)Not taking care of tap
 +
2)Jokes
 +
| align="center"|1
 +
| align="center"|Make sure the tubing is the right kind
 +
| align="center"|2
 +
| align="center"|14
 +
| align="center"|None
 +
 +
|-
 +
 +
| align="center"|21
 +
 +
| align="center"|Nozzle
 +
Sub-assembly
 +
| align="center"|Releases Beer from Hose
 +
| align="center"|Failures will follow from individual parts
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
|-
 +
 +
| align="center"|21.1
 +
 +
| align="center"|Handle
 +
| align="center"|Allows the user to start and stop the flow of beer
 +
| align="center"|Deform/Break
 +
| align="center"|Beer would not be allowed to come out the nozzle
 +
| align="center"|7
 +
| align="center"|Pushing the handle past where it should be
 +
| align="center"|1
 +
| align="center"|Use thick enough plastic
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|21.2
 +
 +
| align="center"|White Plastic Center
 +
| align="center"|Connects nozzle handle to cap seal
 +
| align="center"|Connection point to nozzle handle breaks
 +
| align="center"|Beer can not come out of nozzle
 +
| align="center"|7
 +
| align="center"|Pushing the handle past where it should be
 +
| align="center"|1
 +
| align="center"|Test to make sure it operates the way it should
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|Sell spare parts, look for a possible redesign
 +
 +
|-
 +
 +
| align="center"|21.3
 +
 +
| align="center"|Spring
 +
| align="center"|Apply extra force to keep the pressurized beer from coming out of the keg
 +
| align="center"|No foreseen failure modes
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|---
 +
| align="center"|-
 +
| align="center"|-
 +
| align="center"|---
 +
 +
 +
 +
|-
 +
 +
| align="center"|21.4
 +
 +
| align="center"|Hard Plastic Cap
 +
| align="center"|Connects the Handle to the nozzle
 +
| align="center"|Fracture
 +
| align="center"|Nozzle/Handle would not be able to function
 +
| align="center"|7
 +
| align="center"|Over tightening the cap onto the nozzle
 +
| align="center"|1
 +
| align="center"|Tighten cap enough so users do not have to
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|Sell spare parts
 +
 +
|-
 +
 +
| align="center"|22
 +
 +
| align="center"|Nozzle Seal
 +
| align="center"|Blocks the flow from leaving the hose
 +
| align="center"|Surface fatigue wear
 +
| align="center"|Beer would leak through and leave the nozzle
 +
| align="center"|7
 +
| align="center"|Repeated use
 +
| align="center"|1
 +
| align="center"|Make sure the rubber used can withstand many cycles
 +
| align="center"|1
 +
| align="center"|7
 +
| align="center"|Sell spare parts
 +
|}
*  DFMA
*  DFMA

Revision as of 13:26, 5 December 2009

Contents

Executive Summary

Provide a brief executive summary summarizing your findings and conclusions. In particular, summarize

  1. Findings from market research justifying need for the new product: Survey distributed; found that users desire a lower foam output, easier pumping mechanism, and more intuitive tap design
  2. The product's main features, advantages over competitors, and target market: center cylinder redesigned to eliminate 90 degree bend in liquid output (straight tube means less foam), final product will include pressure gauge to prevent overpumping; competing products create more foam; target market is beer distributors and college students
  3. The most important findings from your product analyses that justify design choices and support your case for the new product.

Market Analysis

Make the case that there exists a market need for your product using market research findings, illustrative pictures, benchmarking against competitors, and identifying your target market. Estimate a ballpark expected price and production volume for the product and compare against expected cost. Determine if the product has high likelihood to be profitable or unprofitable or if more information is needed to determine. Is there enough potential to justify investment in further market research and testing?

Design Documentation

Include assembly drawings with all components labeled as well as a bill of materials defining each component with quantity, material, etc. Include a fully dimensioned CAD drawing for each custom component and a company and part number for each purchased component.

Whether or not the base is cast or bought depends on the production volume. As of now, the assumption is that the number of taps produced will not make it worth it to make the part. The individual component can be purchased at ____ for $xx.


Part Number Name QTY Weight (oz) Function Material Manufacturing Process Image CAD drawing
1 Handle 1 1 Grip for pumping Plastic Injection molding - -
2 Plunger 2 4.3 Forces air into casing Stainless Steel Extrusion, machined threads Image:KegTap_Plunger.jpg -
2.1 Plunger Disc 2 0.5 Air tight Brass Extrusion, drilled holes -- -
3 Plunger O-Ring 2 0.05 Seal Rubber Injection molding
-
4 Cylindrical Plunger Casing 2 6.3 Pressure for pumping Stainless Steel Extrusion, machined threads Image:KegTap_CylindricalPlungerCasing.jpg -
5 Cylindrical Casing O-Ring 2 0.05 Seal Rubber Injection Molding
-
6 Cylindrical Top 2 1.7 Encloses plunger in casing Stainless Steel Extrusion, lathe, machined threads
-
7 Plunger Spring 2 0.1 Prevents plunger from getting stuck Stainless Steel Extrusion, coiled Image:KepTap_Spring.jpg -
8 Center Cylinder 1 - Separates air input from beer output Stainless Steel Extrusion, mill, lathe, drilled holes, machined threads - -
9 Center Cylinder O-Ring 1 0.05 Seal Rubber Injection molding
-
10 Lever 1 4.1 Attaches tap to keg Steel Cast, machined threads Image:KegTap_Lever.jpg -
11 Lever Casing 1 0.5 Provides grip for user to pull lever up Plastic Injection molding Image:KegTap_LeverCasing.jpg -
12 White Cap 1 0.1 Prevents nut from potentially falling off Plastic Injection molding
-
13 Lever spring 1 0.1 Provides compression that enables lever to lock in place Stainless steel Extrusion, coiled Image:KegTap_LeverSpring1.jpg -
14 Center Rod 1 0.5 Locks lever into machined groove on base Brass Extrusion, machined threads Image:KegTap_CenterRod.jpg -
15 Nut 1 0.05 Attaches center rod to lever casing Steel Machined
-
16 Washer 1 0.05 Distributes force of nut Steel Stamped
-
17 Lever Pin 1 0.2 Holds lever on base Steel Extrusion, machined Image:KegTap_LeverPin.jpg -
18 Base 1 7.2 Attaches to keg Steel (Sand) cast Image:KegTap_Base.jpg -
19 Base O-Ring 1 0.1 Seal Rubber Injection molding
-
20 Hose 1 2.7 Transfers beer from keg to cup Plastic Extrusion Image:KegTap_Hose.jpg -
20.1 Connector 1 -- Connects hose to center cylinder Brass Machined -- -
20.2 Spout 1 -- Connects hose to nozzle Plastic Injection molding -- -
21 Nozzle Sub-assembly 1 0.4 Releases beer from hose Plastic Injection molding Image:KegTap_Nozzle.jpg -
21.1 Handle 1 -- Provides leverage to compress the spring, opening the seal and releasing beer Plastic Injection molding -- -
21.2 White Plastic Center 1 -- Connects nozzle handle to the cap seal Plastic Injection molding -- -
21.3 Spring 1 -- Keeps handle down when nozzle not in use Steel Extrusion, coiled -- -
21.4 Hard Plastic Cap 1 -- Attaches lever to nozzle base Plastic Injection molding -- -
22 Nozzle Seal 1 -- Prevents beer from exiting nozzle until handle is lifted Rubber Thermoforming
-
23 Main Block 1 -- Channels air into the center cylinder and provides a straight outlet for the beer Stainless steel Thermoforming - -

House of Quality

Provide a complete house of quality table to summarize your design choices, targets, relationships, and benchmarking against the competition. Highlight major findings and conclusions.

  • Finished, needs to be checked

Design Analysis

Report on conclusions and recommendations from your DFMA, FMEA, and DFE findings for your product, and benchmark against the competition. Highlight major findings in the report and provide data in the appendix.

  • DFE

Our DFE conclusions from the tap design in use currently, showed that our group should work to reduce the amount of foam created. The foam was the largest component of greenhouse gas emissions associated with our product. Therefore reducing the foam created would be a great way to reduce the impact our product has on the environment. See Keg tap Section 8.

Due to the number and types of changes we have made to the original tap to create our foam-reducing tap, the DFE for our product would be identical to the original tap, with one major change: the amount of foam created by our product is less. The reduced foam creation in our tap means our product will have a reduced impact on the environment.

  • FMEA

The FMEA done on the current tap design

Part # Item Function Failure Mode Effects of Failure S Cause of Failure O Design Controls D RPN Recommended Actions
1 Black Ball Grip for Pumping Could be Unscrewed and Lost Uncomfortable Pumping 4 Unaware Users 1 Make sure the ball is screwed on tightly 1 4 Apply Loctite
2 Plunger Forces Air into Keg Could be snapped off while locked into keg Unusable 7 Unaware Users 1 Increase diameter 1 7 Be careful!
2.1 Plunger Disc Air Tight This part is very robust. Cannot foresee any failure modes. --- - --- - --- - - ---
3 Plunger O-Ring Seal O-ring becomes hardened Loss of air tight seal for pressurizing keg 3 Repeated use and time 2 Oil the o-ring 5 30 Sell spare parts
4 Cylindrical Plunger Casing Supply Keg with Pressure Dent in the casing, burs, scratches, rust on the inside of the casing Plunger cannot be moved inside the case, o-ring gets torn up 7 Misuse, Dropping the tap 1 All these pieces are robust enough 1 7 None
5 Cylindrical Casing O-Ring Seal O-ring becomes hardened Loss of air tight seal for pressurizing keg 3 Repeated use and time 2 Oil the o-ring 5 30 Sell spare parts
6 Cylindrical Top Encloses Plunger in Casing Top comes unscrewed Cannot pressurize keg 1 Human tampering 4 Check that it is screwed on tightly 2 8 None, gluing these threads makes disassembly harder
7 Plunger Spring Prevents Plunger from Getting Stuck Breaks Plunger, though unlikely, may get stuck at top of casing 7 Misuse or fatigue 1 Make sure spring can handle forces 1 7 Sell spare parts
8 Center Cylinder Separates Air Input from Beer Output 1)Leaks beer at the connection point with hose

2)Creates turbulence in beer flow

1)Loss of beer

2)Foamy beer

7 1)Sealant on threads is old

2)Manufacturing

7 1)Check that their are no leaks

2)Their Design

1 49 1)None

2)Look into some other way to transition into tubing

9 Center Cylinder O-Ring Seal O-ring becomes hardened Loss of air tight seal for pressurizing keg 3 Repeated use and time 2 Oil the o-ring 5 30 Sell spare parts
10 Lever Attaches Tap and Keg allowing the flow of beer This part is very robust. Cannot foresee any failure modes. --- - --- - --- - - ---
11 Lever Casing Grip for user Breaks Unable to attach tap to keg 7 Ridiculous Misuse 2 Make sure the part is strong enough 1 14 None
12 White Cap Aesthetics Could break or get lost None 1 Misuse or overuse 2 Check this fit 1 2 None
13 Lever Spring Helps lock tap in two certain positions Impact fatigue Unable to lock tap into open position on keg 7 User misuse 1 Make sure spring can handle forces 2 14 Brainstorm new ways to lock tap
14 Center Rod Helps hold handle together This part is very robust. Cannot foresee any failure modes. --- - --- - --- - - ---
15 Nut Helps hold handle together Could come unscrewed Unable to use tap 7 Repeated use 1 Make sure it is screwed on the whole way 1 7 None
16 Washer Helps hold handle together Cannot foresee any failure modes --- - --- - --- - - ---
17 Lever Pin Attaches the lever to the base and acts as a pivot point for the lever No foreseen failure modes. --- - --- - --- - - ---
18 Base Attaches to Keg Threads become crooked Unable to connect tap to keg 7 Terrible misuse 1 Threads are very robust 2 14 Sell spare parts
19 Base O-Ring Seal O-ring becomes hardened Loss of air tight seal for pressurizing keg 3 Repeated use and time 2 Oil the o-ring 5 30 Sell spare parts
20 Hose Transfers Beer from Tap to Cup 1)Hole

2)Kink

1)Beer is lost

2)Beer cannot reach its destination

7 1)Not taking care of tap

2)Jokes

1 Make sure the tubing is the right kind 2 14 None
21 Nozzle

Sub-assembly

Releases Beer from Hose Failures will follow from individual parts --- - --- - --- - - ---
21.1 Handle Allows the user to start and stop the flow of beer Deform/Break Beer would not be allowed to come out the nozzle 7 Pushing the handle past where it should be 1 Use thick enough plastic 1 7 Sell spare parts
21.2 White Plastic Center Connects nozzle handle to cap seal Connection point to nozzle handle breaks Beer can not come out of nozzle 7 Pushing the handle past where it should be 1 Test to make sure it operates the way it should 1 7 Sell spare parts, look for a possible redesign
21.3 Spring Apply extra force to keep the pressurized beer from coming out of the keg No foreseen failure modes --- - --- - --- - - ---


21.4 Hard Plastic Cap Connects the Handle to the nozzle Fracture Nozzle/Handle would not be able to function 7 Over tightening the cap onto the nozzle 1 Tighten cap enough so users do not have to 1 7 Sell spare parts
22 Nozzle Seal Blocks the flow from leaving the hose Surface fatigue wear Beer would leak through and leave the nozzle 7 Repeated use 1 Make sure the rubber used can withstand many cycles 1 7 Sell spare parts
  • DFMA

Mechanical Analysis

Clearly state the purpose of the analysis, methods and assumptions. Define all symbols, and provide a free body diagram, if applicable. Summarize conclusions and implications for you design, and explain how the analysis serves to justify your design choices.

Prototype Documentation

Document your final prototype, explain what it demonstrates about your design, and clearly identify differences between your prototype and final design intended for mass production. Summarize findings from user testing and user feedback.

Design Process

Include a short section documenting your team design process for scheduling, coordinating, and completing tasks. Identify individual team member roles, responsibilities, and contributions. Assess the state of the product. Is the design ready for production? If not, what are the next steps (eg. more testing, quantitative market research)?

Appendix

Include Design analysis data here.

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