Wine bottle opener
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| body - holds every component together || to broken or bent || item falls apart -> not usable anymore || 5 || drop the item, shipping damages || 3 || none || 2 || 30 || thicker sections / material selection | | body - holds every component together || to broken or bent || item falls apart -> not usable anymore || 5 || drop the item, shipping damages || 3 || none || 2 || 30 || thicker sections / material selection | ||
+ | |- | ||
+ | | rowspan="2" | corkscrew - screw the cork out of the bottle || got broken || unusable || 5 || stuck in cork / drop the item / use the item at very low temperature || 2 || testing resistance of the corkscrew || 3 || 30 || rowspan="2" | include second corkscrew, make it easy to change the component, change material | ||
+ | | got bet | ||
|} | |} |
Revision as of 21:39, 30 January 2014
Contents |
Executive Summary
Product Stakeholders
Listed below are the stakeholders associated with a corkscrew wine opener and the aspects of the product that appeal to them. The following table contains some aspects that each stakeholder would need and want in an ideal wine opener.
Stakeholder Needs | |||
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Stakeholder | Needs | Wants | |
Consumers |
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Retailer |
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Manufacturer |
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Distributor |
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Product Use Study
Failure Mode and Effects Analysis (FMEA)
|- |squeeze too hard || 7 || Fatigue, Loss of Power from Motor || 1 || Fatigue Testing of Fan || 1 || 7 || Choose Material to Meet Needs |- |rowspan="4"| USB - Provides Power || Disconnection || Loss of power to chill pad || 2 || Loose Port, Something Snags Cord || 7 || rowspan="4" | None || 1 || 14 || Entertain options for compact cord wrapping |- |Broken inner wires || Loss of functionality || 6 || Damage to cord || 2 || 3 || 36 || rowspan="2" | None (Out of Designer Control) |- |Bend on connector || Connector could break off inside laptop || 7 || Bumping Connector While Inside Port || 2 || 1 || 14 |- |Power diverted elsewhere || Lower performance of chill pad || 2 || Too Much Usage from Programs || 3 || 3 || 18 || Keep Software to Low Power Usage Specs |- |Casing - Protects fan || Fan blades break off || Laptop heats up || 6 || Dent/Other Defect Causes Fan to Collide with Casing || 1 || Tolerance Testing on Fan/Casing || 3 || 18 || Keep Injection Mold Simple to Avoid Defects |- |Motor - Drives Fan|| Fatigue || Stops rotating fan || 6 || Electrical Problem, Demagnetization || 1 || Cyclic Testing of Motor || 3 || 18 || Entertain Different Motor Configurations |- |rowspan="2"| Air Intake - Allows Air to Enter Through Bottom ||Allowance of More than Air to Get Through Fan||Lower fan performance, Possible damage fan|| 3 || Over-sized openings || 3 || Testing with Dust/Debris Under Chill Pad || 2 || 18 || Reduce Hole Size |- |Mechanism Holding USB Cord Breaks||No convenient storage of for USB Cord|| 3 || Broken(Yielded) Tabs|| 3 || Cyclic testing of tabs || 2 || 18 || Retractable USB Cord |- |Grill - Allows Air Through Top||Particles slipping through grill|| Possible damage to fan || 3 || Over-sized openings, Damaged grill || 2 || Strength testing of grill || 2 || 12 || Change Angle of Grill, or Use Different Cooling Method |- |Screws - Holds Assembly Together||Loosening|| Assembly falling apart || 4 || Overuse, Fatigue || 2 || Testing of regular use || 3 || 24 || None (Out of Designer Control) |- |Rubber stoppers - Stops the computer from slipping || Disconnects from grill || Laptop slips off chill pad || 4 || Overuse, designed too loosely || 3 || Load and cyclic testing on stoppers || 2 || 24 || Put stronger grips on rubber stopper or adhere them differently
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|Rubber spacers - Pushes apart the top and bottom cover || Rubber tears || Top and bottom are not tightly connected everywhere || 4 || Overuse, weak rubber material || 2 || Cyclic testing on the assembly with spacers || 4 || 32 || Add more support to lessen the load on each spacer
Table
FMEA - Wine Bottle Opener | ||||||||||
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Items and Function | Failure Mode | Effects of Failure | Severity | Causes of Failure | Probability of Occurrence | Design Control | Detectability | RPN | Recommended Actions | |
Handles - hold and squeeze the bottle | become loose | drop the bottle | 9 | drop the item, shipping damages, rubber is defective | 3 | Test the pins (fatigue) and test the rubber | 3 | 81 | make sure the rubber are well stuck in the handles | |
squeeze too hard | break the bottle | 7 | super strong user/defective rubber | 1 | testing resistance of a bottle and rubber | 3 | 21 | Write something in the manual about the strength that should be used | ||
lever arm pin - attaches the arm to the body | got broken or bent | lever arm gets detached from the body -> drop the bottle or self injury | 7 | too much force/torque applied, pin is not strong enough | 3 | test the pin | 1 | 21 | improve geometry (larger cross section) or better material selection | |
cork and screw - close the bottle | lever arm rotation stopped before the end | screw not deep enough into the cork -> cork may break | 4 | inappropriate use of the item | 3 | none | 2 | 24 | set a "stop click" which prevents to rotate backwards before a certain angle / write something in the manual | |
body - holds every component together | to broken or bent | item falls apart -> not usable anymore | 5 | drop the item, shipping damages | 3 | none | 2 | 30 | thicker sections / material selection | |
corkscrew - screw the cork out of the bottle | got broken | unusable | 5 | stuck in cork / drop the item / use the item at very low temperature | 2 | testing resistance of the corkscrew | 3 | 30 | include second corkscrew, make it easy to change the component, change material | got bet |