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Line 17:		Line 17:
	|-		|-
-	! (G2) Back Panel	+	valign="top"
-	| cell 2,1 || cell 2,2	+	| rowspan="1" | (G2) Back Panel
		+	*Protects Rear Bridge Mount and Springs
		+	| Stripped Head ||
		+	*Lodged Screw
		+	| *Wrong Screwdriver <br />*Over tightening of screw || Stuck Screw|| 3 || 3 || 2 || 18 ||
		+	Advise user of possibility of stripped screws
		+	|| 3 || 2 || 2 || 12
	|-		|-
	! (G3) Strings		! (G3) Strings

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Revision as of 18:26, 23 September 2008

Failure Mode and Effects Analysis

Failure Mode and Effects Analysis (FMEA) is a crucial tool in determining if a particular component in a system will fail (in terms of the customer's requirements). By looking at each piece, we can rate the severity of a failure (S), the probability that it will occur (P), and the likelihood that the customer would detect the failure (D). The severity of failure is rated between 1-10, 1 being the effect is not noticed by the consumer, while 10 is hazardous. Probability of occurence is also rated from 1-10, 1 being extremely remote while 10 has an extremely high chance of occurring. Finally, detection is rated from 1-10 with 1 being almost certain to detect and 10 being no chance of detection whatsoever. With these three factors, we can multiply them together to achieve a total risk priority number (RPN) which can range from 1-1000 (1000 being the greatest risk). Below is a table outlining each part.

Fender Bridge FMEA

valign="top"

Part & Function	Failure Mode	Effect of failure	Causes of failure	Detection	S	O	D	RPN	Action	S	O	D	RPN
(G1) Back Panel/ Pickguard Screws Fastener for back panel	Stripped Head	Lodged Screw	*Wrong Screwdriver *Over tightening of screw	Stuck Screw	3	3	2	18	Advise user of possibility of stripped screws	3	2	2	12
(G2) Back Panel Protects Rear Bridge Mount and Springs	Stripped Head	Lodged Screw	*Wrong Screwdriver *Over tightening of screw	Stuck Screw	3	3	2	18	Advise user of possibility of stripped screws	3	2	2	12
(G3) Strings
(G4) Springs
(G5) Whammy Bar
(G6) Bridge Mounting Screws
(G7) Bridge Assembly
(G8) Spring Claw
(G9) Spring Claw Screws
(G10) Saddle Plate
(G11) Saddle Spring}
(G12) Saddle Screw
(G13) Neck
(G14) Neck Mounting Plate
(G15) Bridge Block
(G16) Bridge Block Mounting Screws
(G17) Guitar Body
(G18) Bridge Plate