Page 235 - Design for Six Sigma a Roadmap for Product Development

206 Chapter Six

DFSS Project Scorecard
Example
Scope: Subsystem xxxx Design Mapping: FR1 β 3 A 11 0
Hierarchical Level: 1 FR2 = [β 1 β 3 β 2 β 3 ] M 1 + β 3 A 21 0 DP 1 + error(noise factors)
FR3 M 2 DP 3
01 0 A 31
Axiom 1 Measures
Design Type: Coupled, Decoupled, Uncoupled Ideal Function Design Mapping
Reangulrity = equation 6.4 19
Semangularity = equation 6.5
Pred. FRs
FRs Estimation Transfer Function Robustness Measures Axiom 2 Specification Capability 6σ Score Actual
Loss Short/ z-
FRs Units Distribution Formula FRType Function Complexity Target LSL USL μ σ Long z shift DPMO μ σ
FR1 L
FR2 2 4 6 8 10 12 S 14 16 18
FR3
1 3 5 7 9 11 13 15 17
:
:
FRm
Range Specification Axiom 2 Pred. FRs Capability 6σ Score Actual Capability
Sensitivity Com- Short/ Short/
DPs Estimation Units Min Max Distribution (Aij) LSL USL plexity μ σ Long z z-shift DPMO μ σ Long
DP1
DP2
: :
: :
19

DPp
Range Specification Axiom 2 Pred. FRs Capability 6σ Score Actual Capability
Sensitivity Com- Short/ Short/
DPs Estimation Units Min Max Distribution (Aij) LSL USL plexity μ σ Long z z-shift DPMO μ σ Long
M1
M2
: :
: : 20
Range Sensitivity Matrix
Noise Estimation Noise Name Units Min Max FRs Affected Failure Mode FRs DPs DP1 DP2 .. .. .. DPp
Customer Usage N11 FR1 A11 A12
N12 FR2 A21 A22
: FR3
Piece-to-Piece N21 :
N22 :
: 21 :
Environment N31 22 :
N32 :
: :
Coupling N41 : 19
N42 :
: :
Degradation N51 FRm Amp
Figure 6.14 Design scorecard.