IG A10 Process Capability Indices Process Capability Index (0- /2 U+L Bias factor k2 (U-L)/2 Performance index Cn≡C(1-k pk p(a U-L L U+L U 16.810(16682) Massachusetts Institute of techn
16.810 (16.682) 11 Process Capability Indices Process Capability Index Bias factor Performance Index C U L p { / 2 3V CC k pk p { ( ) 1 k U L U L { P 2 ( )/ 2 p(q) L U L U q 2 U L 2
a10 Rate: Manufacturing Typically: #of units/hour The more parts we make of the same kind), the lower the cost/unit Learning curve effects Higher Speed- Human learning Reduced setup time Fewer Mistakes(=less scarp=higher yield) Bulk quantity discounts =economies of scale) Better negotiating position with suppliers of raw materials and parts 16.810(16682) Massachusetts institute of technol ology it
16.810 (16.682) 12 Rate: Manufacturing Typically: #of units/hour The more parts we make (of the same kind), the lower the cost/unit Learning Curve effects Higher Speed - Human learning Reduced setup time Fewer Mistakes (= less scarp=higher yield) Bulk quantity discounts (=economies of scale) Better negotiating position with suppliers of raw materials and parts