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A quality engineer at a plastic injection molding company spent three weeks conducting a round of DOE, involving three f…
1. Parameters Copied Word for Word, but the Third Machine Produces a Batch of Cold Welds A manufacturing company's weldi…
1. Treating Formulas as Ordinary Factors, 27 Trials Yielded Only Waste Data A manufacturing company sought to improve th…
1. Parameters Tuned to "Best," but Mass Production Can't Maintain A home appliance company was working on improving the …
1. A Question That Stumped Me: "The Optimal Solution" A certain automotive parts company was optimizing parameters to re…
1. Why the Same Data Leads to Different Conclusions in Confirmation Experiments A manufacturing company was working on i…
1. Adjusting Parameters for Three Months, but the Conclusion Fails on the Production Line A manufacturing company was wo…
1. An Experiment That Reached the Opposite Conclusion A die casting company conducted a two level, three factor experime…
1. The 99.7% on the Report, but Not on the Production Line A wave soldering process in an electronics company has had a …
One: 16 Trials Done, but the Conclusion is "Wasted Effort" Engineer Xiao Lin at an electronics factory was assigned a we…
Many companies, after introducing Design of Experiments DOE , focus all their efforts on "designing the plan": how many …
In deep quality improvement efforts, almost everyone hits the same wall: there are seven or eight influencing factors, e…