SBS - The Best Value in QMS software

Screening DOE: A coming up headache story



Hi all,

i'm looking for the most important factors that critically influences the EPS molding parts welding.

My issue is the huge quantity of factors to take in consideration (20 more or less), some of that uncontrollable, that should need a very expensive design ( in term of time and money). moreover i can't neglect at least the second order interaction so i can't use III resolution methods.

Any suggest?
Elsmar Forum Sponsor


Forum Moderator
Staff member
Try a Resolution IV design. 2-way interactions are clear of main effects, but will be aliased with other 2-way interactions, so you will have to run additional experiments such as a fold-over to isolate the true interaction.

Another possibility, if your software supports it, is an optimal design.


Thanks for the advices,

yes, i was thinking about IV resolution, in order the clear the main effects, but i have to deal with a acceptable number of runs. actually now i'm trying to reduce the number of factors by means of a discussion with the prosess cheif. moreover at present i'm looking for the adequate number of replicates to do trough a repeatability test.

Have someone some suggest about the determination of number of replicate of the experiment?

Thanks a lot to everyone


Forum Moderator
Staff member
If your factors are continuous, I would use 3 - 5 center points instead of replicates. These will provide a good estimate of experimental error, and with the number of factors in your design, you have a very good likelihood of having hidden replication as you remove non-significant factors from your model.
Last edited:
Thread starter Similar threads Forum Replies Date
J Selecting factors for screening DoE design Statistical Analysis Tools, Techniques and SPC 8
V Screening DOE with 7 Input factors and 4 responses - Significant factors Using Minitab Software 1
T Screening DOE (Design of Experiments) with qualitative response Quality Tools, Improvement and Analysis 23
W Definitive screening design in Minitab 17 Manufacturing and Related Processes 1
S Rapid screening methods for antibiotic residues in Chicken Meat Food Safety - ISO 22000, HACCP (21 CFR 120) 1
V For screening a design, can we live with the low/poor predicted R-Sq.? Statistical Analysis Tools, Techniques and SPC 3
M ITAR Requirements and Visitor Screening AS9100, IAQG, NADCAP and Aerospace related Standards and Requirements 15
F Resolution III Factorial Design for a Screening Experiment Six Sigma 2
S Screening and Screening Rational Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
C Environmental Stress Screening (ESS) - Difference between MIL-HDBK-344 & 2164A Reliability Analysis - Predictions, Testing and Standards 4
I Screening: Blackett Burman versus Fraction Factorial Quality Tools, Improvement and Analysis 2
Stijloor U.S. Intensifies Screening for Travelers From 14 Nations Travel - Hotels, Motels, Planes and Trains 1
E Environmental Screening of PCBAs in High Volume Electronics Contract Manufacturing Inspection, Prints (Drawings), Testing, Sampling and Related Topics 1
S Safety audit violations - bloodborne pathogens, LOTO & drug screening Occupational Health & Safety Management Standards 12
A 510(k) Screening Checklist that the RA has filled out - Is that sheet for FDA use? ISO 13485:2016 - Medical Device Quality Management Systems 2
G Health Insurance - Annual health screening Career and Occupation Discussions 10
S Asterisk in DOE minitab software Using Minitab Software 23
J Including Repeats in DoE using Minitab Using Minitab Software 5
J DoE - Number of runs in Plackett-Burman (Minitab) Using Minitab Software 2
J DoE (Design of Experiments) - Multiple responses with different factors Using Minitab Software 2
K Power point training slides on DOE (Design of Experiments) Wanted Training - Internal, External, Online and Distance Learning 2
I DOE: High variance and small effects in Minitab Using Minitab Software 1
M I have 3 different factors - DOE help Statistical Analysis Tools, Techniques and SPC 3
N Do I need to approach galvanized steel sheet flatness issue with DOE? Problem Solving, Root Cause Fault and Failure Analysis 9
H Taguchi mixed model DoE [L16 (4^3 2^6): factors interaction and ANOVA calculation Using Minitab Software 3
R Is there any Excel .xls Spreadsheet available for DOE with 3 factors? Six Sigma 1
N DOE (design of experiments) in Minitab 16 Using Minitab Software 6
D Interpretation of DOE interaction plot Using Minitab Software 8
D Minitab - Design combinations (DOE) Using Minitab Software 4
C DOE - How to determine optimal settings and transposing data Statistical Analysis Tools, Techniques and SPC 2
N 3 factor - 3 level experiment with DoE and Minitab Using Minitab Software 10
M DOE: Significant factor or not Using Minitab Software 2
P When can we apply DOE (Design of Experiments)? Six Sigma 8
S DOE Analysis - Experiments with 5 Factors Statistical Analysis Tools, Techniques and SPC 11
R [Minitab] DOE Output vs. Actual Data Using Minitab Software 6
S Blocking In a DOE Six Sigma 1
Y Please help me solve a DOE problem - New Minitab User Using Minitab Software 36
P Cyclic Effect Factoring in DOE (Design of Experiments) Quality Tools, Improvement and Analysis 1
V Analysing Results after DOE Using Minitab Software 1
V Analysis of DOE Results and Model Finalization Using Minitab Software 4
J How to Estimate the Number of Replicates on a DOE (Design of Experiments) Six Sigma 5
R 4 Factors 3 Level DOE to determine which factors are significant Using Minitab Software 2
K Minitab Lack-of-Fit Test in DOE (Design of Experiments) Using Minitab Software 4
M Injection Moulding Minitab DOE - All P Values are 0 Using Minitab Software 7
G Setting up a 3 Factor, 2 Level,2 response DOE in Minitab Using Minitab Software 7
Z A DOE in Minitab - 3 factors and 3 levels for each factor Using Minitab Software 12
M Taguchi L4 Orthogonal Array Design of Experiments (DOE) in an Excel spreadsheet Excel .xls Spreadsheet Templates and Tools 3
V Linking the FMEA Causes & Action Plan with DOE Experiments or Experimentation Design FMEA and Control Plans 1
B DOE Question: 3 factors with 2 levels and 1 factor with 3 levels Six Sigma 2
Z Help with running 3 factor DOE factor optimization Using Minitab Software 2

Similar threads

Top Bottom