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|Qualitek-4 Version 15.5+ with experiment planning guide and more. Read Qualitek-4 Q&A. Download Full-Featured Working DEMO (No registration required)||Our working DEMO allows you to utilize L-8 array for designing your own experiments.|
Taguchi Design of Experiments
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Do you need help with your own application? If you or your colleagues are active practitioners of DOE and/or the Taguchi experimental design technique, you may find participation in the Taguchi DOE Application Group ( http://groups.google.com/group/TDA-DG?hl=en ) helpful. In this group, members help others and share their experience. You may ask questions or answer questions others ask. For free literature on the Taguchi/DOE, please visit: http://nutek-us.com/wp-free.html
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Qualitek-4 (Windows 7)
Feel free to download the Full Featured Working Model (DEMO) of our Qualitek-4 program and use it for limited time to design and analyze your own experiments which utilize L-8 array. The DEMO program also contains over 50 example experiment files for your review. These example experiments include all exercises in the texts: A PRIMER ON THE TAGUCHI METHOD and DESIGN OF EXPERIMENTS USING THE TAGUCHI APPROACH, all problems and exercises in the our 4-day seminar handout, and many other practical case studies.
Make older programs run in Windows 7 (32 Bits)
If a program written for an earlier version of Windows doesn't run correctly, you can try changing the compatibility settings for the program, either manually or by using the Program Compatibility troubleshooter.
If you cannot install a program, insert the installation disc for the program and, using the troubleshooter, browse to the program's setup file, usually called Setup.exe, Install.exe, or something similar. The troubleshooter is not designed to work on programs that have an .msi file name extension.
(I) Windows 7, Systems: Problem - "The file ?C:\Windows\system32\MSVBVM60.dll? could not be opened"
- submitted by Wong, Bruce, Qualcomm, San Francisco, CA.
REGIONAL SETTINGS FOR EUROPEAN USERS
European Users: Please be aware that you may need to change the regional settings to conform to American style decimal notation. [Likely error message: Error code 9 subscript out of range]. Qalitek-4 data file format requires English (United States) format. Set "English (United States)" as your preference.
Problem due to REGIONAL
SETTINGS: Qualitek-4 data file format requires English (United States) format. If your Windows is
set to run in a non-English speaking settings, you may have difficulty with
proper retrieval and display of results. If you experience such problems with the
default experiment file PISTON.Q4W, you
need to correct the
setting following the steps shown: a. From Windows (Xp) START, select
a. From Windows (Xp) START, selectCONTROL PANEL.
REPORTING PROBLEMS: Should you experience problem installing and/or running Qualitek-4, please write us (Support@Nutek-us.com ) with information about YOUR SYSTEM, Reg# you used, SCREEN SHOT of problem or question you have.
WHAT DOES THE PROGRAM DO?
Qualitek-4 Capabilities: Design Experiments, Analyze Results, Calculate Loss/Savings, and many more. Detail Capability Description: L-4, L-8, ...L-54, L-64, and L-81 orthogonal arrays ..2, 3 and 4 level Control and Noise factors ..On-line experiment planning and design help ..Spreadsheet data input and full screen editing ..User defined arrays for special experiment design... Automatic individual trial condition descriptions .. Preparation of results by combining multiple Criteria of Evaluations into a single index (OEC) ... Result import from text and spread sheet program files .. Writing report files to disk for word processing.. On-line Taguchi method overview ... Up to 120 repetitions (samples/trial) of results...Standard, S/N and Dynamic Characteristic analysis ... Fully automatic standard and S/N ratio analysis for bigger, smaller or nominal is better quality characteristic. ... Color graphic display and printing of... Main Effects ... Interactions ... Bar and Pie Chart of Factor Influences ... Stacked Bar Chart of Optimum Performance... Selective and automatic pooling. ..Confidence Interval computation ...Estimate of performance at Optimum Condition...Automatic S/N ratio to original units transformation
QT4 performs analysis automatically. When you select the type of analysis and the quality characteristic, the program computes Main Effects, performs ANOVA and determines the Optimum Condition with minimal user involvement. At each step, it allows you to select additional options from the screen menu or proceed directly to the next step.
" ........ I like to acknowledge the utility of Qualitek-4 software. I used it during my postdoctoral study at Johns Hopkins University (2008-2010). We got good results from this and publish them in two research papers. Currently, I am serving as an assistant professor of mechanical engineering at University of the District of Columbia, at Washington DC. I am trying to incorporate Taguchi Design of Experiment and analysis training in undergraduate curriculum in Mechanical Engineering program. I believe students must be exposed to this useful technique to enable them solve critical engineering problems, or at least give them confidence to deal with multivariable optimization problems. While teaching I am also learning the depth of this useful technique. So thanks for putting this useful program together and making it available.
Sincerely, - Pawan Tyagi, Asst. Professor, John Hopkins University. "
CALL to place order or seePRICE LIST below
) for prices on
Multiple User License, Site and Corporate Site Licenses.
DELIVERY: Nutek will ship the software you order (via U.S. Mail or UPS) within 5 working days of receipt of order. If you need the software program immediately, you may request for registration number by email before the shipment of the package.
System Requirement: To run Qualitek-4, you will need a recent model IBM/Compatible computer with Windows software and 50 MEG of hard disk space.
HOW TO ORDER
(CD-ROM and License letter. The Reference Manual is is provided in PDF
format on the CD-ROM)
[A.2] Use your Company Purchase Order to place an order with
[B.2]STUDENT VERSION: As a student, instructor or consultant, you may also purchase Qualitek-4 software with limited experiment design capability (L-4, L-8, L-9 and L-12 arrays only) at a much discounted price of only $99/copy.
Notes to Instructors
If you are an instructor teaching DOE/Taguchi Approach, you would be glad to discovered that the working DEMO version of Qualitek-4 software (which you downloaded) can be used to design over 15 different types of experiments that utilize the L-8 orthogonal array. If your class exercises are all based on L-8 array, you can freely distribute and your student can use it DEMO software for limited time. Here are all the different ways an L-8 array can be used.
(1) Four 2-Level factors (2) Five 2-Level factors (3) Six 2-Level factors (4) Seven 2-Level factors (5) Four 2-Level factors + Three interactions (6) Five 2-Level factors + Two interactions (7) Six 2-Level factors + One interaction (8) Four 2-Level factors + One 4-Level factor (9) Three 2-Level factors + One 4-Level factor (10) Two 2-Level factors + One 4-Level factor (11) One 2-Level factors + One 4-Level factor (12) Four 2-Level factors + One 3-Level factor (13) Three 2-Level factors + One 3-Level factor (14) Two 2-Level factors + One 3-Level factor (15) One 2-Level factors + One 3-Level factor
Example files in the QT4 disk also include over 50 experiments. You can examine these example experiments by using OPEN option from the Configuration Screen and select files with prefixes as: SEM-EX01.QT4, SEM-EX02.QT4, SEM-PP01, TEXT-E91.QT4, TEXT-E92, etc."
Capability Summary and Practice Steps
Experiment Designs- You will have option to let Q4W design the experiment or do it yourself. In automatic design, you simply indicate what are your factors and levels, it selects the array and assigns the factors to the appropriate columns. You also have a limited selection of interactions and outer array designs. While automatic design can handle most of your common experiment designs, the manual design option allows you to create the special designs to suit your needs.
Running Experiments -Once you are satisfied with your experiment design, Q4W readily describes the recipes for you to carry out the experiments. It also suggest the random order of conducting each of the experiment which are described in separate pages to resemble an work order.
Analysis of Results- The three basic steps in analysis; Main Effect, ANOVA, and Optimum studies are carried out in sequence with click of OK buttons. Analyses can be performed using Standard or S/N for Smaller, Bigger, Nominal or Dynamic Characteristics.
Miscellaneous Features- Automatic test of presence of interaction, Plot of interaction between two, three and four level factors, Least Squares quadratic curve fitting between average effects for three and four level factors, plot of Main Effects, Bar graph and Pie diagram for ANOVA results, Stacked diagram for factor contributions to Optimum, etc. Problems With Download: Send an email to Support@Nutek-us.com with above information. Have a question with your applications?
Visit our DOE Expert Users site and ask any application related question you may have.
Have a question about experiment designs?
Learn about Qualitek-4 Capabilities (Review pdf - slides)
Getting Started with Qualitek-4
You must plan your experiment with utmost care.
Prepare a list of factors and levels for a practice experiment (say 5 factors at 2-level
each). Click on the
menu and select Manual Design. Check
L-8 for your design. When in design screen, describe factors and their levels by assigning
to any rows (which are columns of the array). Since you will be using five of the seven
available columns, click on the UNUSED button to
designate the two columns as unused. Click OK to move to the orthogonal array screen.
Click OK to experiment file screen. Supply only the first eight characters of your file
name. The file
extension, .Q4W, is automatically
After design is completed, you may review the trial condition by clicking on REVIEW menu and selecting Trial Condition.
Should you want to carry out these experiments, you may print some or all the trial
conditions. Result Entry Once the experiments are carried out, you will need to enter the results by clicking on
RESULT menu and then, selecting Enter Result option. If your result includes multiple
evaluation criteria, you will select Multiple Criteria (OEC) option. Enter
results/evaluation criteria as applicable. When done entering results, perform analysis
following steps 3 - 8 as described above.
Experiment Designs Prepare a list of factors and levels for a practice experiment (say 5 factors at 2-level each). Click on the DESIGN menu and select Manual Design. Check L-8 for your design. When in design screen, describe factors and their levels by assigning to any rows (which are columns of the array). Since you will be using five of the seven available columns, click on the UNUSED button to designate the two columns as unused. Click OK to move to the orthogonal array screen. Click OK to experiment file screen. Supply only the first eight characters of your file name. The file extension, .Q4W, is automatically added.
After design is completed, you may review the trial condition by clicking on REVIEW menu and selecting Trial Condition. Should you want to carry out these experiments, you may print some or all the trial conditions.
Result Entry Once the experiments are carried out, you will need to enter the results by clicking on RESULT menu and then, selecting Enter Result option. If your result includes multiple evaluation criteria, you will select Multiple Criteria (OEC) option. Enter results/evaluation criteria as applicable. When done entering results, perform analysis following steps 3 - 8 as described above.
[Note that it is possible to unlock the full capabilities of the DEMO software by reinstalling with your own registration number. To secure your registration/license number for immediate use, write us with your purchase order (email to Support@Nutek-us.com ]
4. Review results and click on
Graph if you wish
to view it. Click OK when done.
While in the Click on for N factors and ranks them by Severity of their presence (
While in the
for N factors and ranks them by Severity of their presence (
Click OK or Optimum button to move to the optimum screen
8. At the Optimum screen:
Questions and Answres about Qualitek-4
Qualitek-4 (QT4) Q & A
Q&A on Qualitek-4 General Capabilities:
Q. How many FACTORS can Qualitek-4 handle? A. Up to 63 factors (variables).
Q. What factor LEVELS can I use for my experiments using Qualitek-4? A. Qualitek-4 can handle 2-level, 3-level, and 4-level factors.
Q. Can Qualitek-4 help me PLAN my experiment? A. Experiment planning (Brainstorming) is an important step in the application. This step require strict a discipline to follow a logical sequence of discussions. Qualitek-4 “Plan” option provide the steps to follow and describe the thought process in details.
Q How can one DESIGN experiments with Qualitek-4? A. Qualitek-4 allows you to design your experiments two ways. In MANUAL design, you will select the Orthogonal Array from a long list of standard arrays. In AUTOMATIC design option, once you describe your factors, QT4 will select the array and assign the factors to the column.
Q. Is it possible to design experiment with NOISE FACTORS? A. You can design experiments with noise factors using the OUTER ARRAY. In addition you also have the option to set up experiments with DYNAMIC CHARACTERISTICS.
Q. What type of ANALYSIS would I be able to perform? A. QT4 allows you to perform STANDARD (using averages and standard deviations) and Signal-to-Noise ratio (S/N) analyses (six different formulae). In either approach, you will have the option to select BIGGER, SMALLER, or NOMINAL Quality Characteristic.
Q. Can I study INTERACTION using QT4? A. Yes. QT4 has superior capabilities for interaction studies. Interaction between any two possible factor combinations (of levels 2, 3, or 4) can be graphically displayed and their SEVERITY OF PRESENCE compared. You can study all possible interactions among two factors regardless of whether you reserved any columns to study them or not.
Q. Can I graph and print MAIN EFFECTS? A. Yes. Single and multiple graphs displays are available.
Q. Can QT4 test for SIGNIFICANCE after ANOVA calculation? A. QT4 allows testing for significance each factor/interaction at a time or AUTOMATICALLY, all factors at a time.
Q. Is it possible to determine the relative influence of the factors from ANOVA in QT4? A. Yes. There are standard paretoized graphs (BAR and PIE graphs) are available.
Q. Could I get meaningful INTERPRETATION of results when performing S/N analysis? A. When S/N analysis is performed, QT4 provides a built-in option to TRANSFORM the expected performance data in terms of the units of the measured value.
Q. Would QT4 compute the CONFIDENCE INTERVAL (C.I.)? A. Once the analysis is completed, QT4 allows you the option to compute C.I. at the desire confidence level. You will be able use these boundary values to validate the predicted performance at optimum by performing CONFIRMATION EXPERIMENTS.
Q. Can QT4 estimate the SAVINGS based on the performance improvements? A. Upon completion of analysis, QT4 can automatically calculate and show graphs of VARIATION REDUCTION AND expected cost SAVINGS (see sample screens http://nutek-us.com/wp-q4w.html).
Q&A on the technique:
Q. What is the Taguchi method? A. Taguchi method is a special (standardized) form of a statistical technique known as Design of Experiment (DOE). Users may refer to this subject as DOE/Taguchi. The technique is primarily used by engineers and quality assurance professionals for (1) product/process design optimization, and (2) production problem solving.
Q. What does Qualitek-4 do for users? A. Qualitek-4 helps users accomplish EXPERIMENT DESIGNS and ANALYSES of results. When applying Taguchi technique, Qualitek-4 can save time and money.
Q. What kinds of activities use the DOE/Taguchi technique? A. Product and process design activities of all kinds of manufacturing industries can benefit from DOE/Taguchi technique. Most current users today are from automotive, electronics, plastics, food, medicine, pharmaceutical, aeronautical, and defense industries.
Q. How does one learn about the technique? A. From seminars, self-study, application experience, co-workers.
Q. Are there books available on the subject? A. A number of texts are available on the subject. To see a complete list of reference, visit Nutek web site (http://Nutek-us.com/wp-txt.html ). Also, in the Internet, search for sites under key words: TAGUCHI, SEMINAR, TEXTBOOK, SOFTWARE, CASE SUDY, etc.
Q. Who is the author of Qualitek-4? A. Dr. Ranjit Roy of Nutek, Inc. is the designer and author of Qualitek-4. The software follows the same design and analysis format taught by him in his seminars and as described in his textbooks.
Q. Is qualitek-4 easy to follow even if I have not read any books by the author or taken Nutek’s seminar? A. Qualitek-4’s capabilities and ANALYSIS steps follow a common sense (natural) approach. Perhaps this is why over 90% of its satisfied users are not those who have been through Nutek seminar on DOE/Taguchi.
Q. Is TRAINING on the technique and the software available? A. Dr. Ranjit Roy of Nutek, Inc. provides seminar/workshop on the application of the technique (http://Nutek-us.com/wp-s4d.html). This 4-day session is intended to prepare the attendees for immediate application. The attendees to this workshop also learn how use Qualitek-4 for experiment DESIGN and ANALYSIS tasks.
Q. Can I use the software for CLASSICAL DESIGN OF EXPERIMENT? A. Qualitek-4 is intended for experiments that utilize Taguchi ORTHOGONAL ARRAY. While it allows users to create their own array or modify standard Orthogonal Array, it does not check for the validity of such deviations.
Q. Does the software help users learn the technique? A. No. Although, there is a large amount of information on the technique provided in the HELP section of Qualitek-4, and available free literature, it is not intended to teach users the technique. However, educated users who are familiar with the principles will find QT4’s automatic design capabilities a dependable option.
Q. Other than attending the seminar, is it possible to call for HELP on the technique? A. Support on the application of the technique is not included in the price of the software. You may however, contact Dr. Roy (http://Nutek-us.com/wp-rkr.html ) and discuss your particular situation. and ask questions. You may also consider joining the DOE Discussion group and ask questions for other users to help you (https://groups.google.com/forum/?hl=en&fromgroups#!forum/TDA-DG ). For general experiment design tips, visit http://Nutek-us.com/wp-tip.html .
Q&A on Program Installation and License:
Q. Can I install QT4 multiple times? A. The registration number assigned to the user (displayed in the registration screen) clearly indicates single or multiple users. In case of change of system or relocation, you can use the program CD-RM to re-install the program to your new system.
Q. What does the DEMO do for me? A. QT4 demo is a FULL FEATURED WORKING MODEL. It allows you to DESIGN and ANALYZE your own experiments that use an L-8 array. In addition, the demo contains over 50 example experiments of all sizes, which you can examine and print. (Qualitek-4 DEMO is as useful to you as a new vehicle which you are allowed to drive unlimited miles as long as you stay within the city limit.)
Q. Is it possible to DUPLICATE QT4 program disks for backup? A. Yes. You may distribute the software CD-ROM freely, not the personal registration number. Without the registration number, the software will always be installed as a DEMO.
About Qualitek-4 (QT4)
The Taguchi method of experimental design is a popular statistical technique utilized by the manufacturing industry today. Qualite-4 is designed to automatically design and analyze results of Taguchi experiments. Using its enhanced design capabilities, experienced users can layout experiments in a matter of minutes. When results are entered and the type of analysis indicated, QT4 readily computes main effect, performs ANOVA, determines optimum condition, and prints presentation quality reports.
Experiment Design - To help you design your experiments, QT4 allows you to do it yourself or in automatic design option, lets you simply indicate what are your factors and levels, and then it selects the array and assigns the factors to the appropriate columns. While automatic design can handle most of your common experiment designs, the manual design option allows you to create the special designs to suit your needs. Once you are satisfied with your experiment design, QT4 readily describes the recipes for you to carry out the experiments. It also suggests the random order of conducting each of the experiments, which are described in separate pages to resemble a work order.
Analysis - The three basic steps in analysis; Main Effect, ANOVA, and Optimum studies are carried out in sequence with click of OK buttons. Analyses can be performed using Standard or S/N for Smaller, Bigger, Nominal or Dynamic Characteristics.
Miscellaneous Features - Automatic test of presence of interaction, Plot of interaction between two, three and four level factors, Least Squares quadratic curve fitting between average effects for three and four level factors, plot of Main Effects, Bar graph and Pie diagram for ANOVA results, Stacked diagram for factor contributions to Optimum, etc.
System Requirements: IBM/Compatibles,Windows 95 and later. 30 MB disk space.
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