Case Studies

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  1. In Pursuit of Optimal Weld Parameters - The How To -

    December 2014

    This article offers a five-step method to finding the optimum or ‘best’ weld. The method detailed below utilizes a statistical tool known as the two-level factor approach. This well-tested method will assist an investigator in identifying what is to be optimized, choosing inputs for evaluation, running the tests so that statistically significant data is generated, analyzing data, and finally determining the settings for the significant inputs which result in the optimum weld.

    Authors: Chris Bertoni
    Publication: Welding Design & Fabrication
  2. Design of Experiments Validates Corn Ethanol Measurement Technology

    June 2014
    An industrial equipment supplier wanted to find the best operating conditions, as well as determine what performance its product could deliver for ethanol producers, before putting the device on the market. A DOE was run to successfully identify and validate a measurement method that has enabled the supplier to accurately evaluate the performance of the new product in a large number of plants under a wide range of operating conditions.
    Authors: Stites, Ron
    Publication: Ethanol Producer Magazine
  3. Employing Power to "Right-Size" Design of Experiments

    March 2014

    This article provides insights on how many runs are required to make it very likely that a test will reveal any important effects. Due to the mathematical complexities of multifactor Design of Experiments (DOE) matrices, the calculations for adequate power and precision (Oehlert and Whitcomb 2002) are not practical to do by 'hand' so the focus is kept at a high level--scoping out the forest rather than detailing all the trees. By example, reader will learn the price that must be paid for an adequately-sized experiment and the penalty incurred by conveniently grouping hard-to-change factors. (The article is not available on the ITEA Journal web site without membership. Click on the Download PDF link below to view the manuscript.)

    Authors: Anderson, Mark J.; Whitcomb, Patrick J.
    Publication: The ITEA Journal
  4. Innovative Solutions for Efficient Lamps: Mixture Optimization Using a DOE Approach

    March 2011

    DOE was used to determine the optimum setting conditions for three components leading to a high Hg Yield at a lower temperature.

    Authors: SAES Group
  5. Design-Expert Software Enables Z Corp Printer Design

    March 2010

    Design of experiments (DOE) solution from Stat-Ease helps Z Corporation develop its unique 3D color printers.

    Authors: Z Corp
    Publication: Product Design & Development
  6. Army Case Study: Benet Uses DOE to Reduce Time Required to Optimize Complex Design

    June 2008

    Design of experiments was used for a series of computer simulations to design a new generation of muzzle brakes. DOE saves time by reducing the amount of simulations required and makes it possible to optimize.

    Authors: U.S. Army Benet Laboratories
    Publication: Military Embedded Systems
  7. Trimming the FAT: Part II

    September 2005

    The first article, "Trimming the FAT out of Experimental Methods," presented arguments against OFAT techniques in favor of multifactor DOE. This follow-up article offers a case study that illustrates how a two-level factorial DOE can reveal a breakthrough interaction. A similar article appeared in OE (Optical Engineering) magazine.

    Authors: Anderson, Mark
    Publication: Optical Engineering
  8. Trimming the FAT out of Experimental Methods

    June 2005

    In 1969, the renowned management guru Peter Drucker predicted: "To make knowledge-work productive will be the great management task of this century."

    Authors: Anderson, Mark
    Publication: Optical Engineering
  9. Creating Superior Electroluminescent Backlighting with Mixture Design

    February 2005

    Engineers use mixture design to create thinner, whiter keypad backlighting. A slightly different version was published in Product Design & Development.

    Authors: Durel Div., Rogers Corp
    Publication: Product Design & Development
  10. Energy Project Relies on DOE

    October 2000

    Case study showing how DOE helped the National Renewable Energy Laboratory improve a solar air heater. Reprint available.

    Authors: Burnham, Richard
    Publication: Quality
  11. Statistical Technique Saves Big in Building Medical Cooler

    April 2000

    Article in Air Conditioning/Heating/Refrigeration News magazine.

    Authors: Forma Scientific
    Publication: ACHR News
  12. Designing Better Experiments

    January 1999

    This article explains what DOE is and the benefits of having DOE software.

    Authors: Owen, U.N.
    Publication: MnTAP Source
  13. Design of Experiments

    September 1997
    Industrial physicists no longer can afford to experiment in a trial-and-error manner, changing one factor at a time, the way Edison did in developing the light bulb. Available as reprint #15 (LDB-730).
    Authors: Anderson, Mark J.
    Publication: The Industrial Physicist
  14. Software Sleuth Solves Engineering Problems

    June 1997

    This article appeared in Machine Design.

    Authors: Anderson, Mark & Whitcomb, Pat
    Publication: Machine Design

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