Case Studies

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  1. How to Handle Hard-to-Change Factors or Components in a Designed Experiment

    February 2018
    Because interactions abound in the coatings industry, the multifactor and multicomponent test matrices provided by the design of experiments (DOE) approach is very appealing. However, carrying out DOE correctly requires that runs be randomized whenever possible to counteract the bias that may be introduced by time-related trends, such as aging of materials, increasing humidity, and the like. But what if complete randomization proves to be inconvenient or impossible? In this case, a specialized form of design called “split plot” becomes attractive, because of its ability to effectively group hard-to-change (HTC) factors. A split plot accommodates both HTC factors and those factors that are easy to change (ETC).
    Authors: Mark J. Anderson
    Publication: CoatingsTech
  2. Design of Experiments Helps Develop New Specialty Chemical Product

    June 2014
    OMG Borchers used the design of experiments method to develop a mixture experiment to screen the effects of four candidate additives. The challenge was to find a second source for an associative thickener used in a family of waterborne coatings that matched the properties of the incumbent thickener in three different classes of products with a different chemical composition than the incumbent.
    Authors: OMG Borchers
    Publication: Paint & Coatings Industry Magazine
  3. Cure for cratering: Gel coat perfected with design of experiments software

    February 2013

    Resin manufacturer Interplastic Corp. Thermoset Resins Div. (St. Paul, Minn.), a major gel coat producer, recently developed a new gel coat with the aid of Design-Expert design of experiments software from Stat-Ease Inc.

    Authors: Black, Sara
    Publication: Composites Technology
  4. Design of Experiments Helps Improve the Robustness of Off-Highway Vehicle Coating

    July 2009

    An agricultural equipment manufacturer asked Henkel to help optimize a tough coating application using DOE

    Authors: Henkel Corp.
    Publication: SAE Off-Highway Engineering
  5. DOE for Coatings

    August 2006

    This article is a basic introduction to design of experiments (DOE) for coatings formulations and processes. A slightly different version was published in the Coatings Technology Handbook, 3rd Edition

    Authors: Anderson, Mark & Whitcomb, Pat
    Publication:
  6. PROGETTAZIONE DI MISCELE PER LA PRODUZIONE DI VERNICI ALL ACQUA

    February 2005

    See a new Italian article on mixture design featuring Design-Expert software.

    Authors: Samia
    Publication:
  7. Taber Test or Oscillating Sand? DOE Improves Polycarbonate Plasma Coating Process

    March 2004

    Researchers at Exatec, LLC, determined that the oscillating sand test reveals better wear assessment information for polycarbonates. This finding has allowed the company to optimize coating processes. Requires login to view.

    Authors: Exatec
    Publication: Paint & Coatings Industry
  8. DOE Software Paints Picture of Powder Coating Defects

    April 2003

    How do you react when a defect arises within one of your top powder coating products that defies conventional problem-solving techniques? You look for answers with DOE. Published in Powder Coating.

    Authors: Morton Power Coatings
    Publication: Powder Coating
  9. Using Design of Experiments to Make Processes More Robust to Environmental and Input Variations

    February 2003

    This article explains why standard factorial designs (one array) offer a cost-effective alternative to parameter designs (two array) made popular by Taguchi. It then discusses advanced tools for robust design that involve application of response surface methods (RSM) and measurement of propagation of error (POE). Requires login to view.

    Authors: Anderson, Mark & Kraber, Shari
    Publication: Paint & Coatings Industry
  10. Achieving Six Sigma Objectives for Variability Reduction in Coating Formulation and Processing

    November 2001

    Cover story from Paint & Coatings Industry. November 2001. Requires Login to view.

    Authors: Anderson, Mark & Whitcomb, Pat
    Publication: Paint & Coatings Industry
  11. The Next Generation in Weatherable Hardcoats for Polycarbonate

    June 2001

    This paper received the Best Paper Award at the International Coatings for Plastics Symposium, June 4-6, 2001, in Troy, MI. Paint & Coatings Industry. June 2001. Requires Login to view.

    Authors: General Electric Silicones
    Publication: Paint & Coatings Industry
  12. Design of Experiments Increase Hot-Ink Roller Impressions (and Perceptions)

    April 2000

    Published in the May 2000 issue of American Ink Maker and in a web exclusive for PCI Magazine. Requires Login to view.

    Authors: Coding Products, ITW
    Publication: Paint & Coatings Industry
  13. Computer-Aided Tools for Optimal Mixture Design

    November 1999
    Powerful desktop computer tools now make it easy to optimize paint formulations.
    Authors: Anderson, Mark & Whitcomb, Pat
    Publication: Paint & Coatings Industry
  14. Computer-Aided Tools for Optimal Mixture Design (alternate version)

    November 1999

    A somewhat different version of the article above.

    Authors: Anderson, Mark & Whitcomb, Pat
    Publication:
  15. Computer-Aided Design of Experiments for Formulations

    June 1997

    A somewhat different version of this article appeared in Modern Paint and Coatings.

    Authors: Anderson, Mark & Whitcomb, Pat
    Publication: Modern Paint and Coatings

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