On the manufacturing shop floor, the principle of "value comes from the production of parts rather than charts" crucially applies when using practical statistical process control (SPC). The production worker should need to enter only a sample's measurements to get immediately actionable information as to whether corrective action (e.g., as defined by a control plan's reaction plan) is necessary for an out-of-control situation, and should not have to perform any calculations, draw control charts, or use sophisticated statistical software. This book's key benefit for readers consists of spreadsheet-deployable solutions with all the mathematical precision of a vernier along with the simplicity of a stone ax. Traditional SPC relies on the assumption that sufficient data are available with which to estimate the process parameters and set suitable control limits. Many practical applications involve, however, short production runs for which no process history is available. There are nonetheless tested and practical control methods such as PRE-Control and short-run SPC that use the product specifications to set appropriate limits. PRE-Control relies solely on the specification limits while short-run SPC starts with the assumption that the process is capable-that is, at least a 4-sigma process, and works from there to set control limits. Cumulative Sum (CUSUM) and exponentially weighted moving average (EWMA) charts also can be used for this purpose. Specialized charts can also track multiple part characteristics, and parts with different specifications, simultaneously. This is often useful, for example, where the same tool is engaged in mixed-model production. Readers will be able to deploy practical and simple control charts for production runs for which no prior history is available and control the processes until enough data accumulate to enable the traditional methods (assuming it ever does). They will be able to track multiple product features with different specifications and also control mixed-model applications in which a tool generates very short runs of parts with different specifications. The methods will not require software beyond readily available spreadsheets, nor will they require specialized tables that are not widely available. Process owners and quality engineers will be able to perform all supporting calculations in Microsoft Excel, and without the need for advanced software.

This book provides a comprehensive overview of the historical development of color science, told through the stories of more than 90 of the most prominent figures in the field and their contributions. The text comprises an extensive set of biographical essays about pioneering scientists in the field of color science, describing their most significant achievements and explaining how their findings influenced the general understanding of color. Grouped by historical period, each part is prefaced with a short introduction that sets the essays into context and helps the reader appreciate the background and the importance of the contributions made. Beginning with classical Greece and the works of Plato and Aristotle, the book goes on in the second part to describe the advances made by Islamic scholars such as Ibn al-Haytham between the 10th and 15th centuries. The third part covers contributions from Roger Bacon and Theodoric of Freiberg in the same period. Part four includes discussions on color formation and visual perception for a time period from about the 16th to the 18th centuries encompassing the Age of Enlightenment. This part addresses the works of nineteen pioneers including Descartes, Boyle, Newton, Goethe, Lambert, Purkynje, Runge, Dalton, Young and Chevreul. The final part is the largest section of the book and covers the most recent discoveries and contributions from pioneers born after 1800 and includes over 60 essays. Among the pioneers listed in this chapter are Nobel laureates, vision scientists including Helmholtz, and Hering, and many other notable color pioneers such as Munsell and Land. This part of the book also includes essays on contemporary figures in color science including Adams, Boynton, Crawford, Hardy, MacAdam, Ostwald and Wyszecki and reviews their contributions to this dynamic field. A useful reference for color scientists, science historians, artists and others, Pioneers of Color Science offers a fascinating insight into the development of color science and the nature of scientific advancement.

This book addresses the problems in the dyeing of polyester textile materials in various forms and provides an overview of various textile operations for polyester. It presents various key steps and critical factors involved in the production of dyed polyester textile materials.