100-Metodos-de-Qualidade-Total

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ANALYTICAL METHODS 101 Method 40 Minute analysis Purpose To estimate the survival period of a particular product unit under certain conditions, using a simulated experimental environment. When to use When the duration of the testing period is predetermined and some of the test units could survive the duration of the experiment. In general, the resulting data are expressed in the continuous mode with the specification of a failure or a survival for the whole testing period. Such an analysis requires the assumption of the failure distribution of the unit. A method for minute analysis does not require such an assumption. How to use In a testing experiment, first break down the test period into regular intervals of a specific duration called minimum units (,minutes') . The duration of the minimum unit depends on the problem under investigation. An experiment was conducted to investigate in which minimum unit the end of the life of a unit took place. The data are used in binary form with '1' ('0') signifying that the test unit will still be functioning (not functioning) by the end of a particular cycle. The analysis of variance technique is performed in the usual way appropriate for binary data. Benefits It does not require the assumption that the failure distribution of the unit follows a complicated (Wei bull-type) probability distribution. Examples In order to improve the durability of fluorescent lamps, the following factors were selected for study: A Additive (2 types) B Fluorescent agents (2 types) C Coating method (2 types) o Tube-washing method (2 types)
102 100 METHODS FOR TOTAL QUALITY MANAGEMENT For each of the eight combinations, the durability of two lamps was tested. The whole testing period was ten days. Every two days, how many lamps were still functioning was recorded. An analysis of variance table can be constructed using the data from this experiment. To determine the best operating conditions for the paper-feeding phase at high speed of an off-set duplicator, the following four factors at two levels were selected. Description Vacuum header type Feed can type Master cylinder can Air rifle selling Level Normal Light weight Normal Smoothed Smoothed Normal Normal High The data will represent the number of paper sheets successfully fed through the duplicator at each test. After statistical analysis for each of the eight levels, the best operating conditions for paper feeding can be obtained. Reference N. Logothetis and H. Wynn (1991) Quality through Design. Oxford: Oxford Science Publications.
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100 METHODS FOR TOTAL QUALITY MANAG
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PREFACE An essential part of the de
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THE ROLE OF TQM METHODS Total quali
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LIST OF METHODS (BY CATEGORY) Manag
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MANAGEMENT METHODS Method 1 Accepta
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DATA COLLECTION, ANALYSIS AND DISPL
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REFERENCES Akao, Y. (1991) Hoshin K
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INDEX acceptable quality level (AQL
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100-Metodos-de-Qualidade-Total

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