Articles by John Raffaldi

Software & Analysis: Good Data=Good Decisions

Measurement system analysis helps to judge whether an attribute gage is trustworthy.
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Getting Started With Design of Experiments

Getting Started With Design of Experiments Design of Experiments (DOE is an effective as a troubleshooting method because it helps understand a process in more detail. Follow these seven steps on conducting experiments.
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GR&R for Destructive Measurement Systems

Gage repeatability and reproducibility (GR&R) studies provide information on measurement system performance by analyzing measurement error from various sources.
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QUALITY SOFTWARE & ANALYSIS: Gage R&R Improves Quality and Profitability

A gage repeatability and reproducibility study can determine if a measurement system is acceptable for the required measurement.


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Charles J. Hellier has been active in the technology of nondestructive testing and related quality and inspection fields since 1957. Here he talks with Quality's managing editor, Michelle Bangert, about the importance of training.
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Quality Magazine

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2014 December

Check out the December 2014 edition of Quality Magazine for features!

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The Skills Gap

What is the key to solving the so-called skills gap in the quality industry?
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