Quality Exclusives

The Importance of Hypothesis Testing in Quality Management

In modern manufacturing plants, people still seldom attach importance to hypothesis testing, which they believe is merely a matter of theory. However, the application of hypothesis testing in quality management should be promoted.
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Case Studies: Cloning Crash Test Dummies

First Technology Safety Systems Inc. (FTSS, Plymouth, MI), maker of crash test dummies and computer crash simulation models for automotive, military and aerospace applications, uses the HandHeld laser scanner from NVision Inc. (Coppell, TX) to ensure the accuracy of its crash dummies.
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Case Studies: Inkjet Analysis

Trident Industrial Inkjet, manufacturer of industrial inkjet print head technology, has chosen the JetXpert system from ImageXpert (Nashua, NH) for accurate and repeatable in-flight droplet analysis.
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Off-Topic: The Pareto Principle - What You May Not Know

Born July 15, 1848, Vilfredo Pareto was an Italian economist, theorist and sociologist. Pareto is chiefly known for his influential theory of ruling elites. Also, he is generally credited as the father of a diagnostic tool used by all who apply the very rudiments of quality analysis.
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Squeezing the Most Life From a Zombie Technology

During his recent presentation at the 2009 Quality Measurement Conference, Ted Doiron of NIST called gage blocks, “a zombie technology.” He defined this as, “a dead technology given a semblance of life, but awkward and inefficient, by a supernatural force (human inertia) usually with evil (costly) effects.”
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Pre-Control May be the Solution

Ask any machinist how statistical process control (SPC) helps him manage his processes. The response is not likely to be positive. It is not uncommon for control charts to be placed around machines and other equipment, showing a history of how certain process parameters or key process characteristics (KPCs) have been performing.
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Case Studies: Design Out Vibration

A shipbuilder minimizes risk and maximizes performance through the use of engineering simulation software.
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Case Studies: The Multisensor Advantage

A medical device manufacturer saves production time by switching from manual measuring instruments to a multisensor coordinate measuring machine.
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Off-Topic: Why Map Your Process?

Efficiently managing processes is key to the success of a business. That is all the more true in this tiring economy. An early step in process management is identifying and documenting the main processes. A powerful visual tool, process mapping has been in use for many years.
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Measure Surface Texture Correctly

When measuring surface roughness, typically the average roughness, Ra, is specified. Ra is a measure of the average of the absolute value of the variation of the surface texture profile about a best-fit mean line. A typical specification for Ra may be 16 microinches, or 0.4 micrometers.
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 In honor of World Quality Month, we spoke to James Rooney, ASQ Past Chairman of the Board of Directors 2013, for his take on quality around the world.
For more information, read the ASQ Speaking of Quality column.
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