Selected articles from the June 2005 issue available online:

Die Basics 101: Part II

June 14, 2005

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Figure 1EmbossingAll forming operations deform sheet material by exposing it to tension, compression, or both. Most part defects, such as splits and wrinkles, occur in forming operations. Successful sheet metal forming relies heavily on the metal's mechanical properties. The metal being formed must...

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How sleep deprivation affects work performance

June 14, 2005

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The U.S. Department of Labor's Bureau of Labor Statistics reported that in 2003 the average U.S. male slept 8.48 hours in a 24-hour period. The average U.S. female slept 8.65 hours. While both averages surpass the recommended eight hours for adults, recent studies indicate that the vast majority of...

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Tube Hydroforming Design Flexibility—Part VIII: Dimensional Stability

June 14, 2005

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Whether they are producing automobiles or hydroforming press parts, designers, manufacturers, and assembly personnel are very concerned about dimensional stability. Surfaces and holes must be located in a specified range and smaller is better. Concern escalates as the drive to improve quality and reduce build tolerances and problems increases.

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Fatigue Failures

June 14, 2005

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Fatigue causes the majority of mechanical element failures in structures and machinery. It is important to understand the causes of the failure and how to prevent or repair it.

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The blades of Don Fogg—a cut above

June 14, 2005

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This 11.375-in. blade was forged from 1095 steel; the habaki* is made from 40 percent shibuichi, gold-plated nickel silver seppa, and Damascus tsuba.*See glossary at the end of the article for swordsmithing terms. Photo courtesy of Don Fogg.What is it about forged and polished steel sharpened to an...

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