Throughout this series, only analytical
methods have been shown. When we attempt to solve problems,
calculations are generally used to help verify our assumptions. Our
assumptions logically result from analyzing the deluge of data
assembled from various sources. The following procedure helps make
sense of the many pieces of information.
The problem is that of “Case 1: The
Fatigued Motor Shaft.”
1Here a “V”-belt provided the connection between an
electric motor and an agitator. The motor shaft failed at a
snap-ring groove, and a small fire was caused by the failure
incident. Data were gathered and assembled into the following
problem-solving chart.
2
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