Chapter 17. Systematic Failures, Especially Software
The techniques dealt with so far in this book apply largely to catastrophic hardware failures. The term ‘random hardware failures’ covers the constant failure rate part of the bathtub curve and the term ‘dependent failures’ embraces the common causes dealt with earlier.
It was mentioned in Section 1.3 that, due to the complexity of modern engineering products, system failure does not always involve a single component part failure. More subtle factors, such as the following, often dominate the system failure rate:
• failure resulting from software elements
• failure due to environmental factors
• failure due to ambiguity in the specification
• failure due to timing constraints within the design
• failure ...
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