As I visited technology workshops in Germany and Silicon Valley, I was struck by how many of these program-shifting products suffer from a simple but fatal flaw: set-top box fatigue.
The results show that:(1)The conditioned fatigue strength and the fatigue life of products from various plants are different although their trademark and standard used are identical.
In the field of maintenance engineering, ergonomic analysis on products is paid more and more attention, in which Human fatigue analysis takes an important part.