Speaking of Reliability
Let us address your reliability engineering questions. Gain the experience of your peers and accelerate the improvement of your program and career.
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The Definition of Reliability and Quality
Chris and Adam discuss how the definitions of ‘reliability’ and ‘quality’ align … or differ. What are the differences? Do these differences matter for all applications? Is there merit in arguing that there is a difference? Well … the answer to each question is both ‘yes’ and ‘no.’ Confused? Perhaps listening to this podcast might help. Because we should only use definitions that help us and our organization. In a way, using a definition that makes the most sense to your organization is not only acceptable, it is necessary. And many organizations have failed because they have never understood these differences.
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HALT Versus ALT
Chris and Adam discussing HALT and ALT. What are these? HALT stands for Highly Accelerated Life Testing. ALT stands for Accelerated Life Testing. They sound very similar. But they are not. HALT is a destructive test regime. In fact, a good HALT plan will involve that product failing many times. This is done by subjecting the product to stresses (vibration, thermal cycling et cetera) well beyond actual operating stresses. Some of the failures this creates will not be relevant. That is, they will simply never occur when the product is used ‘normally.’ But many failures are relevant. And by undertaking HALT, we now have a good idea of which failure mechanisms and modes are likely to occur when it is used normally. And this information is incredibly valuable to a design team. ALT on the other hand starts with a failure mechanism you know about. And in a short period of time, you can predict how long that failure mechanism will cause your product to fail when used normally.
Still confused? Well listen to this podcast.