Do quality testing solutions differ depending on where they might be injected throughout the product lifecycle? We typically use similar solutions throughout the entire lifecycle. The hardware and system configuration might change some.  For example, design and prototype testing are normally more lab-based and do not require the automation of a production test, at the opposite end, the field-testing process is normally more portable.  Across the board the algorithms are mostly the same except for structural changes due to mounting and difference in boundary conditions. For example, mounting the unit under test on a shake table is different than how it mounts on an assembly line pallet and definitely different than being installed in a vehicle.  The goal is to get all of the boundary conditions the same, but this might not be practical for complex structures.

End of production testing is important; but it’s just one area when quality should be assessed. Implementing quality testing from concept through production helps to ensure that flaws are identified as the product passes through each product development stage gate.  This significantly reduces the number (and associated cost) of rejected parts being tossed on the scrap pile.  But what about products with inherent flaws that do not surface until the product is in use? 

The Signalysis portable test system allows users to isolate problem areas after the product reaches the final customer.  This enables the problem in hand to be quickly identified and corrected while relaying vital information back to the supplier for the design of next generation products.