Modern Phone Qualification

Abstract

Dianna and Fred discussing the information needed to determine how to qualify product reliability.

Key Points

Join Dianna and Fred as they discuss a listener’s question: Do you have materials that describe different reliability tests done to qualify modern smartphones?

Topics include:

• There is no reliability tests checklist for a product. Rather, we need to start with understanding what we need to know, using analyses. Then we can prioritize decisions based on risk.
• The three basic elements of qualifying devices to consider.
• Using information that’s already available to figure out what we need to know.
• We can prioritize based on analysis. FMEA is a common tool to help with what can fail and how. This can help produce meaningful action against the design or its manufacturing processes.

Enjoy an episode of Speaking of Reliability. Where you can join friends as they discuss reliability topics. Join us as we discuss topics ranging from design for reliability techniques to field data analysis approaches.

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Show Notes

There is no reliability tests checklist for a product. Rather, we need to start with understanding what we need to know, using analyses. Then we can prioritize decisions based on risk.

The three basic elements of qualifying devices to consider: regulatory, environmental conditions, and performance/functional information.

• While regulatory standards are typically a few years behind the state-of-the art, they could be a starting point. Reliability tests houses are a resource of current test capabilities but are not specific to a design.
• Environmental conditions are important to understand: where in the world it is used (leading to temperature, humidity, and other climate environments), how the device is being used, and changes in interfacing equipment.
• Performance/functional information is what we say the device is going to do.

Mobile devices are not new, so there’s a wealth of information that is available about how current designs are performing. We can use our current knowledge to investigate what we need to know.

• How is it performing right now against its current requirements?
• Compared to the current design, what components are new in this latest design? This is typically a red flag for investigating.
• Are there new or different environments for how it’s used, where it’s used, and what interfaces with it?

We can prioritize based on analysis. FMEA is a common tool to help with what can fail and how. This can help produce meaningful action against the design or its manufacturing processes.

Applications discussed: modular phones, medical devices, autonomous vehicles, and software

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Related Topics

SOR 823 Stresses and Mechanism(Opens podcast in a new browser tab)

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