Fundamentals of Stress Screening
Stress screening, highly accelerated stress screening, burn-in, are expensive activities and to be avoided. Yet stress screening does have a valuable purpose in specific circumstances. Let’s talk about when and why you may conduct stress screening.
The environment is essentially the weather about your product, yet what about the local environment for the power supply within your product? Does the environmental set of stresses change over time? Do the stresses of assembly, transport, storage, or use pose significant risks leading to failure?
Screening of any sort is expensive. It also prone to error. It is best avoided. Yet there are instances when screening, inspecting items in some fashion to determine suitability, adherence to specification, or sorting is the appropriate course of action.
Adding stress adds cost and complexity to the process. It has the advantage of quickening the exposure of flaws, hidden defects, or imperfections. The selection of the stress is important. Selecting the wrong type and amount of stress may not hasten the objective or damage all of your screened items.
Let’s talk about stress screening including why it is such a poor practice and why it should be avoided or stopped as soon as possible. Let’s also discuss how to properly design and run a stress screening process including how to select the appropriate stress, the amount of stress, the different ways to apply stress, the assumptions and most importantly how to avoid needing to stress screen in the first place.
Bring your concerns, questions, and experience with stress screening to this discussion.
This Accendo Reliability webinar originally broadcast on 10 July 2018.
To view the recorded video/audio of the event visit the webinar page.
Daniela Forero says
Would like to have a webinar about standards that are there, Like ASTM, IEC, JEDEC. It would be nice to have a brief understanding about each of them and when to look for them? not sure if would be valuable to others.
Fred Schenkelberg says
Hi Daniela, good idea. I have a definite opinion on how to best use standards related to reliability work. And there are many uses, both good and bad of the wide range of standard out there. Watch for an upcoming webinar on the topic. Thanks for the suggestion.
Only audio recordings are available. Is there a video recording for all webinars and post it in youtube? It is better to understand with images and videos.
Fred Schenkelberg says
Yes the video is available. near the bottom of the notes for the podcast episode is a link to the video recording page of the webinar. Or you can find it directly with this link, https://accendoreliability.com/accendo-webinars/accendo-reliability-webinar-series/fundamentals-stress-screening/ Note: you will need to be logged in to the site (membership is free) to view the webinar.