Car with Crash Test Dummies


Reliability engineers may suggest environmental stress tests. There are many types of tests in an RE’s toolbox. We compare two types of commonly known tests that are used for design: ALT vs. HALT. What are the important distinctions between these two methods? What value do they each bring to design engineering? And how do they…

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HALT! Watch out for that weakest link.

HALT (Highly Accelerated Life Test) uses the weakest link mentality. We apply stresses beyond what our designs would normally see in the environment to make something fail. It’s meant to be an iterative test program where you are testing, analyzing the results, determining the root cause, fixing the design, and then testing it, again.

This blog reveals more about its roots, why you should perform HALT (or not), when in the design process it’s best (hint: really early), and who likely needs to be involved. Also understand how HALT is different from ALT.

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