HALT vs. ALT: Which Testing Technique Should You Use?

Product testing is an essential part of manufacturing. Not only is it important to figure out if your product will be fully functional, but you may find yourself needing to determine when and how the product will fail or malfunction.

When it comes to stressing your product to determine its limits, you’ll probably find yourself turning to either highly accelerated life testing (HALT) or accelerated life testing (ALT). The question comes down to which of the two methods is better for your particular product.

With the two acronyms sharing three letters, it’s no wonder there’s some confusion surrounding the differences between HALT and ALT procedures. The two methods accomplish different objectives, and they can both be highly beneficial when you work with the right testing service. Functioning either separately or in tandem, HALT and ALT product testing can help you determine the longevity and the ultimate success of your product down the line.

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HALT/HASS Testing Guide: What Is HALT/HASS Testing?


Creating a reliable product that is easily manufactured, handled and shipped that is also of service to your customers for a sufficient amount of time isn’t an easy task. Innovation is at an all-time high and customers expectations are only getting higher. The market demands manufacturers to release new high-quality products that last at an increasingly higher rate.

Traditional test methods often take several weeks or upwards of many months to find any lackluster components of a product’s design. Even then, results are not guaranteed. Identifying these inferiorities is essential so that they can get fixed before they become expensive field issues.

Newer methods of product reliability testing can drastically shorten the amount of time it takes to find these weak points and can reach completion in as little as a couple of hours. Among the highest rated testing methods are HALT and HASS testing. Understanding what HALT/HASS testing is and applying these types of testing will allow improved product reliability that frees up time for other endeavors, and in turn, increases the revenue your company will be able to bring in.

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The HALT/HASS Testing Procedure: How It Works

The halt/hass testing procedure: how it works

Failure is not an option — except when you’re enacting accelerated stress tests to push your products to their operating limit. In that case, failure is not just inevitable. It’s invited.

The HALT and HASS testing processes stand in a realm of their own when it comes to finding and identifying product defects. These two models are cousins in a broader strategy to better understand the operating margins of goods before they hit the market and before any potential defects can cause widespread field and brand mayhem.

It’s not just in a manufacturer’s best interest to employ HASS and HALT procedures to build best-in-class products. It’s about the reliability and integrity of the design itself across its entire lifecycle. Procuring HALT and HASS testing for your products are essential to realizing what true product performance is — and how you can deliver it. Let’s see how.

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