Delserro Engineering Solutions Featured in Assembly Magazine

DES president Gary Delserro is featured in an article published in Assembly Magazine on July 9, 2021. Titled “Accelerated Life Testing,” the article discusses different types of manufacturing life testing and quotes Gary with reference to highly accelerated life testing (HALT): “Companies have reported savings in the millions after using HALT,” claims Delserro. “The test …

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HALT Testing: When Should You Perform It?

Highly Accelerated Life Testing, or HALT, is a technique used in the industry to speed up the design and test phases of product development, as well as limit the number of field failures and thus reduce warranty costs incurred by the manufacturer. HALT Testing can be a competitive advantage for companies when performed correctly and …

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Circuit Board HALT Testing Case Study

Customer Goal A customer approached DES looking to perform Highly Accelerated Life Testing (HALT) on a new circuit board design. DES and the customer agreed to test the circuit boards using DES’s traditional HALT test procedure which calls for hot/cold temperature steps followed by rapid temperature ramping, vibration steps and combined temperature and vibration stresses. HALT …

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Rapid HALT – A Cost Effective Alternative to HALT

Rapid Highly Accelerated Life Testing or Rapid HALT is a reliability test method that is used to expose product weaknesses. A Rapid HALT procedure is a modification of a Classical HALT procedure. For more information about Classical HALT procedures, refer to the following blog articles: What is HALT Highly Accelerated Life Testing and why perform …

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What Kind Of Failures Occur During HALT?

Product failures in HALT testing are defined as either the cessation of any functions or an out-of-specification condition for any performance characteristic. When a failure occurs, it is documented in DES’s HALT log. The exact time and test condition when each failure occurred is noted. If the product fails to operate, the temperature or vibration …

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What Equipment Is Used For HALT?

HALT Chambers Specialized test chambers are needed to perform a HALT. Typical HALT chambers are shown in Figure 1. The specification for HALT chambers is typically the following: Liquid nitrogen (LN2) is used to cool the air temperature in HALT chambers. This allows for very rapid temperature changes of 60°C per minute and a cold …

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What Is A Typical HALT Procedure?

HALT procedures vary from lab to lab but are typically performed similar to DES’s procedure which is summarized below. DES’s HALT procedure is divided into 5 Stages: Stage 1 – Temperature Step Stresses, Stage 2 – Temperature Ramps, Stage 3 – Vibration Step Stresses, Stage 4 – Combined Temperature &Vibration Stresses, and Stage 5 – …

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What Is HALT (Highly Accelerated Life Testing) And Why Perform HALT?

Highly Accelerated Life Testing (HALT) is a rigorous reliability test method that is used to expose product weaknesses. The goal of HALT is to proactively find weaknesses and fix them, thereby increasing product reliability. Because of its accelerated nature, HALT is typically faster and less expensive than traditional testing techniques. HALT can be effectively used …

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How a HALT Test Shows The Future

Highly Accelerated Life Testing Procedures Speeding up the process of device or circuit failure requires extreme inputs, those that are unlikely to occur during real-world use by customers regardless of the environment. Three common testing inputs are high and low temperatures, rapid cycling of the same and vibration along six-axes. In some cases, a highly …

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