HALT/HASS
HALT / HASS
TÜV Product Service undertakes HALT (highly accelerated life testing) and HASS (highly accelerated stress screening) for manufacturers. We have been performing HALT testing in the UK since 1995 and have acquired considerable experience in this specialist testing technique.
Highly Accelerated Life Testing (HALT) is a process to detect and rectify weaknesses in a product. HALT is ideally used in a products design phase. However a HALT can be beneficial for finding product weaknesses at any point in a product’s life.
Product reliability can be greatly improved by performing a root cause analysis of the failures precipitated during a HALT and then incorporating pertinent product improvements.
The intention of HALT is to rapidly improve product reliability at an early stage in a product’s life and consequently reduce costly in-field failures and warranty claims.
The HALT process involves progressively higher stress levels induced by low and high temperature step stress, rapid temperature transitions, vibration step stress and combined thermal and vibration stress environments.
Throughout the HALT process, the intent is to subject the item under test to stimuli well beyond the expected field environments to determine its Operating and Destruct limits.
Any Operating and Destruct limits discovered during HALT can be used, to develop an effective Highly Accelerated Stress Screen (HASS) for manufacturing. HASS will quickly detect any process flaws or new weak links without taking significant life out of the product. The HASS process will ensure that the reliability gains achieved through HALT will be maintained in future production.
We offer a bespoke programme that is designed to maximise the results for our clients. This includes conducting meaningful HALT / HASS testing that gives accurate information about how the product will respond during the manufacturing process. HASS testing can confirm the unit is robust and will not fail in the short-term, thus reducing warranty claims.
In addition to expertise in HALT/HASS testing, TÜV Product Service provides a full range of testing, certification, consulting and training solutions with specific aerospace experience in:
| Benefits of using TÜV Product Service for HALT/HASS testing |
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