The Applied Technical Services Family of Companies (ATS FoC) provides HALT/HASS testing services to help manufacturers identify design vulnerabilities during development and detect production defects before market release. We offer thermal step stress, rapid thermal cycling, multi-axis vibration step stress, and combined environment testing, using custom fixtures and providing comprehensive reports. Each program begins with HALT in the development phase, where we test samples beyond expected use to determine operational and destructive limits. After addressing weaknesses, we use these results to develop a HASS profile that applies controlled stress to production units, allowing us to detect latent defects before shipment.
What Equipment Is Used in HALT/HASS Testing?
HALT/HASS testing uses specialized chambers that subject products to rapid temperature changes and broadband vibration. The primary equipment includes:
- HALT/HASS chambers with rapid thermal ramping, typically cooled with liquid nitrogen
- Multi-axis random vibration tables that excite products in six degrees of freedom
- Custom fixtures and air ducting that carry vibration and thermal energy into the product
- Thermocouples, accelerometers, and functional monitoring systems that track performance under stress
We tailor each test setup to ensure stresses target the components most susceptible to failure.
Our HALT/HASS Testing Services
HALT and HASS are process-driven methods, not fixed standards. We customize each program to your product and application. Our services include:
- Hot and cold thermal step stress
- Rapid thermal cycling
- Vibration step stress
- Combined thermal and vibration stress
- HASS profile development and production screening
- Failure documentation and detailed reporting
We support manufacturers in the electronics, aerospace, defense, automotive, and medical device industries, and can test products from individual circuit boards to fully assembled systems.
Why Should Manufacturers Invest in HALT/HASS Testing?
Identifying failures in the lab is far more cost-effective than discovering them in the field. HALT detects design weaknesses early, allowing for timely and economical modifications. Accelerated stress testing delivers rapid results with fewer samples, reducing validation timelines. HASS ensures manufacturing consistency by detecting issues such as weak solder joints or marginal components before delivery. Together, these methods help reduce warranty claims, protect your brand reputation, and improve product reliability. Our detailed reports provide engineering teams with objective data to prioritize improvements and guide design decisions.
Request HALT/HASS Testing
To learn how HALT/HASS testing can improve your product and production reliability, contact us at +1 (888) 287-5227 or complete our online request form with your product specifications, expected operating environment, and desired schedule. Expedited services are available. Our team will recommend the most suitable testing program and provide a tailored proposal.
