For over 40 years, ERI instructors have been helping engineers increase the long-term reliability of their products by facilitating and educating them in reliability development testing. Additionally, screening techniques are initiated to ensure production hardware does not leave the manufacturer with undetected defects.
HALT – What are the weak points of this design which will fail first and limit the long term reliability of this product? Finding out is the task of HALT – Highly Accelerated Life Testing. HALT should be performed before equipment goes into production. HALT is like a time machine – telling you what will happen in the future.
ESS – How can we prevent production hardware from being shipped to customers with latent (undetected) defects? These failures, which will not show up until weeks or months after shipment will seriously impact our warranty costs and our reputation. ESS (Environmental Stress Screening) uses environmental conditions such as temperature cycling and random vibration as tools to convert these latent failures into patent (apparent) failures before the hardware ever leaves the manufacturing facility.
HASS – HASS (Highly Accelerated Stress Screening) is a leading-edge type of ESS. It uses the same test equipment as HALT and the same concepts. Rapid thermal cycling and omni-axial vibration capture more latent failures in a much shorter time span then more traditional types of ESS.
Don’t engineers study reliability in college? Most such university instruction deals with mathematics and theory. Little if any instruction deals with the practical matters that many engineers need, and for which ERI is justly famous.
Here are outlines whose variations have been given on site to equipment manufacturers in numerous industries.
Let us know if your organization would like a proposal for onsite training. Or if an individual would like to join one of our open courses.
Contact us for pricing and information at:
(805) 456-4274 or
“This was a great course. I found the areas of attaching test articles to shakers to be very informative and helpful, providing me with the information to design fixtures and test products better. I got a lot out of the class. Thanks Wayne!”
“From the “wet behind the ears” to the “well beyond his years”, Tustin’s book is a great resource and learning tool for anyone involved, or planning to be involved, with dynamics testing of any kind. Thanks!”
Equipment Reliability Institute (ERI) offers specialized technical short course training in Shock and Vibration Testing, Climatics Testing and MIL-STD-810 Testing. Testing classes are applicable to all commercial, military and aerospace requirements.
Military Standard 810 (MIL-STD 810) @NTS Chicago March 27-30, 2023
Fundamentals of Random Vibration and Shock Testing @NTS Silicon Valley, CA November 7-9, 2023