Highly Accelerated Stress Screening
The Highly Accelerated Stress Screening (abbreviated HASS , English for sorting test in the case of greatly increased stress , also known as rapid stress test ) is a test with the aim of intensively testing preferably electronic assemblies during production in order to uncover initial errors (see bathtub curve , period I ) to be able to.
Test methodology
Similar to the Highly Accelerated Life Test (HALT for short), individual or all manufactured parts are subjected to a short, intensive test with temperature changes and vibration . The test severity must be chosen so that good parts are not destroyed, but defective parts can be reliably detected and separated.
The preloading of the parts is accepted in favor of a reduction in initial failures (at the customer's) and a correspondingly increased reliability .
See also
- Highly Accelerated Life Test (HALT) is a qualitative test procedure for electronic and electromechanical assemblies during the development phase, with the aim of increasing reliability.
literature
- Gregg K. Hobbs: HALT and HASS - Accelerated Reliability Engineering . Hobbs Engineering Corporation, Westminster, Colorado 2005, ISBN 0-615-12833-5 .
- Harry W. McLean: HALT, HASS, and HASA Explained - Accelerated Reliability Techniques . Amer Society for Quality, 2009, ISBN 978-0-87389-766-2 (Revised Edition).