Setting Up A Viable Multi-Stress Accelerated Life Test

FREE WEBINAR – February 10, 2016

Host: Ops A La Carte
Speaker: James McLinn, Senior Reliability Engineer
Time: 12:00pm-1:00pm Pacific Time
Register: gotowebinar.com

Selecting a set of stresses for accelerated life testing can be a challenge for some accelerated life tests. Determining the best set of stresses is only the start of the reliability challenge. Should one employ a combination of temperature and vibration, temperature and humidity, mechanical stress and temperature, corrosive materials and temperature, temperature cycles and vibration or some other stress combination? If one important goal of the ALT is to simulate the customer environment and thereby extrapolate the test results to the field, then selecting the best combination of stresses is important.

Not all customers have the same set of conditions in the field. Many customers experience more than two operating stresses in the field. It may be that four or more stresses may be present. Thus, selecting only two stresses will represent a compromise to field simulation. Add high levels of acceleration in each selected stress and complications arise. There may also be issues with non-linear behavior appearing in the test results.

This webinar will present approaches to selecting the best set of two stresses, showing ways to limit the test conditions and then handling some of the data analysis issues resulting from any non-linear test results. All of these considerations are important to achieving successful ALT results and then extrapolating these to the field.