Lifetime estimation in the acceleration test with high humidity high pressure and high temperaature

[Erica]

Hi all,

I met a requirement to reduce the acceleration test time. One method is to add more stresses on the test components. I intend to use the high temperature, high presuss and high humidity. Is anybody know the acceleratiion relation about the humidity and pressure?

[Pantelis]

For humidity I would use an Eyring relationship (see http://www.weibull.com/AccelTestWeb/eyring_relationship_chap_.htm).
For pressure, what is pressure doing. If it causing fatigue I would use a power relationship (see http://www.weibull.com/AccelTestWeb/inverse_power_law_ipl_relationship.htm)

[Aman Khan]

Hi Pantelis,

I attended your seminar Life Data Analysis last year at San Diego, excellent teaching. I would like to use Weibull++ for voltage and temperature acceleration to cause failures. Now, if my acceleration factor is 10 (Using Erying), how do I use it in Weibull++.

Thanks
Aman