Paul, Thank you for your suggestion. I hope these comments will be useful. Richard Haynes
Applications of the Arrhenius type equation include chemical and electrochemical reactions and many other systems such as bipolar and MOS infant mortality. Both temperature and voltage are accelerating factors(D. Cook, "Method of Determining Reliability Screens for Time Dependent Dielectric Breakdown ," Proceedings of the International Reliability Physics Symposium, IEEE, 1979, p. 1.). When using the Arrhenius type equation several variations of representations of the energy of activation are being used, such at E( energy of activation with eV units), H and F( heat and free energy of activation, both in cals or kcals-kilocals, 1,000 cals). Each means the same measure of energy, that is, the energy necessary to be supplied so the system can reach the final state. -----Original Message----- From: Parker, Thomas P (Paul) <[email protected]> To: 'Richard Haynes' <[email protected]> List-Post: [email protected] Date: Friday, July 24, 1998 8:54 AM Subject: RE: AST Tutorial on the Use of Tempature to increase Acceleration Factor Richard - Most people are used to seeing Ea for activation engery in electron volts, vs H in the Arrhenius equation. I would suggest explaining that. Many failure modes do not necessarily follow Arrhenius, especially workmanship defects and other mechanical defects. Can you be discuss the types of failure modes that this equation applies to as well as what it does not apply to. Actual experimental examples would be great. Paul > ---------- > From: Richard Haynes[SMTP:[email protected]] > Sent: Friday, July 24, 1998 3:02 AM > To: emc-pstc; accelerated-stress-testing > Subject: AST Tutorial on the Use of Tempature to increase > Acceleration Factor > > <<File: Temparrt.doc>> > Greeting Groups, > I hope this tutorial will clear up some aspects of using the temperature > to increase the acceleration Factory. > Please let me know if this was helpful so I can tell my boss. > Thanks and have a good day. > Richard Haynes > > PS The attached file is in Word 6.0 >
