-----Original Message----- From: Richard Haynes <[email protected]> To: Parker, Thomas P (Paul) <[email protected]> Cc: accelerated-stress-testing <[email protected]>; emc-pstc <[email protected]> List-Post: [email protected] Date: Tuesday, July 28, 1998 3:18 PM Subject: Re: AST Tutorial on the Use of Tempature to increase Acceleration Factor
>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]> >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 >> > > > >
