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AcceleratedTestingUsingHALT

WhyAcceleratedTesting?
•Theenvironmentsaremeanttogivehighlevelsofstresstoprecipitatefailuresinlesstimethaninstandardtesting.
•Oncethefailureshavebeendetected,correctivedecisionscanbemade.
•Thisprocessaddstoproductrobustness.
•Testtimeiscompressedleadingtoearlierproductmaturity.
•Acceleratedtestingisusedtoquicklydetectanyinherentdesignandmanufacturingflaws.

SomeoftheManyBenefitsofAcceleratedTesting
4
•Fastdesignandprocessmaturation
•Greatlyreducedmanufacturingscreeningcosts
•Fastercorrectiveactionfordesignproblems
•Reducedproductioncosts
•Earlierandmatureproductintroduction
•HigherMTBF
•Reducedwarrantycosts
•HappyCustomers

WhatisHALT?
•HighlyAcceleratedLifeTesting
•Thisistheprocessbywhichaproductistested,usuallyinitsdesignorprototypestage,usingtemperature,vibration,andthecombinationofenvironmentstotestuntilthepointoffailure

WhatCanHaltDo?
TheAcceleratedLifeTestcanshowyou,ofteninamatterofhours,howaparticularproductwillstanduptoyearsofoperationallife.

How?.Youcansubmityourproducttoextremesofenvironmentalstress.Eachtypeofstressidentifiesspecificdefectsthatmaybemissedbytraditionaltestingmethodsandequipment

Why?
•Whenthesedefectsarespeedilyidentifiedintheproductdevelopmentstage,ithelpstoreducedevelopmenttimeandproduceshigherqualityproduct.
•Shorterdevelopmenttimemeansshortertimetomarket,somethingthatcanmakeahugedifferenceinsales.
•Higherreliabilityduringtheoperationallifespanreduceswarrantycostsandgeneralin-the-fieldrepaircosts.
•Italsobringsaboutcustomersatisfaction,somethingthat’sinvaluableinatougheconomicclimate.

Goal?
•Reliabilityisakeyfactorforproductdurabilityandforcompetitivenessintheglobalmarketplace.
•Boththeuserandthemanufacturergainfromhigherreliability.
•Theuserhasaproductthatdoeswhatitissupposedtowhenitissupposedtowithoutfailure.
•Themanufacturerhasloweredproductioncostsandfewerproductreturns.
•Everyonewins!

WhatisReliability?
•Thebestquantitativemeasureoftheintegrityofadesignedpart,component,productorsystem
•Theprobabilitythatparts,components,products,orsystemswillperformtheirdesigned-forfunctionswithoutfailureinspecifiedenvironmentsfordesiredperiodsdatagivenconfidencelevel
•Theoreticalandpracticaltools
–DimitriKececioglu,ReliabilityEngineeringHandbook

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