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    希望大家在上传附件的时候,加上适当的附件内容说明。可以拷出附件内部分文字。 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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