学科分类
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8 个结果
  • 简介:Thethermalstressofthequartzoscillatormodulepackagingisinvestigatedusingdistal-im-agecorrelationmethod(DICM),andtheexperimentalresultsaregiven.Underthequartzoscillatormodulepackaging,thequartzoscillatorandtheFe-Sn-Cualloyframearejoinedtogetherwiththeelectroconductiveadhesive(PI),andtheelectroconductiveadhesiveneedstobecuredtwiceat150℃and275℃respective-ly.AsthequartzoscillatorandtheFe-Sn-Cualloyframehaveadistinctdifferenceinboththermalexpansioncoefficientsandmechanicalpropertiesandinprocessofpackagingtemperaturerisesordrops,thethermalstressisyieldedeasily.Whiletemperaluredrops,thenormalstressatthequartzoscillatoredgeisatensilestress,whichcanmakethequartzoscillatorfracture.

  • 标签: digital-image correlation method(DICM) thermal stress micro-zone
  • 简介:Inthispaper,theout-of-planedeformationofsiliconsurfaceofDirectChipAttachment(DCA)assembly,underthermalloading,wasmeasuredinreal-timebyTwyman/Greeninterferometry.Thecontourmapsoftheout-of-planedisplacementfieldsofsiliconsurfaceunderthermalloadingandcyclingofvarioustemperaturewereobtained.Experimentalresultsshowthattherelationbetweentheout-of-planedisplacementandtemperatureisnonlinearandvarieswithtempera-turecycling,duetononlinearmechanicalbehaviorofthematerialsusedinelectronicpackaging.Acomparisonoftheout-of-planedisplacementfieldsofsiliconsurfacemeasuredbyT/Ginterferometryinreal-timeandreplicatingtechniqueofhightem-peraturespecimengratingofmoireinterferometrywasmade.

  • 标签: ELECTRONIC PACKAGING THERMAL DEFORMATION Twyman/Green INTERFEROMETRY
  • 简介:二个小尺寸的包裹方法,基于的包裹方法和plating黄金基于的薄不锈钢试管为纤维布拉格包装方法栅栏(FBG)温度传感器,被设计。在环境温度between203K和243K的FBG温度传感器的特征被调查。温度的功能试验性地被检验的FBG温度传感器的波长。处于相同条件的二个不同small-sizepackage传感器的实验结果与对方相比。传感器的传播光谱在273K和213K的温度被分析。温度传感器的敏感因素是导出的经分解并且被实验验证。到thewavelength温度曲线的线性适合被执行。

  • 标签: 不锈钢管 BRAGG光栅 FBG 低温 温度传感器
  • 简介:Inordertoachievesustainableutilizationofnaturalresources,saveenergyandprotectenvironmentandecosystem,itisimportantforaregionoranationtodevelopandimplementaviablewasterecyclingmodelfromboththeoreticalandpracticalpointofview.Somepackagingrecyclingmodelsoperatedindevelopedcountriesareintroducedinthisarticle.Aluminiumcanrecoveryandrecyclingisemphasized.Costeffective,economicandenvironmentalbenefitofdifferentmodelsarecomparedandanalyzed.Theresultshowsthatallrecyclingmodelshavetheircharacteristicsduetotheinitialpurposeofrecoveryandthesituationoftheimplementingcountry.However,allthemodelscontributetothereductionofmunicipalsolidwastedisposalandresourcesconservation.

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  • 简介:Inthispaper,anovelinterferometricmethodwithawiderangeofsensitivities,calledholographyquasiprojectionmoire,isproposed.Itcombinesthefeaturesofthevariateddoubleprojectionmoiremethodandtheholographicinterfer-ometrymethod.Thistechniqueisusedtostudythefailuremodesofmicroelectronicpackagingmodules.

  • 标签: HOLOGRAPHY QUASI PROJECTION MOIRE sensitivity failure
  • 简介:励华联合包装展(PACKAGING2006)是一次涵盖包装各个环节的超级综合展览会.展会将汇集全球包装行业巨头,集中展示国际和国内食品、医药、饮料和日化等领域的最新包装机械、包装创新方案和包装工业的相关全套解决方案.包括利乐、怡乐、中亚、西得乐、SIG科柏拉斯、西帕、康湃、珐玛珈、依玛士、马肯、多米诺、沛鑫等国内外知名包装供应商纷纷参展,展会预计聚集350家展商.PACKAGING2006将成为中国最具规模、最有影响力的展览会之一.

  • 标签: 国内首创 查询系统 包装行业 包装机械 包装工业 创新方案
  • 简介:因此,员工们应该确定有关维护的管理工作依照正确的步骤进行,并由授权人员监督维护全过程。授权人员要保证维护工作可以正式开始,维护工作结束后工厂可以恢复生产。通常,在开出作业许可证之前,必须先有一个锁定程序。为了保证该证明的有效实施,必须以书面形式,进行清楚无误的表述,并告知负责监督和从事该项工作的人员,在正式开始维护工作之前如何保证安全。此外,该证中还应该列出工厂正常运行过程中,为确保安全的注意事项,以及正常生产恢复之前和作业许可证取消之前的必要程序。

  • 标签: 瓦楞纸箱生产行业 安全管理 维护安全体系 操作手册 英国瓦楞包装协会