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1、Concept Selection Top Ten Wants概念选择前十的希望概念选择前十的希望6、露露凝凝无无游游氛氛，天天高高风风景景澈澈。7、翩翩翩翩新新来来燕燕，双双双双入入我我庐庐，先先巢巢故故尚尚在在，相相将将还还旧旧居居。8、吁吁嗟嗟身身后后名名，于于我我若若浮浮烟烟。9、陶陶渊渊明明（约约365年年427年年），字字元元亮亮，（又又一一说说名名潜潜，字字渊渊明明）号号五五柳柳先先生生，私私谥谥“靖靖节节”，东东晋晋末末期期南南朝朝宋宋初初期期诗诗人人、文文学学家家、辞辞赋赋家家、散散文文家家。汉汉族族，东东晋晋浔浔阳阳柴柴桑桑人人（今今江江西西九九江江）。曾曾做做过过几几年年
2、小小官官，后后辞辞官官回回家家，从从此此隐隐居居，田田园园生生活活是是陶陶渊渊明明诗诗的的主主要要题题材材，相相关关作作品品有有饮饮酒酒、归归园园田田居居、桃桃花花源源记记、五五柳柳先先生生传传、归归去去来来兮兮辞辞等等。10、倚倚南南窗窗以以寄寄傲傲，审审容容膝膝之之易易安安。Team 11:Ultrasonic MixerTeam Members:Lihong Xu-IntroductionKatie Kaser-Concept GenerationJoanna Pirnot-Concept SelectionMoshe Solomon-ScheduleSponsor:Fraunhofer
3、 USAAdvisor:Dr.Michael KeefeMechanical Mixers Size Cost Wear Contamination MaintenanceMission:Design a non-mechanical mixer for homogenizing powder injection molding feedstock by April 1999Approach:Identify wants and constraintsBenchmark previous technologyGenerate set of conceptsSelect best concept
4、Execute design via best engineering methodologyCustomersSponsor-FraunhoferMixer suppliersMisonix Inc.Ultrasonic consulting companiesAdvanced Sonic Processing SystemsAnyone involved in powder injection moldingWants&ConstraintsTop 5 WantsTemperature ControlLow Contamination LevelEase of cleaningVariet
5、y of materialsLow Cost ConstraintsCompletion by April 1999Produce homogenous mixtureNon-Mechanical DesignSafetySystem BenchmarkingMechanical MixersHigh shear mixersStatic mixerPump/internal obstacle mixer(Sonolater)Ultrasonic mixersProbe-typeExternal sound sourceMetricsWantTemperature controlLow con
6、tamination levelHandle variety of materialsMetricTemperature control rangePercentage contaminantsViscosity rangeFunctional&Ultrasonic BenchmarkingFunctionsHeatingMixingCoolingUltrasonicsUltrasonic generatorsTransducersTarget ValuesMetricTemperature control rangeViscosity rangeEase of cleaningTarget
7、Value0 to 200 degrees CUp to 1000 Pa*sAbility to DisassembleCritical FunctionsFeedingHeatingMixingCoolingRemovalConcept GenerationProbe Type Ultrasonic mixerOpposing Sound SourcesRotating MixerSeparate heating/mixing chamber Hexagonal tube mixerConcept 3:Rotating MixerWorking Model(Materials)a high
8、intensity ultrasonic processormanufactured by Cole Palmerpower supply of 600 Watts 1/2 inch diameter probecapable of mixing large volumes microtip capable of more intense mixing,but a smaller volumeultrasonic bathbeaker-mixing vesselhot plate-heating sourceAluminum oxide,polyethylene,and paraffin wa
9、xHigh Intensity Ultrasonic ProcessorWhat did we learn?Ultrasonic is a significant source of heatHeating and mixing should be as concurrent as possibleThe ultrasonic bath was not an effective method to transfer energy to the polymer resign and aluminum oxide.A system incorporating a probe is subject
10、to extensive contamination and wear on the probe.Ultrasonics are capable of mixing solid powders in a polymer resin.On the macroscopic level a homogenous mixture was achieved Critical Functions(Review)FeedingHeatingMixingCoolingRemovalEvaluation of Critical FunctionsConcept Concentration1(probe type
11、 mixer)Mixing2(opposing sound sources)Mixing3(rotating mixer)Heating and Mixing4(separate heating and mixing)Heating5(hexagonal tube mixer)ALLConcept SelectionTop Ten WantsWantsMetrics1 Suitable temperaturecontrol knobstemp of the material 2 avoid contamination due%contaminants in the to abrasion an
12、d outside sourcesproduct due to abrasion%contaminants in the product due to outside sources3 Easy to cleanability to disassembleability to clean by handability to keep material warm while cleaningWantsMetrics4Variety of materialviscosity5Reasonable costcost significantly less than a mechanical mixer
13、6Produce a measurable Output/hourquantity of material7Repeatable performancereliability8produce feedstock in geometry of the producta usable form9avoid waste material when cleaning%of material lost10 Controlled feeding mechanism%of material lostConcept SelectionEvaluation of Wants(Scale 1-5,5 being
14、the highest score)Concepts1st(probe type mixer)-35 pts2nd(opposing sound sources)-47 pts3rd(rotating mixer)-52 pts4th(separate heating and mixing)-45 pts5th(hexagonal tube mixer)-59 ptsFinal Concept-hexagonal tubeModular in Design-minimum of two modulesEnclosed Structurereduces the possibility of co
15、ntaminationAngleadjustable depending on the flow of the material Hexagonal on outside flat surface allows transducers to easily be welded to the sidesSymmetrical shape allows for intense mixing in the center of the tubeCylindrical in the insideallows material to flow easilyallows for easy cleaningFi
16、nal Concept-Critical FunctionsIntroduction of Material-minimum of two funnelspolymer resin introduced into the first funnelmetal or ceramic powder introduced into the second funnelthis allows for the polymer to be melted prior to the introduction of the powder-to prevent settling of powderfunnels re
17、duce the possibility of spillsHeating-heating strips on the outside of the tubemodular design allows for the possibility of temperature zonesFinal Concept-Critical Functions Mixing-transducers on three opposing outside wallsintense mixing in the center of the tubereduces abrasion on walls of tubeCoo
18、ling and Removal of Material material enters a sieve-like structure and falls to a collecting panmaterial cools as it fallsthis method of removal allows the material to form into a spherical shape-usable formBudget20 K75 KUltrasonic Mixer:Target Budget$5000Mechanical MixersBudget-Chosen ConceptScheduleSchedule谢谢你的阅读v知识就是财富v丰富你的人生56、书不仅是生活，而且是现在、过去和未来文化生活的源泉。库法耶夫57、生命不可能有两次，但许多人连一次也不善于度过。吕凯特58、问渠哪得清如许，为有源头活水来。朱熹59、我的努力求学没有得到别的好处，只不过是愈来愈发觉自己的无知。笛卡儿60、生活的道路一旦选定，就要勇敢地走到底，决不回头。左拉
Concept-Selection-Top-Ten-Wants概念选择前十的希望课件
