레포트 (9)
material in layers.The model is produced by extruding small beads of thermoplastic material to form layers as the material hardens immediately after extrusion from the nozzle.The nozzle can be moved in both horizontal and vertical directions by a numerically controlled mechanism.The thermoplastics are heated past their glass transition temperature and are then deposited by an extrusion head.S
13페이지 | 2,200원 | 2018.06.25
vertical position of the nozzle is raised at least 0.1mm (0.004 inch), which is equal to the thickness of good quality paper, or the supporting table is lowered an equivalent amount, and the process is repeated. In order to build an object the controlling drawing for each layer changes very slightly.Typical standard manufacturing methods are subtractive, that is material is removed from a base f
17페이지 | 2,500원 | 2018.06.25
Material properties)재 료American balsa wood & balsa자 료 값부 여 값Young’s modulus1130 – 6000(MPa)3565(MPa)Density0 ~ 130(kg/m ^3)65(kg/m ^3)Voisson’s ratio0.2 ~ 0.60.4-www.matbase.com과 www.matweb.com을 이용하여 조사한 결과 자료값에 나온 것처럼 범위값으로 나와 그 평균값들을 부여하기로 결정 하였다. 4. 경계조건 (Bound
10페이지 | 1,200원 | 2013.03.20
[화학공학]Carbon-assisted synthesis of aligned Zno nanowires(영문)
materialsZnO carry out a role of UV rays by itself IntroductionAnalysis resultsIn a paper The aligned ZnO nanowires have been grown by carbothermal route at 900℃ vertically on silicon substrates, without any metalcatalysts or vacuum systemExperimentZnOCArSilicon substrateQuartz boatQuartz furnaceMole ratio =1:1O2Testing processExperimentFESEM analysisTEM analysisXRD analys
16페이지 | 1,600원 | 2010.08.20