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Microstructure-Based Analysis of Deformation Processes

為了解決Laser cutting的問題，作者Wu, Xin 這樣論述：

Dr. Xin Wu is an Associate Professor in the Department of Mechanical Engineering at Wayne State University. His research interests include materials processing and manufacturing, deformation, plasticity, formability and performance at room and elevated temperatures, stamping and superplastic forming

. He teaches a number of manufacturing courses at the university, including an undergraduate course of Manufacturing Processes (ME3450), and graduate courses of Metal Cutting (ME6450), Metal Forming (ME7451), Computer Simulation in Metal Forming (ME7995), Laser Application in Materials Processing (M

E7452), Automotive Assembly Processes and System (ME7453), and Computer simulation of micromanufacturing (ME7680).

Laser cutting進入發燒排行的影片

氣流隔絕裝置應用於光罩倉儲系統之隔絕效果研究

為了解決Laser cutting的問題，作者林哲宇 這樣論述：

目錄摘要 iABSTRACT iii誌謝 v目錄 vi表目錄 ix圖目錄 xi1 第一章 緒論 11.1 研究背景與動機 11.2 潔淨室 21.2.1 潔淨室定義 21.2.2 潔淨度分級範圍 21.2.3 潔淨室種類 41.3 微影製程及光罩 71.3.1 光阻劑 71.3.2 微影製程 71.3.3 光罩 81.3.4 光罩盒 81.4 氣態分子汙染物 81.5 撓曲方程式 101.6 文獻回顧 111.7 研究目的 131.8 研究創新 132 第二章 實驗設備與儀器 142.1 實驗設備 142.1.1 實驗場地 142.1.2 S

tocker room及外部無塵室 152.1.3 氣流隔絕裝置(FID) 172.1.4 示蹤氣體 202.1.5 雷射掃略成像系統 212.1.6 影像紀錄設備 242.2 實驗儀器 262.2.1 熱線式風速計 262.2.2 轉速計 262.2.3 壓差傳感器 272.2.4 THR20觸控式無紙紀錄器 283 第三章 實驗方法 293.1 實驗系統圖 293.2 FFU風速量測 303.3 示蹤氣體釋放手法 313.4 壓力調整方法 353.5 兩室壓差量測方法 353.6 實驗方法 353.7 流場可視化實驗流程 373.8 理論分析 373.

8.1 瑞利散射及米氏散射 383.9 質點影像測速技術 383.10 實驗數據分析方法 394 第四章 結果與討論 404.1 Case 1.0 404.2 Case 1.1 414.3 Case 1.2 434.4 Case 1.3 444.5 Case 1.4 464.6 Case 2.0 474.7 Case 2.1 494.8 Case 2.2 514.9 Case 2.3 524.10 Case 2.4 544.11 Case 3.0 564.12 Case 3.1 574.13 Case 3.2 594.14 Case 3.3 604.15 C

ase 3.4 624.16 Case 4.0 634.17 Case 4.1 654.18 Case 4.2 664.19 Case 4.3 684.20 Case 4.4 694.21 FID阻隔效果比較 715 第五章 結論與建議 745.1 結論 745.2 建議與未來實驗方向 75符號彙編 76參考文獻 78

The Greatest Invention: A History of the World in Nine Mysterious Scripts

為了解決Laser cutting的問題，作者Ferrara, Silvia 這樣論述：

In this exhilarating celebration of human ingenuity and perseverance--published all around the world--a trailblazing Italian scholar sifts through our cultural and social behavior in search of the origins of our greatest invention: writing.The L where a tabletop meets the legs, the T between double

doors, the D of an armchair’s oval backrest--all around us is an alphabet in things. But how did these shapes make it onto the page, never mind form complex structures such as this sentence? In The Greatest Invention, Silvia Ferrara takes a profound look at how--and how many times--human beings have

managed to produce the miracle of written language, traveling back and forth in time and all across the globe to Mesopotamia, Crete, China, Egypt, Central America, Easter Island, and beyond. With Ferrara as our guide, we examine the enigmas of undeciphered scripts, including famous cases like the P

haistos Disk and the Voynich Manuscript; we touch the knotted, colored strings of the Inca quipu; we study the turtle shells and ox scapulae that bear the earliest Chinese inscriptions; we watch in awe as Sequoyah single-handedly invents a script for the Cherokee language; and we venture to the cutt

ing edge of decipherment, in which high-powered laser scanners bring tears to an engineer’s eye. A code-cracking tour around the globe, The Greatest Invention chronicles a previously uncharted journey, one filled with past flashes of brilliance, present-day scientific research, and a faint, fleeting

glimpse of writing’s future. Silvia Ferrara is a professor of Aegean civilization at the University of Bologna. She studied at University College London and the University of Oxford and, after several years as a researcher in archaeology and linguistics at Oxford, returned to Italy. She has taugh

t at University College London, the University of Oxford, and Sapienza, University of Rome.Todd Portnowitz is the translator of Go Tell It to the Emperor by Pierluigi Cappello, Midnight in Spoleto by Paolo Valesio, and Long Live Latin by Nicola Gardini. He is the recipient of a Raiziss/de Palchi Fel

lowship of the Academy of American Poets. He lives in Brooklyn, New York.

再生礦物填充料類型與含量對密級配熱拌瀝青混凝土力學特性之影響

為了解決Laser cutting的問題，作者Tarekegn Kumala Sherre 這樣論述：

Investigation of recycled waste materials as a replacement of conventional filler is one alternative problem solving mechanism in hot mix asphalt (HMA). This study was designed to analyze the characteristics of two recycled fillers called hollow concrete block (HCB) powder and brick powder (BP), to

assess impacts of filler type and content on the mechanical and cracking properties of hot mix asphalt (HMA) at 3%, 5% and 7% as a full replacements for limestone (LS) filler. The recycled materials and limestone fillers obtained from construction and demolition wastes (CDW) site, and naturally min

ed for commercial uses, respectively. Filler characteristics were examined using different cutting-edge technologies, such as laser diffraction particle size analysis (LDS), Fourier transform infrared (FTIR), Brunauer, Emmette, and Teller method (BET), X-ray diffractometer (XRD), scanning electron m

icroscope (SEM) and energy dispersive x-ray spectroscopy (EDS). Rotational viscosity and dynamic rheological properties of asphalt mastic with recycled filler over a wide range of frequencies and temperatures have shown better values than the conventional filler. The respective effects of the recycl

ed fillers and the mechanical properties of the HMA mixtures were assessed by investigating superpave volumetric analysis, indirect tensile strength (ITS), moisture damage by tensile strength ratio (TSR), permanent deformation and indirect tensile cracking indices (IDTindex) tests. The analysis of t

he volumetric properties revealed that the 5% of each fillers content was considered as an optimum filler content in the mixtures among the three fillers percentages (3%, 5% and 7%). Thus, the mechanical properties had investigated at the optimum 5%, except for IDT crack tests that used three differ

ent % of fillers. The results demonstrated that mixture with the HCB powder recorded a 6% higher TSR value than the LS mixture and 7.2% higher TSR value than the BP mixture. Mixtures with the HCB powder significantly improved the moisture, rutting, and cracking resistance of the HMA, which are fact

ors critical to extend the life of asphalt concrete. In contrast, using BP results in mixed values and negative effects particularly in terms of moisture resistance and rutting. The filler concentrations had also significant effect on the cracking performance of the asphalt. Peak loads and fracture

energy were increased as filler percentages were increased from 3%, 5% to 7% while the cracking indices such as cracking tolerance index (CT-index), flexibility index (FI), fractural energy index (FEI), toughness index (TI), crack resistance index (CRI), and fracture strain tolerance ( FST) were gov

erned at the 5% filler concentration. Strong linear correlations were observed for the R2 values of 0.89, 0.85, 0.84 and 0.68 for the CT index, FI, FEI, and TI, respectively, while a moderate correlation with 0.52 R2 for CRI and a weak correlation with 0.44 R2 for FST were observed between both spec

imen diameters. Therefore, both of the specimen diameters examined in this study (100mm and 150mm) may use interchangeably to characterize the crack performance of HMA using the IDT test due to the test results found and discriminated low variability of cracking indices.