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Practical Approach to 3D Weaving

為了解決Shaft work的問題，作者 這樣論述：

Dr. B. S. Sugun is currently a Senior Principal Scientist at the Center for Societal Missions and Special Technologies (CSMST), CSIR - National Aerospace Laboratories at Bengaluru. He has an interdisciplinary background with a Bachelor’s & Master’s degree in Textiles Technology coupled with a Ph.D.

in Mechanical Engineering. He has been working in the area of polymer matrix composites research for the past two decades. Some of his early works were on Low velocity impact behavior of Polymer Matrix composites, resin transfer molding, fiber metal laminates & glass-knit composites. In the last dec

ade, he has focused on the technology of 3D weaving. His research work revolves around evolving novel concepts for indigenous 3D weaving machinery, Near-net preforming approaches and developing creative weave designs for engineering the preforms for use in composites. His recent endeavors comprises

of developing a prototype machine for dual plane shedding based 3D weaving wherein basic concepts of the technology have been practically realised, development of an automated customised take-up-at-will 24 shaft dobby loom, utilizing pleat weaving concept for weaving T-stiffeners, development of hyb

rid carbon-Kevlar preform for fuselage wing joint of Micro air vehicle and weaving complex geometrical shapes using 3D noobed and angle interlock weave architectures ex., gas turbine engine nozzle flap. He was a Raman research fellow at the University of Manchester, UK in 2015, where he worked on ad

dressing fiber lay-up schemes for rotational symmetric components using robotics approach and also worked towards the development of specific Profiles for applications in composites using three dimensional braiding. He has several peer reviewed publications, conference papers & has delivered several

invited talks. With participation from a private industry within the country, he is currently developing a commercially viable, production version multi weft insertion 3D weaving loom for use in textile industries. He is currently associated with the Quality Assurance and Airworthiness activities o

f NAL in addition to his research works at CSMST.

Shaft work進入發燒排行的影片

以實驗法及數值模擬交叉探討隧道火災逆煙層發展與其控制

為了解決Shaft work的問題，作者王冠懿 這樣論述：

本研究以縮小尺度隧道實驗，並以電腦模擬建置相同縮小尺寸隧道進行探討。為達到較佳模擬結果，本研究導入特徵運算得出本次縮小隧道之網格尺寸為2 cm，全尺度隧道FDS模擬網格尺寸則為40 cm。環伺隧道火災相關研究，涉及實驗過程中各項參數之校正及驗證者相當缺乏，因此本研究除了找出可將煙流排出之臨界風速外，更著重探討實驗中的流場穩定性，將訂定設置的初始條件，確立一套實驗標準設置方法，可使實驗更精確，也較能得到與實際相符的結果。本研究最重要的設置為在實驗隧道前裝置一流體穩定箱，除可穩定進入隧道的流體品質外，最重要的是可以透過內裝的吸音海綿及特出結構，有效濾除鼓風機所產生的不穩定氣流，如此便可減

少流場與逆煙層之交互作用的影響變因。 本研究由設定尺寸為200 m*12 m*6 m之全尺度隧道，經縮小尺度公式計算得出縮小隧道尺寸為10 m*0.6 m*0.3 m，全尺度測試之標準油盤尺寸為250 cm（熱釋放率14,200 kW），而縮小實驗之油盤尺寸則為6 cm（熱釋放率7.96 kW）。為得知經計算後的縮小模擬結果是否與實際尺寸之臨界風速的差異性，實驗中主要以模擬法比對等比例縮小實驗之結果，以驗證加裝穩定箱後之實驗對於流場穩定性的提升，實際的觀測實驗利用雷射切面以觀測煙霧流場，所得到的結果比對理論臨界風速有高度相似性，可得知本研究所設置之穩定箱與對模擬實驗參數之調校的重要性，對

於往後的隧道實驗具有相當程度的指向性與貢獻。

The Black Panther Party: A Graphic Novel History

為了解決Shaft work的問題，作者Walker, David F. 這樣論述：

The author presents a bold and fascinating graphic novel history of the BlackPanther Party. David F. Walker is an award-winning comic book writer, author, filmmaker, journalist, and educator. His work in comic books includes Shaft, winner of the Glyph Award for Story of the Year, Power Man and Iro

n Fist, Nighthawk, Fury, Secret Wars: Battleworld, Cyborg, The Army of Dr. Moreau, and Number 13. He is also the creator of the critically-acclaimed YA series The Adventures of Darius Logan and the author of the graphic novel biography The Life of Frederick Douglass. Recognized as a leading schola

r expert of African American cinema, Walker produced one of the definitive documentaries on the topic of Blaxploitation films, Macked, Hammered, Slaughtered, and Shafted.Marcus Kwame Anderson is an illustrator and fine artist. Much of his work explores the beauty and diversity of the African diaspor

a and often incorporates social commentary. He graduated from SUNY Fredonia with a degree in illustration. Anderson is the co-creator of the comic book series Snow Daze and has illustrated stories in Action Lab’s Cash and Carrie and F.O.R.C.E.

電腦輔助設計應用於汽車傳動元件不良品檢測系統

為了解決Shaft work的問題，作者范春喜 這樣論述：

由於工業製造對高精度、高自動化水平的要求，基於計算機視覺的尺寸檢測技術近年來備受關注。在大多數公司中，軸零件尺寸仍然是通過手動測量獲得的，滿足高速、高精度的測量要求很具有挑戰性。因此，開發一種低成本、省時、高精度、高效率的汽車傳動軸零件尺寸檢測系統至關重要。本論文提出了一種幾何軸類零件的尺寸檢測系統方法，此系統主要由兩個主要部分組成。首先，圖像採集系統用於計算機輔助設計進行設計和仿真，節省時間和金錢。第二部分，圖像預處理是通過二維離散傅里葉域方法中的自適應奇異值分解來消除光照變化對樣品表面的影響。提出了一種基於能量分析和大津閾值相結合的方法。 它不僅可以提取部分圖像的邊緣輪廓，而且具有無需參

數調整、對噪聲敏感度低、各向同性等優點。汽車零件沿縱橫軸的產品尺寸是根據邊緣計算的。軸的大小是通過將軸中的像素數乘以一個像素的值來精確計算的。最後將汽車零件用於測量研究，得到測量數據並進行分析。實驗結果表明，該系統的重複性誤差小於0.3 mm。