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研究生:洪誌隆
研究生(外文):Chiu-Lung Hung
論文名稱:低能量固態點火晶片用於含能材料觸發裝置之設計與研製
論文名稱(外文):Initiation of Energetic Materials by Low-energy Solid State Igniting Chip
指導教授:翁宗賢
指導教授(外文):Tzong-Shyan Wung,
學位類別:碩士
校院名稱:國立臺灣大學
系所名稱:應用力學研究所
學門:工程學門
學類:機械工程學類
論文種類:學術論文
論文出版年:2006
畢業學年度:95
語文別:英文
論文頁數:62
中文關鍵詞:低能量點火晶片薄膜金屬電橋有限元素法微機電點火器
外文關鍵詞:Low-energy igniting chipthin-film metal bridgefinite element methodMEMS igniter
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  • 被引用被引用:3
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用於含能材料觸發裝置之微機電點火晶片是一種低發火能量、起爆時間短且高可靠性的電起爆裝置,並已實際廣泛的應用於汽車、航空、太空以及國防工業。為了獲知設計電橋之點火時間,本文研製數種新型金屬薄膜電橋,並應用有限元素法模擬以電容放電之能量觸發點火電橋之暫態熱流場,推測引爆時間。
本文應用黃光微影、薄膜沉積、光阻掀舉法和蝕刻法等微機電製程設計與製作點火晶片。利用光敏電阻會隨著光的強弱而改變其電阻值的特性以量測點火晶片之觸燃時間;實驗結果顯示,金屬薄膜之固態點火晶片的電漿產生時間在數個微秒(10e-6 second)之間;金電橋的熔融和汽化時間也同時在電橋的端電壓變化曲線中顯示出來;而有塗佈含能材料(史蒂芬酸鉛)之點火晶片的起爆時間大約是180微秒左右。實驗數據亦與模擬分析結果相當符合,並可作為選用放電電容器最佳化設計的重要參考依據。
MEMS igniting chip is an excellent electro-actuating device to initiate energetic materials with exceptional features of high-stability, low initiating energy, great igniting power, and batch-fabricating capability. Igniting chips are widely applied in automobile, aeronautics, space, medical, and defense industries. In this thesis, several novel metal bridges were designed and fabricated. The transient thermal processes of ignition detonated by charged capacitors were simulated to investigate the igniting time of igniters on the bases of numerical analysis utilizing finite element methods (FEM).
A firing bridge of metal film was further deposited on the silicon substrate by a series of lithography, deposition, PR lifting, and etching. The performances of ignitions were measured by photoresistors which responded instantaneously with the explosive light of ignitions. The experimental results demonstrated that the thin-film solid state igniting chips possess capability of microsecond-scale ignition. The melting and evaporating time of golden bridges were also obtained in the measurements. Moreover, the average activating time of igniters with energetic materials was about 180μsec. The experimental data are compared well with the analytical results which provide pertinent bases for choosing proper capacitors to ignite solid bridges.
Abstract I
摘 要 II
Contents III
List of Figures V
List of Tables IX
Nomenclature X
Chapter 1 Introduction 1
1.1 Research Background 1
1.2 Review of Literature 2
1.3 Content of the Thesis 6
Chapter 2 Theory 7
2.1 Structure of Pyrotechnics 8
2.2 Joule Heating 8
2.3 Process of Ignition 9
2.3.1 Energy Balance 9
2.3.2 Discharge of Capacitor 11
Chapter 3 Design 15
3.1 Heat Sink Design of Igniter 15
3.2 Inherent Electrostatic Discharge Protection 16
3.3 Materials of Metal Bridge 17
3.4 Dimensions of Igniter 18
Chapter 4 Simulation 21
4.1 Basic Assumptions 21
4.2 Preprocessing 22
4.2.1 Element Attribution 22
4.2.2 Geometry Modeling 24
4.2.3 Meshing 26
4.2.4 Boundary Condition and Loadings 28
4.3 Solving 29
4.4 Results of Simulations and Discussions 29
Chapter 5 Fabrication and Measurement 37
5.1 Fabrication of Igniters 37
5.1.1 Simple Au Igniter 37
5.1.2 Simple Zr Igniter 39
5.1.3 Au/Zr Igniter 40
5.1.4 Dicing of Igniters 43
5.1.5 Contour of the Metal Bridge 43
5.1.6 Discussion of Resistance 44
5.2 Apparatus of Measurement 48
5.3 Measuring Results and Discussions 53
Chapter 6 Conclusions 60
References 61
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[9]邱宏昇, 金屬薄膜點火晶片設計模擬, 國立台灣大學應用力學研究所碩士論文,2004年.
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