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標題: | 利用氣溶膠噴射技術開發微型熱敏電阻於複雜表面車刀片進行製程監控應用 A Micro-Thermistor via Aerosol Jet Technology on sophisticated geometry inserts for turning process monitoring. |
作者: | Chia Wang 王嘉 |
指導教授: | 楊宏智 |
關鍵字: | 氣溶膠噴射技術,列印電子,氧化鎳,奈米銀墨水,熱敏電阻,直印式技術, Aerosol jet technology,Printed electronics,Nickel Oxide,Nano silver ink,thermistor,Direct Write technology, |
出版年 : | 2018 |
學位: | 博士 |
摘要: | 隨著現今智慧製造的概念不斷被提及,其中最重要的關鍵在於有效資料的取得,透過從製程中獲取各項資訊得以進行更高度效率的製造模式,例如產線製程設備間的資訊串流溝通(M to M)、設備預測性維護(Predictive maintenance)、製程最佳化(Process Optimization)等課題。車削加工是一項歷史悠久卻依然不斷精進的加工技術,隨著產品精度與複雜度要求以及對於成本控管概念的不斷提升,監控加工製程的議題一直是產學界關注的焦點。
本研究目標於實現「透過列印電子技術直接於複雜立體加工刀具表面製作感測元件」,以解決傳統上感測元件的安裝與製造不便性,並預期藉此透過列印電子技術密集部署感測元件,達到比以往更準確的溫度量測方式。從絕緣層的選用,利用聚酰亞胺薄膜達到貼附待測物表面低成本且快速地的絕緣層,以及製備適用於氣溶膠噴射技術的奈米氧化鎳墨水作為直印式感測器之感測層材料以及探討奈米銀墨水與氧化鎳墨水的匹配性,最後直接透過三種實際給熱的實驗驗證直印式感測器之效能。進行與商用熱電偶之升溫比較實驗,其製作於三種不同立體複雜表面上之溫度感測器之B-value計算在攝氏90度-250度可達到4310K,符合市售商用熱電偶之B-value範圍(2000K-6000K),相關度可達93.9%,驗證此種方式可以有效感測立體表面之溫度變化。研究中並探討在立體刀具上佈署多個感測器以更精確了解車刀實際溫度分佈變化,在非車削實驗(設定溫度200度)中預測刀尖穩態溫度可控制於2度誤差內;在車削實驗中實際透過列印式熱敏電阻量測之溫度與商用熱電偶之溫度變化更可達到99.66%之相關度。刀尖溫度在以往因為商用熱電偶不易安裝,蝕刻製程亦不易快速客製化立體結構之感測元件下,透過列印電子技術可大幅簡化安裝感測器與量測估算刀尖溫度之門檻,為車削製程溫度監控提供一新選擇。 Intelligent manufacturing is a new type process for high production efficiency that mentioned frequently in this few years. One of the most important things is data acquisition. Base on the data quality and quantity, some topics could be in further discussion like enhancing the communication between machine to machine, predictive maintenance and process optimization. Turning process is still a useful technology in various fabricating fields until now. Monitoring turning process is always in discussion for high machining accuracy or reducing cost. A miniaturized thermistor sensor was produced using the Aerosol Jet printing process for temperature sensing applications. A nickel oxide nanoparticle ink with a large temperature coefficient of resistance was fabricated. The thermistor was printed with a circular NiO thin film in between the two parallel silver conductive tracks on a cutting tool insert. The printed thermistor, which has an adjustable dimension with a submillimeter scale, operates over a range of 90–250℃ sensitively (B value of ~4310 K) without hysteretic effects. Moreover, the thermistor may be printed on a 3D surface of turning inserts through the Aerosol Jet printing process, and the correlation analysis between printed thermistor and thermocouple is 93.9% that has increased capability for wide temperature-sensing applications. |
URI: | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/70109 |
DOI: | 10.6342/NTU201800299 |
全文授權: | 有償授權 |
顯示於系所單位: | 機械工程學系 |
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