在3D列印機中有許多的重要零件，壓電噴頭就是其中的一項零件，而在壓電材料在壓電噴頭中有著相當重要的角色，所以本研究一開始先購置APC（軟性）和FUJI（硬性）市售的壓電陶瓷，作為驅動噴頭使用，為了瞭解噴頭結構的變形情況，所以須進行壓電噴頭的模擬分析，由於廠商所提供之材料參數不足以建構出完整的壓電本構方程式，所以一開始先使用IEEE所提出的共振法量測所有的壓電常數，以建構出完整的方程式。從量測出來的材料參數結果中，可以發現FUJI（硬性）的壓電陶瓷較APC（軟性）有較高的剛性，但在壓電常數和介電常數方面則是相反的。在取得所有的材料參數之後，接下來便進行噴頭結構的致動模擬，壓電噴頭根據其不同的結構形式，可以區分成四種不同的形式，本研究的噴頭結構為參考市售的壓電噴頭結構，其為推擠式的致動型態，從模擬的結果中使用APC作為致動元件表現出較高的墨水腔室推擠量，其在700V推擠量分別為FUJI的7.94x10-8(m) 和APC的1.37x10-7(m)，從結果中也發現過大的推擠量，會導致各個墨水腔室的串擾過高，所以本研究便針對降低串擾來降低驅動電壓，另外藉由改變壓電片的型態和組合形式將驅動電壓降到降到合理範圍。在壓電片加工和流道的成型，則是分別使用超音波切割和電化學蝕刻來達成。
最後，對這兩種不同的材料進行成份、結晶結構、形貌、壓電及電場誘發應變進行分析，介由巨觀的材料參數比較的結果，找出材料微觀行為和巨觀機械性質表現之間的關聯性，已對之後壓電噴頭的設計有更全面地掌握。

There are many important components inside the 3D printing machine. Piezo inkjet head is one of the key parts. And the piezoelectric material has a very important role inside the piezo inkjet head. So in the beginning of this study first purchased APC (soft) and FUJI (hard) commercially piezoelectric ceramic. In order to understand the deformation of the head structure so finite element analysis will take in place. But the material parameters provided by the manufacturer is insufficient to construct complete piezoelectric constitutive equations. So in the beginning will use the resonance method which were published by IEEE to measure all of the piezoelectric constant to construct a complete equation. From the measured results of the material parameters which it can be found that FUJI (hard) piezoelectric ceramics have a higher stiffness than APC (soft) piezoelectric ceramics. But in terms of piezoelectric constant and dielectric constant is the opposite. After obtained all the material parameters. The next step will process the inkjet head structure simulation. According to the different structural forms of the inkjet head which it can be distinguished into four different types. In this study, the structure of inkjet head was used commercially piezoelectric inkjet head structure as a reference which is a push-type actuating inkjet head. From the simulation results using APC as actuated element exhibiting higher displacement in ink chamber. In the 700 V actuating the displacement of the APC is 7.94x10-8 (m) and FUJI is 1.37x10-7 (m), respectively. According to the simulation results too much displacement inside the ink chambers will decreased the inconsistence of each ink chamber which it’s called the crosstalk. By reducing driving voltage to reduced the crosstalk. To further reducing the driving voltage to a reasonable value by modified the shape or the assembly of the piezoelectric ceramic. In the piezoelectric ceramic machining and ink channel forming that use ultrasonic machining and chemical etching to achieve, respectively.
    Finally, the analysis of the composition, crystal structure, morphology, piezoelectric and electric field-induced strain for these two different material will be carry out. And compared to the material parameters to find the correlation between the macroscopic mechanical properties microscopic behavior of the piezoelectric ceramics. To have a comprehensive knowledge to the inkjet head design.

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