Optimasi Waktu Pengerjaan, Cuting Width Dan Kekasaran Permukaan Benda Kerja Pada Wire-Electrical Discharge Machining

Himawan, Aji (2008) Optimasi Waktu Pengerjaan, Cuting Width Dan Kekasaran Permukaan Benda Kerja Pada Wire-Electrical Discharge Machining. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Beberapa kinerja yang diinginkan dari proses pemesinan Wire-EDM adalah waktu pengerjaan yang singkat, cutting width yang sempit dan kekasaran permukaan basil pemotongan yang rendah. Permasalahannnya adalah bagaimana mengatur variabel proses agar ketiga kinerja tersebut dapat dioptimalkan secara bersamaan. Untuk melakukan optimasi proses terlebih dahulu ditentukan hubungan antara ketiga kinerja proses pemesinan Wire-EDM terhadap variabel proses ON Time (ON), OFF Time (OFF), Servo Reference Voltage (SV) dan Servo Speed (SF) dengan menggunakan metode permukaan respon. Model hubungan tersebut didapatkan dari eksperimen yang dilakukan berdasarkan rancangan central composite (CCD). Pada akhimya ketiga model tersebut digunakan dalam optimasi multi respon dengan pendekatan fungsi desirability. Melalui penelitian ini didapatkan model empiris polinomial orde kedua dari waktu pengerjaan, cutting width dan kekasaran permukaan benda kerja. Dari optimasi pada pemotongan sepanjang 10 mm dicapai waktu pengerjaan tersingkat 318 detik, cutting width tersempit 3 21 um dan kekasaran permukaan paling minimum dalam Ra sebesar 1.69 um . Ketiga nilai tersebut diperoleh dengan menetapkan nilai On Time (ON) sebesar 6, OFF Time (OFF) sebesar 23, Servo Reference Voltage (SV) sebesar 39, dan servo speed(SF) sebesar 90
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Some desired performance of the Wire-EDM machining process are short processing time, narrow cutting width and low surface roughness of the cutting result. The problem is how to set the process variables so that these three performance can be optimized simultaneously. To perform process optimization, the relationship between the three performance of the Wire-EDM machining process to the process variables ON Time (ON), OFF Time (OFF), Servo Reference Voltage (SV) and Servo Speed ​​(SF) is first determined using the response surface method. The relationship model is obtained from experiments conducted based on the central composite design (CCD). Finally, the three models are used in multi-response optimization with a desirability function approach. Through this study, a second-order polynomial empirical model of processing time, cutting width and surface roughness of the workpiece is obtained. From optimization on a 10 mm long cut, the shortest processing time is 318 seconds, the narrowest cutting width is 3.21 um and the minimum surface roughness in Ra is 1.69 um. These three values ​​are obtained by setting the On Time (ON) value to 6, the OFF Time (OFF) to 23, the Servo Reference Voltage (SV) to 39, and the servo speed (SF) to 90

Item Type:	Thesis (Other)
Additional Information:	RSM 671.35 Him o-1 2008 (weeding)
Uncontrolled Keywords:	Optimasi, Wire-EDM, Response Surface, CCD; Optimization, Wire-EDM, Response Surface, CCD
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1230 Cutting and sawing machinery
Divisions:	Faculty of Industrial Technology > Mechanical Engineering > 21201-(S1) Undergraduate Thesis
Depositing User:	EKO BUDI RAHARJO
Date Deposited:	05 Nov 2025 01:13
Last Modified:	05 Nov 2025 01:13
URI:	http://repository.its.ac.id/id/eprint/128733

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