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Yatna Yuwana Martawirya
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Aerospace Engineering Automotive Engineering Control & Systems Engineering Industrial & Manufacturing Engineering Mechanical Engineering

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Pengembangan sistem pemantau proses produksi dengan intelligent character recognition sebagai pemindai objek Rafi Rasyad; Yatna Yuwana Martawirya
Jurnal Teknik Mesin Indonesia Vol 16 No 2 (2021): Jurnal Teknik Mesin Indonesia
Publisher : Badan Kerja Sama Teknik Mesin Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36289/jtmi.v16i2.256

Abstract

Perkembangan digitalisasi menuntut industri terus memperbaiki organisasinya untuk bersaing di pasar global. Digitalisasi mengubah penanganan data dan informasi dengan menawarkan peluang baru untuk mengolah informasi. Hal ini memungkinkan peningkatan efektivitas dan efisiensi pada perusahaan. Industri EPC (Engineering, Procurement and Construction) menjadi salah satu industri yang belum dapat menerapkan konsep ini. Diperlukan sebuah metode untuk menerapkan konsep digitalisasi dengan menyesuaikan kondisi lingkungan dan operasional pada industri EPC. Konsep pemantauan proses produksi dengan identifikasi pada material atau komponen pada workshop fabrikasi telah diusulkan sebagai implementasi konsep digitalisasi yang lebih sesuai tanpa menambahkan alat dan hanya memakai perangkat ponsel pintar. Sistem identifikasi objek industri dikembangkan untuk menghubungkan produk fisik dengan sistem. Proses perancangan sistem ini dibagi menjadi dua bagian yaitu (1) perancangan sistem identifikasi dan (2) perancangan sistem aplikasi. Sistem dibangun dengan menggunakan Application Programming Interface (API) dari Firebase sebagai realtime database dan Machine Learning (ML) Kit dari Google sebagai sistem identifikasi menggunakan prinsip ICR (Intelligent Character Recognition). Pengujian dilakukan langsung di workshop fabrikasi industri EPC. Hasil pengujian menunjukkan bahwa sistem ini berjalan dengan baik. Komponen produksi dapat terintegrasi terhadap sistem dan menghasilkan data serta informasi yang dapat ditampilkan pada perangkat ponsel pintar berbasis Android.
An Experimental Verification of a Methodology for Assessing The Energy Performance on Turning Processes Sri Raharno; Yatna Yuwana Martawirya; Jeffry Aditya Cipta Wijaya
Mesin Vol. 25 No. 2 (2016)
Publisher : Mesin

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Abstract

This paper aimed to experimentally verify the methodology for assessing energy performance of turning processes that had been developed on the prior research. Specific energy consumption is used as the indicator in the process assessment. The experimental verification can be separated into two main steps. The first step is to construct the reference values of specific energy consumption and the second step is to compare the reference values to the specific energy consumption from the assessed process. The reference values were constructed based on the data of specific energy (from experiment) using data envelopment analysis (DEA) method. In this case, MaxDEA Basic 6.6 program has been used to determine the reference values. The experiment was conducted using several lathe machines based on the certain metering strategy. The metering strategy must be determined to maintain the consistency and validity of the process assessment.  After the reference values were constructed, the assessment can be carried out. Energy consumption from the assessed process was measured using power analyzer, and then it was converted into specific energy consumption value according to the material removal rate. Energy reduction score could be calculated based on the distance between the data of specific energy consumption (from the assessed process) and the reference value. The energy performance of the machine is better if the score of energy reduction is lower and nearer to the reference value. The methodology was designed to be as simple as possible in order to be appropriately implemented on the industry, but without reduce the quality of the assessment. shedding. 
PERANCANGAN BONDING ASSEMBLY JIG Yatna Yuwana Martawirya; Sri Hardjoko Wirjomartono; Totok Ary Riptanto
Mesin Vol. 10 No. 1&2 (1994)
Publisher : Mesin

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Abstract

Sejalan dengan kemajuan teknologi di bidang industri pesawat terbang dan ruang angkasa. saat ini diperlukan material yang memiliki perbandingan kekuatan terhadap berat setinggi mungkin. Salah satu material yang sesuai dengan permintaan ini adalah komposit, yang banyak digunakan dalam struktur pesawat terbang. Komposit merupakan gabungan dari beberapa material yang disatukan pada temperatur dan tekanan tertentu. Proses terakhir ini dinamakan proses curing. dan biasanya dilakukan di dalam autoclaves.Salah satu produk komposit adalah komponen komposit yang terbuat dari Aluminium. Komponen yang dibuat ini harus memenuhi syarat-syarat yang diperlukan pesawat terbang, diantaranya geometri dan stabilitas bentuk yang memenuhi persyaratan. Untuk mendapatkan ini komponen komposit dibuat dengan menggunakan perkakas bantu yaitu bonding tool atau Bonding Assembly Jig (BAJ).Dalam makalah ini akan dibahas perancangan BAJ untuk pembuatan komponen pada sayap pesawat terbang, yailu aft flap assy outboard trailing edge flap wing. Penelitian yang dilakukan bertujuan menentukan performansi dan mengoptimalkan rancangan BAJ . Dari hasil perhitungan diketahui bahwa defleksi sewaktu proses handling sebesar 10,83 mm. lni berarti masih di bawah defleksi yang diijinkan, yaitu 14,96 mm. Allernatif rancangan BAJ 3 dipilih karena mempunyai performansi perpindahan panas yang paling baik.Kata kunci : sunbungan adhesives, perfonnansi kekakuan. performansi perpindahan panas.
SISTEM PRODUKSI TERDISTRIBUSI MANDIRI: PERANGKAT LUNAK INTI PENGEMBANGAN SISTEM PRODUKSI Yatna Yuwana Martawirya; Rochmad Setyadi
Mesin Vol. 15 No. 1 (2000)
Publisher : Mesin

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Abstract

The objective of the present research is to develop an application software called MSC (Manufacturing System Core) which is used as a core in the development of a manufacturing system software. The development of MSC is based on ADiMS (A utonomous Distributed Manufizcturing System). An object-oriented modeling method is adopted to represent the autonomous component of the manufacturing systems. The example of minimum application of MSC and the method of extent are discussed to understand the modularity of MSC. Software development technology applied at MSC are discussed to see the ability of MSC in the data sharing with other application.
MINIATUR SISTEM TRANSFER FLEKSIBEL DENGAN PENGENDALIAN TERDISTRIBUSI MENGGUNAKAN PLC Yatna Yuwana Martawirya; Akhmad Hery Kusuma; Yohanes Kurnia Pamungkas
Mesin Vol. 17 No. 1 (2002)
Publisher : Mesin

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Abstract

The objective of the present research is to develop a miniature of a module of the Flexible Transfer System (STF). STF is the alternative solution of system transportation in advance manufacturing system environment which considered flexible on its components. The flexibility that can be fulfilled by STF is the flexibility in a route of transportation and the ability to be developed in the future. For these purposes, the control architecture of STF is designed to be distributed and each of the controllers has autonomy to carry out decision making based on its condition. At this research a miniature of STF that consists of a mechanical system module, an executor controller, and a manager controller has been developed, and the communication among the distributed controllers has been carried out and successfully.
PERANCANGAN ALGORITMA PENJADWALAN PEMBUATAN CETAKAN SESUAI DENGAN DUE DATE JADWAL PELEBURAN LOGAM UNTUK MENDUKUNG KONSEP SISTEM PRODUKSI TERDISTRIBUSI MANDIRI ( STUDI KASUS SEKSI FOUNDRY PT. BANINUSA INDONESIA ) Yatna Yuwana Martawirya; Bagus Arthaya; Yanni Yanni
Mesin Vol. 17 No. 3 (2002)
Publisher : Mesin

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Abstract

At this moment, manufacturing industries in Indonesia must have high flexibility that can quickly responds dynamic changes in production processes. Autonomous Distributed Manufacturing System (ADiMS) is one of the production system alternative that can increase system flexibility with ability to adapt dynamic changing condition in the system.ADiMS is a production system where productions elements are independent, which planning process and production control is distributed to each independent element. Each of production's element has autonomy in running the monitoring, taking the decision, controlling, and communications functions with the other production's elements. Because each of the production elements take the decision independently, there should be a coordination of decision making result so the conflict will not occur among independent production elements.In this research AdiMS concept is applied in Foundry section at PT. Baninusa Indonesia. The task is to make a sand mold producing schedule based on the schedule of melting of cast iron or cast steel so it can support cast's order and filling the customer order. This research is done with the help of application program that specialized developed so it is hoped will make results a better scheduling of making sand mold casting.
Co-Authors Akhmad Hery Kusuma Bagus Arthaya Jeffry Aditya Cipta Wijaya Rafi Rasyad Rochmad Setyadi Sri Hardjoko Wirjomartono Sri Raharno Totok Ary Riptanto Yanni Yanni Yohanes Kurnia Pamungkas