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All Journal AUSTENIT Simetris ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Infotekmesin Jurnal Pengabdian Masyarakat Teknik Jurnal Teknik Mesin Mechanical Xplore Radiant : Journal of Applied, Social, and Education Studies
Kumbarasari, Shanti
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Automotive Engineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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The Box-Behnken Response Surface Methodology Approach to Optimize Tensile Strength Load in Resistance Spot Welding Using SPCC-SD Steel Mulyadi, Dodi; Amir, Amir; Cepi Budiansyah, Ade; Sukarman, Sukarman; Khoirudin, Khoirudin; Arif Wibowo, Ludvi; Kumbarasari, Shanti
Jurnal Teknik Mesin Mechanical Xplore Vol 4 No 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v4i2.6090

Abstract

This article describes an experimental investigation into optimizing spot welding resistance (RSW) using a spot-welding machine equipped with a dual-electrode Pressure Force System (PFS). The optimization procedure entails the incorporation of SPCC-SD (JIS G 3141), a low-carbon steel that finds extensive application in the automotive sector. With the widespread use of SPCC-SD steel, RSW is an essential process in the automotive industry for assembling body components. This study employs the Box-Behnken Response Surface Methodology (Box-Behnken-RSM) to optimize the tensile strength load (TS-load), a critical parameter in RSW, through a meticulous analysis of the interplay between Holding Time, Squeezing Time, Welding Current, and Welding Time. Through the methodical design of experiments, the collection of Tensile Strength Load data, and the application of statistical modeling via RSM, this study employs SPCC-SD steel to determine the optimal values for these variables in RSW. The results above readily offer a valuable understanding of the most significant determinants and their interrelationships, thus facilitating advancements in welding methodologies and quality control in the automotive manufacturing sector. This study employs the Box-Behnken Response Surface Methodology to investigate the impacts and interrelationships of different parameters thoroughly. It aims to enhance the TS-load using SPCC-SD steel during the resistance spot welding procedure. This research contributes to advancing welding methodologies employed in the automotive manufacturing sector.
Otomatisasi Pengisian Runner Plastik Polyethylene dengan Autoloader Conveyor Kumbarasari, Shanti; Rahadiansyah, Rinji; Omachi, Moric
SIMETRIS Vol 18 No 1 (2024): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v18i1.419

Abstract

Pada proses produksi plastik polyethylene (PE) dengan cetakan dua plate, dihasilkan runner (bagian plastik yang tidak digunakan) yang perlu didaur ulang. Selama ini pemindahan runner polyethylene ke mesin granulator untuk dicacah dan didaur ulang dilakukan secara manual, yang beresiko menyebabkan kelelahan dan cedera bagi operator. Maka diperlukan pemasangan material handling autoloader conveyor untuk memindahkan runner polyethylene secara otomatis dengan spesifikasi yaitu dimensi bak penampungan runner 1150 x 987 x 924 mm3, dimensi konveyor: 1150 x 2021 x 2254 mm3, kemiringan konveyor 45°, jenis belt conveyor adalah flat belt plastik dengan panjang belt 2,5 meter berdiameter 164 mm. Sumber penggerak: motor AC 1,5 HP, 1,1 kW, 4 pole, 1390 rpm with MCB: 6 Ampere. Untuk part automatisasi menggunakan sensor proximity yang berfungsi alat pendeteksi perubahan jarak terhadap pada suatu benda tanpa adanya kontak fisik. Penggunaan autonics proximity sensor AC 2 Wire PR 12-4AC untuk mengidentifikasi posisi hoper dalam posisi kosong atau penuh terisi material .Pemasangan material handling autoloader conveyor merupakan salah satu solusi untuk mengatasi permasalahan pemindahan runner polyethyene secara manual, sehingga dapat meningkatkan optimalitas proses daur ulang, keamanan, dan kesehatan pekerja di pabrik.
Active Control based on Adaptive Filters for Elastic Supported Cylinders SUBEKTI, SUBEKTI; SUBARNA, NANA; KUMBARASARI, SHANTI; BIANTORO, AGUNG WAHYUDI
ELKOMIKA: Jurnal Teknik Energi Elektrik, Teknik Telekomunikasi, & Teknik Elektronika Vol 11, No 2: Published April 2023
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/elkomika.v11i2.479

Abstract

ABSTRAKDalam makalah ini, kami menyajikan strategi kontrol feedforward baru disajikan untuk kontrol getaran induksi aliran dari silinder tabung yang ditopang balok kantilever elastis yang dipasang melintang. Strategi kontrol bertujuan untuk membatasi gerakan dari silinder tabung yang ditopang balok kantilever elastik, untuk mencegah getaran optimal yang akan menghasilkan nonlinear sistem. Sistem control feedforward menggunakan gabungan antara multiresolution wavelet dengan Filtered-x least mean square (FxLMS) control algorithm. Untuk memverifikasi kelayakan algoritme kontrol yang diusulkan, upaya numerik dengan menggunakan persamaan Van der Pol dan hasil penerapan dalam eksperimental dilakukan untuk memperlihatkan respon getaran yang terjadi terhadap waktu. Diperoleh bahwa keefektifan algoritme wavelet-FxLMS sebagai strategi kontrol getaran aktif nonlinear telah berhasil didemonstrasikan baik secara eksperimental maupun teoritis di bawah osilator bangun Van der Pol.Kata kunci: kontrol adaptif, teori kontrol, sistem kontrol, kontrol getaran, sistem kontrol non-linier. ABSTRACTIn this paper, we present a novel feedforward control strategy presented for the control of flow-induced vibration of a tube cylinder supported by a transversely mounted elastic cantilever beam. The control strategy aims to limit the movement of the tube cylinder which is supported by elastic cantilever beams, to prevent optimal vibration which will result in a nonlinear system. The feedforward control system uses a combination of multiresolution wavelets and the Filtered-x least mean square (FxLMS) control algorithm. To verify the control feasibility of the proposed algorithm, a numerical effort using Van der Pol equation and the results of implementing it in the experiment was carried out to reveal the response vibrations that occur over time. It was found that the effectiveness of the wavelet-FxLMS algorithm as a nonlinear active vibration control strategy has been successfully demonstrated both experimentally and theoretically under a Van der Pol wake oscillator.Keywords: adaptive control, control theory, control systems, vibration control, nonlinear control systems.
PENERAPAN METODE QUALITY FUNCTION DEPLOYMENT (QFD) DALAM PERANCANGAN DAN PEMBUATAN ALAT PEMANENAN KELAPA SAWIT BERMOTOR PADA DI INDUSTRI KELAPA SAWIT : PERANCANGAN DAN PEMBUATAN ALAT PEMANENAN KELAPA SAWIT BERMOTOR Reky Kurnia Widhi, Andreas; Nugroho, Oktavianus Ardhian; Kumbarasari, Shanti
Infotekmesin Vol 16 No 1 (2025): Infotekmesin: Januari 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i1.2452

Abstract

In the oil palm plantation industry, several motorized palm oil harvesting equipment already exist in the palm oil industry market. Several motorized palm harvesting equipment, such as STIHL PC 70 and Tanika TS-5, are on the market. These two machines are rarely used because the tool's price is still high compared to the manual method. One part that makes both tools expensive is the gearbox. In addition, this part is the most often damaged so it requires a long repair time and increases the time to harvest oil palm. This research aims to design a gearbox for oil palm harvesting equipment that is low-cost, lightweight, and tough. The Quality Function Deployment (QFD) method was chosen to prototype the palm oil harvesting gearbox. The results of this research obtained a prototype gearbox that is lightweight and has a tough mechanical system. In addition to its manufacture, which is carried out independently and using local materials, the production cost of the gearbox is low, even when it is still in prototype form.
Pengelolaan Sampah Organik Masyarakat Menjadi Kompos Dengan Metode Biopori di Lingkungan Masyarakat Desa Cibuntu, Cibitung, Bekasi, Jawa Barat Saputra , Hendra; Basyir Rantawi , Azhar; Leksi Siregar , Ahdiat; Rahardja, Istianto Budhi; Setiadi, Bambang; Sedu Kemie, Silvester; Kumbarasari, Shanti
Jurnal Pengabdian Masyarakat Teknik Vol. 7 No. 2 (2025): Jurnal Pengabdian Masyarakat Teknik (JPMT)
Publisher : Fakultas Teknik Universitas Muhammadiyah Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Sampah merupakan hasil produk sampingan kegiatan yang tidak terpakai lagi, memiliki nilai ekonomi yang rendah, selain itu juga menghasilkan bau, dan menggangu pemandangan. Sampah organik akan menghasilkan nilai yang baik bila dilakukan proses lebih lanjut. dengan menggunakan metode biopori kita dapat mengurangi masalah sampah yang dihasilkan dari rumah tangga. Tujuan dari kegiatan pengabdian kepada masyarakat ini adalah membangun  kesadaran dari masyarakat untuk dapat mengelola sampah organik pada masing – masing rumah, selain itu juga untuk mengetahui berapa penurunan rata rata sampah organiknya selama proses pengomposan terjadi. Dengan metode biopori dapat mempercepat penguraian limbah organik rumah tangga, dan mengendapkan genangan air yang berada di dalam wadah ke dalam tanah. Hasil penguraian tersebut akan menjadi kompos yang dapat dipergunakan sebagai media tanam. Biopori yang dipergunakan akan mengatasi permasalahan limbah organik yang semakin meninggi, dimana dapat menyusutkan 70% dari volumenya.
PERANCANGAN DAN PEMBUATAN COMBINATION DIES PRODUK WALL BRACKET UNTUK TOWEL BAR Kumbarasari, Shanti; Nugroho, Theodorus Argo; Dewata, Amadea Widi; Krisstyoko, David Hendra; Suryana, Erwin; Priyadi, Laksana Ari Hadi; Wibowo, Eko Sulistyo
RADIANT: Journal of Applied, Social, and Education Studies Vol. 1 No. 2 (2020): RADIANT Journal of Applied, Social, and Education Studies
Publisher : Politeknik Harapan Bangsa Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52187/rdt.v1i2.25

Abstract

Untuk pemenuhan kebutuhan proyek bangunan skala apapun, target waktu yang relative cepat maka diperlukan kerja sama pada subcont penyedia pelengkap proyek bangunan. Bagian sanitasi merupakan kelengkapan interior bangunan, salah satu komponen bagian sanitasi adalah towel bar. Wall bracket yang menjadi bagian towel bar selama ini metode pembuatannya menggunakan mesin bubut manual 1 pcs wall bracket membutuhkan waktu 2 jam. Agar ketersediaan produk towel bar terutama wall bracket dapat tepat waktu, bentuk produk konsisten maka diperlukan inovasi dalam metode pembuatannya yaitu salah satunya menggunakan metode combination dies untuk meningkatkan produksi dan memenuhi permintaan 200 pcs/bulan. Agar mendapatkan produk wall bracket dengan dimensi diameter luar 33.1 mm, tinggi, diameter dalam 3.5 mm, tinggi 8 mm, sudut 82odengan ketebalan 2 mm dengan metode pengerjaan combination dies pada mesin Nagao 110 Ton ditentukan oleh ukuran punch atau drawing die yang tepat, sistem knock out, perhitungan stroke yang tepat sehingga produk tidak menempel pada dies. Pembuatan produk wall bracket pada towel bar dengan metode dies combination dapat mempersingkat waktu proses permesinan dan setiap produk yang dihasilkan dapat lebih dari satu produk disesuaikan dengan kapasitas mesin stamping.
Otomatisasi Pengisian Runner Plastik Polyethylene dengan Autoloader Conveyor Kumbarasari, Shanti; Rahadiansyah, Rinji; Omachi, Moric
SIMETRIS Vol 18 No 1 (2024): SIMETRIS
Publisher : Sekolah Tinggi Teknologi Ronggolawe Cepu

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51901/simetris.v18i1.419

Abstract

Pada proses produksi plastik polyethylene (PE) dengan cetakan dua plate, dihasilkan runner (bagian plastik yang tidak digunakan) yang perlu didaur ulang. Selama ini pemindahan runner polyethylene ke mesin granulator untuk dicacah dan didaur ulang dilakukan secara manual, yang beresiko menyebabkan kelelahan dan cedera bagi operator. Maka diperlukan pemasangan material handling autoloader conveyor untuk memindahkan runner polyethylene secara otomatis dengan spesifikasi yaitu dimensi bak penampungan runner 1150 x 987 x 924 mm3, dimensi konveyor: 1150 x 2021 x 2254 mm3, kemiringan konveyor 45°, jenis belt conveyor adalah flat belt plastik dengan panjang belt 2,5 meter berdiameter 164 mm. Sumber penggerak: motor AC 1,5 HP, 1,1 kW, 4 pole, 1390 rpm with MCB: 6 Ampere. Untuk part automatisasi menggunakan sensor proximity yang berfungsi alat pendeteksi perubahan jarak terhadap pada suatu benda tanpa adanya kontak fisik. Penggunaan autonics proximity sensor AC 2 Wire PR 12-4AC untuk mengidentifikasi posisi hoper dalam posisi kosong atau penuh terisi material .Pemasangan material handling autoloader conveyor merupakan salah satu solusi untuk mengatasi permasalahan pemindahan runner polyethyene secara manual, sehingga dapat meningkatkan optimalitas proses daur ulang, keamanan, dan kesehatan pekerja di pabrik.
PENERAPAN METODE QUALITY FUNCTION DEPLOYMENT (QFD) DALAM PERANCANGAN DAN PEMBUATAN ALAT PEMANENAN KELAPA SAWIT BERMOTOR PADA DI INDUSTRI KELAPA SAWIT : PERANCANGAN DAN PEMBUATAN ALAT PEMANENAN KELAPA SAWIT BERMOTOR Reky Kurnia Widhi, Andreas; Nugroho, Oktavianus Ardhian; Kumbarasari, Shanti
Infotekmesin Vol 16 No 1 (2025): Infotekmesin: Januari 2025
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v16i1.2452

Abstract

In the oil palm plantation industry, several motorized palm oil harvesting equipment already exist in the palm oil industry market. Several motorized palm harvesting equipment, such as STIHL PC 70 and Tanika TS-5, are on the market. These two machines are rarely used because the tool's price is still high compared to the manual method. One part that makes both tools expensive is the gearbox. In addition, this part is the most often damaged so it requires a long repair time and increases the time to harvest oil palm. This research aims to design a gearbox for oil palm harvesting equipment that is low-cost, lightweight, and tough. The Quality Function Deployment (QFD) method was chosen to prototype the palm oil harvesting gearbox. The results of this research obtained a prototype gearbox that is lightweight and has a tough mechanical system. In addition to its manufacture, which is carried out independently and using local materials, the production cost of the gearbox is low, even when it is still in prototype form.
The Box-Behnken Response Surface Methodology Approach to Optimize Tensile Strength Load in Resistance Spot Welding Using SPCC-SD Steel Mulyadi, Dodi; Amir, Amir; Cepi Budiansyah, Ade; Sukarman, Sukarman; Khoirudin, Khoirudin; Arif Wibowo, Ludvi; Kumbarasari, Shanti
Jurnal Teknik Mesin Mechanical Xplore Vol. 4 No. 2 (2024): Jurnal Teknik Mesin Mechanical Xplore (JTMMX)
Publisher : Mechanical Engineering Department Universitas Buana Perjuangan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36805/jtmmx.v4i2.6090

Abstract

This article describes an experimental investigation into optimizing spot welding resistance (RSW) using a spot-welding machine equipped with a dual-electrode Pressure Force System (PFS). The optimization procedure entails the incorporation of SPCC-SD (JIS G 3141), a low-carbon steel that finds extensive application in the automotive sector. With the widespread use of SPCC-SD steel, RSW is an essential process in the automotive industry for assembling body components. This study employs the Box-Behnken Response Surface Methodology (Box-Behnken-RSM) to optimize the tensile strength load (TS-load), a critical parameter in RSW, through a meticulous analysis of the interplay between Holding Time, Squeezing Time, Welding Current, and Welding Time. Through the methodical design of experiments, the collection of Tensile Strength Load data, and the application of statistical modeling via RSM, this study employs SPCC-SD steel to determine the optimal values for these variables in RSW. The results above readily offer a valuable understanding of the most significant determinants and their interrelationships, thus facilitating advancements in welding methodologies and quality control in the automotive manufacturing sector. This study employs the Box-Behnken Response Surface Methodology to investigate the impacts and interrelationships of different parameters thoroughly. It aims to enhance the TS-load using SPCC-SD steel during the resistance spot welding procedure. This research contributes to advancing welding methodologies employed in the automotive manufacturing sector.
ELECTROPLATING DRYING TIME MINIMIZATION THROUGH BOLT DRYER MACHINE Galang D.K, Antonius; Wikantyasa, Arya Sena; Bagaskara, Johannes Christian; Kumbarasari, Shanti; Wibowo, Yohanes T.
AUSTENIT Vol. 14 No. 2 (2022): AUSTENIT: October 2022
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.53893/austenit.v14i2.5445

Abstract

One of the steps after the electroplating/coating process on the product is the drying process. In Micro, Small and Medium Enterprises, the drying process on CIV KG 0741 bolts with a diameter of 10 mm and a length of 20 mm requires a drying time of 6 hours. Drying simply and naturally has limitations, requiring a large drying area depending on the weather, time and temperature, which cannot be controlled. A simple automatic dryer is needed using a single-phase electric power source and simple and ergonomic maintenance methods to obtain a quality product with a measurable drying duration. Design and analysis of drying on the dryer. The dryer with dimensions of 680 x 480 x 967.12 mm3 has a mass of 21.94 kg with a drum capacity of 20 kg. The motor propulsion used is 1 HP, 5.08 Nm of torque and capable of rotating at 1500 rpm with an effort of 39296.66 Joules. The dryer can dry as much as 20 kg of bolts in 5 minutes faster than solar energy, with a drying time of 15 minutes to 1 hour.
Co-Authors Agung Wahyudi Biantoro Amir Amir Arif Wibowo, Ludvi Bagaskara, Johannes Christian Bambang Setiadi Basyir Rantawi , Azhar Cepi Budiansyah, Ade Dewata, Amadea Widi Dodi Mulyadi Dodi Mulyadi Erwin Suryana Galang D.K, Antonius Khoirudin Khoirudin, Khoirudin Krisstyoko, David Hendra Leksi Siregar , Ahdiat Nana Subarna, Nana Nugroho, Theodorus Argo Oktavianus Ardhian Nugroho Omachi, Moric Priyadi, Laksana Ari Hadi Rahadiansyah, Rinji Rahardja, Istianto Budhi Reky Kurnia Widhi, Andreas Saputra , Hendra Sedu Kemie, Silvester Subekti Subekti Sukarman Sukarman Wibowo, Eko Sulistyo Wibowo, Yohanes T. Wikantyasa, Arya Sena