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All Journal Jurnal Ilmiah Teknik Elektro Komputer dan Informatika (JITEKI) ComTech: Computer, Mathematics and Engineering Applications Stabilita : Jurnal Ilmiah Teknik Sipil Fakultas Teknik Universitas Halu Oleo Kendari Jurnal Tekno Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa Dan Inovasi Teknika
Kasih, Tota Pirdo
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Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Transportation

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The Effect of 5K2S Implementation to the Opportunities of Increasing Productivity and Workplace Improvement in PT. Andesen Jaya Plastik Rachmatullah, Rachmatullah; Kasih, Tota Pirdo; Purba, Hardi Humiras
ComTech: Computer, Mathematics and Engineering Applications Vol 6, No 4 (2015): ComTech
Publisher : Bina Nusantara University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21512/comtech.v6i4.2197

Abstract

The success of Japanese companies in improving productivity is because they have a culture and a high work ethic to the application of KAIZEN management system. One such application is the Cultural 5S (Seiri, Seiton, Seiso, Seiketsu, Shitsuke). In the Astra group, 5S is known as 5K2S (Order, neatness, cleanliness, sustainability Discipline, Safety, and Service). This study aims to assess the success of the application of the system 5K2S of PT. Andesen Jaya Plastik relating to opportunities for productivity. The method used isquantitative method with a descriptive study. The type of data used is primary and secondary data. While the techniques used in collecting the data are interviews, questionnaires, and literature studies. The number ofrespondents was 31 employees. Analysis of the data used is descriptive and multiple linear regression analysis. The real success rate reachs 82.24% at the stage of familiarization (effective) and they have not yet advanced tothe next stage (prevention). The response of employees is between the Agree and Strongly Agree that is 4.11 point. The correlation between 5K2S to the opportunity of significant Productivity Improvement is Seiri/Order,Seiso/neatness, and Seiketsu/Sustainability.
PENGARUH PENAMBAHAN FLY ASH TYPE C PADA BETON DENGAN AGGREGAT SLAG NIKEL DAN BOTTOM ASH Mustika, Wayan; Kasih, Tota Pirdo; Aswad, Nini H
STABILITA || Jurnal Ilmiah Teknik Sipil Vol 12, No 2 (2024):
Publisher : Fakultas Teknik Jurusan Sipil Universitas Halu Oleo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55679/jts.v12i2.48704

Abstract

ABSTRAK Fly ash memiliki sifat pozzolan, dapat mengikat jika bereaksi dengan air. Proses peleburan biji nikel menghasilkan limbah berupa slag yang jumlahnya sangat besar. Bottom ash merupakan butiran material yang berada pada dasar tungku pada proses pembakaran batu bara untuk pembangkit listrik tenaga uap (PLTU) batu bara, bagian halus butiran terbang ke udara berupa fly ash. Tujuan yang hendak dicapai dari penelitian ini adalah untuk mengetahui karakteristik agregat limbah yaitu slag nikel dan bottom ash untuk bahan pembuatan beton dan mengetahui pengaruh fly ash type C sebagai bahan tambahan (additive) pada beton terhadap workability dan nilai kuat tekan beton. Hasil penelitian menunjukkan bahwa material limbah slag nikel dan bottom ash secara umum layak dan dapat digunakan sebagai bahan pembuatan beton, kecuali nilai serapan air bottom ash yang relatif tinggi yaitu 6,16 % melebihi batas serapan air yang dipersyaratkan yaitu maksimal 3%. Pemanfaatan fly ash type C sebagai bahan tambahan (additive) pada beton meningkatkan workability beton segar, nilai slump test semakin meningkat seiiring dengan penambahan persentase fly ash. Nilai kuat tekan beton meningkat seiring dengan penambahan persentase fly ash sebagai additive sampai kadar 30% dengan nilai kuat tekan 29,87 MPa, selanjutnya penambahan fly ash mengakibatkan kuat tekan beton menurun. ABSTRACT Fly ash has pozzolanic properties and has the ability to form chemical bonds with water. The process of smelting nickel ore produces a substantial amount of slag. Fly ash is the airborne residue of bottom ash, which settles at the bottom of the furnace during the combustion of coal in coal-fired steam power plants (PLTU). The objective of this study is to assess the characteristics of nickel slag and bottom ash when used in concrete, as well as to examine the impact of using type C fly ash as a concrete additive on both workability and compressive strength. The analysis determined that nickel slag and bottom ash waste can be employed in the production of concrete, despite the fact that the water absorption value of bottom ash, which stands at 6.16%, beyond the prescribed limit of 3%. Type C fly ash enhances the workability of fresh concrete and increases the value of the slump test. Fly ash initially increases the compressive strength of concrete by 30% to a value of 29.87 MPa, but subsequently reduces it.
The Development of Conceptual Design of Nurse assistance Robot’s Exterior with Ergonomic Approach Dwinandana, Tubagus Ahmad; Kasih, Tota Pirdo; Puji, Muhammad Nurul
Jurnal Asiimetrik: Jurnal Ilmiah Rekayasa & Inovasi Volume 6 Nomor 2 Tahun 2024
Publisher : Fakultas Teknik Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/asiimetrik.v6i2.6320

Abstract

Nurses are human resources who have an important role in medical installations, especially hospitals. Nurses have various tasks such as assisting doctors in examining, treating and serving patients, and other tasks such as administration. With these various tasks, physical and mental fatigue often occurs in nurses. To reduce the workload, robots have been used in hospitals around the world, especially in hospitals in Indonesia. This research aims to produce an initial concept for the exterior design of a nursing assistant robot using an ergonomics approach. The research methodology uses product design and development framework, especially in conceptual design process which start from customer needs identification to design iteration. From the research it can be concluded that determining robot dimensions is based on anthropometric standards, user posture, hardware size, and so on. The main consideration in determining the size of the robot is the reach of the hand to pick up and store items, the range of the eye to see the interactive display screen.
APPLICATION OF ORTHOGONAL ARRAY L9 TO IMPROVE PRODUCTIVITY OF DIESEL DRIVE MACHINE R 175 Prihatin, Joko Yunianto; Kasih, Tota Pirdo
Teknika Vol 9 No 2 (2024): October 2024
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v9i2.389

Abstract

The R 175 diesel engine is powerful enough to drive most agricultural and plantation equipment, fisheries, and even electric generators. An example of its application in SMEs in the Sukoharjo Regency area of ??Central Java Province is processing clay mixers and printers in tile SMEs.The main problem today is that the use of the R 175 diesel engine is known not to last long or not last long; some even say it burns easily (smokes black) and is difficult to start (starting the crank), and the rpm is unstable. The main cause is the quality of the fuel misting system in the injector, which is not perfect (sometimes even dripping or clogged), only produces a mist diameter of 40mm, and uses biodiesel fuel. The aim of this research is to determine the value of increasing fog formation through optimization of the Taguchi orthogonal array L9. This research method is experimental by applying 4 factors and 3 levels to the response to the formation of fog diameter. The injector mist diameter data was subjected to statistical analysis of the Signal Noise Ratio Larger The Better (SNR LTB) and the effect value of each factor. The research results show that the value of increased fog formation achieved by the R 175 driving engine was 27.84 mm, or an increase of 68.74% from the initial condition of 40.5 mm to 68.34 mm. The factor level composition that produces the optimal fogging diameter is test number 3 A1B3C3D3, namely the fuel viscosity value using dexlite, pump lever distance 20cm, pumping time 15 times/30 seconds, nozzle setting +3 revolutions.
PENGARUH JUMLAH SUDU VAWT (VERTICAL AXIS WATER TURBINE) TERHADAP DAYA OUTPUT PLTA PIKO HIDRO Purwono, Arif Hidayat; Kasih, Tota Pirdo
Teknika Vol 9 No 2 (2024): October 2024
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v9i2.391

Abstract

Perkembangan perangkat listrik modern yang semakin hemat energi, memberikan peluang untuk dikembangkannya pembangkit listrik berskala kecil. Indonesia yang beriklim tropis, dan memiliki curah hujan yang tinggi bisa dimanfaatkan sebagai sumber tenaga alternatif memberikan potensi dikembangkannya pembangkit listrik skala piko di masa depan. Penelitian ini akan mengembangkan turbin skala piko berjenis Turgo berdiameter 380 mm dengan memvariasikan jumlah sudu 8, 12, dan 16. Penelitian menggunakan pengujian eksperimental melalui prototipe alat uji Vertical Axis Water Turbine (VAWT) skala laboratorium dengan menggunakan debit aliran yang tetap sebesar 18 l/min. Dengan menghubungkan rotor turbin dengan generator menghasilkan putaran rotor turbin sebesar 515,3 rpm pada sudu turbin 8, mengalami kenaikan 14% bila dibanding sudu 12 dan kenaikan 17% bila dibanding dengan sudu turbin 16. Hasil putaran rotor memiliki tren yang sama dengan hasil tegangan listrik dimana tegangan listrik pada turbin 8 menghasilkan 12,4 Volt pada sudu 12 dan 16 mengalami peningkatan 9 % dan 10 %. Hasil daya output generator terbaik sebesar 13,23 Watt didapatkan dengan menggunakan sudu 12. Hasil terbaik ini dapat direkomendasikan dalam pemilihan jumlah sudu pada Turbin Turgo VAWT berskala Piko.
Design and Implementation of an Autonomous Service Robot for Hospital Isolation Room Using Robot Operating System 2 and Navigation 2 Muhammad Nurul Puji; Dwinandana, Tubagus Ahmad; Kasih, Tota Pirdo; Lee, Edmond; Kamalo, Giovanni Benedict Davin; Anthony, Patrick; Kunaifi, Matthew
Jurnal Ilmiah Teknik Elektro Komputer dan Informatika Vol. 10 No. 4 (2024): December
Publisher : Universitas Ahmad Dahlan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26555/jiteki.v10i4.30353

Abstract

Healthcare-associated infections or nosocomial infections are infections that are acquired after admission to a hospital. This type of infection extends the length of stay, increases the cost of healthcare, and increases the mortality rate. This infection is caused by pathogens that are present in the hospital environment. These pathogens are transmitted when a hospital worker comes in contact with a patient or their environment. Thus, it is important to reduce the contact between them to stop the spread of pathogens. To reduce contact an autonomous service robot is utilized to deliver food or medicine to patients. This robot will be able to go to multiple target positions autonomously and will be controlled by a web application. Furthermore, the robot can provide a video call if the patient needs help. The robot platform used is the turtlebot3 and the software framework used is robot operating system 2 humble. The inflation radius and cost scaling parameters are tuned to increase the navigation success rate. Problems encountered during testing include glass windows not being detected by lidar, noisy lidar data, and obstacles being too low to be detected. These problems are solved using tape, costmap and laser filter, and keepout zones respectively. To evaluate the performance and capability of the app the robot is tested using a set of target locations entered on the app. During testing poor odometry causes localization error that causes recovery behaviors. The final system has a navigation success of 95%, with an average navigation speed of 0.17 m/s, and an average distance to target of 0.0587 m.
PENGARUH KONDUKTIVITAS PANAS DAN MEDIA PENDINGIN TERHADAP SUHU MAKSIMAL DAN LAJU PENDINGINAN PADA PROSES INDUCTION HEATING BAJA AISI 4140 DAN 4340 Haikal, Haikal; Kasih, Tota Pirdo; Atmoko, Nugroho Tri
Teknika Vol 10 No 1 (2025): April 2025
Publisher : Pusat Penelitian dan Pengabdian Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52561/teknika.v10i1.390

Abstract

Pemanas induksi merupakan proses pemanasan modern yang bebas kontaminasi, bebas emisi sehingga pemanas induksi sangat dikembangkan dalam teknologi heat treatment. Penelitian ini berfokus pada pengaruh konduktivitas material baja AISI terhadap laju pemanasan, suhu maksimal serta laju pendinginan yang terukur ketika material uji dipanasi menggunakan mesin pemanas induksi (induction heating). Dua buah material AISI yakni AISI 4140 dan AISI 4340 digunakan dalam penelitian ini. Material AISI 4140 memiliki nilai konduktivitas termal 42,6 W/m.K dan AISI 4340 memiliki nilai konduktivitas termal 44,5 W/m.K. Material tersebut dipanaskan menggunakan pemanas induksi selama 15 menit kemudian didinginkan menggunakan media udara dan air. Pengukuran suhu dilakukan pada material memanfaatkan thermocouple yang dikombinasi dengan Arduino sehingga pengukuran suhu dapat direkam secara real time . Berdasarkan pengambilan data suhu pada spesimen ketika dipanaskan menggunakan pemanas induksi menunjukkan bahwa suhu maksimal yang terukur pada material uji yakni 747,75°C ketika material AISI 4140 akan tetapi jika menggunakan material AISI 4340 menghasilkan suhu maksimal yang lebih tinggi yakni 754,5°C. Sedangkan jika ditinjau dari laju pendinginan, laju pendinginan Baja AISI 4340 sebesar 0,14°C/s pada media pendingin udara dan 5,27°C/s pada media pendingin air. Sedangkan Baja AISI 4140 menghasilkan laju pendinginan 0,08°C/s pada media pendingin udara dan 4,75°C/s pada media pendingin air. Penurunan suhu rata-rata pada media pendingin udara antara Baja AISI 4140 dengan Baja AISI 4340 memiliki perbedaan sebesar 0,06°C/s dan pada media pendingin air memiliki perbedaan sebesar 0,52°C/s. Baja AISI 4340 lebih cepat membuang panas sedangkan Baja AISI 4140 lebih lama menyimpan panas. Hal tersebut mengindikasikan bahwa semakin besar konduktivitas panas suatu material maka semakin tinggi suhu yang terukur dan laju pendinginan semakin cepat.
Risiko Postur Kerja Pemeras Sari Kedelai Pabrik Tahu Khas Bandungan Berdasarkan Metoda Rapid Entire Body Assessment (REBA) Zuraida, Rida; Kasih, Tota Pirdo
Jurnal Tekno Vol. 20 No. 2 (2023): jurnal Tekno
Publisher : Direktorat Riset dan Pengabdian pada Masyarakat Universitas Bina Darma

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33557/jtekno.v20i2.2865

Abstract

Penelitian ini dilatarbelakangi dari pengamatan awal pada postur kerja pemeras sari kedelai di salah satu pabrik tahu Bandungan, Kabupaten Semarang yang masih dilakukan secara manual. Tujuan penelitian adalah menganalisis risiko postur kerja karyawan saat memeras sari kedelai di pabrik tahu Bandungan – Semarang yang masih dilakukan secara manual, dan merancang usulan perbaikan proses untuk mengurangi risiko yang terjadi. Melalui melakukan pengamatan langsung dan pengaplikasian metoda REBA untuk penilaian risikonya, diperoleh skor REBA = 10 atau dikategorikan sebagai berisiko tinggi. Alat bantu selanjutnya dirancang untuk memperbaiki postur membungkuk, pengerahan tenaga saat memeras, dan posisi tangan. Penilaian risiko postur kerja saat menggunakan alat bantu yang telah menunjukkan skor REBA sebesar 5 untuk posisi awal penggunaan alat dan posisi akhirnya. Sehingga dapat dikatakan risiko telah menurun dari tinggi menjadi sedang. Namun perlu dikembangkan rancangan agar posisi tangan dan leher dapat lebih nyaman bagi pekerja.
Co-Authors Anthony, Patrick Aswad, Nini H Atmoko, Nugroho Tri Dwinandana, Tubagus Ahmad Haikal Haikal Humiras Hardi Purba I Wayan Mustika Joko Yunianto Prihatin Kamalo, Giovanni Benedict Davin Kunaifi, Matthew Lee, Edmond Muhammad Nurul Puji Puji, Muhammad Nurul Purwono, Arif Hidayat Rachmatullah Rida Zuraida