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Logic : Jurnal Rancang Bangun dan Teknologi
Published by Politeknik Negeri Bali
ISSN : 1412114X     EISSN : 25805649     DOI : -
Core Subject : Science, Education,
Computer Science & IT Education
Logic : Jurnal Rancang Bangun dan Teknologi is a peer-reviewed research journal aiming at promoting and publishing original high quality research in all disciplines of engineering and applied technology. All research articles submitted to Logic should be original in nature, never previously published in any journal or presented in a conference or undergoing such process across the world. All the submissions will be peer-reviewed by the panel of experts associated with particular field. Submitted papers should meet the internationally accepted criteria and manuscripts should follow the style of the journal for the purpose of both reviewing and editing.
Arjuna Subject : -
Articles 265 Documents
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ANALISIS PENGGUNAAN ENERGI LISTRIK PADA PROSES PRODUKSI DI PT BALI MEI SHO I Made Aryasa Wiryawan; I Ketut Ta; Kadek Mexy Sambara
Logic : Jurnal Rancang Bangun dan Teknologi Vol 16 No 3 (2016): November
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (167.763 KB)

Abstract

Energi listrik merupakan suatu komoditas yang penting untuk melakukan segala hal di era yang serba modern ini.Namun, seiring bertambahnya kebutuhan hidup manusia dan perkembangan teknologi yang sangat pesat menyebabkan penggunaan energi listrik semakin banyak, oleh karena itu penghematan energi listrik harus dilakukan agar kehidupan selanjutnya dapat terjamin.Pada PT Bali Mei Sho terdapat 2 departemen yang memiliki karakter penggunaan energi listrik yang berbeda. Penggunaan energi listrik di setiap bulan pada tahun 2015 mengalami kenaikan dan penurunan sesuai dengan nilai produksinya, namun pada bulan juli-agustus terdapat penyimpangan yang dapat disebabkan oleh banyak hal yaitu dari manajemen hingga perilaku terhadap kelistrikannya. Oleh karena itu beberapa usaha harus dilakukan untuk menekan pengeluaran salah satunya dengan penghematan energi listrik yang diawali dengan menganalisis keadaan penggunaan energi listriknya.
PENGARUH PENAMBAHAN KAPUR TERHADAP NILAI PLASTISITAS TANAH LEMPUNG DI KABUPATEN FAKFAK PROPINSI PAPUA BARAT Muhammad Yunus; Irwan Rauf
Logic : Jurnal Rancang Bangun dan Teknologi Vol 18 No 1 (2018): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (425.968 KB) | DOI: 10.31940/logic.v18i1.785

Abstract

Stabilisasi tanah dengan menggunakan kapur merupakan salah satu metode stabilisasi tanah kimiawi yang paling populer dan paling banyak digunakan di Indonesia, hal ini disebabkan material kapur yang tidak susah diperoleh dan harganya relatif murah. Kondisi jalan di daerah Kabupaten Fakfak banyak mengalami kerusakan, hal ini berkaitan dengan kondisi tanah dasar (subgrade) jalan yang berupa lapisan tanah lempung. Salah satu jenis tanah lempung yang tidak memenuhi syarat adalah tanah lempung yang memiliki nilai plastisitas yang tinggi, karena memiliki potensi pengembangan yang besar dan daya dukung yang rendah. Penelitian ini bertujuan untuk menentukan nilai plastisitas tanah lempung di Kabupaten Fakfak yang telah ditambahkan dengan kapur dengan persentase kapur sebesar 4%, 8% dan 12%. Hasil pengujian menunjukkan tanah lempung di Kabupaten Fakfak yang telah ditambahkan dengan campuran kapur sebesar 4% diperoleh nilai batas cair (LL) = 13.45%, batas plastis (PL) = 11.88% dan nilai Indeks Plastisitas (PI) = 0.17%. Untuk campuran kapur sebesar 8% diperoleh nilai batas cair (LL) = 23.76%, batas plastis (PL) = 19.85% dan nilai Indeks Plastisitas (PI) = 3.91%. Sedangkan campuran kapur sebesar 12% diperoleh nilai batas cair (LL) = 25.16%, batas plastis (PL) = 16.20% dan nilai Indeks Plastisitas (PI) = 9.28%.
EVALUASI KAPASITAS DAN WAKTU PELAYANAN PADA GERBANG TOL NUSA DUA, BADUNG – BALI Kadek Adi Suryawan; I M Suardana Kader; I N Sedana Triadi
Logic : Jurnal Rancang Bangun dan Teknologi Vol 15 No 1 (2015): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (64.197 KB)

Abstract

Penelitian evaluasi kapasitas dan waktu pelayanan ini dilakukan pada gerbang tol Nusa Dua yangmerupakan salah satu pintu masuk bagi kendaraan yang akan memasuki ataupun keluar dari wilayah Nusa Dua.Penelitian ini dilakukan untuk melihat kemampuan pelayanan gerbang tol dari segi besar kapasitas dan lamarata-rata waktu pelayanan pada gerbang tol Nusa Dua saat ini.Pengumpulan data pada penelitian ini dilakukandengan metode survei kelapangan untuk mencari tingkat kedatangan dan lama waktu pelayanan yang terjadipada gerbang tol Nusa Dua.Analisis data yang dilakukan pada penelitian ini adalah untuk menentukan hari danjam-jam terpadat pada Bulan Juni 2014 yang terjadi di gerbang tol Nusa Dua. Berdasarkan dari hasil survei yangdilakukan pada hari Jumat tanggal 11 Juli 2014 pukul 16.00 – 19.00 Wita, didapatkan besar kapasitas maksimalyang terjadi pada gerbang tol Nusa Dua adalah sebesar 546 kendaraan/jam, dan waktu pelayanan rata-rata padagerbang tol Nusa Dua adalah 5.51 detik/kendaraan.
ANALISA BIDANG ILMU PERENCANAAN, MENGGAMBAR DAN PRODUKSI (Kajian Pustaka) Nengah Ludra Antara
Logic : Jurnal Rancang Bangun dan Teknologi Vol 16 No 1 (2016): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (93.95 KB)

Abstract

Sains dan teknologi, sesuai dengan konstitusi UUD 1945, adalah bertujuan untuk meningkatkan kecerdasan dan kesejahteraan rakyat secara material dan spiritual. Mengenai perencanaan, merancang dan memproduksi sangat penting dalam manufaktur.Perencanaan harus didasarkan pada fakta dan data konkret dan informasi. Selain itu, juga merupakan pekerjaan mental yang memerlukan pemikiran, imajinasi dan kemampuan untuk melihat kemasa depan. Hal ini tidak hanya melukiskan gambar tapi berfungsi juga sebagai peningkat daya pikir untuk perencana. Dengan demikian, para sarjana teknik mesin harus dilengkapi dengan keterampilan desain yang mereka dapat mengekspresikan keinginan mereka karena produksi diwujudkan dari perencanaan berakar dari desain dipublikasikan melalui seminar, studi ilmiah, tes dan mencoba bahwa produk layak secara ekonomi dan berguna .perencanaan, menggambar dan produksi berkorelasi begitu erat kaitannya.
UJI KARAKTERISTIK PENYEMPROTAN BAHAN BAKAR BIODIESEL PADA NOZEL MESIN DIESEL DENGAN SISTEM INJEKSI LANGSUNG Agapito Pinto; I G B Wijaya Kusuma; I W Bandem Adnyana
Logic : Jurnal Rancang Bangun dan Teknologi Vol 15 No 1 (2015): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (243.827 KB)

Abstract

Minyak nyamplung merupakan salah satu jenis minyak nabati yang dihasilkan dari biji tanamannyamplung yang banyak tumbuh di daerah pantai, minyak yang dihasilkan dari biji nyamplung ini berpotensiuntuk digunakan sebagai pengganti bahan bakar solar pada mesin diesel. Untuk itusebagai langkah awal, studieksperimental telah dilakukan untuk menguji karakteristik semprotan minyak (spray) biodiesel melaluimekanisme menyerupai nosel injektor mesin diesel. Minyak biodiesel dari biji nyamplung yang diuji inidicampur dengan minyak solar dengan berbagai variasi, yakni 5%, 15%, 20%, 100% biodiesel, dan 100%minyak diesel. Karakteristik semprotan yang diuji dalam penelitian ini meliputi data panjang tip penetrasisemprotan (L), sudut semprotan(θ), kecepatan semprota (Uin ), dan distribusi ukuran butiran yang dibentuk padamasing - masing campuran biodiesel tersebut.. Dari pengujian yang telah dilakukan, diketahui bahwapeningkatan campuran bahan bakar biodiesel akan menghasilkan sudut semprotan (θ) yanglebih besar tapipanjang tip penetrasi semprotan (L) semakin kecil. Begitu juga kecepatan terbentuknya semprotan cenderungmelambat seiring dengan bertambahnya persentase biodiesel pada campuran minyak solar tersebut.
Posture Improvement and Stretching Treatment Based on Participatory Ergonomic Decrease Risk of Work Posture and Low Back Pain Intensity on Brick Workers in Kupang, NTT Jacob M Ratu
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 1 (2020): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (579.789 KB) | DOI: 10.31940/logic.v20i1.1775

Abstract

Low Back Pain (LBP) is widely experienced by many brick workers who generally carry out repeated physical activities of lifting-and-carrying with non-ergonomic postures. Such condition can increase the risk of work posture and LBP intensity which if continued can disrupt the continuity of production, increase the risk of injury, and reduce worker productivity. Simultaneous intervention of posture improvement and stretching is conducted with the aim of reducing the risk of work posture and LBP intensity. This research was a quasi-experimental study using pre and post test design. Nineteen males brick workers from the brick production business unit sample in Kupang City who met the eligibility criteria participated in this study. They were determined as samples using purposive sampling technique. Simultaneous improvement of posture and stretching treatment is the selected intervention model agreed upon by researchers, workers and business owners to reduce the risk of work posture and LBP intensity for 5 weeks. The risk of work posture was measured by Rapid Entire Body Assessment (REBA) while LBP intensity was measured using a modified Oswestry questionnaire. Five main activities were measured for LBP intensity i.e. lifting, standing, sitting, walking, social life and sleeping. Measurements the risk level of work posture and LBP intensity were taken before and after the intervention. The data were analyzed by paired t test with a significance level of 5%. The results showed that posture improvement and stretching treatment reduced the risk level of brick workers' work posture from the average score of 9.25 to 5.0 or a decrease of 45.95% and reduced the intensity of LBP from 3.53 to 2.54 or a decrease 28.05%. The highest decrease in the pain intensity was found during sleep i.e. 39.19% and the lowest during lifting activity i.e. 15%. The conclusion is the improvement of posture and stretching treatment base on participatory ergonomic can reduce the risk of work posture and LBP intensity of brick workers.
Redesign of Mobility Aids for Spastic Diplegic Cerebral Palsy Children Through Collaboration Among Academics - Medical Devices Industry and User Intitutions Lobes Herdiman IPM; Susy Susmartini; Taufiq Rochman
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 1 (2020): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (893.886 KB) | DOI: 10.31940/logic.v20i1.1725

Abstract

Cerebral palsy (CP) children are part of the neuro disability spectrum in impaired brain function. The etiological understanding of CP children for primary prevention and early treatment can reduce the effects of damage to brain function. CP children with cerebral diplegia are motor developmental disorders caused by damage to the brain characterized by weakness in the lower limbs heavier than the upper limbs. The walker product is designed through a universal design approach to provide as much as possible mobility to CP children in general. A universal design approach to the walker products through the triple helix collaboration included academic, medical devices industry and user institutions. Three subjects with spastic CP cerebral diplegia children underwent gait training using a walker. Gait performance (continuous walking distance, and maximum and comfortable walking speed) and energy expenditure are measured at the end of the 1-week training session. The purpose of the pediatric walker redesign is to facilitate mobilization of the position of the child's body CP in the anterior and posterior positions. The walker design can be removed from the raft back and forth from both sides at the front. At a certain time, the walker can be positioned behind the user according to the recommendations of some physiotherapy practitioners. This design also facilitates the position of CP children in order to be more precise, reducing double support during ambulation and increasing walking speed. The anterior-posterior walker as an ADVANCED walker for CP children provides the most appropriate position because it provides the best gait pattern and consumes less energy.
Design of Arrangement of Working Time to Increase Productivity of the Workers by Using Flat Iron at Garment “A” I Made Anom Santiana; M. Yusuf
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 1 (2020): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (527.731 KB) | DOI: 10.31940/logic.v20i1.1788

Abstract

The garments businesses in Bali grow quickly in line with the growth of tourism industry. These are proven by presence of many garment businesses in big scale investment with hundreds of workers or small -scale investments of home industries. However, the level of awareness and the failure of the business managers to seek for comfort, health, and safety for their workers remains very low. One of many problems that important in garment business for the workers in flat iron is musculoskeletal disorder. Generally, the working position is in the standing position for long time, and the hot temperature of environment resulted in the flat iron radiation. Workers that use flat iron work 9 hours per day including the lunch break and 7 day a weak, except for the big holidays or when there is less order. They start working at 08.00 a.m. until 17.00 p.m. with lunch break at 12.00 until 13.00 p.m. Arrangement for the working time and the break time, holiday, working shifts, are one of the many aspects in organization that needs to be paid attention because by arranging the working time, it may make them comfortable, safe, healthy, so it can increase the work productivity. Increasing the working time will cause the accumulating fatigues and in turn, it will decrease the productivity. Therefore, to solve that problems, this research has been done experimentally by arranging the working time, namely by providing 10 minute-breaks every two hours of working time while drinking tea. This research was conducted to 12 female workers who used flat iron in “A” garment, of Tabanan Regency, Bali, with treatment by subject design. The indicated workload was measured by heart rate with pulse meter. Musculoskeletal disorder was predicted by Nordic Body Map questionnaire. Data were analyzed by t test on 5% significant. The result of analysis showed that there was a decrease of workloads and the subjective disorders significantly before and after treatment as well as the increase of the working productivity significantly (p<0,05).
Effect of Material Hardness on Energy Dissipation From a Moving Crack in First Mode Seyedmorteza Latifi
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 1 (2020): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1449.005 KB) | DOI: 10.31940/logic.v20i1.1777

Abstract

Fatigue crack growth is the reason of failure of mechanical parts under cyclic loading. When a crack forms in material a plastic zone surrounds the tip of the crack. In this paper, a model based on HRR singularity is utilized to find the strain energy dissipation from a crack tip. Material hardness effect on the dissipated strain energy is investigated. It is found that the strain energy dissipation decreases with hardness. The results also show the direct logarithmic relation between the stress intensity factor and strain energy dissipation of fatigue crack propagation.
Graduation Prediction of S1 Industrial Engineering Students IST AKPRIND by Using Data Mining Method Agus Hindarto Wibowo
Logic : Jurnal Rancang Bangun dan Teknologi Vol 20 No 1 (2020): March
Publisher : Pusat Penelitian dan Pengabdian kepada Masyarakat (P3M) Politeknik Negeri Bali

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (653.263 KB) | DOI: 10.31940/logic.v20i1.1580

Abstract

Abstract. There is data of students who experience Drop Out which raises the curiosity in IST AKPRIND's industrial engineering study program on students’ graduation patterns. It is necessary to have research on how to classify the data held by industrial engineering study programs in order to obtain students’ graduation patterns as evaluation material in the administration of study programs. This study also produced a design to set the goals of Educational Data Mining, this case as a student modeling that would be achieved by predicting using the Decision Tree method. The final results showed a mismatch between the general information data passed and the drop out of the rule obtained using the decision tree algorithm in the Rapidminer software which is shown by an accuracy of 95.83%. This value indicates that there is a match between the prediction of student identity data with the rule obtained using the decision tree algorithm.

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