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Agus Hindarto Wibowo
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rekavasi@akprind.ac.id
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Jl. Kalisahak No. 28 Kompleks Balapan Tromol Pos 45 Yogyakarta 55222
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INDONESIA
Jurnal Rekavasi
Published by Institut Sains dan Teknologi AKPRIND
ISSN : -     EISSN : 23387750     DOI : https://doi.org/10.34151/rekavasi
Core Subject : Science, Engineering,
Computer Science & IT Engineering Industrial & Manufacturing Engineering
Jurnal Rekavasi merupakan open acces journal yang diterbitkan Prodi Teknik Industri, Institut Sains & Teknologi AKPRIND Yogyakarta. Jurnal ini diterbitkan 2 (dua) kali dalam setahun, setiap bulan Mei dan Desember.
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 208 Documents
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USULAN PERBAIKAN PERENCANAAN PERSEDIAAN BAHAN PAKAN KONSENTRAT HEWAN TERNAK SAPI MENGGUNAKAN METODE LOT FOR LOT (LFL) LEAST UNIT COST (LUC) DAN LEAST TOTAL COST (LTC) PADA UD. SADEWA FARM Pratama, Ero Pandu Jaya; Mawadati, Argaditia; Susetyo, Joko
Jurnal Rekavasi Vol 11 No 1 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i1.4375

Abstract

UD. Sadewa Farm is a business engaged in animal husbandry and animal trading, especially cattle. After observing and interviewing, it was found that the problems that occurred at UD. Sadewa Farm, namely the planning of concentrate feed supplies that are not optimal, where there is often a shortage and excess of feed so that it can interfere with the process of raising cattle. This study aims to propose an improvement in optimal supply planning of concentrate feed ingredients using the Lot for Lot (LFL), Least Unit Cost (LUC) and Least Total Cost (LTC) methods. In addition, this study also aims to provide suggestions for improvements regarding planning for optimal concentrate feed supply control at UD Sadewa Farm. The use of cattle feed at UD Sadewa Farm uses Calfeed 131 Concentrate feed. In this study, three inventory planning methods were used, namely by using Lot for Lot (LFL), Least Unit Coast (LUC) and Least Total Cost (LTC) measurements. These three methods are used to overcome the excess and shortage of Calfeed 131 concentrate feed ingredients. Based on the results of the research that has been done, the Least Total Cost (LTC) method is the most optimal planning method used at UD Sadewa Farm. With the use of the Least Total Cost (LTC) method, there are 4 frequencies of concentrate feed purchases for one year with the first order being 278 sacks for the period January-March, 252 sacks April-June, 254 sacks for the July-September period, and 264 sacks for the October-December period with a total Total Cost IDR 1,024,054
REDESAIN PLASTIC SHREDDER MENGGUNAKAN METODE DFA (DESIGN FOR ASSEMBLY) restu, fedia
Jurnal Rekavasi Vol 11 No 1 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i1.4359

Abstract

The large amount of plastic waste in landfills of around 20% in Batam City has made academics look for ideas on how to minimize the production of plastic waste, especially for households. In order to be able to manually process the plastic shredder itself, a waste shredding machine was created with another name plastic shredder. Where this plastic shredder has been produced in prototype form which aims to improve the design and can simulate in small quantities. The product design process is the initial stage for planning the product or tool to be designed. At the design stage, errors must be minimized. If in the implementation of manufacturing there is a problem. This will take a long time. One method that has been developed to facilitate this is Design for Assembly (DFA). DFA aims to determine the assembly time for each component, so that assembly difficulties can be minimized before the components are produced. This will result in reduced assembly time required to assemble a product. With the Design For Assembly (DFA) method, it will get a simpler time in assembling a product. In the first stage, it took 414.77 seconds with a total of 96 components which were seen in the manual handling and manual insertion tables which were translated into the worksheet analysis, in the second stage the same thing was done as in stage 1, it obtained 266.25 seconds with a total of 74 components. By using DFA several components have been eliminated in the form of reduced bolts and removed side angels.
PENGEMBANGAN STRUCTURAL EQUATION MODELLING PADA ANALISIS FAKTOR KONTRIBUSI MASYARAKAT SURABAYA DALAM PENGELOLAAN SAMPAH POLYETHYLENE TEREPHTHALATE Yulianti, Elisabeth; Nuha, Hilyatun
Jurnal Rekavasi Vol 11 No 2 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i2.4380

Abstract

Kota Surabaya merupakan kota padat penduduk kedua setelah Jakarta. Kepadatan penduduk tersebut dapat mempengaruhi tingkat kebersihan lingkungan kota Surabaya. Salah satu faktor dikarenakan adanya kebiasaan masyarakat sebagai konsumen yang selalu menghasilkan sampah pada tiap aktivitas yang dilakukannya. Sampah botol plastik PET merupakan salah satu sampah dengan frekuensi terbesar yang dihasilkan oleh masyarakat. Hal ini dapat menjadi masalah bagi seluruh elemen baik masyarakat maupun pemerintah kota apabila tidak adanya kesadaran dan kontribusi penuh dari masyarakat untuk membantu mengelola sampah PET. Menanggapi permasalahan tersebut oleh karena itu pada penelitian ini membahas mengenai faktor – faktor yang mempengaruhi kontribusi masyarakat kota Surabaya dalam pengelolaan sampah botol plastik PET pada jaringan reverse logistic hingga botol plastik tersebut diolah dan dikembalikan kepada perusahaan atau peremanufaktur. Informasi mengenai faktor – faktor yang mempengaruhi kontribusi masyarakat dapat diperoleh dari sebaran kuesioner dan tahap wawancara serta didukung dengan data – data yang diperoleh dari pemerintah kota baik dari Dinas Lingkungan Hidup, Bank Sampah Induk, dan Bank Sampah Unit. Hasil dari jawaban responden terhadap kuesioner yang telah disebar, selanjutnya akan diolah dan diuji keakuratan dengan menggunakan uji validitas dan uji reliabilitas yang kemudian akan diolah kembali menggunakan metode Structural Equation Modelling (SEM) untuk mengetahui hubungan antara variabel dan indikatornya. Metode SEM dapat dilakukan dengan berbagai macam software salah satunya software SMARTPLS. Kata Kunci : Botol plastik PET; Sampah; Metode SEM; Reverse Logistic
Analisis Beban Kerja Mental Operator Produksi Terhadap Produktivitas PT SWA I Dengan Metode DRAWS Yoggi Aldi Trisnanto; Aloysius Tommy Hendrawan; Halwa Annisa Khoiri
Jurnal Rekavasi Vol 12 No 1 (2024)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v12i1.4460

Abstract

PT SWA I is a manufacturing company operating in the textile industry. There are 3 production process departments, namely Pre Treatment, Dyeing, and Finishing. The company has a production target of 300,000 yards per day, which will be exported to various countries as well as the local market. The high level of work pressure is often experienced by operators due to the demanding production targets and the requirement to meet the company's quality standards to ensure optimal productivity. Therefore, workload is a crucial aspect that needs to be considered. This study utilizes the Defence Research Agency Workload Scale (DRAWS) method to measure the workload. The DRAWS method consists of 4 indicator categories: Input Demand (ID), Central Demand (CD), Output Demand (OD), and Time Pressure (TP). Based on the DRAWS method, the total workload results for the Pre Treatment, Dyeing, and Finishing process departments are 75.06% (overload), 75.55% (overload), and 68.56% (overload), respectively, with the most dominant indicators being Output Demand, Central Demand, and Time Pressure. The processing and analysis of data show that the operator's workload is not optimal, especially in categories related to physical tasks, information interpretation, and time pressure. To improve and optimize the production process, it is suggested to enhance teamwork, improve information sheets, and optimize the system during the operator's working hours. This will result in better and more efficient production processes.
Evaluasi Lingkungan Kerja Fisik Dengan Menggunakan Metode Hirarc Di CV Berdikari Verry, Verry hermawan; Hendrawan, Aloysius Tommy
Jurnal Rekavasi Vol 11 No 2 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i2.4467

Abstract

Penelitian ini dilakukan di CV Berdikari Magetan. perusahaan bergerak di bidang jasa, suara kebisingan di perusahaan masih berdampak terhadap karywannya, faktor yang mempengaruhi suara kebisingan yaitu pada mesin produksi yang tidak sesuai dengan standar 85 dB dan setiap lingkungan kerja masih diatas rata-rata, ruang kantor 92,56 dB, ruang produksi 86,92 dB. Hasil identifikasi tersebut dilakukan penilaian risiko, penilaian risiko untuk mengetahui berapa tingkatan dari bahaya yang teridentifikasi, semakin tinggi tingkat risiko maka semakin diutamakan untuk dilakukan pengendalian risiko. Pencahayaan terhadap lingkungan di CV Berdikari diperoleh rata-rata 100 Lux, hasil terhadap lingkungan CV Berdikari di peroleh 66,2 Lux, oleh karena itu tingkat kebisingan perlu dikendalikan untuk dapat menghindari kejadian yang dapat mengganggu proses produksi dan kesehatan karywan, karena dalam proses pemotongan dampak suara yang keras dapat memungkinkan mengganggu pendengaran dan kebisingan biasanya dapat terjadi akibat adanya gesekan pada mesin yang sedang beroprasi di lingkungan kerja.
PERANCANGAN SISTEM INFORMASI PRODUKSI CV SEMBADA ERA PERKASA DENGAN MENGGUNAKAN METODE THROWAWAY PROTOTYPING AFRIANDI; Hunusalela, Zeny Fatimah; Alifah, Siti
Jurnal Rekavasi Vol 11 No 2 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i2.4472

Abstract

CV Sembada Era Perkasa merupakan perusahaan manufaktur yang bergerak dibidang usaha pembuatan komponen otomotif. Perusahaan ini menghasilkan berbagai macam produk seperti clamp, bar, hook side stand, bar komp side stand, wire, guard, hook foot k45 dan sparepart lainnya. Permasalahan Yang Terjadi pada CV Sembada Era Perkasa adalah Mengenai ketidaktersediaan sistem informasi pada bagian produksi dan permintaan persediaan masih dicatat pada form kertas kemudian baru disalin kembali ke buku laporan persediaan oleh bagian gudang, sehingga terkadang mengalami kesulitan dalam perhitungan barang dan untuk mendapatkan informasi yang diberikan tidak sesuai dengan ketersediaan barang yang ada. Tujuan penelitian ini untuk mengetahui status barang masuk dan barang keluar serta memperoleh sistem informasi manajemen yang baik pada CV Sembada Era Perkasa. Pada penelitian ini metode yang digunakan adalah throwaway prototyping. Pengolahan data barang masuk dan barang keluar yaitu pertama merancang usecase diagram, aktivity diagram dan class diagram menggunakan power designer setelah selesai. Selanjutnya merancang tampilan halaman pada prototipe dengan menggunakan software Justinmind setelah tampilan halaman selesai selanjutnya membuat program prototipe yang berbasis web dengan bahasa pemrograman yaitu html dengan menggunakan software visual studio code. Hasil yang diperoleh pada penelitian ini yaitu sistem informasi manajemen dalam bentuk prototype dan aplikasi yang didalamnya terdiri dari Login, data customer, data barang, data masuk barang, data keluar barang, dan data status laporan transaksi. Kesimpulan penggunaan metode throwaway prototyping untuk mempermudah dalam mendata stok barang, dan membuat laporan barang keluar dan barang masuk pada bagian produksi. Harapannya perusahaan dapat meningkatkan efisiensi barang, mengurangi biaya, dan kinerja produksi.
Penerapan Sistem Antrian Multi Channel -Single Phase Menggunakan Model Simulasi Untuk Optimalisasi Pelayanan Pada UMKM El Laundry Siska, Siska Pasaribu; Zaharuddin; Utama, Denny Walady
Jurnal Rekavasi Vol 11 No 2 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i2.4541

Abstract

ABSTRACT The queue process at UMKM El Laundry is a process related to the arrival of consumers who bring dirty clothes and then wait in line, then the dirty clothes are finished processing and the consumers leave the laundry. The current conditions at UMKM El Laundry are with an average number of arrivals of 20 people/day with the number of dirty clothes 20 kg/person. This has resulted in a buildup in serving consumers, where currently the service time limit applied by UMKM themselves is 8 hours/day for regular services. Data was obtained through observation for 1 month, namely in December 2022. The queuing method used is Multi-channel - single phase using Anylogic simulation. The results of calculations using the Multi-channel - single phase method show that queues occur due to lack of facilities in the process. After being analyzed using Anylogic simulation, it was proven that the queue could be minimized by adding washing machines, which were originally 3 units, to 4 units, and dryer machines, which were originally 3 units, to 4 units. So that the Queue Length which was originally 0.04 minutes became 0.94 minutes, Queue Time per agent from previously 0.50 minutes to 6.14 minutes, and service utilization which was originally 0.18 minutes to 0.75 minutes or 75% more fast in the service process, so that queues can be minimized. Keywords: MSME, Single Phase Multi Channel, Aylogic Simulation
KAJIAN PENGGUNAAN MEJA DAN KURSI ADJUSTABLE SMK NEGERI 3 MEDAN Bayu, Bayu Herman Syah; Zaharuddin; Utama, Denny Walady
Jurnal Rekavasi Vol 11 No 2 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v11i2.4543

Abstract

The success of children in learning is strongly influenced by several factors such as the teacher, tools or facilities, facilities and infrastructure, the surrounding environment. One of the educational facilities and infrastructure that supports learning that is not given enough attention is the study desks and chairs for students in class. Tables and chairs are one of the most closely related factors in improving the quality of learning. If the tables and chairs are not ergonomic, during the learning process students will easily feel tired and not focus when learning takes place.This study aims to determine the factors that influence musculoskeletal complaints in students and find out whether adjustable tables and chairs can reduce these complaints. Completion in this study using anthropometric methods.The conclusion of this study is that there are several factors that cause musculoskeletal disorders, namely non-ergonomic seating, high chairs, high tables, inappropriate sitting positions, and sitting too bent. Where the results of the study stated that each table and chair size must be in accordance with its users, so that it can be used comfortably.   Keywords: adjustable tables and chairs, musculoskeletal, anthropometry.    
PERBAIKAN KESEIMBANGAN LlINI PRODUKSI PERAKITAN ELEKTRONIK PT ’X’ DIDUKUNG SISTEM SIMULASI Primasanti, Yunita; Kohar Sulistyadi
Jurnal Rekavasi Vol 12 No 1 (2024)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34151/rekavasi.v12i1.4605

Abstract

Improving of assignment line balancing at work stations must be use to get increasing effisiency production line. The effisiency of production line can be represented by minimum number of worker to put in production, and minium idle time. The aim of research is to find improving of assembly production line and to achieve the production target into simulation system in line balancing. Line CY.14-XX is one of the production line that proude television with capacity 190 unit per hour. Time work have been measure by time study method. The first condition efficiency of production line is 70 percent with idle time is 191 second or 29 percent, and number of operating workers for producing television using 40 operator. The result of simulation system in production line shows efficiency of production line increase 81 percent with idle time is 115 seconds or 19 percen, and number of operating workers for producting television decreasing 4 operators or using 36 operators. Pursuant on simulation system result that the proposal of improvement line of balancing electronic assembly can be applied to real production system.
ANALISIS DAMPAK LINGKUNGAN PADA PROSES PRODUKSI PRODUK PAVING DENGAN MENGGUNAKAN METODE LIFE CYCLE ASSESSMENT STUDI KASUS PT. YASKA LOMBOK Husmadi, Indra Sebrian; Wibowo, Agus Hindarto; Asih, Endang Widuri
Jurnal Rekavasi Vol 11 No 2 (2023)
Publisher : Prodi Teknik Industri, Universitas AKPRIND Indonesia

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

Abstract

PT Yaska merupakan salah satu perusahaan yang bergerak di bidang manufaktur bahan bangunan. Produk yang dihasilkan dari perusahaan ini salah satunya adalah paving block, untuk produksi paving block dibutuhkan semen, pasir, air hingga energi listrik. Limbah sisa poduksi yang dominan dihasilkan adalah semen dan lumpur akibat genangan air, selain itu penggunaan air dan listrik yang berlebihan juga berdampak negatif pada lingkungan. PT Yaska hingga saat ini belum mengukur dampak lingkungan dari proses produksi yang dilakukan. Penelitian ini menganalisa dampak lingkungan menggunakan metode Life Cycle Assessment (LCA) dengan batasan gate to gate dan indikator sesuai dengan database pada aplikasi OpenLCA. Berdasarkan hasil analisa dampak lingkugan dengan LCA proses produksi paving block didominasi oleh proses pengepresan dengan nilai sebesar 8,61290E5 kg-DB eq dan nilai normalisasi sebesar 1,93790E-8 . Proses pengepresan berdampak pada kategori terbesar hingga terkecil seperti marine aquatic ecotoxicity, abiotic depletion (fossil fuels), global waming, acidification, photochemical oxidation, eurotrophication, human toxicity, terrestrial ecotoxicity, ozon layer depletion dan abiotic depletion.

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