Article Per Year (5 Year)
p-Index From 2021 - 2026
3.703
P-Index
This Author published in this journals
All Journal Journal of Engineering and Technological Sciences Transformasi: Jurnal Pengabdian Masyarakat Dinamisia: Jurnal Pengabdian Kepada Masyarakat Jurnal Sistem Teknik Industri Jurnal Riset Teknik Industri Bandung Conference Series: Industrial Engineering Science Journal Of Engineering Sciences (Improsci)
Endang Prasetyaningsih
Teknik Industri, Fakultas Teknik Universitas Islam Bandung
Religion Humanities Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences Other

Published : 28 Documents Claim Missing Document
Claim Missing Document
Check
Articles

Found 28 Documents
Search

 1   2   3 
Perencanaan Persediaan Bahan Baku dan Cadangan Pengaman untuk Produk Guide Komp Level K1AA dengan Menggunakan Model Probabilistik Sederhana Dzaldhi Yudistira Nirbaya; Prasetyaningsih, Endang
Bandung Conference Series: Industrial Engineering Science Vol. 4 No. 2 (2024): Bandung Conference Series: Industrial Engineering Science
Publisher : UNISBA Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/bcsies.v4i2.14096

Abstract

Abstarct. PT. Sinar Terang Logamjaya (PT STALLION) was legally established on September 28, 1998, engaging in the manufacturing of motorcycle spare part components. In the production process of the Guide Komp Level K1AA product, there is often a shortage in the production quantity, and defects are still encountered in the production process. Additionally, the company faces challenges related to the delayed arrival of raw materials and rejects due to non-compliance with the company's quality standards. This is because the company lacks Safety Stock (SS) that can address production interruptions resulting from the issues the company is currently facing. The proposal carried out in this study is inventory control and SS for Guide Komp Level K1AA products using the Simple Probabilistic model. The proposal stage calculates the level of service (η) and SS. The results of the calculation of η are obtained at 98.46%. So to maintain the service level based on the calculation results, the number of SS is required as many as 12 plates. The next stage of the proposal is to determine the size of the economic ordering lot. Based on the calculation, it can be seen that the optimal size of raw materials that need to be ordered is 309 plates. With the ss in the proposed policy, the total inventory cost that needs to be incurred by the company is Rp.1,483,861,881 / year or 20% lower than the current condition. Abstrak. PT. Sinar Terang Logamjaya (PT. STALLION) secara hukum didirikan pada tanggal 28 September 1998, bergerak di bidang manufaktur komponen suku cadang sepeda motor. Dalam proses produksi produk Guide Komp Level K1AA, sering terjadi kekurangan jumlah produksi, dan masih ditemukannya cacat dalam proses produksi. Selain itu, perusahaan menghadapi tantangan terkait keterlambatan kedatangan bahan baku dan adanya bahan baku yang reject karena tidak sesuai dengan standar kualitas perusahaan. Hal ini dikarenakan perusahaan tidak memiliki Safety Stock (SS) yang dapat mengatasi gangguan produksi yang diakibatkan oleh permasalahan yang sedang dihadapi perusahaan. Usulan yang dilakukan pada penelitian ini adalah pengendalian persediaan dan SS untuk produk Guide Komp Level K1AA dengan menggunakan model Simple Probabilistic. Tahap usulan menghitung level of service (η) dan SS. Hasil perhitungan η diperoleh sebesar 98,46%. Maka untuk mempertahankan tingkat pelayanan berdasarkan hasil perhitungan tersebut, diperlukan jumlah SS sebanyak 12 plate. Tahap selanjutnya dari usulan tersebut adalah menentukan ukuran lot pemesanan ekonomis. Berdasarkan hasil perhitungan dapat diketahui bahwa ukuran optimal bahan baku yang perlu dipesan adalah sebanyak 309 plate. Dengan adanya SS pada kebijakan usulan, maka total biaya persediaan yang perlu dikeluarkan oleh perusahaan adalah sebesar Rp.1.483.861.881/tahun atau lebih rendah 20% dibandingkan dengan kondisi saat ini.
Perbaikan Pengendalian Persediaan Bahan Baku Kain Menggunakan Metode Q dan Metode P Rizal Saputra; Prasetyaningsih, Endang; Febri Suahati, Ajrina
Bandung Conference Series: Industrial Engineering Science Vol. 4 No. 2 (2024): Bandung Conference Series: Industrial Engineering Science
Publisher : UNISBA Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/bcsies.v4i2.15039

Abstract

Abstract. PT. Multi Garmenjaya is a garment company that produces various types of products, namely bags, accessories, shirts, t-shirts, jackets, formal pants, jeans, and cotton. The market response strategy implemented by PT. Multi Garmenjaya is Make To Stock (MTS) with uncertain product demand characteristics. The problems that occur in the company are the occurrence of excess or shortage of raw materials which causes higher inventory costs and production delays for several Jeans models. In line with the uncertain characteristics of the company's demand, the proposed inventory control is carried out using probabilistic inventory control methods, namely the Q method and the P method. The research stage begins with classifying raw materials using ABC analysis to identify raw materials that are controlled by referring to raw materials that are classified as category A. The calculation results show that there are 9 raw materials that are classified as category A with a cumulative percentage of fund absorption of 75.31%. The results of the analysis are then tested for normality and improvements are made to inventory control through the Q method and the P method. Based on calculations using both methods, the P method was selected as the selected probabilistic method in handling the phenomenon of excess or shortage of fabric raw materials by providing a total reduction in inventory costs of Rp. 28.554.312 of the total inventory cost at the current condition of Rp. 1.665.051.783, so that the minimum total inventory cost expectation is obtained, namely Rp. 1.636.497.471. Abstrak. PT. Multi Garmenjaya merupakan perusahaan garmen yang menghasilkan berbagai jenis produk yaitu tas, aksesoris, kemeja, T-Shirt, jaket, celana formal, celana jeans, dan cotton. Strategi respon pasar yang diterapkan PT. Multi Garmenjaya adalah Make To Stock (MTS) dengan karakteristik permintaan produk yang tidak pasti. Permasalahan terjadi pada perusahaan adalah terjadinya kondisi kelebihan atau kekurangan bahan baku kain yang menyebabkan perusahaan harus mengeluarkan biaya persediaan yang lebih tinggi. Selain itu perusahaan harus menunda produksi untuk beberapa model celana Jeans. Untuk mengatasi masalah ini, perusahaan perlu mengatur kembali pengadaan bahan baku. Selaras dengan karakteristik permintaan perusahaan yang tidak pasti, maka usulan pengendalian persediaan dilakukan menggunakan metode pengendalian persediaan probabilistik yaitu metode Q dan metode P. Tahapan penelitian diawali dengan klasifikasi bahan baku kain menggunakan analisis ABC untuk mengidentifikasi bahan baku kain yang dikendalikan dengan mengacu pada bahan baku yang tergolong kategori A. Berdasarkan hasil perhitungan, diketahui terdapat 9 bahan baku kain yang tergolong pada kategori A dengan persentase kumulatif penyerapan dana sebesar 75,31%. Hasil dari analisis tersebut selanjutnya dilakukan uji normalitas dan dilakukan perbaikan pengendalian persediaan melalui metode Q dan metode P. Berdasarkan perhitungan melalui kedua metode tersebut, metode P terpilih sebagai metode probabilistik terpilih dalam menangani fenomena kelebihan atau kekurangan bahan baku kain dengan memberikan pengurangan total biaya persediaan sebesar Rp. 28.554.312 dari total biaya persediaan pada kondisi saat ini yaitu sebesar Rp. 1.665.051.783, sehingga diperoleh ekspektasi total biaya persediaan minimum yaitu sebesar Rp. 1.636.497.471.
Penentuan Interval Waktu Perawatan Mesin Blowing dan Mesin Filling Menggunakan Teori Reliability dan Model Age Replacement (Studi Kasus pada PT. XYZ) : - Prasetyaningsih, Endang; Ruchiyat, Ilyas; Muhammad, Chaznin R.
Jurnal Sistem Teknik Industri Vol. 22 No. 2 (2020): JSTI Volume 22 Number 2 July 2020
Publisher : TALENTA Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jsti.v22i2.3762

Abstract

Engine performance will decrease when it is operated continuously so that maintenance is needed. Improper maintenance time intervals can reduce engine reliability and still causes machine damage suddenly. Therefore, maintenance time intervals must be determined precisely. This study aims to determine the engine maintenance time intervals using Reliability Theory and Age Replacement Model, then calculate the total maintenance cost. The result shows that the application of new maintenance time interval increases machine reliability.
Determination of Maintenance Intervals Using Multi-Criteria Approach to Increase Machine Availability at a Cement Company M. Taufik, Ilham; Prasetyaningsih, Endang; P. A. Hidayat, Nita
Jurnal Improsci Vol 1 No 2 (2023): Vol 1 No 2 October 2023
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v1i2.66

Abstract

A downtime will decrease machine availability that will affect reliability and maintainability. If interval time between two consecutive machine failures is approach to zero, it shows that the machine reliability is low, and so the availability. In the other hand, if interval time between is high, the machine availability and reliability are high. However, the procuring cost of the machine components is expensive. The problem is what is the maintenance interval time in order to optimize machine availability and reliability. In this study, the downtime is minimized by determining maintenance intervals using a multicriteria, i.e. reliability, availability, and maintainability (RAM). The model used in this research is the Age Replacement Model. A case study of a cement company is taken to show the determination of the maintenance interval. The observation shows that the Kiln Division has the longest total downtime of 1,846 hours/year although the Kiln Division has implemented overhaul during 15 days and maintenance one times. The total downtime of the Kiln Division was caused by failure to the Grate Cooler machine by 56.582%. A maintenance interval is proposed, and the result shows that the proposed maintenance intervals reduce total downtime by 86.6% and improve machine availability by 1,8%.
Model of Start-Up Business with Considering Household Spending using System Dynamics Approach Renosori, Puti; Prasetyaningsih, Endang; Satori, Mohamad
Jurnal Improsci Vol 2 No 3 (2024): Vol 2 No 3 December 2024
Publisher : Ann Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62885/improsci.v2i3.537

Abstract

This study investigates a family-run start-up business in which the company's finances are not separate from the family’s finances. The start-up business owner relies on the company's finances to cover the household spending from the beginning because the owner is not paid by the company. As a result, the company fails to grow and is on the verge of bankruptcy. This study focuses on developing a start-up business model that considers household spending as a decision variable allowing it to grow and develop. The System Dynamics approach was chosen due to the complexity of the trade-offs between variables in a start-up business model. The Cassava meatball start-up business run by Madrasah is used as an example. The developed model simulates a variety of treatments, including giving debt to develop start-up businesses. However, this debt can be burdensome because the company must pay it. The findings indicate that the use of income to cover household spending at the beginning is inappropriate while providing debt to revive the startup must be sufficient and timely. The developed model is expected to assist start-up business owners in selecting a variety of alternative policies that will allow the business to grow, develop, and be sustainable.
Penerapan Preventive Maintenance untuk Mereduksi Downtime Pada Mesin Punching Ziarini Febriani; Endang Prasetyaningsih; Chaznin R. Muhammad
Jurnal Riset Teknik Industri Volume 5, No. 1, Juli 2025, Jurnal Riset Teknik Industri (JRTI)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrti.v5i1.6421

Abstract

Abstrak. PT. XYZ adalah perusahaan yang memproduksi berbagai jenis alas kaki dengan merek dagang Tomkins. Kendala yang sering dialami yaitu kerusakan mesin yang menyebabkan downtime. Oleh karena itu, perlu dilakukan langkah pencegahan dengan menerapkan preventive maintenance. Pada saat ini, perusahaan menerapkan corrective maintenance pada komponen di mesin Punching dengan keandalan komponen coil sebesar 45,446%, komponen spring sebesar 43,065%, dan komponen bearing sebesar 47,513%, sehingga diperoleh biaya pemeliharaan sebesar Rp1.851.809.814 per 3 tahun. Kemudian untuk mencapai tingkat keandalan 85% dilakukan interval pemeliharaan untuk komponen coil setiap 261 jam dengan keandalan menjadi 85,055%, komponen spring setiap 255 jam dengan keandalan menjadi 85,061% dan komponen bearing setiap 346 jam dengan keandalan menjadi 85,036%. Setelah itu dilakukan pembuatan jadwal pemeliharaan usulan dengan biaya pemeliharaan yang dipilih adalah yang paling rendah berdasarkan interval pemeliharaan komponen spring. Dengan demikian, total biaya pemeliharaan yang harus dikeluarkan mencapai Rp436.608.337 dalam periode 3 tahun dengan penurunan persentase biaya pemeliharaan sebesar 76,423%. Abstract. PT. XYZ is a company that manufactures various types of footwear under the Tomkins brand. A common challenge faced by the company is machine breakdowns that lead to downtime. Therefore, preventive measures need to be taken by implementing preventive maintenance. Currently, the company applies corrective maintenance to components in the Punching machine, with component reliability levels as follows: coil at 45.446%, spring at 43.065%, and bearing at 47.513%. This results in maintenance costs of IDR 1,851,809,814 over a three-year period. To achieve a reliability level of 85%, maintenance intervals are determined as follows: the coil component every 261 hours, achieving 85.055% reliability; the spring component every 255 hours, achieving 85.061% reliability; and the bearing component every 346 hours, achieving 85.036% reliability. Subsequently, a proposed maintenance schedule is developed, selecting the lowest maintenance cost based on the spring component's maintenance interval. As a result, the total maintenance cost amounts to IDR 436,608,337 over three years, representing a 76.423% reduction in maintenance costs.
Reduksi Downtime Menggunakan Preventive Maintenance Di PT XYZ Erlangga Diwansyah Rachmawan; Endang Prasetyaningsih; Reni Amaranti
Jurnal Riset Teknik Industri Volume 5, No. 1, Juli 2025, Jurnal Riset Teknik Industri (JRTI)
Publisher : UPT Publikasi Ilmiah Unisba

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29313/jrti.v5i1.6447

Abstract

Abstrak. PT XYZ merupakan perusahaan manufaktur yang memproduksi pesawat terbang. Pemilihan mesin dan komponen kritis berdasarkan downtime dan frekuensi kerusakan, diperoleh mesin dan komponen yaitu CNC Deckel Maho (profibus module) dan Cyrilbath (oil seal jaw). Saat ini, total biaya pemeliharaan mencapai Rp 2.611.708.603 dengan keandalan masing-masing komponen sebesar 42%. Interval pemeliharaan yang diterapkan adalah 226,972 jam (oil seal jaw) dan 241,265 jam (profibus module), menghasilkan downtime masing-masing 113,75 jam dan 35,18 jam. Agar mereduksi downtime, 3 skenario pemeliharaan diusulkan, yaitu pemeliharaan masing-masing dan gabungan. Kemudian, ditentukan interval pemeliharaan 36 jam (oil seal jaw) dan 42 jam (profibus module). Skenario ketiga (pemeliharaan bersama setiap 42 jam) menghasilkan biaya terendah, yaitu Rp 972.003.667. Melalui skenario ini, keandalan mesin CNC Deckel Maho meningkat menjadi 95% dan Mesin Cyrilbath menjadi 94%. Downtime juga diprediksi turun signifikan, dari 113,75 jam menjadi 9,971 jam (CNC Deckel Maho) dan dari 35,18 jam menjadi 3,078 jam (Cyrilbath). Abstract. PT XYZ is a manufacturing company that produces aircraft. Critical machines and components were selected based on downtime and failure frequency, identifying the CNC Deckel Maho (Profibus module) and Cyrilbath (oil seal jaw) machines. Currently, total maintenance costs amount to IDR 2,611,708,603, with a reliability of 42% for each component. The current maintenance intervals are 226.972 hours for the oil seal jaw and 241.265 hours for the Profibus module, resulting in downtimes of 113.75 hours and 35.18 hours, respectively. To reduce downtime, three maintenance scenarios were proposed: individual maintenance and combined maintenance. Maintenance intervals were then set at 36 hours for the oil seal jaw and 42 hours for the Profibus module. The third scenario (combined maintenance every 42 hours) produced the lowest cost, at IDR 972,003,667. Through this scenario, the reliability of the CNC Deckel Maho machine increased to 95%, and the Cyrilbath machine to 94%. Downtime is also predicted to decrease significantly, from 113.75 hours to 9.971 hours (CNC Deckel Maho) and from 35.18 hours to 3.078 hours (Cyrilbath).
Implementation of Shokyakuro-FTU Incinerator to process residual waste towards Unisba's zero-waste campus Prasetyaningsih, Endang; Najamudin, Yan Orgianus; Satori, Mohamad; Oemar, Hirawati; Susilo, Putri Aulia
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 8 No. 4 (2024): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v8i4.21902

Abstract

Unisba's waste problem was solved by establishing a compost hut to sort organic, recyclable, and residual waste, which the Clean and Green Team managed. Organic waste is composted; recyclable waste is separated, cleaned, and sold to Bandung City's main waste bank; and residual waste is transported by the Cleaning Technical Unit (UPTD) Bandung City. Unisba has launched a long-term initiative to become a zero-waste campus by managing waste independently. As part of this program, the Shokyakuro -FTU Incinerator machine will process residual waste on Campus 2 Unisba Ciburial and replace the processing of residual waste by UPTD. This service activity aims to use the Shokyakuro -FTU Incinerator machine to process residual waste at Campus 2 Unisba in Ciburial District, Bandung Regency. All cleaning staff practice in Campus 2 Unisba Ciburial operating the Shokyakuro -FTU Incinerator machine as part of the implementation process. Following training, machine operating procedures are developed to make it easier for cleaning staff to use the machine in the future.
Co-Authors 10070216022, Fani Firmansyah 10070216122, Afina Muthi Fatharani 10070218059, Mufida Ashari Mutmainah 10070218125, Muhammad Fikri Abdul Hakim Halim Agus Nana S. Agus Nana S., Agus Ahmad Arif Nurrahman Anggraeni, Silviana Diah Mulya Chaznin R Muhammad Chaznin R. Muhammad Dadan Wahyudi Dzaldhi Yudistira Nirbaya Erlangga Diwansyah Rachmawan Fathiya Izzatunnisaa Febri Suahati, Ajrina Fikri Ramadhan Ghina Syarifah Halim, Abdul Hakim Hirawati Oemar Iyan Bachtiar Luthfi Nurwandi M. Taufik, Ilham Mangunah Istikomah Mochammad Rizki Ramdani Mohamad Satori Muhammad, Chaznin R. Najamudin, Yan Orgianus P. A. Hidayat, Nita Purwoko, Agus Puti Renosori R. Ceha R. Ceha, R. Reni Amaranti Rifky Pajar Kemaluddin Rizal Saputra Ruchiyat, Ilyas Samadhi, T.M.A. Ari Selamat Selamat Selamat Sugeng Tabah Raharjo Suprayogi Suprayogi Suprayogi, Suprayogi Susilo, Putri Aulia T.M.A. Ari Samadhi Thalita Rafa Al-zasyira. SAS Thalitha, Inas Ayu Zhafira Tiara Anjali Ziarini Febriani