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All Journal J@TI (TEKNIK INDUSTRI) Infotekmesin Jurnal Riset Teknologi Industri REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Teknika Sains : Jurnal Ilmu Teknik Jurnal Rekayasa, Teknologi, dan Sains Jurnal Abdi Masyarakat Saburai (JAMS) Jurnal Inovasi Pengabdian dan Pemberdayaan Masyarakat Proceeding Mercu Buana Conference on Industrial Engineering AMMA : Jurnal Pengabdian Masyarakat Prosiding Seminar Hasil Penelitian dan Pengabdian Kepada Masyarakat JUSTIMES (Jurnal Rekayasa Teknik Mesin Saburai)
Kemas Muhammat Abdul Fatah
Universitas Sang Bumi Ruwa Jurai
Agriculture, Biological Sciences & Forestry Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences Transportation

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Uji Eksperimental Efisiensi Panas Alat Pengering Surya Langsung Pasif Berbiaya Murah dengan Variasi Material Penutup Transparan Kemas Muhammat Abdul Fatah; Indriyani; Ari Beni Santoso
Infotekmesin Vol 13 No 2 (2022): Infotekmesin: Juli, 2022
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v13i2.1535

Abstract

Indonesia should be able to provide inexpensive solar dryers due to the availability of sunlight all year round throughout the country. This study proposes a passive direct solar dryer as it is the simplest one to construct, with aluminum mesh sheets as a heat-absorbing material, and glass fiber as an insulating material. For the cost-effective transparent cover, this study proposes 0.8 mm clear polycarbonate (PC), 2 mm clear glass, and 2 mm clear acrylic. The experimental test results of the solar dryer model showed that the highest heat efficiency value for polycarbonate (PC) is 16%, whereas the heat efficiency value for glass and acrylic is 10% and 8%, respectively. Through these findings, the construction of solar dryers is simple and low cost by using glass fiber as insulation, aluminum mesh sheets as heat absorbers, and PC instead of thin glass as transparent covers.
Analisis Konsumsi BBM dengan Variasi Lingkungan Operasi Kendaraan Bermotor Menuju Perilaku Eco-Drive Syarifudin, Mohammad; Muhammat Abdul Fatah, Kemas; Dalimunthe, Ruslan; Mohammad Syarifudin; Fatah, Kemas Muhammat Abdul; Ruslan Dalimunthe
Infotekmesin Vol 14 No 1 (2023): Infotekmesin: Januari, 2023
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v14i1.1611

Abstract

The increase in greenhouse gases in the form of CO2 gas as vehicle exhaust emissions contributes to climate change. Technological approaches and alternative fuels continue to reduce fuel consumption, but this is not enough. Another method is to use eco-drive behavior, one of which is related to replacing the air filter. This study is purposed to provide guidelines for motorized vehicles operating in selected areas in Lampung Province in the behavior of eco-driving. The results of the fuel consumption test using the full-to-full method found that at each filter distance (8,000 km, 12000, and 16,000 km), vehicles operating in Mesuji with the highest deficiency, followed by Tanjung Bintang and Krui areas. In line with eco-drive behavior, for vehicles operating in Mesuji, the air filter replacement period must be faster than the other two areas, followed by Tanjung Bintang and Krui.
Uji Eksperimental Efisiensi Panas Alat Pengering Surya dengan Menambahkan Batu Koral Sebagai Material Sensible Heat Storage Fatah, Kemas Muhammat Abdul; Azis, Ibnu
Infotekmesin Vol 15 No 1 (2024): Infotekmesin: Januari, 2024
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v15i1.2147

Abstract

Renewable energy sources originating from solar are the most environmentally friendly energy because they do not cause any pollution. The utilization of solar energy can be in the form of a direct passive solar dryer for preserving agricultural and fishery products. Solar energy has limitations related to intermittent solar irradiation, so it is necessary to add Sensible Heat Storage (SHS) material to increase thermal efficiency. Pebble stones are an SHS material that is abundantly available in a variety of colors, and suitable for solar dryers with low-temperature requirements. The study aimed to find temperature conditions and thermal efficiency through experimental tests three times, twice with SHS material, respectively white and black pebble stones, and once without SHS material. The experimental test results found that the temperature of the drying chamber was more stable with the addition of SHS material, and the highest thermal efficiency was obtained from black pebble stones, namely 49%, and white pebble stones, 40%.
Memperbaiki Kinerja Mutu dengan Menggunakan Metode FMEA pada Industri Karung Tenun Polypropylene Fatah, Kemas Muhammat Abdul; Wisnaningsih, Wisnaningsih
Proceeding Mercu Buana Conference on Industrial Engineering Vol 5 (2023): LEAN AND GREEN FOR SUSTAINABILITY DEVELOPMENT GOALS IN THE I4.0 ERA
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/MBCIE.2023.028

Abstract

The quality failure rate in the production process in the form of defective products, scrap products, rework, rejection, and waste is an indicator of a company's quality performance, especially with regard to cost quality.  Failure in the production process will increase the rate of defects, scrap, rework, rejection, and waste, which in turn will increase the cost of quality. This study uses the FMEA method to fight identified failures from gemba walk activities. Improvements made using the FMEA method with several recommendations for improvement solutions can reduce failures, this can be seen by comparing the RPN values. The RPN failure value in the extrusion process which affected the hollow or loose PP woven sacks decreased to 98 from 490, and which resulted in lighter sack weight decreased to 98 from 490. The decrease occurred due to the achievement of the process capability value (Cpk) which was as expected ie 1.36 for denier specifications and 1.33 for yarn bandwidth specifications. This Cpk achievement has an impact on a decrease of the occurrence (o) level. Meanwhile, the failure of the RPN value in the weaving process which had an impact on products returned by customers, decreased to 98 from 490. The decrease occurred because the weaving process operator was given the responsibility to carry out maintenance and cleanliness of the machine which resulted in a decrease of the occurrence (o) level.
Implementation of Hygienic Solar Drying Technology to Increase Sales Turnover of Melinjo Chips MSMEs Fatah, Kemas Muhammat Abdul; Wibowo, Heri; Luthfi, Muhammad; Dimyati, Arzaq Guruh
REKA ELKOMIKA: Jurnal Pengabdian kepada Masyarakat Vol 7, No 1 (2026): Reka Elkomika
Publisher : Institut Teknologi Nasional, Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26760/rekaelkomika.v7i1.70-79

Abstract

The constraints of MSMEs emping melinjo are on the supply side, where the increase in demand for melinjo chips cannot be matched by production capacity. Production capacity is highly dependent on the drying process. The drying process of emping melinjo is highly dependent on the season. In addition to requiring a relatively long time, emping melinjo is easily contaminated by microbes, making it unhygienic. Related to the constraints faced by MSMEs, the drying process must be improved so that the drying process is fast and hygienic by implementing a hygienic dryer. This PKM activity is divided into several stages, starting with the survey and literature study stage, ending with the evaluation stage. This dryer is constructed knockdown with 5 mm transparent clear glass material, the door is made of a vertical lift door, the walls of the dryer are insulated with glass wool and equipped with a turbine ventilator for better air circulation. Based on the evaluation results, this technology is able to speed up the drying process so that MSME turnover increases by up to 79% and workers' wages increase by 66.7%, resulting in better product quality and of course hygienic.
Analisis Persediaan Bahan Baku Utama Produksi Roti Dengan Menggunakan Metode Economic Order Quantity (Studi Kasus: Pabrik Roti X) Al Afif, Risky; Fatah, Kemas Muhammat Abdul; Wardana, Marcelly Widya; Wibowo, Heri
Jurnal Rekayasa Teknologi dan sains Vol 10, No 1 (2026): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v10i1.24306

Abstract

ABSTRAK Pabrik roti X menghadapi permasalahan dalam pengelolaan persediaan tepung terigu sebagai bahan baku utama akibat sistem pemesanan yang masih dilakukan secara manual dan berdasarkan perkiraan. Hal ini menyebabkan ketidakefisienan dan pemborosan biaya persediaan. Penelitian ini bertujuan untuk menganalisis dan mengoptimalkan pengendalian persediaan tepung terigu dengan menerapkan metode Economic Order Quantity (EOQ), serta membandingkannya dengan metode konvensional yang telah digunakan. Penelitian ini menggunakan pendekatan kuantitatif deskriptif dengan teknik pengumpulan data melalui observasi, wawancara, dan dokumentasi. Data dianalisis menggunakan rumus EOQ, Safety Stock, dan Reorder Point. Hasil penelitian menunjukkan bahwa metode konvensional perusahaan melakukan pemesanan sebanyak 24 kali dalam setahun, dengan rata-rata pemesanan sebesar 2.960 kg tepung terigu. Sementara penerapan metode EOQ menghasilkan jumlah pemesanan optimal sebesar 10.739 kg dengan frekuensi 7 kali per tahun, menurunkan total biaya persediaan sebesar 49% dari Rp 6.456.684 menjadi Rp. 3.307.824, dengan Safety Stock sebesar 317 kg dan ROP sebesar 773 kg. Dengan terjadinya penurunan total biaya inventory (TIC) menunjukkan bahwa penggunaan metode EOQ mampu meningkatkan kinerja keuangan perusahaan. Selain itu, dengan adanya penetapan jumlah safety stock (SS) mampu menjamin ketersedian bahan baku tepung terigu, mengeliminir terjadinya stockouts. Kata Kunci: economic order quantity, reorder point, safety stock, total inventory cost ABSTRACT Analysis of Primary Raw Material Inventory in Bread Production Using the Economic Order Quantity (EOQ) Method (Case Study: Bakery Factory X). Bakery Factory X experiences inefficiencies in managing wheat flour inventory as its primary raw material due to a manual and estimation-based ordering system, resulting in excess or insufficient and increased inventory costs. This study aims to analyze and optimize wheat flour inventory control by implementing the Economic Order Quantity (EOQ) method and comparing it with the conventional method used by the company. A descriptive quantitative approach was employed, with data collected through observation, interviews, and documentation. The analysis utilized EOQ, Safety Stock, and Reorder Point calculations. The results show that the conventional method involves 24 orders per year with an average order quantity of 2,960 kg, whereas the EOQ method yields an optimal order quantity of 10,739 kg with an ordering frequency of 7 times per year. The implementation of EOQ reduces total inventory costs by 49%, from IDR 6,456,684 to IDR 3,307,824, with a safety stock of 317 kg and a reorder point of 773 kg. These findings indicate that the EOQ method significantly improves inventory efficiency and enhances the company’s financial performance by ensuring raw material availability and minimizing the risk of stockouts. Keywords: economic order quantity, reorder point, safety stock, total inventory cost
ANALISIS PENGENDALIAN PERSEDIAAN BAHAN BAKU DENGAN PERAMALAN DAN PERBANDINGAN METODE ECONOMIC ORDER QUANTITY (EOQ) DAN PERIOD ORDER QUANTITY (POQ) PADA UMKM PRODUK TAHU PAK SUNARYA Setiawan, Sukron Alif; Fatah, Kemas Muhammat Abdul; Hadi, R. Agung Efriyo
Jurnal Rekayasa Teknologi dan sains Vol 10, No 1 (2026): Jurnal Rekayasa, Teknologi, dan Sains
Publisher : Fakultas Teknik Universitas Malahayati

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33024/jrets.v10i1.24348

Abstract

Persediaan bahan baku memainkan peran penting dalam menjaga kelancaran proses produksi, terutama untuk Usaha Mikro, Kecil, dan Menengah (UMKM). UMKM Produk Tahu Pak Sunarya menghadapi tantangan dalam pengelolaan persediaan kedelai karena bahaya permintaan bulanan, yang menyebabkan inefisiensi dalam pengadaan bahan baku dan biaya penyimpanan yang tinggi. Ketidakakuratan dalam menentukan kuantitas dan waktu pemesanan dapat berdampak langsung pada gangguan produksi dan meningkatkan biaya operasional. Studi ini bertujuan untuk menganalisis sistem pengendalian persediaan bahan baku menggunakan metode penyediaan kedelai dan membandingkan dua pendekatan manajemen persediaan: Economic Order Quantity (EOQ) dan Period Order Quantity (POQ). Studi ini menggunakan pendekatan deskriptif kuantitatif, dengan pengumpulan data melalui wawancara, observasi langsung, dan dokumentasi dari September 2023 hingga Agustus 2024. Peramalan permintaan produk dilakukan menggunakan metode Single Exponential Smoothing (SES) untuk mendapatkan prediksi permintaan yang lebih akurat sebagai dasar perhitungan kebutuhan persediaan. Hasil penelitian menunjukkan bahwa metode EOQ memberikan hasil paling optimal dengan banyaknya pesanan 6.517 kg per pesanan, frekuensi pesanan 7 kali per tahun, dan total biaya persediaan (TIC) sebesar Rp11.778.956 dibandingkan dengan metode POQ yang memiliki TIC sebesar Rp59.643.675 dan metode aktual perusahaan sebesar Rp21.442.266, EOQ lebih unggul dalam efisiensi biaya dan pengadaan. EOQ juga menghasilkan perhitungan Safety Stock sebesar 939 kg dan Reorder Point sebesar 1.427 kg untuk mencegah kekurangan bahan baku. Kesimpulannya, metode EOQ lebih efektif dan efisien untuk diterapkan pada UMKM Produk Tahu Pak Sunarya karena mampu mengurangi biaya persediaan dan menjaga ketersediaan bahan baku. Penelitian ini diharapkan dapat menjadi referensi bagi UMKM dalam menentukan strategi pengendalian persediaan yang lebih tepat, sistematis, dan berbasis data . 
Co-Authors AB, Nurul Ibad Aditya Kurniawan Saputra Ahmad Sidiq Al Afif, Risky Anwar Anwar Ari Beni Santoso Azis, Ibnu Dimyati, Arzaq Guruh Dwi Kuncoro Fery Hendi Jaya Hadi, R. Agung Efriyo Heri Wibowo Ibnu Azis Iing Lukman Indriyani Indriyani Indriyani Indriyani Indriyani Ivan Prasetya Juansyah, Yan M Yunus M. Yunus Marcelly Widya Wardana Mohammad Syarifudin Mohammad Syarifudin Muhammad Luthfi Muhammad Yunus Muhammat Abdul Fatah, Kemas Rifqiani, Putri Salsabilla Ruslan Dalimunthe Saputra, Anam Setiawan, Sukron Alif Supriyanto Supriyanto Syarifudin, Mohammad Thohirin, Muh Tobby Jaladara Wisnaningsih, Wisnaningsih