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All Journal Jurnal Inovator Jurnal Abdi Insani Journal Of Industrial Engineering & Technology Innovation Teknik: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer
Sigit Arrohman
Universitas Jenderal Soedirman
Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering

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ANALISIS DAMPAK LISTRIK STATIS TERHADAP KERUGIAN PRODUKSI DAN BIAYA OPERASIONAL DI INDUSTRI Ratri Rahmawati; Heni Risnawati; Tuti Nadhifah; Sigit Arrohman; Helmi Nur Fajri
Journal of Industrial Engineering & Technology Innovation Vol. 4 No. 1 (2026): Journal of Industrial Engineering & Technology Innovation (JIETI)
Publisher : LENVARI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61105/jieti.v4i1.439

Abstract

One of the main issues with high-speed plastic cutting machines is the generation of static electricity due to friction between the plastic film and machine components during the production process. This study aims to analyze the impact of static electricity on production losses and operational costs in Cut-to-Length Rotary plastic cutting machines at PT Elsida Karya. The study focuses on the influence of static electricity on machine performance, production stability, and industrial operational efficiency. Previous studies have generally addressed product quality and machine maintenance, while research examining the relationship between static electricity and production losses and operational costs remains limited. The study employs a quantitative descriptive approach with a case study design. Data was collected through direct observation, interviews, production documentation, and analysis of operational data. The results indicate that static electricity causes plastic to adhere to the cutting blades, resulting in machine downtime of 15–40 minutes per shift and reducing production output from 3,000 pieces/hour to approximately 2,600–2,700 pieces/hour. Productivity decreased by approximately 10–13%, with estimated production losses reaching Rp9,000,000–Rp12,000,000 per month. The implementation of an anti-static system—including ionizers, optimized grounding, and anti-static brushes—is expected to improve production efficiency by 8–12%. Thus, a static electricity mitigation system is a critical solution for enhancing production stability and reducing operational losses in the plastics industry.
OPTIMALISASI PROSES PENGERINGAN TEMBAKAU MENGGUNAKAN MESIN PENGERING BERBASIS HEAT EXCHANGER DAN SISTEM TRAY DRYING UNTUK EFISIENSI ENERGI DAN PENINGKATAN KUALITAS PRODUK DI DESA GULANG, KUDUS Dina Tauhida; Ratri Rahmawati; Slamet Khoeron; Taufiq Hidayat; Akhmad Zidni Hudaya; Sugeng Slamet; Muhammad Luqman Saiful Fikri; Sigit Arrohman; Rangga Primadasa
Jurnal Abdi Insani Vol 13 No 6 (2026): Jurnal Abdi Insani
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/abdiinsani.v13i6.4036

Abstract

Tobacco farmers in Gulang Village, Kudus Regency, face post-harvest challenges, particularly in the drying process, which is still conducted conventionally, resulting in prolonged drying time, high energy consumption, and inconsistent product quality. This community service program aimed to improve drying efficiency and tobacco quality through the implementation of a heat exchanger-based tobacco drying machine. The dryer was designed with dimensions of 1.2 m × 2.4 m × 1.2 m and equipped with 16 trays, utilizing an indirect heating system to ensure stable temperature control and prevent smoke contamination. The implementation stages included needs assessment, machine design and manufacturing, program socialization, operational and maintenance training, field implementation, and before–after performance evaluation. The results showed a reduction in drying time from 72.0 hours to 52.2 hours (27.5% efficiency improvement), energy savings from 100.0 to 75.6 kWh equivalent (24.4% reduction), and an increase in dried tobacco output from 84.6 kg to 93.6 kg per cycle (10.6% improvement). The final moisture content was more uniform at 13–14%. Statistical analysis indicated significant differences between conventional and machine-based drying methods (p < 0.05). The implementation of this appropriate technology effectively enhanced post-harvest efficiency, improved product quality, and supported the sustainability of smallholder tobacco farming in Gulang Village.
Analisis Efektivitas Penerapan Maintenance pada Mesin Produksi Furniture (Rustic) Studi Kasus di PT. Rajawali Perkasa Furniture Ratri Rahmawati; Sigit Arrohman; Rianto Wibowo; Bella Chintya Reira Christata; Heni Risnawati; Tuti Nadhifah
Jurnal INOVATOR Vol. 9 No. 1 (2026): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/0jtxqx05

Abstract

Rustic wood refers to a type of wood that has a rough, natural appearance, and often retains the original characteristics of the wood. The term "rustic" describes a style or appearance that is simple, old-fashioned, and rustic in nature. Rustic wood is often used in interior and exterior design to create a warm, natural atmosphere. The research methodology was carried out by searching for literature studies collected from journals, papers and the internet. Conduct interviews with supervisors and PT employees. Rajawali Perkasa Furniture in the field. As well as direct observations in the field to find solutions related to problems that occur to take corrective solutions in accordance with company procedures. The maintenance carried out to repair Rustic machines is Preventive Maintenance. A maintenance system that is carried out regularly to ensure the condition of the machine and extend the life of the machine. Preventive maintenance is carried out regularly to prevent damage to the equipment so that if minor damage is found it can be repaired immediately. With planned maintenance, PT Rajawali Perkasa Furniture aims to find symptoms of damage to equipment before it experiences fatal damage, keep its production equipment machines in optimal condition, reduce the risk of damage, and increase overall productivity.
Pengaruh Fraksi Volume Pada Uji Mekanis Komposit Hybrid Dari Serat Sabut Kelapa Dan Serat Batang Pisang Bermatrix Epoxy Frizky Putra Inzaghi; Ratri Rahmawati; Rianto Wibowo; Sigit Arrohman
Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 5 No. 2 (2025): Juli : Jurnal Teknik Mesin, Elektro dan Ilmu Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/teknik.v5i2.7587

Abstract

Abstract. The increasing demand for eco-friendly and recyclable materials has driven the development of natural fiber-based composite materials. This study aims to analyze the effect of volume fraction variation on the mechanical properties of hybrid composites made from coconut coir fiber and banana stem fiber with an epoxy matrix. The research employed an experimental method with variations of fiber volume fractions at 40%, 30%, and 20%, and mechanical testing including tensile, bending, and impact tests based on ASTM standards. The results showed that the highest tensile strength was achieved by the composite with a 60% matrix and 40% fiber volume fraction, reaching 21.16 MPa. Meanwhile, the highest bending strength and impact resistance were obtained by the composite with an 80% matrix and 20% fiber volume fraction, at 49.46 MPa and 0.00837 Joule/mm², respectively. Increasing the fiber content tends to enhance tensile strength but reduces bending strength and impact resistance due to uneven resin distribution and the formation of voids. This hybrid composite has potential as an environmentally friendly material alternative with competitive mechanical properties.
Karakterisasi Fisik dan Mekanis Komposit Hybird dari Serat Pelepah Pisang, Fiberglass, dan Epoxy Muchammad Aryadi Anwar; Ratri Rahmawati; Rianto Wibowo; Sigit Arrohman
Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 5 No. 2 (2025): Juli : Jurnal Teknik Mesin, Elektro dan Ilmu Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/teknik.v5i2.7588

Abstract

Abstract. The increasing need for environmentally friendly materials encourages research on natural fiber-based composites. This study aims to characterize the physical and mechanical properties of hybrid composites of banana leaf fibers, fiberglass, and epoxy, as an alternative automotive material. The manufacturing process used the hand lay-up method with variations in the volume fraction of banana frond fiber, fiberglass and epoxy (10%; 20%; 70%), (15%; 15%; 70%), (20%; 10%; 70%).And used Experimental Research for Experiment Method. Tests include tensile (ASTM D-3039), impact (ASTM D-5924), and bending (ASTM D-790) tests. Results showed the highest tensile strength at 20% banana leaf fraction reached 38.78 MPa, exceeding the SAE J 1717 standard for car bumper applications. However, increasing the banana leaf fiber decreased the impact strength due to uneven fiber distribution. The highest bending strength was recorded at 69.648 MPa at a balanced fraction of 15% banana fronds and fiberglass. This study indicates the potential of banana leaf fiber hybrid composites as an environmentally friendly alternative material in the automotive industry.
Analisis Variasi Serat Terhadap Sifat Fisik dan Mekanik Komposit Hybird dari Serat Sabut Kelapa, Fiberglass, dan Epoxy Mochammad Rifki Ramadhani; Ratri Rahmawati; Rianto Wibowo; Sigit Arrohman
Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol. 5 No. 2 (2025): Juli : Jurnal Teknik Mesin, Elektro dan Ilmu Komputer
Publisher : Lembaga Pengembangan Kinerja Dosen

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/teknik.v5i2.7598

Abstract

The growing demand for lightweight, strong, and eco-friendly materials has encouraged the development of natural fiber-reinforced composites. This study investigates the mechanical properties of hybrid composites made from coconut coir fiber, fiberglass, and epoxy resin. The aim is to evaluate the effect of different fiber volume fractions on the tensile, impact, and flexural strength of the material. Specimens were fabricated using the hand lay-up method with three fiber volume variations: A (10% coir, 20% fiberglass), B (15%:15%), and C (20%:10%), with epoxy matrix fixed at 70%. Mechanical tests followed ASTM D-3039, D-5924, and D-790 standards. The results revealed that Fraction C exhibited the best performance with tensile strength of 25.52 MPa, impact energy of 11.18 J/m², and flexural strength of 71.86 MPa. These values are comparable to or exceed the minimum requirements for helmet shell materials as specified by SNI 1811-2007. Therefore, this hybrid composite shows great potential as an alternative protective material for motorcycle helmets while adding value to local biomass waste.
Co-Authors Akhmad Zidni Hudaya Bella Chintya Reira Christata Dina Tauhida Fikri, Muhammad Luqman Saiful Frizky Putra Inzaghi Helmi Nur Fajri Mochammad Rifki Ramadhani Muchammad Aryadi Anwar Nadhifah, Tuti Rangga Primadasa Ratri Rahmawati Rianto Wibowo. Risnawati, Heni Slamet Khoeron Sugeng Slamet Taufiq Hidayat