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All Journal Rotasi Jurnal Simetris Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik WARTA Media Mesin: Majalah Teknik Mesin Proceeding SENDI_U Jurnal Teknik Mesin Prosiding SENTIKUIN (Seminar Nasional Teknologi Industri, Lingkungan dan Infrastruktur) JPPM (Jurnal Pengabdian dan Pemberdayaan Masyarakat) Jurnal Teknik Mesin Indonesia Scientific Journal of Mechanical Engineering Kinematika Prosiding SNAST Journal of Mechanical Engineering Eksergi: Jurnal Teknik Energi Jurnal Teknik Terapan (J-TETA) Warta LPM Journal of Mechanical Engineering and Applied Technology
Rany Puspita Dewi
Jurusan Teknik Mesin, Fakultas Teknik, Universitas Tidar
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences

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Mesin Chopper untuk Meningkatkan Kualitas dan Kuantitas Pakan Usaha Ternak Kambing “Arrahman” Rany Puspita Dewi; Trisma Jaya Saputra; Tri Puji Rahayu
Warta LPM WARTA LPM, Vol. 27, No. 3, November 2024
Publisher : Universitas Muhammadiyah Surakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23917/warta.v27i3.6481

Abstract

The "Arrahman" partner is located in Kerten, Krincing Village, Secang District, Magelang manages around 200 to 300 goats. The process of preparing cattle fodder such as elephant grass and corn stalks is done manually using a knife. It causes the feed preparation process take longer considering the large number of goats being managed. The aim of this activity is to contrive and manufacture a chopper to help the process of cutting grass feed more effectively and efficiently. Because it is able to produce more feed capacity in a shorter time with a finer size. Activities are carried out in several stages. The first step is data accumulation and coordination together with partner. Continuing to the next step, the development of solving partner problems through chopper design. The method for measuring the efficiency and effectiveness of cutting cattle fodder is done by quantifying the capacity and quality of cattle fodder produced and quantifying the amount of rising in insight and knowledge of residents which is carried out by looking at before and after the application of the chopper. The primary result is a chopper with a capacity of 100 kg/hour with a 5.5 hp gasoline engine. Chopper parts can be disassembled and assembled, making it easier for partners to maintain and repair. The chopper increases the capacity of cutting animal feed to 100 kg/hour. The activity is able to increase residents' understanding and insight by up to 90%. It is because through design and construction activities, residents are able to understand and gain new insight into the process of making chopper machines.
Analisis Kinerja Mesin Pencuci Ubi Jalar dengan Metode Rotary Berkapasitas 25 Kg pada UMKM Grubi Manis Cahyo Cahyo sejati; Sigit Iswahyudi; Rany Puspita Dewi
Jurnal Teknik Terapan Vol. 5 No. 1 (2026): April
Publisher : P3M Politeknik Negeri Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25047/jteta.v5i1.106

Abstract

Sweet potato (Ipomoea Batatas) is an agricultural commodity with high economic value that is widely used as a raw material for processed products by Micro, Small, and Medium Enterprises (MSMEs), including the sweet potato industry. In the processing process, the washing stage plays an important role in determining the level of cleanliness of the raw materials and product quality. However, at the MSME scale, sweet potato washing is generally still done manually using human power through the gejruk method, which is soaking the sweet potatoes in water accompanied by repeated mechanical force using foot treads. This method has limitations such as relatively long processing time, dependence on the operator, non-uniform levels of cleanliness, and the potential for low hygiene of the washing results. This study aims to design, build, and test the performance of a rotary-based sweet potato washing machine as an alternative to manual washing. The research methods include mechanical design, component manufacturing, and machine performance testing. The sweet potato washing machine is designed to work horizontally using a rotating tube system equipped with an internal screw, driven by a 5.5 hp gasoline motor, with a washing capacity of 25 kg in one wash, and a processing time of 7 minutes, which obtained excellent cleanliness results. The test results show that the rotary method machine is able to increase the efficiency of washing time and produce sweet potatoes that are cleaner and more hygienic than the manual method.
Desain Rekayasa Mesin Pemisah Kulit Ari Kedelai Menggunakan Silinder Pengupas Dan Tenaga Blower Kapasitas 15 Kg/jam Eva Shandy Ratu Aliyyu; Rany Puspita Dewi
Journal of Mechanical Engineering and Applied Technology Vol. 4 No. 2 (2026): VOLUME 4 ISSUE 2 YEAR 2026 (JULY 2026)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v4i2.7606

Abstract

Soybean (Glycine max) is an important food commodity widely used as raw material for tempeh and tofu production. However, the process of peeling and separating soybean skin in small and medium industries is still commonly performed manually, resulting in low efficiency and high processing time. This study aims to design a soybean skin peeling and separating machine using a dry process method with a capacity of 15 kg/hour. The research method used is quantitative, including literature study, numerical calculation, 3D design using SolidWorks, and simulation analysis. The machine utilizes a toothed peeling cylinder driven by a 0.25 HP electric motor and a blower system to separate soybean skin from seeds. The test results showed that the 2 mm gap variation produced the most optimal peeling result with 86% peeled soybeans and 93% intact seeds. The blower operated effectively at approximately 980 rpm with an airflow velocity of 6.76 m/s without causing seed loss. Simulation results showed a maximum stress of 35.74 MPa, displacement of 0.481 mm, and Factor of Safety (FOS) value of 6, indicating that the frame structure is safe for operation. Frequency analysis also confirmed that the machine is safe from resonance during operation. Therefore, the designed machine is considered effective, stable, and suitable for soybean processing in small and medium industries.
Analisis Simulasi Struktur Mesin Penggiling Ketela Menggunakan Sistem Rotary screw Berbasis SolidWorks Simulation Nazwa Naufal Noviantoro; Rany Puspita Dewi
Journal of Mechanical Engineering and Applied Technology Vol. 4 No. 2 (2026): VOLUME 4 ISSUE 2 YEAR 2026 (JULY 2026)
Publisher : Politeknik Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32497/jmeat.v4i2.7681

Abstract

Cassava is one of the important agricultural commodities widely processed into various food products. The grinding process is a crucial stage that affects product quality and production efficiency. However, most small-scale cassava processing industries still utilize conventional grinding equipment with limited capacity and low operational efficiency. Various studies have been conducted to develop cassava processing machines, including slicing, peeling, grating, and grinding machines. Nevertheless, previous research has mainly focused on machine design and performance testing, while structural strength evaluation prior to manufacturing has received limited attention. Therefore, this study aims to analyze the structural characteristics of a cassava grinding machine frame using a rotary screw system through Finite Element Analysis (FEA) based on SolidWorks Simulation. The research was conducted by developing a three-dimensional machine model and performing static structural Simulations using SolidWorks Simulation. The frame material was modeled as alloy steel, while a static load of 1000 N was applied to represent the combined weight of machine components and cassava material during operation. The evaluated parameters included displacement, stress distribution, and factor of safety. The Simulation results showed a maximum displacement of 1.95 mm, indicating that the frame deformation remained relatively small and did not affect machine performance. The maximum stress obtained was 108 MPa, which was significantly lower than the material yield strength of 620 MPa, indicating that the structure operated within the elastic region. In addition, the minimum factor of safety was 5.7, demonstrating that the frame possessed a high level of structural safety under the applied loading conditions. Based on the Simulation results, the designed cassava grinding machine frame using a rotary screw system is structurally safe and feasible for manufacturing because it is capable of withstanding the intended operational loads.
Co-Authors Adityo Noor Setyo Hadi Dharmo Arif Rahman Saleh Bagus Yustia Cahyo Cahyo sejati Cahyo Sejati Eva Shandy Ratu Aliyyu Herru Santosa Budiono Kholik, Muhammad Nazwa Naufal Noviantoro Pebi Riyanto Raka Mahendra Sulistiyo Ramlan Manullang Sigit Iswahyudi Sigit Joko Purnomo Sigit Mujiarto Sri Hastuti Sri Widodo Tri Puji Rahayu Trisma Jaya Saputra Trisma Jaya Saputra Trisma Jaya Saputra Wandi Arnandi Wandi Arnandi Wandi Arnandi