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All Journal Jurnal Teknik Mesin JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Infotekmesin Mekanika: Majalah Ilmiah Mekanika Abdi Masya Jurnal Patria Bahari Teknika Jurnal Suara Pengabdian 45 Cakrawala: Jurnal Pengabdian Masyarakat Global Politeknosain Panthera : Jurnal Ilmiah Pendidikan Sains dan Terapan Jurnal Polimesin Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer Panggung Kebaikan : Jurnal Pengabdian Sosial Jurnal Pendidikan Teknik Mesin
Priyanto, Kaleb
Universitas Negeri Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Social Sciences Transportation Other

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Peningkatan Kompetensi Pengecoran Logam melalui Pemanfaatan Tungku Berbahan Bakar LPG dan Kowi Berbasis Limbah di SMK Negeri 2 Kudus Rusiyanto Rusiyanto; Rahmat Doni Widodo; Kaleb Priyanto; Ruben Bayu Kristiawan; Muhammad Zakky Mubarok; Muhammad Emir Al Hakim; Yudistira Rijal Andika; Hibban Pasya Hafid; Julivan Brian Womsiwor
Cakrawala: Jurnal Pengabdian Masyarakat Global Vol. 4 No. 3 (2025): Agustus: Cakrawala: Jurnal Pengabdian Masyarakat Global
Publisher : Universitas 45 Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30640/cakrawala.v4i3.4993

Abstract

This community service program aimed to improve vocational students’ competence in metal casting by introducing LPG-fueled furnaces and UNNES crucibles fabricated from evaporation boat waste. The partner, SMK Negeri 2 Kudus, faced two main challenges: limited utilization of aluminum scrap from automotive practice and the absence of affordable, durable crucibles for repeated casting activities. The program applied a structured approach consisting of socialization, training, mentoring, and evaluation. Activities included theoretical instruction, pretest–posttest assessment, and hands-on workshops involving furnace operation, crucible utilization, mold preparation, and aluminum casting. Results demonstrated significant improvements: the average pretest score of 4.85 increased to 9.0 in the posttest, reflecting an 85.57% gain in competence. Qualitative observations showed that students developed greater confidence, teamwork, and adherence to safety standards. Beyond competence improvement, the innovation provided a cost-effective and sustainable solution for recycling aluminum scrap and reducing dependence on expensive imported crucibles. The program effectively integrated research-based technology into vocational education and aligned with the Teaching Factory model. This collaboration between university and school can serve as a replicable model for other vocational institutions seeking to strengthen practical skills, sustainability, and industry relevance.
Peningkatan Keterampilan dan Produksi Pakan Berbasis Silase bagi Peternak Sapi di Kecamatan Musuk Gojandra, Farda Pega Libra; Priyanto, Kaleb; Cahyanto, Septian Eko; Saputra, Dimas Chandra; Wibowo, Andika Agus Tri; Rahmawati, Adinuringtyas Herfi; Sarai Enita
Jurnal Suara Pengabdian 45 Vol. 4 No. 3 (2025): September: Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pwg4y651

Abstract

Program pengabdian kepada masyarakat ini bertujuan untuk meningkatkan keterampilan dan kapasitas peternak sapi di Kecamatan Musuk, Boyolali, melalui penerapan teknologi pencacah hijauan dan teknik fermentasi silase. Program dilaksanakan dengan pendekatan partisipatif yang melibatkan 15 peternak anggota Slamet Jaya Farm selama delapan bulan. Kegiatan meliputi perancangan dan pembuatan mesin pencacah sederhana, pelatihan teknis, demonstrasi praktik pembuatan silase, serta pendampingan berkelanjutan. Mesin pencacah yang dirancang menggunakan motor 1 HP dengan kapasitas 200 kg/jam terbukti mampu menurunkan waktu pengolahan dan menghasilkan ukuran cacahan hijauan seragam 2–5 cm. Hasil program menunjukkan bahwa 82% peserta berhasil mengoperasikan mesin dan memproduksi silase berkualitas dengan pH optimal 3,8–4,2, sedangkan 71% mulai memanfaatkan limbah pertanian sebagai bahan baku silase. Program ini membuktikan bahwa teknologi tepat guna yang dikombinasikan dengan pelatihan intensif mampu meningkatkan pengelolaan pakan dan mendukung keberlanjutan usaha peternakan sapi lokal.
Peningkatan Kesejahteraan UKM Mulyo Waras melalui Pelatihan Pembuatan Pakan Domba dengan Mesin Pencacah Semi-Otomatis: Improving The Welfare Of UKM Mulyo Waras By Training In Making Sheep Feed Using A Semi-Automatic Chopper Machine Karminto, Karminto; Priyanto, Kaleb; Heru Palmiyanto, Martinus; Hari Priyambodo, Bambang; Suhartoyo, Suhartoyo; Tritmoko, Nugroho
Jurnal Suara Pengabdian 45 Vol. 2 No. 2 (2023): Juni: Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/pengabdian45.v2i2.762

Abstract

Wonogiri Regency, Central Java, is famous for its large number of residents who work as breeders, especially sheep/goat breeders. The feed for goats/sheep breeders in Wonogiri district is sourced from weeds. However, the enumeration was still done manually using a sickle, so the enumeration process was ineffective because it required more time and effort. Through this community service scheme, the process of making a machine for chopping weeds is carried out which will later be used as fodder for goats/sheep, especially in the Wonogiri area. The machine is driven by an electric motor and there is a chopping knife which is designed to be more effective. The results of this community service program show that the increase in sheep feed production increased from 200 kg/day before using the machine to 350 kg/day or an increase of up to 75% when compared to without the chopping machine.
Desain Pisau Pengurai dan Sistem Pengayak serta Uji Produk Mesin Pengolah Sabut Kelapa sebagai Bahan Mentah Komposit Tarigan, Roy Aries Permana; Priyanto, Kaleb; Sodikin, Jenal; Pratama, M R; Ramadhani, I R
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.v15i1.2097

Abstract

This research aims to design a decomposing blade, sieving system, and test machine products. The method for completing coconut fiber processing machines consists of three stages, namely the design and production process stages, as well as machine product testing. This research produces the following data, namely the design of the untangling knife which is a combination of the functions of the coir untangling knife for random and woven results. Calculation of the equilibrium moment on the shaft obtained a value of 𝑅𝑉𝐵 is 28.68 N and the reaction at point A was 𝑅𝑉𝐴 is 28.32 N, with the diameter of the shaft used in the coconut fiber sieving machine transmission system being Ø28 mm. Fiber uniformity is obtained from twice decomposition processes, whereas the level of fiber/powder uniformity is influenced by the long sieving process time and also the high rotational speed of the sieve.
CHARACTERISTICS OF HARDNESS AND MICROSTRUCTURE OF RECYCLED PISTONS MANUFACTURED BY SAND CASTING PROCESS Priyambodo, Bambang Hari; Handoko; Felixtianus Eko Wismo Winarto; Amida Tri Andani; Martinus Heru Palmiyanto; Kaleb Priyanto
Jurnal Dinamika Vokasional Teknik Mesin Vol. 10 No. 2 (2025)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v10i2.86156

Abstract

Motorcycle piston waste, made from aluminum, is often poorly managed despite its advantages in corrosion resistance and thermal conductivity. This study aims to enhance the economic value of piston waste through recycling using the sand casting method. The melting process was conducted at a temperature of 843°C, followed by casting into sand molds. The recycled product is intended for use as a ship propeller component. Tests performed included Vickers hardness testing and microstructural analysis to evaluate the mechanical properties and material characteristics. The results showed that the recycled material exhibited an average hardness of 77.2 kg/mm², consistent with standard aluminum hardness. Microstructural analysis revealed the presence of porosity which may affect mechanical strength; however, this porosity did not reduce the material's resistance to mechanical damage and provided good toughness. Based on these findings, it can be concluded that motorcycle piston waste recycled by sand casting at 843 °C has potential for use in manufacturing high-value components such as ship propellers, considering the hardness quality and microstructural characteristics of the material.
Taguchi-based optimization of CNC turning parameters to enhance surface finish of AISI 1045 steel Kriswanto, Kriswanto; Briantoro, Oktova Yusuf; Naryanto, Rizqi Fitri; Priyanto, Kaleb; Jamari, Jamari; Setiyawan, Andri
Jurnal Polimesin Vol 23, No 6 (2025): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i6.7107

Abstract

Surface roughness is a critical indicator of machining quality, directly affecting the functional performance and service life of manufactured components. This study aims to optimize the surface roughness of AISI 1045 steel by varying parameters (cutting speed, feed rate, and depth of cut) using Taguchi L9 orthogonal array. Experiments were conducted on a FANUC 0i-Mate CNC lathe using Al-TiN-coated VNMG inserts. Moreover, the surface roughness was measured in accordance with ISO standards. Analysis of Variance (ANOVA) revealed the depth of cut was the most influential factor (45.21%), followed by cutting speed and feed rate. The Signal-to-Noise (S/N) ratio was identified as optimal surface roughness of 0.323 µm (N5 grade) at the parameter, with a cutting speed of 240 mm/min, a feed rate of 0.2 mm/rev, and a depth of cut of 0.6 mm. The novelty of this study is the demonstration that Taguchi's design and ANOVA combined can achieve reliable optimization results with considerably reduced experimental effort and offer practical industrial deployment, including for Small and Medium-sized Enterprises (SMEs). 
Design and Implementation of a 3-Phase Induction Motor Controller Simulator Using Programmable Logic Controller (PLC) and Human Machine Interface (HMI) Integration Priyanto, Kaleb; Sudjana, Immanuel Eltian; Almay, Hans Nashirudin; Kriswanto; Haikal; Enita, Sarai
Infotekmesin Vol 17 No 1 (2026): Infotekmesin: Januari 2026
Publisher : P3M Politeknik Negeri Cilacap

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35970/infotekmesin.v17i1.2750

Abstract

This study was conducted as a response to the limited availability of practical learning tools in industrial automation education and training. In this research, a three-phase induction motor control simulator was designed and developed by integrating a Programmable Logic Controller (PLC) and Human Machine Interface (HMI) system. The main objective is to enhance learners' understanding and practical skills in designing and operating industrial control and automation systems through an interactive learning approach. The development process involved designing the system architecture using an Omron CP2E PLC and NB-series HMI, electrical integration, ladder diagram programming, and user interface development. The simulator was then tested to ensure its proper functionality and effectiveness in supporting the learning process. The results demonstrate successful system integration, reliable control logic, and an intuitive user interface via the HMI. This research contributes a structured and cost-effective educational tool that is well-suited for automation engineering and technical training programs.
PERBANDINGAN SIFAT IMPAK DAN KETAHANAN API KOMPOSIT BERPENGUAT SERAT ALAM DENGAN FILLER BENTONITE CLAY Kaleb Priyanto; Andika Wibowo; Roy Tarigan; Ridwan Afandi
Jurnal Pendidikan Teknik Mesin Vol. 12 No. 2 (2025): Jurnal Pendidikan Teknik Mesin
Publisher : Program Studi Pendidikan Teknik Mesin Fakultas Keguruan dan Ilmu Pendidikan Universitas Sriwiajaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jptm.v12i2.81

Abstract

This research presents a comparative study on the impact strength and combustion resistance of polyester matrix composites reinforced with natural fibers and bentonite filler. Two types of natural fibers—pineapple leaf fiber and sansevieria fiber—were used as reinforcement, with 5% bentonite added as filler in each composite variation. Impact testing was conducted in accordance with ASTM D-4812-99, while combustion resistance was evaluated based on ASTM D-635. The results indicate that the composite reinforced with pineapple leaf fiber exhibited higher impact strength than that reinforced with sansevieria fiber, with the highest value recorded at 0.79 J/mm² for the N50B5 variation. The addition of up to 5% bentonite significantly enhanced both impact strength and combustion resistance. The S50B5 variation showed the best fire resistance performance, with a Time to Ignition (TTI) of 10.87 seconds and a Rate of Burning (ROB) of 11.63 mm/min. This improvement in combustion resistance is attributed to bentonite’s role as a filler that reduces oxygen penetration by filling gaps within the matrix and forming a protective barrier against heat. Thus, the addition of bentonite up to 5% can improve the mechanical properties and thermal resistance of polyester-based composites, and make them superior for applications that require fire and impact resistance.
EVALUASI KOLEKTIF KESELAMATAN LIFTING INDONESIA: PENYEBAB KECELAKAAN DAN EFEKTIVITAS PENGENDALIAN RISIKO DI INDUSTRI Tunggul Ulung Adi Kusumo; Muhammad Tegar Miftakhlana; Muhammad Isnaini Nuur Rohman; Afix Zulfikri; Muhammad Naufal Syaikhany; Kaleb Priyanto
JPB : Jurnal Patria Bahari Vol. 6 No. 1 (2026): JPB: MEI 2026
Publisher : PPPM POLTEKPEL SORONG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.54017/jpb.v6i1.236

Abstract

Operasi pengangkatan beban (lifting) merupakan aktivitas dengan profil risiko tinggi yang mendominasi statistik kecelakaan kerja di sektor manufaktur dan industri berat Indonesia. Penelitian ini bertujuan untuk mensintesis berbagai temuan mengenai penyebab kecelakaan dan efektivitas pengendalian risiko guna menyusun peta jalan evaluasi kolektif yang adaptif bagi industri nasional. Penelitian dilakukan menggunakan metode Systematic Literature Review (SLR) dengan prosedur PRISMA melalui pencarian literatur komprehensif pada basis data SINTA, Garuda, dan Google Scholar untuk periode 2021-2025. Data dianalisis melalui teknik meta-synthesis dengan pengkodean tematik untuk mengevaluasi karakteristik operasional, pola kegagalan, dan langkah mitigasi dari studi-studi terpilih. Hasil penelitian mengungkapkan bahwa faktor manusia mendominasi penyebab kecelakaan lifting (>90%), terutama akibat kurangnya pelatihan, operator tidak bersertifikat, serta fenomena normalisasi penyimpangan prosedur. Analisis teknis menunjukkan bahwa komponen wire rope memiliki nilai Risk Priority Number (RPN) tertinggi, sementara integrasi metode FMEA dan HAZOP terbukti paling efektif dalam menurunkan potensi kegagalan sistematis secara terukur. Selain itu, ditemukan bahwa profil risiko bersifat spesifik sektoral sehingga memerlukan pendekatan manajemen risiko yang adaptif terhadap kondisi lokal masing-masing klaster industri. Evaluasi kolektif ini menyimpulkan bahwa pengendalian risiko yang optimal harus menggabungkan kekuatan teknis instrumen analisis dengan penguatan budaya keselamatan serta kompetensi operator sebagai lini pertahanan terakhir. Implementasi SMK3 yang konsisten dan berbasis bukti menjadi prasyarat mutlak untuk mencapai lingkungan kerja nihil kecelakaan di industri Indonesia.
Mechanical Properties of Unsaturated Polyester Composites Reinforced with Eggshell-Derived CaCO₃ Bio-filler as a Sustainable Material Kristiawan, Ruben Bayu; Priyanto, Kaleb; Shohih, Esa Nur
Mekanika: Majalah Ilmiah Mekanika Vol 24, No 2 (2025): MEKANIKA : Majalah Ilmiah Mekanika
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/mekanika.v24i2.104039

Abstract

The increasing demand for sustainable engineering materials has encouraged the development of polymer composites reinforced with bio-based fillers. Eggshell waste, which contains more than 90% biogenic calcium carbonate, represents an abundant and low-cost resource with potential as a reinforcing agent in thermoset composites. In this study, unsaturated polyester resin Bayesian Quantitative Trait Nucleotide (BQTN) 157 was reinforced with eggshell-derived calcium carbonate particles sized 105-149 µm, incorporated at volume fractions of 1-5%. Test specimens were produced using standardized moulds and evaluated for tensile properties in accordance with American Society for Testing and Materials (ASTM) D638 and for impact resistance using the Izod in ASTM D4812. The tensile results indicated a reduction in Ultimate Tensile Strength (UTS) of 6.7%, from 20.85 MPa for neat resin to 19.46 MPa at 5% filler, while the elastic modulus increased by 9.7%, from 1.44 GPa to 1.58 GPa. The impact resistance improved with filler addition, reaching a maximum of 91.75 J/m at a 3% filler concentration, representing a 15.7% increase, before slightly declining at higher concentrations. These findings demonstrate that eggshell-derived calcium carbonate is a promising sustainable bio-filler, with 3% volume identified as the optimum composition for practical composite applications.
Co-Authors Afif, Dany Faishal Afix Zulfikri Almay, Hans Nashirudin Amida Tri Andani Andika Wibowo Andri Setiyawan Ardiyanto, Farit Arif Hidayat Purwono Atmoko, Nugroho Tri Bambang Hari Priyambodo Bambang Hari Priyambodo Bambang Margono Briantoro, Oktova Yusuf Cahyanto, Septian Eko Daniel Agung Cristanto Dio Agusta P Edi Cahyono Enita, Sarai Esa Nur Shohih Felixtianus Eko Wismo Winarto Gojandra, Farda Pega Libra Haikal Haikal Haikal Handoko Haniel, Haniel Hari Priyambodo, Bambang Hibban Pasya Hafid I R Ramadhani J. Jamari Jenal Sodikin Julivan Brian Womsiwor Karminto Karminto Karminto, Karminto Khoirul Huda Krisna Saka Aji Pangestu Kriswanto Kriswanto Kriswanto, Kriswanto Lilik Dwi Styana Lujeng Widodo, Lujeng M R Pratama Martinus Heru Palmiyanto Martinus Heru Palmiyanto Martinus Heru Palmiyanto Moch. Chamim Muhammad Emir Al Hakim Muhammad Isnaini Nuur Rohman Muhammad Naufal Syaikhany Muhammad Tegar Miftakhlana Muhammad Zakky Mubarok Ninda Kurniadi Nugroho, Ananda Tri Bintang Nur Hidayah, Fatimah Petrus Heru Sudargo Pratama, M R Putra, Fajar Waskhita Rahmat Rahmat Doni Widodo Rahmawati, Adinuringtyas Herfi Ramadhani, I R Rauuf Nur Fattah Ridwan Afandi Rizqi Fitri Naryanto Roy Aries Permana Tarigan Roy Tarigan Ruben Bayu Kristiawan Rusiyanto Rusiyanto Saputra, Dimas Chandra Sarai Enita Setyo Bhahak Fendi Baihaqi Sodikin, Jenal Sudjana, Immanuel Eltian Suhartoyo Suhartoyo Suhartoyo Suhartoyo, Suhartoyo Tarigan, Roy Aries Permana Tritmoko, Nugroho Tunggul Ulung Adi Kusumo Wibisono, Gilang Wibowo, Andika Agus Tri Yudistira Rijal Andika