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All Journal Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Prosiding SNATIF Jurnal Teknik Mesin JMPM (Jurnal Material dan Proses Manufaktur) JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Teknika Jurnal Suara Pengabdian 45 Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri
Martinus Heru Palmiyanto
Universitas Negeri Yogyakarta
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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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.
Peningkatan Kesadaran Masyarakat dalam Pencegahan Penyebaran Virus Pasca Pandemi melalui Pembuatan dan Pemanfaatan Alat Cuci Tangan Portabel di Kecamatan Colomadu Priyanto, Kaleb; Priyambodo, Bambang Hari; Palmiyanto, Martinus Heru; Enita, Sarai
Jurnal Suara Pengabdian 45 Vol. 4 No. 1 (2025): Maret: Jurnal Suara Pengabdian 45
Publisher : LPPM Universitas 17 Agustus 1945 Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56444/zn6ymn80

Abstract

Pandemi COVID-19 telah mengubah perilaku masyarakat dalam menjaga kebersihan, terutama dalam kebiasaan mencuci tangan. Namun, setelah pandemi berakhir, kebiasaan ini mulai berkurang, ditambah dengan terbatasnya sarana cuci tangan yang tersedia. Di Kecamatan Colomadu, masih ditemukan rendahnya kesadaran masyarakat dalam menjaga kebersihan tangan. Untuk mengatasi hal tersebut, tim pengabdian masyarakat menginisiasi penyediaan alat cuci tangan portabel di beberapa fasilitas umum sebagai upaya untuk meningkatkan kesadaran masyarakat akan pentingnya kebersihan tangan. Kegiatan ini meliputi perencanaan dan desain alat, pembuatan dan instalasi, sosialisasi kepada masyarakat, serta monitoring dan perawatan berkala. Hasil pengabdian menunjukkan bahwa enam unit alat cuci tangan portabel yang dipasang di kantor kecamatan, pasar, dan puskesmas telah dimanfaatkan secara intensif oleh masyarakat, meningkatkan frekuensi kebiasaan mencuci tangan dan memperoleh apresiasi dari pemerintah setempat. Desain alat yang ergonomis dan sistem drainase yang efektif mendukung keberhasilan program ini, meskipun beberapa tantangan dalam perawatan dan koordinasi masih perlu diatasi. Kegiatan ini berhasil meningkatkan kesadaran kebersihan tangan dan dapat dijadikan model untuk implementasi serupa di wilayah lain guna mencegah penyebaran penyakit menular pasca pandemi.
FLEXURAL CHARACTERISTICS OF ROLL-WRAPPED GFRP COMPOSITE HOLLOW SQUARE TUBE Priyanto, Kaleb; Haniel, Haniel; Palmiyanto, Martinus Heru; Priyambodo, Bambang Hari
Jurnal Teknik Mesin (Journal Of Mechanical Engineering) Vol 14, No 2 (2025)
Publisher : Universitas Mercu Buana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22441/jtm.v14i2.33558

Abstract

This research characterizes the bending behavior of hollow square tube glass fiber-reinforced polymer (GFRP) composites using the roll-wrapping method. CSM (Chopped Strand Mat) and WRM (Woven Roving Mat) glass fibers were chosen as reinforcing constituents with epoxy as the matrix. Glass fiber was chosen because it has strength, stiffness, lightness, corrosion resistance and high-temperature resistance. These properties can be utilized for frame and structural applications in various types of transportation equipment. The roll-wrapping technique was chosen for manufacturing GFRP composite hollow square tubes. The roll-wrapping technique is the simplest method and does not require a lot of money. The bending test using the Three Point Bending method is based on the ASTM D7264 test standard. In addition, macroscopic observations of the specimen's cross-section after experiencing a bending load are carried out to determine the product failure criteria. Bending tests were conducted on two types of GFRP composites, hollow square tube products produced from CSM and WRM fibers. The bending test results showed that the CSM fiber-reinforced composite has higher stress values (167.122 MPa) and strain (0.055%) compared to the WRM fiber-reinforced composite, which has stress values of 78.339 MPa and strain of 0.030%. The results of macro photo analysis show that random fiber composites dominate tensile failure while woven fiber composites dominate compressive failure. Failure analysis through macro photos is a critical process in determining the physical root cause of the problem
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.
THE INFLUENCE OF COLD ROLLING TREATMENT ON THE SS 316L SURFACE PROPERTIES Majid, Aulia; Palmiyanto, Martinus Heru
Jurnal Dinamika Vokasional Teknik Mesin Vol. 9 No. 1 (2024)
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v9i1.72757

Abstract

The biomedical field is increasingly developing with the creation of biomaterial dental crown products that can be used if teeth are damaged from an aesthetic perspective. 316L stainless steel is a biomaterial because it has good corrosion resistance and high mechanical characteristics. However, the corrosion resistance and mechanical strength of 316L stainless steel still need to be improved so that it can be a better dental crown material. This research objective is to increase the mechanical value of 316L stainless steel by cold rolling treatment. Variations in reducing thickness by cold rolling consist of 0%, 5%, and 12%. After that, the specimen will be tested for Vickers hardness on the specimen surface and wettability. The results obtained after the treatment were carried out that the greater the variation in reducing the thickness of the specimen, the greater the Vickers hardness value. However, in the wettability test, the contact angle value decreased along with increasing variations in thickness reduction. The increase in surface hardness value is due to the granules becoming denser due to the influence of cold rolling. This reduces the contact angle value so that the value of all variations becomes less than 90Ëš.
Effect of Coir Fiber and Rice Husk Ash on Mechanical and Burning-Rate Properties of Recycled HDPE Composites Rajendra Vian Pradiksa; Kaleb Priyanto; Kriswanto Kriswanto; Khoirul Huda; Martinus Heru Palmiyanto; Bambang Hari Priyambodo; Roy Aries Permana Tarigan; Deslana Avinda Krisna Putra
Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Vol. 4 No. 2 (2026): Manufaktur : Publikasi Sub Rumpun Ilmu
Publisher : Asosiasi Riset Ilmu Teknik Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61132/manufaktur.v4i2.1526

Abstract

Recycled high-density polyethylene (rHDPE) offers a sustainable alternative to virgin plastics, but repeated processing can degrade its mechanical properties, motivating reinforcement with natural fibers and fillers. This study investigated the combined effect of coir fiber and rice husk ash (RHA) on the mechanical and burning-rate characteristics of rHDPE composites using a two-stage experimental design. In Stage 1, coir fiber content (5, 10, and 15 vol.%) was varied to determine the optimum reinforcement level based on impact strength. In Stage 2, the selected optimum fiber content was combined with RHA (5 and 10 vol.%) to evaluate tensile strength and burning behavior, tested according to ASTM D638, ISO 179, and ASTM D635, respectively. Results showed that 10 vol.% coir fiber produced the highest impact strength (16.36 kJ/m²), while higher fiber loading reduced toughness due to agglomeration and void formation. The composite with 5 vol.% RHA exhibited superior tensile strength (10.46 ± 1.23 MPa), whereas 10 vol.% RHA improved ignition resistance, extending ignition time to 14 s. These findings demonstrate that alkali-treated coir fiber and RHA can enhance rHDPE performance, supporting the valorization of plastic and agricultural waste into sustainable composite materials.
Co-Authors Agung Supriyanto Arif Setyo Nugroho Atmoko, Nugroho Tri Bambang Hari Priyambodo Bambang Hari Priyambodo Deslana Avinda Krisna Putra Edi Cahyono Enita, Sarai Hakim, Jamirul Haniel, Haniel Hari Priyambodo, Bambang Jamirul Hakim Johanes Wawan Joharwan Joharwan, Johanes Wawan Karminto Karminto Karminto, Karminto Khoirul Huda Kriswanto Kriswanto Majid, Aulia Priyanto, Kaleb Rajendra Vian Pradiksa Roy Aries Permana Tarigan Stefanus Unjanto, Stefanus Suhartoyo Suhartoyo Suhartoyo Suhartoyo, Suhartoyo Thoharudin, Thoharudin Tritmoko, Nugroho