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All Journal JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Infotekmesin Jurnal Pengabdian West Science Jurnal Pendidikan Teknik Mesin
Kriswanto
Universitas Negeri Semarang
Humanities Automotive Engineering Computer Science & IT Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering Public Health Social Sciences Other

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Servis Jitu dan Hemat (JIMAT) Sepeda Motor Himpro Teknik Mesin FT UNNES 2024 Ranu Iskandar; Rizqi Fitri Naryanto; Rahmat Doni Widodo; Kriswanto; Abdillah Habib Al Misbah; Muh. Abiyyu Hafizh; Bakti Laksono; Devi Aisa Fitri; Muh. Winarno Burhanudin; Nadhiva Qothrunnada; Ja'far Faris Nashiruddin; Muh. Rizki Ivan Setiawan; Maharudin Wira Pratama; R. M. Rois Alwidad; Dzaky Riyavika Prasetyo; Andra Andika Putra; Muh. Ridwan Prananda; Ajhi Bangun Priambudi; Dian Refiana; Satria Bayu Segoro
Jurnal Pengabdian West Science Vol 3 No 06 (2024): Jurnal Pengabdian West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jpws.v3i06.1206

Abstract

Masifnya penggunaan sepeda motor membuat polusi dan tingkat kecelakaan meningkat sehingga perlu adanya upaya bersama untuk menurunkan dampak tersebut. Kegiatan Himpro Teknik Mesin ini bertujuan untuk menservis sepeda motor agar kembali ke performa terbaiknya. Tahapan kegiatan yang dilakukan yaitu: (1) Persiapan, (2) Sosialisasi Kegiatan, (3) Pelaksanaan, (4) Evaluasi, dan (5) Pelaporan. Hasil kegiatan ini menunjukkan bahwa 264 unit sepeda motor telah dilakukan servis pada tanggal 7-8 Mei 2024 di Halaman Masjid Ulul Al Bab UNNES. Garansi diberikan 1x24 jam setelah selesai servis. Namun sampai dengan selesainya hari kedua tidak ada keluhan dari customer sehingga sepeda motor yang diservis benar-benar sudah tepat. Artinya semua servis yang dilakukan membuat customer puas.
Characterization of HDPE Waste-Bentonite Clay-Jute Fiber Composite Materials: Impact Strength and Density Analysis Thoriq Bintang Fadillah; Kriswanto; Kaleb Priyanto; Immanuel Eltian Sudjana
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 10 No. 1 (2026): June 2026 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v10i1.15732

Abstract

This study evaluates composite materials' impact strength and density from recycled high-density polyethylene (HDPE) waste reinforced with woven jute fibers and filled with bentonite clay at varying volume fractions (2%, 4%, 6%, and 8%). The composites were fabricated using a hot press molding technique. Density was measured following ASTM D792, while impact strength was assessed using the unnotched Charpy method based on ISO 179. Results showed that increasing bentonite content raised the composite's density due to the higher specific gravity of the clay. Impact strength exhibited a non-linear behavior, peaking at 4% bentonite with a 13.5% increase compared to the 2% variant. However, further increases in clay content led to a significant drop in impact strength, primarily due to filler agglomeration and reduced matrix-fiber interfacial bonding, which resulted in brittle fracture modes. Macro-photographic analysis of fracture surfaces confirmed this trend, revealing ductile failure, fiber pullout at low clay contents, and sharp, brittle fractures at higher contents. These findings highlight the importance of optimizing filler content to balance density and mechanical performance, offering insights for developing sustainable composite materials for structural and industrial applications. Keywords: recycled HDPE, natural fiber composite, bentonite clay, impact strength, density
Effect of Eggshell Waste Filler Content on Impact Strength and Physical Properties of Jute Fiber Reinforced Recycled HDPE Composites Ikhsan Eka Pramudya; Kriswanto; Kaleb Kaleb Priyanto; Muhammad Eka Rizky Ramadhan
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 10 No. 1 (2026): June 2026 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v10i1.15739

Abstract

This study investigates the influence of eggshell waste-derived calcium carbonate (CaCO₃) filler content on the impact strength and density characteristics of jute fiber reinforced recycled high-density polyethylene (r-HDPE) composites. The research addresses the dual challenge of plastic waste management and agricultural waste utilization by developing sustainable composite materials suitable for automotive applications. Eggshell waste was mechanically processed to produce CaCO₃ filler particles passing through 300-mesh screens, while r-HDPE was sized to pass through 50-mesh screens. Jute fibers in plain weave configuration were subjected to alkaline treatment using 5% NaOH solution to enhance fiber-matrix adhesion. Composite specimens were fabricated using compression molding technique with CaCO₃ filler content varied systematically at 0%, 2%, 4%, 6%, and 8% by volume fraction. Impact testing was conducted according to ISO 179 standards using Charpy impact testing, while density measurements followed ASTM D 792 procedures. Macroscopic failure analysis was performed through stereomicroscopic examination of fracture surfaces. The results revealed complex relationships between filler content and mechanical performance. The addition of 2% CaCO₃ produced marginal impact strength improvement of 0.5%, while higher filler loadings of 4%, 6%, and 8% resulted in progressive deterioration of 1.1%, 1.8%, and 1.9% respectively compared to the baseline composite. Density measurements showed systematic increases of 5.1%, 13.2%, 16.3%, and 23.2% for 2%, 4%, 6%, and 8% CaCO₃ content respectively, confirming successful filler incorporation. Macroscopic failure analysis revealed a transition from ductile to brittle fracture behavior with increasing filler content, characterized by reduced fiber pull-out lengths and cleaner fracture surfaces. The findings indicate that while eggshell-derived CaCO₃ offers environmental benefits through waste utilization, optimal mechanical performance requires careful control of filler content and surface modification strategies to achieve effective particle-matrix compatibility in sustainable composite systems
Design and Implementation of a 3-Phase Induction Motor Controller Simulator Using Programmable Logic Controller (PLC) and Human Machine Interface (HMI) Integration Kaleb Priyanto; Immanuel Eltian Sudjana; Hans Nashirudin Almay; Kriswanto; Haikal; Sarai Enita
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.
PENGEMBANGAN MEDIA INTERAKTIF ANDROID UNTUK MATERI PENGELASAN GMAW Teknik 1F DAN 2F DI SMK Lu'ni Maulana; Ari Dwi Nur Indriawan Musyono; Basyiruno; Kriswanto
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.v12i2.259

Abstract

Penelitian ini bertujuan untuk mengembangkan dan menguji kelayakan media pembelajaran interaktif berbasis Android pada materi Gas Metal Arc Welding (GMAW) posisi 1F dan 2F untuk siswa SMK. Metode yang digunakan adalah Research and Development (R&D) dengan Four-D model yang meliputi tahap Define, Design, Develop, dan Disseminate. Media dikembangkan dalam bentuk aplikasi Android yang memuat petunjuk penggunaan, materi pembelajaran, dan kuis evaluatif. Validasi oleh dua ahli materi dan dua ahli media menunjukkan bahwa media berada dalam kategori “sangat layak” dengan skor kelayakan rata-rata 82% dan skor kepraktisan 78,2%, yang termasuk kategori “praktis”. Hasil uji coba menunjukkan bahwa media ini membantu meningkatkan pemahaman siswa serta dapat digunakan secara mandiri tanpa koneksi internet. Dengan demikian, media ini dinilai efektif dalam meningkatkan keterlibatan dan hasil belajar siswa, serta relevan untuk diterapkan dalam pembelajaran vokasi berbasis teknologi.
Co-Authors Abdillah Habib Al Misbah Ajhi Bangun Priambudi Andra Andika Putra Ari Dwi Nur Indriawan Musyono Bakti Laksono Basyiruno Devi Aisa Fitri Dian Refiana Dzaky Riyavika Prasetyo Haikal Hans Nashirudin Almay Ikhsan Eka Pramudya Immanuel Eltian Sudjana Iskandar, Ranu Ja'far Faris Nashiruddin Kaleb Kaleb Priyanto Lu'ni Maulana Maharudin Wira Pratama Muh. Abiyyu Hafizh Muh. Ridwan Prananda Muh. Rizki Ivan Setiawan Muh. Winarno Burhanudin Muhammad Eka Rizky Ramadhan Nadhiva Qothrunnada Priyanto, Kaleb R. M. Rois Alwidad Rizqi Fitri Naryanto Sarai Enita Satria Bayu Segoro Thoriq Bintang Fadillah