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All Journal Jurnal Rekayasa Mesin JOURNAL OF MECHANICAL ENGINEERING, MANUFACTURES, MATERIALS AND ENERGY Infotekmesin Piston: Journal of Technical Engineering Jurnal Pengabdian West Science AMMA : Jurnal Pengabdian Masyarakat Lentora Nursing Journal IJIMCE : International Journal of Innovation in Mechanical Construction and Energy Jurnal Pendidikan Teknik Mesin
Kriswanto
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Aerospace Engineering Humanities Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Nursing Public Health Social Sciences

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Ramadhanan Bareng Teknik Mesin (RBTM) 2024: Cara Mahasiswa Teknik Mesin UNNES dalam Mengisi Kegiatan di Bulan Ramadhan Iskandar, Ranu; Naryanto, Rizqi Fitri; Widodo, Rahmat Doni; Kriswanto; Misbah, Abdillah Habib Al; Harahap, M. Abiyyu Hafizh; Firmansyah, Muhammad Raihan; Amirudin, Eka; Panjaitan, Eliza Laura; Hamdi, Ilham Falah; Dharma, Mahardika Setya; Farras, Herdin Bergas; Saputra, Muhammad Dwi; Saputra, Muhammad Rizal; Mahasurya, Muhammad Saddam; Suhartian, Muhammad Ryo; Maulana, Muhammad Akmal; Ulhakim, Muhammad Zia; Natasya, Alya Widya; Alfarizy, Ibnu; Nugroho, Cahyo Adin
Jurnal Pengabdian West Science Vol 3 No 05 (2024): Jurnal Pengabdian West Science
Publisher : Westscience Press

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58812/jpws.v3i05.1138

Abstract

Bulan Ramadhan merupakan bulan suci umat Islam dimana banyak pahala yang dilipatgandakan jika kita berbagi kepada sesama yang membutuhkan kepedulian dan perhatian. Mahasiswa yang tergabung dalam HIMPRO TM FT UNNES mengadakan Ramadhanan Bareng Teknik Mesin (RBTM) 2024. Tujuan kegiatan pengabdian ini adalah untuk mengisi kegiatan mahasiswa Departemen Teknik Mesin, Fakultas Teknik, Universitas Negeri Semarang di bulan Ramadhan. Tahapan pengabdian yang dilakukan yaitu: (1) Persiapan, (2) Pelaksanaan, (3) Evaluasi, dan (4) Pelaporan. Hasil kegiatan pengabdian menunjukan bahwa: (1) jumlah anak-anak yang mengikuti kegiatan berjumlah orang, (2) 100% anak-anak Panti Asuhan Al Qodri dan penerima takjil di Simpang 7 UNNES merasa kegiatan ini bermanfaat. Saran untuk RBTM kedepannya yaitu lebih banyak mencari sponsor, cek berkala seluruh peralatan yang akan digunakan di hari H, lebih disiapin lagi buat acara hari H, cari tempat konsumsi yang tertutup/ kondusif, lebih perhatikan lagi dalam pemasangan backdrop.
Servis Jitu dan Hemat (JIMAT) Sepeda Motor Himpro Teknik Mesin FT UNNES 2024 Iskandar, Ranu; Naryanto, Rizqi Fitri; Widodo, Rahmat Doni; Kriswanto; Misbah, Abdillah Habib Al; Hafizh, Muh. Abiyyu; Laksono, Bakti; Fitri, Devi Aisa; Burhanudin, Muh. Winarno; Qothrunnada, Nadhiva; Nashiruddin, Ja'far Faris; Setiawan, Muh. Rizki Ivan; Pratama, Maharudin Wira; Alwidad, R. M. Rois; Prasetyo, Dzaky Riyavika; Putra, Andra Andika; Prananda, Muh. Ridwan; Priambudi, Ajhi Bangun; Refiana, Dian; Segoro, Satria Bayu
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.
Characteristics of SKD 61 and Aluminium 7075 Tools in High Density Polyethylene (HDPE) and Polypropylene (PP) Welding in Terms of Tensile Strength and Bending strength Alkafi, Abu Faqih; Darsono, Febri Budi; Kriswanto; Rochim, Mohammad Nur
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 2 (2025): December 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i2.15550

Abstract

Effective welding procedures are necessary to preserve structural integrity due to the growing usage of lightweight polymers in industry, such as polypropylene (PP) and high density polyethylene (HDPE). This study sought to determine how the tool materials, SKD 61 and Aluminum 7075, affected the tensile and bending strength of HDPE and PP friction stir welded (FSW) joints. A quantitative comparative design was used in the experiment, and the FSW tool was modified milling equipment with screw cylindrical pin tools. Temperature control was observed using a thermogun and no preheating was used to guarantee process stability. Based on the results, SKD 61 generated higher weld quality, which was characterized by fewer flaws, regulated heat input, and more consistent material flow. SKD 61 outperformed than aluminium 7075, which had an average tensile strength of 11.09 MPa and bending strength of 19.11 MPa, while aluminium 7075 had an average tensile strength of 7.8 MPa and bending strengths of 16.28 MPa. This discrepancy is explained by SKD 61's higher heat conductivity and stability, whereas tool geometry had little effect because the screw cylindrical pin profile was the same. SKD 61 is more suited for FSW of HDPE-PP dissimilar joints, according to the study's findings, offering higher joint quality and stronger mechanical performance.
Characteristics of Tool Tilt Variation in Friction Stir Welding HDPE with Tool Made of 7075 Aluminum on Tensile and Bending Strengths Nur Rochim, Mohammad; Darsono, Febri Budi; Kriswanto; Alkafi, Abu Faqih
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 2 (2025): December 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i2.15551

Abstract

High-Density Polyethylene's (HDPE) potential is highlighted by the growing need for lightweight, high-strength materials in the automotive and aerospace industries. Friction Stir Welding (FSW) provides a solid-state joining method with low thermal degradation for producing high-quality joints in this thermoplastic material. With an emphasis on tensile and bending strength, this study attempts to examine how tool tilt angle variation affects HDPE joint quality. Three different tilt angle variations—0°, 1°, and 1.5°—were used in the experiment, which was carried out using an aluminum 7075 tool that was shaped like a grooved conical pin. A modified milling machine was used for welding, and ASTM D638 for tensile and ASTM D790 for bending mechanical tests were conducted. The findings show that the tilt angle has a major impact on the quality of the weld. With a tensile strength of 13 MPa (68.4% of raw HDPE), a bending strength of 16.5 MPa (70.5%), and a dense stir zone with few voids, the best weld was produced at a 1.5° angle. On the other hand, the weakest joint with obvious structural flaws was produced by the 0° angle. Overall, it is determined that the best tilt angle for improving the mechanical and aesthetic performance of FSW joints in HDPE is 1.5°.
Characteristics of Profile Pin Variation in HDPE Friction Stir Welding to Mechanical Properties of Materials Agus Wahyu Setiawan; Budi Darsono, Febri; Kriswanto; Ramadhani, Riski
JOURNAL OF MECHANICAL ENGINEERING MANUFACTURES MATERIALS AND ENERGY Vol. 9 No. 2 (2025): December 2025 Edition
Publisher : Universitas Medan Area

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31289/jmemme.v9i2.15638

Abstract

Friction Stir Welding (FSW) is one of the Solid-State Welding processes, which joins materials below their melting point by continuously rubbing two workpieces together to generate heat. The FSW process heavily relies on the use of pin profiles, which play a crucial role in forming the weld joint, as they directly affect material flow in the weld zone and heat distribution during the welding process. This research aims to evaluate the mechanical properties of FSW joints made using different pin profile variations, in order to achieve high-quality welds. The study applies a descriptive statistical analysis approach, utilizing tensile testing, flexural testing, hardness testing, and macro photography. The material used in this research is High-Density Polyethylene (HDPE), with three types of pin profiles: triangular, threaded cylindrical, and grooved cylindrical. The welding parameters are kept constant: feed rate of 25 mm/min, spindle speed of 930 RPM, plunge depth of 3.84 mm, and tilt angle of 0°. The results show that the threaded pin profile produced the highest average values: hardness of 59.5 SHD, tensile strength of 11.5 MPa, and flexural strength of 22.4 MPa. In contrast, the grooved pin profile showed the lowest average values: hardness of 57.83 SHD, tensile strength of 4.99 MPa, and flexural strength of 4.22 MPa. The mechanical strength test results were influenced by weld defects observed through macro images. These weld defects significantly impacted the mechanical properties and demonstrated that pin profile geometry plays a vital role in heat generation through friction and in controlling the material flow dynamics, which directly determine the structural integrity and mechanical performance of the weld joint.
Application of MULTIMEDIA Powerpoint Assisted Learning to Improve Learning Outcomes of Knowledge of the function of Fracture Machine Parts pras, Prastiyo; Muhammad Khumaedi; Kriswanto
Jurnal Pendidikan Teknik Mesin Vol. 25 No. 02 (2025): December 2025 (on going)
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v25i02.28845

Abstract

The purpose of the research conducted to determine the effect of using PowerPoint multimedia on improving student learning outcomes in the subject of milling machine parts at SMK IPT Karangpanas. The background of this research is based on poor student learning outcomes, which are below the Graduation Threshold Value (KKM). Before conducting research, the feasibility of media and material was tested by experts with a percentage of 83% so that the material and media were suitable for use. The method used is quantitative experimental research with a two-group pre-test and post-test experimental model. Samples from two XI classes were taken randomly, with one experimental class and the other as a control class. Data were collected through questions in the form of pretest and posttest, and analysed using normality test, paired sample t-test, independent sample t-test, and N-Gain analysis. Results showed a significant improvement in learning outcomes in the experimental class compared to the control class, with a higher mean posttest score. The independent sample t-test showed significance <0.001, and the mean N-Gain of 0.4713 was classified as moderate. Thus, the use of PowerPoint multimedia was proven effective in improving students' learning outcomes.
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.
Co-Authors Abdissalam, Muhammad Wifaqurrokhman Abdurahman Abdurrahman Agus Wahyu Setiawan Alfarizy, Ibnu Alkafi, Abu Faqih Almay, Hans Nashirudin Alwidad, R. M. Rois Aminuddin Amirudin, Eka Angraini Ari Dwi Nur Indriawan Musyono Atta Putra Harjanto Budi Darsono, Febri Burhanudin, Muh. Winarno Cahyanto, Septian Eko Casminto Darsono, Febri Budi Dg. Mangemba Dharma, Mahardika Setya ekawati Enita, Sarai Farras, Herdin Bergas Firmansyah, Muhammad Raihan Fitri, Devi Aisa FITRIYAH Hafizh, Muh. Abiyyu Haikal Hamdi, Ilham Falah Harahap, M. Abiyyu Hafizh Hendrix Noviyanto Firmansyah Heri Yudiono Imam Fitrah Hadi Indo Iya Mappaita Irmawati Iskandar, Ranu Jesika Selin Khoirudin Fathoni Khoirul Huda Laksono, Bakti Mahasurya, Muhammad Saddam Malisi, Muhammad Sibro Masruhan, Fahmi Irsad Maulana, Muhammad Akmal Metungku, Fany Misbah, Abdillah Habib Al Muhamad Reza Wahyu Prasetyo Muhammad Khumaedi Muhammad Nur Faizin Nashiruddin, Ja'far Faris Natasya, Alya Widya Niko Ario Septian Nugroho Fajar Susanto Nugroho, Cahyo Adin Nur Rochim, Mohammad Nurarifah Nurarifah Panjaitan, Eliza Laura Prananda, Muh. Ridwan pras, Prastiyo Prasetyo, Dzaky Riyavika Pratama, Maharudin Wira Priambudi, Ajhi Bangun Priyanto, Kaleb Putra, Andra Andika Qothrunnada, Nadhiva R. Ambar Kuntoro Mursit Gendroyono R. Imanu Danar Herunandi Ra'bung, Alfrida Semuel Ramadhani, Riski Refiana, Dian Rifaldi Rizqi Fitri Naryanto Rochim, Mohammad Nur Rochim, Muhammad Nur Ruben Bayu Kristiawan Rusiyanto Safriana, Eni Saputra, Muhammad Dwi Saputra, Muhammad Rizal Segoro, Satria Bayu Setiawan, Muh. Rizki Ivan Sri Dewi Rahmawati Stevani Susilia Sudjana, Immanuel Eltian Suhartian, Muhammad Ryo Sunyoto Tasrif Shandy Tegar Oki Prasdika Ulhakim, Muhammad Zia Vidya Urbaningrum Urbaningrum Wirawan Sumbodo Yelsi Putriana Lama