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All Journal SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Manufaktur: Publikasi Sub Rumpun Ilmu Keteknikan Industri Jurnal Pendidikan Teknik Mesin Jurnal Pendidikan Teknik Mesin
Khoirul Huda
Universitas Negeri Semarang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Engineering Environmental Science Health Professions Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mechanical Engineering Medicine & Pharmacology Nursing Public Health Social Sciences Other

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DESIGN OF ELECTRONIC TEACHING MATERIALS BASED ON TEAM-BASED PROJECT LEARNING CONTAINING MULTIMEDIA Sudiyono; Rusiyanto; Ari Dwi Nur Indriawan Musyono; Febrian Arif Budiman; Angga Septiyanto; Rizki Setiadi; Khoirul Huda
Jurnal Pendidikan Teknik Mesin Vol. 10 No. 2 (2023): 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.v10i2.10

Abstract

Penelitian ini memiliki tujuan untuk mengembangkan bahan ajar elektronik yang berbasis Team Based Project Learning bermuatan multimedia yang layak dan efektif digunakan dalam pembelajaran. Aplikasi yang digunakan untuk mengembangkan bahan ajar elektronik tersebut adalah Flipbuilder. Penelitian ini merupakan penelitian pengembangan dengan metode ADDIE (Analysis, Design, Development, Implementation, dan Evaluation). Setelah bahan ajar elektronik tersebut disusun, selanjutnya dilakukan uji kelayakan dengan validasi oleh ahli materi dan ahli media, kemudian dilanjutkan dengan uji coba terbatas terhadap mahasiswa. Setelah dinilai layak untuk digunakan dalam pembelajaran, selanjutnya akan diukur efektifitas penggunaannya melalui tes yang dilakukan terhadap mahasiswa yang menerima atau menggunakan bahan ajar elektronik hasil pengembangan. Hasil penelitian menunjukkan bahwa pengembangan bahan ajar elektronik berbasis teambased project bermuatan multimedia pada kompetensi membubut ulir telah dilaksanakan dengan baik. Hasil revisi dari para ahli telah diaplikasikan ke dalam bahan ajar elektronik yang dibuat sehingga dapat digunakan dengan baik oleh mahasiswa. Selain itu bahan ajar elektronik juga terbukti sangat efektif untuk digunakan dalam pembelajaran. Hal ini terlihat dari hasil perhitungan N-gain yang memperoleh nilai 0,72 atau berada pada kriteria tinggi/ sangat efektif.
Be buddy not a bully: Peningkatan pengetahuan non violence siswa SDN Meles dalam pencapaian SDG 4 Ranu Iskandar; Khoirul Huda; Putri Khoirin Nashiroh; Wahyu Ady Priyo Kuncahyo; Syaeful Adji Prasetyo; Muhammad Dwi Yulianto; Restu Kurnia Ramadhani; Agustin Nurhayatun
SELAPARANG: Jurnal Pengabdian Masyarakat Berkemajuan Vol 9, No 4 (2025): Juli
Publisher : Universitas Muhammadiyah Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31764/jpmb.v9i4.31608

Abstract

Abstrak Tingkat violence (kekerasan) di lingkungan pendidikan di Indonesia semakin memprihatinkan. Salah satu sekolah yang pro non violence (anti kekerasan) adalah SDN Meles. Tujuan pengabdian ini yaitu untuk meningkatkan pengetahuan non violence siswa SDN Meles. Metode pengabdian ini yaitu persiapan (identifikasi isu, analisis isu mitra, solusi yang akan ditawarkan, komunikasi dengan mitra sebelum pelaksanaan, serta persiapan alat dan bahan), pelaksanaan (metode ceramah, tanya jawab demonstrasi, dan praktik mandiri), dan evaluasi pengabdian (pretest dan posttest). Kegiatan pengabdian dilaksanakan pada tanggal 14 Mei 2025 di kelas IV SDN Meles dengan jumlah siswa 18 orang. Hasil penilaian peningktan menunjukkan bahwa pengetahuan siswa meningkat dengan adanya pelatihan dengan urutan pengetahuan anti perundungan, kekerasan seksual, diskriminasi, kekerasan fisik, kekerasan psikis. Kata kunci: non violence; pengetahuan; SDG 4; SDN Meles; siswa Abstract The level of violence in educational environments in Indonesia is increasingly concerning. One of the schools that is pro-non-violence is SDN Meles. This community service aims to improve the knowledge of SDN Meles students about non-violence. The methods of this community service are preparation (identification of issues, analysis of partner issues, solutions to be offered, communication with partners before implementation, and preparation of tools and materials), implementation (lecture method, Q&A demonstration, and independent practice), and community service evaluation (pretest and posttest). The community service activity was carried out on May 14, 2025, in grade 4th of SDN Meles with 18 students. The results of the improvement assessment showed that students' knowledge increased with the training in the order of anti-bullying knowledge, sexual violence, discrimination, physical violence, and psychological violence. Keywords: non-violence; knowledge; SDG 4; SDN Meles ; students
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.
FIXTURE DIAMETER INFLUENCE ON BIOMECHANICAL PERFORMANCE OF DENTAL IMPLANT ABUTMENT AND SCREW: A 3D FEA STUDY Rachael Andika; Kriswanto; Khoirul Huda; Rahmat Doni Widodo; J. Jamari; Athanasius Priharyoto Bayuseno
Jurnal Pendidikan Teknik Mesin Vol. 26 No. 01 (2026): June 2026 "Special issues for finite element analysis"
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v26i01.29583

Abstract

Dental implant stability hinges on fixture design, particularly diameter, influencing biomechanical performance. This study evaluates the impact of fixture diameter on von Mises stress, strain, and factor of safety in the abutment and screw of posterior dental implants using finite element analysis. A three-dimensional model of a mandibular first molar implant was developed with fixture diameters of 3.75, 4.0, and 5.0 millimeters, using Ti-6Al-4V and static loading simulating maximum voluntary clenching (177.38 N). Results show that the 5.0-millimeter diameter with a wider abutment reduces stress by 23.7 percent in the abutment and 33.9 percent in the screw, strain by 23.7 and 33.1 percent, respectively, and improves factor of safety, compared to 3.75 millimeters. The 5.0-millimeter diameter optimizes biomechanical stability, enhancing long-term implant success in posterior mandibular applications.
COMPARATIVE BIOMECHANICAL ANALYSIS OF POSTERIOR MANDIBULAR PREMOLAR IMPLANTS: EFFECTS OF MATERIAL MODELING, CONTACT CONDITIONS, AND LOADING DIRECTION Dennis Andhara Putra; Kriswanto; Khoirul Huda; Jamari; Athanasius Priharyoto Bayuseno; Dhiaulhaque; Nurul Fatulloh; Mohd Syahmi Jamaludin
Jurnal Pendidikan Teknik Mesin Vol. 26 No. 01 (2026): June 2026 "Special issues for finite element analysis"
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/jptm.v26i01.54363

Abstract

Posterior tooth loss in the mandibular region may reduce masticatory performance and compromise biomechanical stability, thereby requiring predictable and well-designed implant rehabilitation strategies. This study evaluates the mechanical behavior of an implant–bone system by considering variations in bone material representation (isotropic and orthotropic models), implant–bone interface conditions (fully bonded and frictional contact), and loading orientations (axial and oblique) through a validated three-dimensional finite element analysis (3D-FEA) framework. A full factorial design comprising eight simulation configurations was implemented to assess 15 biomechanical output parameters, including von Mises stress, principal strain, and displacement across implant components and surrounding cortical and cancellous bone tissues. The results indicate that the biomechanical response of the system is strongly dependent on both structural components and loading context. The orthotropic bone model tends to increase stress and deformation responses under specific conditions, whereas oblique loading generally produces higher peak mechanical responses than axial loading. Furthermore, the influence of contact conditions is not uniform but varies according to material assumptions and loading direction, suggesting that simplified fully bonded interfaces may not fully capture realistic implant–bone interactions. Overall, the findings highlight the importance of incorporating anisotropic bone behavior, realistic interface modeling, and clinically relevant loading directions to improve the accuracy of stress prediction around dental implants. This study provides numerical evidence that may support improved implant design strategies and enhance the reliability of future finite element–based biomechanical investigations. 
Co-Authors Agustin Nurhayatun Angga Septiyanto Ari Dwi Nur Indriawan Musyono Athanasius Priharyoto Bayuseno Bambang Hari Priyambodo Budiman, Febrian Arif Dennis Andhara Putra Deslana Avinda Krisna Putra Dhiaulhaque Iskandar, Ranu J. Jamari Jamari Kriswanto Kriswanto Kriswanto Martinus Heru Palmiyanto Mohd Syahmi Jamaludin Muhammad Dwi Yulianto Nurul Fatulloh Priyanto, Kaleb Putri Khoirin Nashiroh Rachael Andika Rajendra Vian Pradiksa Restu Kurnia Ramadhani Rizki Setiadi Roy Aries Permana Tarigan Rusiyanto Sudiyono Syaeful Adji Prasetyo Wahyu Ady Priyo Kuncahyo