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All Journal Dinamika : Jurnal Teknik Mesin Machine : Jurnal Teknik Mesin Journal of Science and Engineering ICETIA Patria Artha Technological Journal To Maega: Jurnal Pengabdian Masyarakat Scientific Journal of Mechanical Engineering Kinematika Jurnal Mesin Nusantara Patria Artha Journal of Community Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Jurnal Inovasi Teknologi Terapan Sainstech Nusantara
Kifli Umar
Department Mechanical Engineering, Faculty of Engineering, Khairun University
Aerospace Engineering Agriculture, Biological Sciences & Forestry Arts Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Public Health Social Sciences Transportation Other

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Perlakuan Serat Sabut Kelapa Dengan Asap Cair Sebagai Bahan Penguat Komposit Penyerap Suara Mukhlis, Mukhlis; Seng, Ahmad; Tjiroso, Bambang; Muzni Harbelubun, Mohammad; Umar, Kifli
Jurnal Inovasi Teknologi Terapan Vol. 3 No. 1 (2025): Jurnal Inovasi Teknologi Terapan
Publisher : Politeknik Manufaktur Negeri Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33504/jitt.v3i1.238

Abstract

This study aims to identify the potential use of coconut fiber (SSK) as an acoustic material composite that supports the development of environmentally friendly local material-based room partition infrastructure, so the study focuses on analyzing the acoustic properties of SSK composites. This study uses experiments with variations, namely fiber treatment with liquid smoke immersion for 1, 2, and 3 hours. Furthermore, it is heated at a temperature of 40ºC for 30 minutes. Furthermore, SSK-reinforced composite specimens are made by preparing resin and fibers with a fiber length of 10 mm, 70% SSK composition, and molded, then composite acoustic specimens are made. The results of this study obtained environmentally friendly composite materials for soundproof room partitions, where the acoustic properties of SSK-reinforced composites show that the treatment can increase the sound absorption coefficient. So, it can be concluded that SSK-reinforced composite acoustic materials can be used as environmentally friendly room partition materials.
Effect of Liquid Smoke Treatment on Banana Stem Fibers as Composite Reinforcement Muslimin, Mukhlis; Seng, Ahmad; Latif, Lita Asyriati; Harbelubun, Mohammad Muzni; Umar, Kifli; Ramli, Eat
SAINSTECH NUSANTARA Vol. 2 No. 1 (2025): February 2025
Publisher : Nusantara Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.71225/jstn.v2i1.85

Abstract

This study aims to identify the potential utilization of banana stem fiber (BSF) as a locally sourced composite material to support building infrastructure in North Maluku. The research focuses on analyzing the tensile and impact properties of the composite. An experimental method was used, incorporating different treatment durations for the fibers by immersing them in liquid smoke for 1, 2, and 3 hours. The treated fibers were then heated at 40°C for 30 minutes. The next step involved fabricating BSF-reinforced composite specimens by preparing the resin and fibers, with a fiber length of 10 mm and a composition of 30% BSF and 70% resin. Tensile and impact tests were conducted to evaluate the mechanical properties of the composites. The results showed that the tensile strength of the P3J composite increased to 88.351 MPa, representing a 3.79% improvement compared to the untreated composite (TP). Meanwhile, the impact strength showed the highest increase after 1 hour of immersion, reaching 10.911 KJ/m, which is 25.45% higher than TP. These findings indicate that liquid smoke treatment enhances the tensile and impact properties of the composite.
PENGARUH PERLAKUAN SERAT SABUK KELAPA (SSK)TERHADAP MORFOLOGI DAN SIFAT AKUSTIK KOMPOSIT BERPENGUAT SSK Muslimin, Mukhlis; Umar, Kifli; Seng, Ahmad; Daud, Kadri; LM, Samsul Bahri
Machine : Jurnal Teknik Mesin Vol 9 No 2 (2023): Machine : Jurnal Teknik Mesin
Publisher : Jurusan Teknik Mesin Fakultas Sains dan Teknik Universitas Bangka Belitung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33019/jm.v9i2.4466

Abstract

The research aims to determine the effect of SSK treatment with liquid smoke on the morphology and acoustic properties of SSK reinforced composites. The research method is an experimental method with variations in fiber treatment by soaking in liquid smoke for 1, 2 and 3 hours. Next, after soaking the fiber, it is heated in an oven at 40ºC for 30 minutes, then the resulting fiber morphology is observed using a JEOL JCM 6000 SEM tool then SSK reinforced composites are made for acoustic testing, specimen making is done by preparing resin and long fibers. 1 cm fiber, 60% resin composition and 40% SBP, after drying a composite acoustic test specimen was made. The results show that SSK treatment with liquid smoke increases the fiber morphology to become rough and porous, so that the SSK reinforced composite has a sound absorption coefficient value for the SSK TP composite of 0.1175 db, while the SSK P1J, P2J, and P3J composites have a sound absorption coefficient value of 0.1304, 0.1199, and 0.1181 db. , this shows that the SSK P1J composite is better in sound absorption by 10.92% when compared with SSK TP, so it can be recommended as an environmentally friendly acoustic material.
Pengaruh Perlakuan Sabut Kelapa dengan Asap Cair dan NaOH Terhadap Kuat Tarik dan Impak Komposit Muslimin, Mukhlis; Umar, Kifli; Usman, Abdullah Usman
Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Vol. 6 No. 1 (2022): PROSIDING SEMINAR NASIONAL INOVASI TEKNOLOGI TAHUN 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/inotek.v6i1.2476

Abstract

Tujuan dari penelitian ini adalah untuk membandingkan kekuatan serat sabut kelapa tanpa perlakuan, perlakuan NaOH, dan perlakuan asap cair terhadap kekuatan tarik dan kekuatan impak komposit berpenguat serat sabuk kelapa. Metode yang digunakan adalah preparasi serat, tanpa perlakuan (WT), serat dengan perlakuan asap cair (TLS), dan perlakuan NaOH (TNaOH). Setelah itu dilakukan uji tarik dan uji impak komposit dengan bahan pengisi sabut kelapa untuk tiga variasi (WT), TLS, dan TNaOH. Hasil penelitian menunjukkan bahwa dari ketiga variasi diperoleh kekuatan rata-rata serat WT sebesar 31.700 MPa, serat TNaOH sebesar 48.125 MPa, dan serat dengan TLS sebesar 33.700 MPa. Sedangkan nilai rata-rata uji impak komposit serat WT 0,204 KJ/m², TNaOH 0,236 KJ/m², dan TLS meningkat 0,432 KJ/m². Hasil ini menunjukkan bahwa uji tarik komposit TNaOH memiliki kekuatan rata-rata yang lebih baik daripada WT dan TLS, sedangkan uji impak menunjukkan bahwa TLS memiliki kekuatan impak rata-rata yang lebih baik dari perlakuan TNaOH dan WT.
Analisa Pengaruh Jarak Kampuh dan Arus Pengelasan Terhadap Ketangguhan Baja WF Karim, Ivan Junaidy A; Seng, Ahmad; Umar, Kifli; Adnan, Muslim
Prosiding SEMNAS INOTEK (Seminar Nasional Inovasi Teknologi) Vol. 6 No. 3 (2022): PROSIDING SEMINAR NASIONAL INOVASI TEKNOLOGI TAHUN 2022
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/inotek.v6i3.2647

Abstract

Penggunaan baja WF (Wide flange) sangat banyak di gunakan pada konstruksi jembatan bangunan gedung dan konstruksi lainnya. Proses pengelasan sambungan plat baja karbon rendah dengan menggunakan metode pengelasan SMAW dengan kampuh V serta variasi arus dan jarak kampuh sering untuk mendapatkan ketangguhan. Penelitian ini bertujuan untuk mengetahui pengaruh jarak kampuh dan arus listrik terhadap kekuatan baja kontruksi WF (Wide Flange) pada las SMAW menggunakan kampuh V dengan jarak kampuh 2 mm, 3 mm, dan 4 mm, dengan elektroda E6013 berdiameter 2,6 mm pada polaritas DC+ dengan arus pengelasan 60 ampere, 75 ampere, dan 90 ampere, proses pembuatan spesimen uji menggunaka standar ASTM A370. Hasil pengujian impack metode charpy tersebut menunjukkan bahwa nilai ketangguhan tertinggi adalah kelompok jarak kampuh las 3 mm sebesar 1,262 KJ/m2, 1,226 KJ/m2, dan 1,058 KJ/m2 di ikuti dengan kelompok jarak kampuh 4 mm sebesar 1,147 KJ/m2, 1,133 KJ/m2, dan 1,102 KJ/m2, dan kelompok jarak kampuh 2 mm memiliki nilai ketangguhan rendah sebesar 1,009 KJ/m2, 1,000 KJ/m2, dan 0,931 KJ/m2. Melalui patahan dengan diberikan variasi jarak kampuh las dan arus listrik. Jenis perpatahan yang terjadi pada sambungan las dengan jarak kampuh 2 mm, 3 mm, dan 4 mm dengan arus listrik 60 ampere, 75 ampere, dan 90 ampere adalah patah getas.
Workshop Videography Dan Photography Bagi Para Pegiat Wisata Dalam Mempromosikan Potensi Wisata Di Kepulauan Kayoa, Halmahera Sandi Rais; Kifli Umar; Syamsul Bahri LM, Kadri Daud; Kadri Daud
Patria Artha Journal of Community (PKM) Vol. 3 No. 2 (2023): Patria Artha Journal of Community
Publisher : Universitas Patria Artha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33857/pajoco.v3i2.782

Abstract

Pelaksanaan program pengabdian kepada masyarakat ini bertujuan menambah pengetahuan serta meningkatkan soft skill generasi muda dalam bidang videografi dan fotografi, menciptakan Sumber Daya Manusia (SDM) yang ahli di bidang digital dan menciptakan generasi muda yang kreatif, inovatif, dan produktif untuk mempromosikan keindahan alam di Pulau Kayoa sebagai bentuk promosi pariwisata. Tahapan Pelaksanaan dilakukan dalam 2 tahap yaitu ; Pelaksanaan Sosialisasi dan Pelatihan yang dilaksanakan pada pagi sampai siang hari di SMK Modayama yang di hadiri oleh kurang lebih 30 Siswa dan pelaksanaan pembukaan dan ceremony yang di hadii oleh Kepala Desa Modayama dan Sekretaris Desa Modaya serta para masyarakat di Desa Modayama dilaksanakan pada malam hari pada tanggal 29 Juli 2023. Kegiatan pelatihan dilakukan secara bersamaa yang di hadiri oleh 30 orang pemuda Desa Modayama. Beberapa materi pelatihan yang dilakukan antara lain; Teknik pengambilan gambar (Foto) menggunakan SmartPhone, teknik pengambilan video menggunakan Smarphone, teknik Editing Photo Menggunakan Lightroom Mobile dan SnapSheet dan teknik editing video menggunakan VN dan CAPCUT.Kata kunci: Parwisata, Photography, Video Graphy, Workshop
INVESTIGATION OF MECHANICAL PROPERTIES OF SLA 3D PRINTED RESIN IN BENDING MOMENT ANALYSIS USING FINITE ELEMENT METHOD Lita Asyriati Latif; Sukiman B; Mohammad Muzni Harbelubun; Mukhlis M; Kifli Umar; Kholqillah Ardhian Ilman
Scientific Journal of Mechanical Engineering Kinematika Vol 11 No 2 (2026): SJME Kinematika December 2026
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v11i2.876

Abstract

This study investigates the mechanical properties of Stereolithography (SLA) 3D printed resin in bending moment analysis using the Finite Element Method (FEM). With the growing adoption of SLA in healthcare and manufacturing, understanding mechanical performance of SLA-printed components, particularly in bending, is crucial. The research evaluates influence of printing parameters and material composition on flexural strength and flexibility of dental resin samples. It examines internal geometries such as triangle and honeycomb structures and varying thickness-to-height ratios affecting bending strength. Bending tests followed ASTM D790 standards and results were compared with FEM simulations to validate material behavior. Simulations were performed using Abaqus Student 2025 software under conditions matching experimental tests. Results show geometry and thickness-to-height ratio significantly affect bending strength, with triangle geometry outperforming honeycomb. Samples with triangle geometry and 4.5 mm ratio achieved highest bending strength of 62.743 MPa, while honeycomb 9 mm reached 55.943 MPa. Post-processing such as UV curing improves mechanical properties of resin. This study provides insights for SLA 3D printing applications in dental prosthetics and offers a framework to optimize printing parameters for performance. It contributes to the development of predictive modeling combining FEM and experimental validation for improved design of additively manufactured resin components in biomedical applications. Future work will explore broader geometries, different resin formulations, and more complex loading conditions to enhance accuracy and reliability of simulation-based design methods for SLA printed structures in engineering and medical fields as well as improve clinical applicability in dental prosthetic fabrication processes and patient outcomes overall performance.
Co-Authors Abdul Karim, Ivan Junaidy Adnan, Muslim Ahmad Seng Ahmad Seng Ardians Susanto Mokar Ari Setia Pratama B, Sukiman Bambang Tjiroso Bambang Tjiroso, Bambang Daud, Kadri Fitra Putra Siko Herbelubun, Muh Muzni Ishak Usman Ivan Junaidi Abdul Karim Ivan Junaidy Abd Karim Karim, Ivan Junaidy A Kholqillah Ardhian Ilman Lita Asyriati Latif LM, Samsul Bahri Mukhlis Muslimin Rahmat Rahmat Rais, Sandi Rais, Sandi Ramli, Eat Sahdar Rajak Saiful Asri Tita Nurhalisa Potale Tri Suyono Usman, Abdullah Usman Witono Hardi Zulfikram, Zulfikram