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All Journal INDONESIAN JOURNAL OF APPLIED PHYSICS JURNAL CRANKSHAFT Makara Journal of Technology kawanad jes
M. Nizar Machmud
Universitas Syiah Kuala
Aerospace Engineering Astronomy Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Materials Science & Nanotechnology Mechanical Engineering Physics

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Program Pendampingan Penguasaan Cetak Massal untuk Pengembangan Industri Kreatif Rencong Souvenir Husni, Husni; Putra, T. Edisah; Husaini; Arhami; Masri, Masri; Machmud, M. Nizar; M Nural Fajri
Kawanad : Jurnal Pengabdian kepada Masyarakat Vol. 4 No. 1 (2025): March
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/kjpkm.v4i1.297

Abstract

This community service program aims to increase the production capacity of the creative rencong souvenir industry through mentoring in mastering mass printing technology. The rencong, as a traditional Acehnese weapon, has been transformed into a souvenir product with significant economic potential, yet it remains constrained by the limitations of conventional production techniques. Through this program, craftsmen and small and medium enterprises (SMEs) in the rencong souvenir sector receive intensive training and mentoring on efficient and high-quality mass printing techniques. The methods employed include technology transfer, hands-on training, and continuous monitoring to ensure program sustainability. The expected outcomes are improved productivity, production efficiency, and product quality standardization, ultimately enhancing the competitiveness of the creative rencong souvenir industry in both local and national markets. This program is also designed to positively impact local economic empowerment while preserving Aceh's cultural heritage through innovative creative industry products.
Limbah Tempurung Kelapa diuji Guna Menjadi Bahan Bakar Alternatif Arhami; Machmud, M. Nizar; Ali, Masri
Journal of Engineering and Science Vol. 1 No. 1 (2022): January-June 2022
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v1i1.2

Abstract

Pyrolysis is a thermo-chemical which decomposition of organic material through heating process with absent or little oxygen (anaerobic). The purposes of study are design pyrolyzer of coconut shell being to alternative fuels, knowing much of oil from pyrolysis process with method of counter flow and parallel flow, and knowing heat energy or caloric energy which was produced from pyrolysis process with method of counter flow and parallel flow in condenser. The research with through experiments the pyrolyzer which includes reactor, distribution pipe, and condenser. Research methods are the experiment of pyrolysis process at temperature 35oC during 60 minutes with condensation method, counter flow and parallel flow. Results of experiments are data of gas fuels mass obtained 42 grams which used pyrolysis process of coconut shell in the amount of 1000 gr, until produces pyrolysis oil as 198 grams (counter flow) and 196 grams (parallel flow). Counter flow method can absorb a heat as 1304,762 kJ and heat loss through gasses as 462,842 kJ, even though parallel flow no more than absorb as 1200,83 kJ and heat loss through gasses as 545,271 kJ.
Bahan Bakar Minyak Dari Berbagai Metode Konversi Sampah Plastik Ibrahim, Masri; Machmud, M. Nizar; Ali, Masri
Journal of Engineering and Science Vol. 1 No. 1 (2022): January-June 2022
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v1i1.3

Abstract

The use of plastic and goods made of plastic have been rising in day to day. Increasing use of plastics is a consequence of the development of technology, industry and population. On one hand, the invention of plastic has a remarkable positive impact, because it has many advantages compared to other materials. But on the other hand, the plastic waste has negative impact that too worried, so its solutions need to be looked for. One of the alternative handling of plastic waste that currently extensively researched and developed is converting plastic waste into fuel. Converting plastic waste into fuel oil can be done with cracking process. There are three kinds of process that is hydro cracking, thermal cracking and catalytic cracking. Fuel oil produced from the cracking of plastic waste depending on the plastic type, cracking process used, catalyst type, pyrolisis temperature and condenser temperature.
Eksperimen Pengaruh Kecepatan Pada Diameter Nozzle 2,5 mm dalam Proses Laser Cutting Masri; Suhaeri; Machmud, M. Nizar; Zainuddin; Saifuddin; Azhar
Journal of Engineering and Science Vol. 2 No. 2 (2023): July-December 2023
Publisher : Yayasan Kawanad

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56347/jes.v2i2.168

Abstract

This experimental study examines the impact of speed variations on the 2.5 mm nozzle diameter in low-carbon steel laser cutting. The primary objective is to optimize the roundness of the cut by considering cutting speed factors. Through a series of experiments conducted on low-carbon steel plates measuring 200 mm x 200 mm, utilizing a 2.5 mm nozzle diameter with speed variations of 2, 3, and 4 m/minute, the research measures roundness quality using a digital caliper. Results indicate that cutting speed influences roundness quality, with the lowest deviation observed at a speed of 2 m/minute and the highest at 3 m/minute. The study also highlights that increased cutting speed and the use of a larger nozzle require higher gas pressure.
STUDI KONVERGENSI MESH PADA RESPONS HANCUR NUMERIK STRUKTUR SANDWICH HONEYCOMB Kamil, Syahiir; Machmud, M. Nizar; Hasanuddin, Iskandar; Sabri, Faris Ahmad Mizanus; Adlie, Taufan Arif; Arif, Zainal
JURNAL CRANKSHAFT Vol. 9 No. 1 (2026): Jurnal Crankshaft Vol. 9 No. 1 (2026)
Publisher : Badan Penerbit Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/cra.v9i1.16831

Abstract

In this research, finite element methods are utilized to investigate the mechanical behavior of aluminium honeycomb sandwich structures under out-of-plane compression. The structures were virtually compressed from the initial elastic regime until the plateau phase using explicit non-linear analysis modelling approaches. A mesh convergence study is conducted to ensure the accuracy and reliability of the simulation results, aiming to determine the optimal mesh size that balances precision with computational efficiency. An analytical equation for calculating the plateau force, or average crush load, along with experimental data from the study by Mertani, is used to validate the numerical results. The study concludes that a mesh size of 0.5 mm offers an ideal balance between accuracy and computational cost, yielding an error of 3.1%.
Magnetic behavior identification of high-purity hematite (Fe2O3) extracted from iron ore by co-precipitation method Fauzi, Fauzi; Rahwanto, Adi; Malahayati, Malahayati; Machmud, M. Nizar; Jalil, Zulkarnain
INDONESIAN JOURNAL OF APPLIED PHYSICS Vol 15, No 2 (2025): October
Publisher : Department of Physics, Sebelas Maret University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/ijap.v15i2.107933

Abstract

Magnetic mineral identification was successfully carried out on the iron ore from Manggamat in South Aceh Regency, Indonesia. This initial study was conducted in an attempt to increase the added value of local minerals. This study was performed by using co-precipitation method combined with mechanical milling and analyzed using X-ray diffraction and fluorescence (XRD, XRF) and the magnetic properties evaluated by Permagraph. These investigations indicate that the dominant phase in the Manggamat iron ore is hematite (Fe2O3), showed a content of 85.31%, followed by SiO2 compounds (11.01%), and the lowest concentration was SnO2 (0.02 %). Furthermore, observation of the magnetic properties showed that the magnetic saturation (Ms) of 0.1 Tesla, then residual magnetization or remanent (Br) of  0.017 Tesla, and a reverse magnetic field or coercivity (Hc) of 12.39 kA/m. As the milling time increased, the magnetic saturation and remanent field decreased, whereas the coercive field increased. This characteristic is known as the superparamagnetic behavior which widely used in biomedical application.
Co-Authors Adi Rahwanto Akhyar Ali, Masri ALI, NURDIN ARHAMI Arif, Zainal Azhar Devi Sara, Ira Fauzi Fauzi Hasanuddin, Iskandar Husaini Husni Husni Husni IRMA DEWI ISKANDAR Kamil, Syahiir M Nural Fajri Malahayati Malahayati Masri Masri Ibrahim Masri Masri Mochammad Afifuddin Nasution, Elvy Sahnur Nurul Malahayati Nurwijayanti Putra, T. Edisah Sabri, Faris Ahmad Mizanus Saifuddin Saiful Suhaeri Sulaiman Thalib Suriadi Syahrizal Zainuddin Zulkarnain Jalil