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Correlation Between Morphological And Fraction Size Of Intermetallic On Fluidity Of Al-11%Si Alloy With Fe Addition Nanda, Is Prima; Suharno, Bambang
Jurnal Teknik Industri Vol 11, No 2 (2010): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Intermetallic morphology influence on the fluidity of alloys Al-11% Si. From the experiments, fluidity in the alloy Al-11% Si were added 0.6, 0.8, and 1.0% Fe, it was found that the higher the Fe content is added to the values decreasing fluidity. On addition of 1% Fe provides the longest phase of intermetallic 50.2 mm, while the shortest intermetallic phase is given by the addition of 0.6% Fe 21.3 mm. In the alloy Al-11% Si with the addition of Fe are generally higher and higher, would produce intermetallic area fraction increased significantly. On addition of 0.6% Fe intermetallic area fraction of 1.01%, while the addition of 0.8% and 1% Fe Fe each area fraction 1.16% and 2.26%

Correlation Between Morphological And Fraction Size Of Intermetallic On Fluidity Of Al-11%Si Alloy With Fe Addition Is Prima Nanda; Bambang Suharno
Jurnal Teknik Industri Vol. 11 No. 2 (2010): Agustus
Publisher : Department Industrial Engineering, University of Muhammadiyah Malang

Intermetallic morphology influence on the fluidity of alloys Al-11% Si. From the experiments, fluidity in the alloy Al-11% Si were added 0.6, 0.8, and 1.0% Fe, it was found that the higher the Fe content is added to the values decreasing fluidity. On addition of 1% Fe provides the longest phase of intermetallic 50.2 mm, while the shortest intermetallic phase is given by the addition of 0.6% Fe 21.3 mm. In the alloy Al-11% Si with the addition of Fe are generally higher and higher, would produce intermetallic area fraction increased significantly. On addition of 0.6% Fe intermetallic area fraction of 1.01%, while the addition of 0.8% and 1% Fe Fe each area fraction 1.16% and 2.26%

Pengaruh unsur Tembaga (Cu) terhadap fluiditas paduan Al-Si 11.8 wt% (ADC 12) dengan metode Vacuum Suction Test Bambang Suharno; Is Prima Nanda; Bustanul Arifin; Demas Seto
Jurnal Energi Dan Manufaktur Vol 1, No.2 Desember 2006
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (21.404 KB)

Al-Si 11.8 wt% alloy which classified to eutectic Al-Si composition usually used to produce a flat casting product with high pressure die casting process. Alloying element become an important things to determine behavior and characteristic of aluminum. Copper added into aluminum to improve strength and hardness, but there has no many studies on the effect of copper on fluidity. This fluidity study is using vacuum suction test method and the microstructure is observed with SEM/EDS. Spectrometer test has been used to find out chemical composition of sample. The result of this study shows that with copper addition from 2.25 wt% to 3.11 wt%, the fluidity value has increased 24.11% on 680oC pouring temperature. On 3.11 wt% copper composition, fluidity value has increased 14.38% from 640oC pouring temperature to 700oC pouring temperature.

Role of Gd addition on machinability of Al-15%Mg2Si in-situ composite during dry turning Nanda, Is Prima; Ghandvar, Hamidreza; Idris, Mohd Hasbullah; Hanif, Auliya; Arafat, Andril
Communications in Science and Technology Vol 5 No 2 (2020)
Publisher : Komunitas Ilmuwan dan Profesional Muslim Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21924/cst.5.2.2020.186

Recently, Al-Mg2Si in-situ composites have achieved considerable attention due to their excellent physical and mechanical properties. In fact, there are some limitations of knowledge regarding the machinability characteristics of these composites - particularly when being inoculated with rare earth additions. This study in turn aimed to investigate the influence of machining parameters as well as Gd addition on the machinability of Al-15%Mg2Si composite. To examine the effect of modifier (1.0 wt. % Gd) and machining parameters (feed rate, cutting speed), microstructural evolution, surface roughness (Ra) and cutting force (Fc) were evaluated during dry turning. The results revealed that Gd addition as modifier element led to better surface roughness and higher cutting force owning to the modification of Mg2Si particle structure as well as the formation of Gd intermetallic compounds.

Synthesis and Characterization of Hydroxyapatite Derived from Pleco Fish (Hypostomus Plecostomus) Bone Waste via Calcination and Ball Milling for Biomedical Applications Sari, Nurfitri Rahmi; Thoriq, Andika; Gunawarman; Nanda, Is Prima; Indra, Ade; Yetri, Yuli; Verdian, Riza
METAL: Jurnal Sistem Mekanik dan Termal Vol. 9 No. 1 (2025): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.9.1.14-20.2025

Hydroxyapatite (HA), a calcium phosphate-based bioceramic, is widely recognized for its excellent biocompatibility and bioactivity, making it suitable for biomedical applications. This study aims to synthesize HA from waste bones of the pleco fish (Hypostomus plecostomus), a natural source of calcium and phosphate that is underutilized in West Sumatera. The synthesis was conducted through calcination at 900 °C followed by mechanical refinement using ball milling for 3, 6, and 9 hours. X-ray diffraction (XRD) analysis confirmed the formation of crystalline HA with dominant peaks at 25.9°; 31.8°; and 32.9°, which remained stable across all milling durations.

Rancang Bangun Model Blended Learning Interaktif Berbasis LMS untuk Pembelajaran Teknik Effendi, Hansi; Nanda, Is Prima
Jurnal Pendidikan Teknik Elektro Vol 6 No 2 (2025): Jurnal Pendidikan Teknik Elektro
Publisher : Jurusan Teknik Elektro Fakultas Teknik Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/jpte.v6i2.536

Learning in the field of Engineering has unique characteristics that differentiate it from general education, particularly in the need to integrate theory with practice, solve project-based problems, and utilize technology to support simulations and experiments. With the advancement of digital learning technologies, Learning Management System (LMS)-based blended learning emerges as a promising approach to facilitate more interactive and flexible learning processes in Engineering education. However, blended learning models specifically designed to address the unique needs of engineering education remain limited. This study aims to design an interactive blended learning model based on LMS tailored to the characteristics of Engineering education. The model was developed using the ADDIE framework (Analysis, Design, Development, Implementation, Evaluation), with an emphasis on utilizing LMS features such as interactive modules, technical simulations, discussion forums, formative assessments, and project-based tasks. The model underwent validation by experts in engineering education and instructional technology to assess its relevance, practicality, and strengths. The findings reveal that the proposed blended learning model effectively meets the needs of Engineering education by integrating theory and practice in a digital environment. Expert validation yielded high scores for relevance and practicality, highlighting the model’s strengths in fostering interactivity while suggesting areas for further improvement. This article contributes by offering a technical guide for designing LMS-based blended learning models, serving as a foundation for more innovative and adaptive engineering education development in the future.

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