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All Journal Jurnal MEKANIKAL MEKTRIK JMPM (Jurnal Material dan Proses Manufaktur) INOVTEK POLBENG Manutech : Jurnal Teknologi Manufaktur Jurnal Teknik Mesin Jurnal Penelitian Enjiniring Fakultas Teknik Unhas Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse) METAL : Jurnal Sistem Mekanik dan Termal PROSIDING SEMINAR NASIONAL FISIKA (E-JOURNAL)
Jon Affi, Jon
Department Of Mechanical Engineering, Andalas University, Limau Manis-Pauh, Padang, 25137, Indonesia
Aerospace Engineering Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics Other

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Addition of Zirconium Oxide for Reduction of Hydroxyapatite Layer Cracks in Ti-6Al-4V ELI Implant Materials for Improved Osseointegration Sanny Ardhy; Gunawarman Gunawarman; Jon Affi; Yuli Yetri
METAL: Jurnal Sistem Mekanik dan Termal Vol 6, No 2 (2022): 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.6.2.95-101.2022

Abstract

The hydroxyapatite (HA) layer on the surface of the implant material tends to crack during the sintering process for layer densification. This causes the process of implant union with bone (osseointegration) does not function perfectly in the human body. This study aims to reduce cracking by increasing the adhesion of the HA layer on the surface of the Ti-6Al-4V Extra Low Intertitial (ELI) implant material. The research used the dip coating method to get a thin and even layer. To strengthen the adhesion of the coating, Zirconium Oxide (ZrO2) was added in commercial HA suspension. The test specimens were heated at sintering temperatures of 800 0C, 900 0C and 950 0C with a heating rate of 5 0C /minute. Layer morphology and cracks were seen using an optical microscope. The percentage of layer cracks will be measured using ImageJ software. The results obtained, the addition of ZrO2 can reduce cracks in the HA layer of the surface of the test specimen. The percentage of cracks decrease with the addition of ZrO2 (17% and 20% weight) to the suspension of the HA layer. These result is certainly good for increasing osseointegration in the human body.
Pengaruh Penambahan Filler Al2O3 dan TiO2 pada Resin Polyester terhadap Sifat Fisik dan Mekanik Ahmad Hasnul Fajri; Ilhamdi Ilhamdi; Ismet Hari Mulyadi; Jon Affi
Jurnal Teknik Mesin Vol 16 No 2 (2023): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.16.2.1187

Abstract

Polyester composites have been developed to have high strength and light density, but the fracture occurs due to very little plastic deformation or low strain values, pre-failure detection is difficult in these composites due to the rapid propagation of cracks in the composite system. To increase the strength and delay failure, the addition of filler in the form of Al2O3 and TiO2 particles is carried out. The use of particles as fillers in polymer composite materials is increasingly being developed. In this study, Al2O3 and TiO2 particles (0%, 2%, 4%, 6%, 8%, 10% vol.) were added in polyester matrix BQIN EX 157. by casting method; the liquid homogeneous mixture was carefully poured into a simple mould to be air dried. The composites were cut to serve as specimens for density test, mechanical tests such as tensile and compressive tests. The results showed a density of 1.23 g/cm3, a maximum strength of 47 MPa for 2% additional Al2O3 filler, (tensile, decreasing ̴11%) and 120 MPa (compressive) for a maximum of 2% additional Al2O3 (compressive, decreasing ̴3%) with TiO2 filler. The decrease in strength was caused by uneven particle dispersion, voids and agglomeration that occurred during the casting process.
The Pengaruh Komposisi Unsur Gadolinium (Gd) terhadap Magnesium (Mg) Melalui Casting sebagai Bahan Dasar Implan: Kajian Literatur Susanti, Oknovia; Affi, Jon; Asrilia, Yuni
Jurnal Penelitian Enjiniring Vol 24 No 2 (2020)
Publisher : Center of Techonolgy (COT), Fakultas Teknik, Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25042/jpe.112020.12

Abstract

Magnesium has potential as an implant base material because of its properties required by human bones, such as biocompatibility, non-toxic and easily dissolved (degradability). This element is needed by the human body as much as 375 Mg / day which is stored in bone and blood tissue. Magnesium is the lightest metal which has a mass type of 1.738 gr / cm3 with a modulus of elasticity of 42 GPa which is very close to the modulus of elasticity of natural human bones 10-40 GPa and can be degraded through corrosion that occurs in body fluids containing 0.9 wt% chloride. . Pure magnesium has a high corrosion rate, so there is no need to add alloying elements which can reduce the corrosion rate and at the same time improve its mechanical properties. One of them is through the addition of rare earth alloy elements, namely gadolinium. Currently, magnesium and gadolinium alloys as biodegradable materials are mostly made by casting methods. Therefore, it is necessary to make a literature review on alloys of magnesium and gadolinium by casting methods to see the effect of adding the element gadolinium to magnesium alloys suitable for bone implants in the human body. Based on the results of a literature review of the composition of the effect of the element gadolinium (Gd) on magnesium (Mg) alloys in the casting process for implant base materials, it can be seen that the addition of Gd more than 10% will increase the mechanical properties of the Mg-Gd alloy and a composition suitable for biodegradable implants can be adjusted depending on the needs and health standards as an implant. This Mg-Gd alloy has a wide range of TYS and UTS with TYS 33 MPa-200 MPa and UTS 78 MPa-250 MPa. And the more the element gadolinium is added to magnesium, the smaller the grain size. The smaller the grain size will increase the strength and hardness of the Mg-Gd alloy. Key Words: Biodegradable implants, Pengecoran, Magnesium alloy, Unsur tanah jarang
Analisis Sifat Mekanik dan Karakteristik Fisik Campuran Hidroksiapatit dari Tulang Sapi, Silika dengan Pengikat Resin sebagai Kandidat Implan Tulang Yanda, Hengki Ebitra; Gunawarman, Gunawarman; Affi, Jon; Yetri, Yuli
Jurnal Teknik Mesin Vol 17 No 2 (2024): Jurnal Teknik Mesin
Publisher : Politeknik Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30630/jtm.17.2.1608

Abstract

Ceramic biomaterials based on hydroxyapatite (HA) and silica have been extensively studied due to their load-bearing capabilities in bone replacement and reconstruction applications. This study presents an analysis of the mechanical properties and physical characteristics of a mixture of bovine bone hydroxyapatite and silica with a resin binder as a candidate for bone implants. the objective of this research is to examine the effect of the quantity of hydroxyapatite grains and the composition of silica reinforcement particles on the mechanical and physical properties of the product. The methodology involves mixing bovine bone hydroxyapatite and silica in ratios of 90:10, 80:20, and 70:30. Subsequently, the specimens were molded and subjected to tensile tests to determine their tensile strength and elongation. Surface morphology analysis was conducted using a scanning electron microscope (SEM), while functional group and crystallographic analyses were performed using FTIR and XRD. the results indicate that the 70:30 composition provided the best outcomes, with a tensile strength of 13.07 MPa, compared to the 90:10 and 80:20 compositions, which had tensile strengths of 6.68 MPa and 12.96 MPa, respectively. The microstructure of the surface after tensile testing shows that the addition of silica can increase mechanical strength and reduce the porosity of the specimen surface.
Mechanical Properties and Microstructure of Artificial Bone Prototype Made of Bovine Bone Powder by Mixing Method Paskarino, Rio; Affi, Jon; , Gunawarman
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 23 No 1 (2015): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v23i1.440

Abstract

The purpose of this study is to obtain bovine bone powder with high content calcium-phosphorus coumpound through combination of ball milling and heating processes. These processes was carried out in four stages at a temperature of 800°C for heating process. The obtained powder was then mixed with zirconia and resin, and then molded into a metal mold to obtain artificial bone prototypes in the form of dog-bone tensile test specimen. The tensile test was then conducted to the specimens to obtain the strength and strain capacity of the artificial bones. Fractured specimen surface morphology and sample microstructure were then examined using a scanning electron microscope (SEM) equipped with Energy Dispersive X-ray (EDX). The result of this study shows that the highest levels of calcium and phosphorus contents is 35.07% and 19.04%, respectively, with powder fineness of 63 ?m. The strength of artificial bone varies according to the powder volume fraction, where the fraction of 90% powder and 10% resin gives the strength 5,57MPa. While the fractions of 80-20, 70-30 and 60-40 give the strength of 11.84 MPa, 13.66 MPa, and 9,56 MPa, respectively. The microstructure of the specimens shows micro cracks, voids, detachement particles, and agglomeration with different extent depend on the fraction of the powders.
Synthesize and Characterization of Hydroxyapatite from Freshwater Snail Shell Sulcospira Sp. Proceed by Combination of Ball Milling and Heat Treatment Fajri, Hidayatul; , Gunawarman; Affi, Jon; Putra, Rezky Syahemi
Journal of Ocean, Mechanical and Aerospace -science and engineering- Vol 37 No 1 (2016): Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Publisher : International Society of Ocean, Mechanical and Aerospace -scientists and engineers- (ISOMAse)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36842/jomase.v37i1.398

Abstract

Hydroxyapatite is one of important material in orthopedic application because its features like human bone, and it has potential to replace metal and ceramic in implantation. Hydroxyapatite may get from waste which rich calcium like sea shell and snail shell. In this research, the characterization of raw materials of hydroxyapatite from freshwater snailshell (Sulcospira sp.) was investigated. The shell was milled with ball mill in 200 rpm during 15 minute with 4 steps. Between the milling was conducted heat treatment process at temperature 900°C for 4h. The shell powder was then sorted based on its roughness with siever machine. Powder characterization was done with Scanning Electron Microscope (SEM), Energy Dispersive X-ray (EDX) and X-ray Diffraction (XRD). Result of this study show that the minimum size of powder about 67 µm and percentage of calcium in the powder is increased until 55%.
Synthesis and Characterization of TEOS-based Materials for Hydrophobic Corrosion Protection as Silica Irpansyah Siregar; Jon Affi; Yuli Yetri; Hariyati Lubis; Tengku Machdhalie Sofie
Joint Prosiding IPS dan Seminar Nasional Fisika Vol. 14 No. 1 (2026): Joint Prosiding IPS dan Seminar Nasional Fisika
Publisher : Program Studi Pendidikan Fisika dan Program Studi Fisika Universitas Negeri Jakarta, LPPM Universitas Negeri Jakarta, HFI Jakarta, HFI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/03.1401.FA02

Abstract

This research prepared superhydrophobic protection based on tetraethyl orthosilicate (TEOS) as a silica substitute using the sol-gel method. The raw material involved sodium silicate, TEOS, cetyltrimethylammonium bromide (CTAB) surfactant, and trimethylammonium chloride (TMACl). Characterization techniques employed include Scanning Electron Microscopy coupled with Energy Dispersive Spectroscopy (SEM-EDS), X- Ray Fluorescence (XRF), and X-Ray Diffraction (XRD). According to the XRD analysis, a characteristic diffraction peak of silica was observed at 2θ = 31.680°. The SEM results revealed a uniform surface morphology, attributed to the homogeneous grinding process during sample preparation. The EDS investigation exhibited the elemental compositions of Si, Fe, O, Cl, and C. The XRF analysis confirmed the presence of silicon (Si), originating from TEOS, which was used as the silica source. The water contact angle test shows sample with 10% TEOS has highest angles as 50. 56 degree.
Co-Authors , Gunawarman Abdul Ajiz, Abdul Afdal Afdal, Afdal Ahmad Hasnul Fajri Asrilia, Yuni Deki Zulkarnain Desmarita Leni Djong Hon Tjong G Gunawarman, G Hariyati Lubis Harri Biora Putra Hidayatul Fajri Ilhamdi Ilhamdi Ilhamdi, Ilhamdi Irpansyah Siregar Ismet Hari Mulyadi Menkher Manjas Munawarman, Munawarman Nuswantoro, Nuzul Ficky Paskarino, Rio Putra, Rezky Syahemi Raden Mohamad Herdian Bhakti Sanny Ardhy Susanti, Oknovia Tengku Machdhalie Sofie Ultra Marsedi Yanda, Hengki Ebitra Yuli Yetri Yuli Yetri