The Effect of Particulate Reinforcement Addition to Latent Heat and Solid Fraction During Solidification of Titanium Carbide Particulates Reinforced Aluminium Alloy Matrix Composite Produced by Vortex Mixing-Sand Casting Technique

In this study the effect of particulate reinforcement addition to latent heat generation and solid fraction during solidification of metal matrix composite is investigated. Vortex mixing - sand casting technique is employed to produce the specimens. Solidification data during the casting process is acquired and studied using Fourier thermal analysis (FTA) to calculate the latent heat generation and solid fraction. In this study latent heat and fraction solid are obtained by performing calculations based on FTA. The results show that when volume fraction of particulate reinforcement is increased, the fraction solid rate is faster and the latent heat generation during solidification decreased. It is concluded that as more particulate reinforcement is added, it promotes faster solidification during the casting process

Production and solidification analysis of titanium carbide particulates reinforced aluminium alloy matrix composite by vortex mixing - sand casting technique

In this study, production and solidification analysis of metal matrix composite (MMC) consisting of titanium carbide particulates reinforced aluminium-11.8% silicon alloy matrix are done. A combination of vortex mixing - sand casting technique is used as the manufacturing method to produce the specimens. Thermal measurement during the casting process is captured and solidification graphs are plotted to represent the solidification characteristic. The result shows that as volume fraction of particulates reinforcement is increased, solidification time becomes faster. Particulates reinforcement promotes solidification which will support finer grain size of the casting specimen and in turn produce better mechanical property. Hardness test is performed and it confirms that hardness number increases as more particulates are added to the MMC system

TAGUCHI METHOD APPLIED FOR THE INVESTIGATION OF CORROSION LEVEL ON METAL INERT GAS WELDING OF MILD STEEL

Mild steel has a wide range of uses such as in the construction field, automotive field, machinery industry, cookware, and pipeline. Metal Inert Gas (MIG) welding act as an assembly method of mild steel. Corrosion level is a common problem that occurs in MIG welding on mild steel. In this study, the suitable welding parameters such as voltage, number of passes, and method of welding were chosen in the experimental testing and the experimental testing was planned by using the Design of Experiment (DoE) as part of Taguchi method. The welded mild steel specimens were evaluated using a corrosion test. The data analysis was done by using Taguchi method. For the parameter to be the optimum welding parameter, the corrosion level was as low as possible. In this case, the S/N ratio smaller is better common interest is chosen. By using the Minitab 18 software, the S/N ratio was calculated. Hence from the result, the optimum parameter is 9V voltage, three passes and the welding method was circle push

Solidification analysis in permanent mould casting of aluminium alloy LM6 reinforced titanium carbide particulates metal matrix composites

Permanent mould casting was used as the production technique to produce the metal matrix composites (MMCs) specimens. Thermal measurements during the casting process were recorded. Based on these data, solidification graphs were plotted to understand the solidification characteristics. Solidification analysis was performed by interpreting the parameters drawn from the solidification graphs. Parameters such as; nucleation primary alpha phase temperature, liquidus arrest temperature, eutectic growth temperature and solidification time were identified. The results showed that addition of titanium carbide particulates (TiCp) into the aluminium-11.8% silicon alloy (LM6) have affected various time and temperature parameters of its solidification properties. These in turn will have an influence on the mechanical property of the MMCs

Advancement in friction stir processing on magnesium alloys

This review paper gathers information on the current trend of friction stir processing (FSP) that had been utilized to alter the surface metal that offers greater properties on magnesium alloys. However, inconsistent results due to changing parameters and different pin profile designs used previously was a challenge in this process. Hereby, discussing on FSP parameters, tool properties and impacts on magnesium (Mg) alloys to improvise the process. Rotational speed and traverse speed were set beforehand. Tool was plunged onto the material and moved in the traverse direction along certain length. The microstructure and microhardness properties of FSPed material were observed. AZ series of magnesium alloys mostly used in FSP. Most significant review was that the fixed rotational speed and feed rate made the grains became coarser. Finer grains were found when rotational speed was constant while feed rate increases. The higher the traverse speed, the higher the hardness of specimens. Setting up rotational speeds in between (900-1400) rpm could minimize defects effectively. Traverse speeds were set in between (25-40) mm/min to prevent pin holes and tunnel defects. Rotational speed affects the grain refinement level and the width of stirred zone while traverse speed influences the material flow rate

Morphological study of friction stir processed aluminium metal matrix composites

This paper demonstrates the morphological study of friction stir processed (FSPed) aluminium metal matrix composites. Friction stir processing was implemented during fabrication process to produce metal matrix composites (MMC). The MMC consisted of aluminium alloy AA6061 and rice husk ash (RHA) particles. The morphological study compared the wear performance of as-received AA6061, FSPed AA6061 and FSPed AA6061/6 vol% RHA. The result showed that the FSPed AA6061/6 vol% RHA had the best wear performance among the other specimens. This was specified by less delamination, smoother worn surface and shallower grooves on this FSPed composite compared on the alloy material as presented in the scanning electron microscopy (SEM) morphological study

Investigation of wear performance of friction stir processed aluminium metal matrix composites

In this work the reference materials used were AA6061 Al alloy. Hence, the wear performance was to be improved by introducing friction stir processing (FSP) aluminium alloy AA6061. Furthermore, FSPed AA6061 was reinforced by rice husk ash (RHA) of 6% volume fraction. The FSP fabrication parameters used were rotation speeds at 1000 rpm, 1400 rpm and 1600 rpm with a constant traversed speed of 25 mm/min. Pin-on-disc tribometer was used to investigate the wear properties. The mass loss and specimen materials’ wear rate were the final outcomes. It was found that wear properties had improved for FSPed AA6061/6 vol% RHA compared to FSPed AA6061 followed by AA6061. The best result was achieved by FSPed AA6061/6 vol% RHA fabricated at 1600 rpm and 25 mm/min, the mass loss was 0.02 g and the rate of wear is 0.97 × 10-3 mm3/Nm

PEMBUATAN VIDEO PROFIL SEBAGAI PENGABDIAN KEPADA MASYARAKAT DI KAMPUNG TEMATIK KERAJINAN ARKILIK GUNUNG PANGILUN KOTA PADANG

Pengabdian masyarakat ini dilakukan di Kampung Akrilik terletak di Kecamatan Gunung Pangilun, Kota Padang, Sumatera Barat. Kampung ini adalah salah satu kampung tematik yang dicanangkan oleh Bapak Walikota Padang dengan Dinas terkait. Tepatnya pada tanggal 11 November 2021, Bapak Walikota mengadakan pertemuan dengan wakil Perguruan Tinggi di Padang untuk memulakan program pendampingan terhadap kampung tematik demi menyukseskan program tersebut. Hasil wawancara awal oleh tim yang telah dilakukan kepada pengrajin mendapatkan bahwa penjualan di Kampung Akrilik kondisinya saat sekarang sedang mengalami kelesuan dalam penjualan akibat Pandemi Covid-19. Dengan adanya permasalahan ini, telah diputuskan untuk membantu dari segi promosi dalam bentuk Video Profil bagi usaha Kampung Akrilik. Video Profil, dibuat secara profesional dan menarik. Video ini akan disasarkan kepada segmen pasar konsumen semua usia. Isi video ditampilkan dengan pembawaanbercerita untuk memproduksi video promosi yang menarik. Serta berisi kata-kata yang dapat membuatcalon konsumen masuk ke dalam cerita dan menyenangi produk yang dipromosikan. Dengan adanya media dalam internet seperti YouTube, TikTok, Instagram dan lain-lain. Diharapkan Video Profil ini akan mencapai target konsumen secara meluas dan tepat mencapai sasaran. Dengan adanya Video Profil inidiharapkan bisa membantu Kampung Akrilik dapat bergeliat lagi dan meningkatkan penjualannya hingga mencapai sales volume seperti sebelum pandemi.Pengabdian masyarakat ini dilakukan di Kampung Akrilik terletak di Kecamatan Gunung Pangilun, Kota Padang, Sumatera Barat. Kampung ini adalah salah satu kampung tematik yang dicanangkan oleh Bapak Walikota Padang dengan Dinas terkait. Tepatnya pada tanggal 11 November 2021, Bapak Walikota mengadakan pertemuan dengan wakil Perguruan Tinggi di Padang untuk memulakan program pendampingan terhadap kampung tematik demi menyukseskan program tersebut. Hasil wawancara awal oleh tim yang telah dilakukan kepada pengrajin mendapatkan bahwa penjualan di Kampung Akrilik kondisinya saat sekarang sedang mengalami kelesuan dalam penjualan akibat Pandemi Covid-19. Dengan adanya permasalahan ini, telah diputuskan untuk membantu dari segi promosi dalam bentuk Video Profil bagi usaha Kampung Akrilik. Video Profil, dibuat secara profesional dan menarik. Video ini akan disasarkan kepada segmen pasar konsumen semua usia. Isi video ditampilkan dengan pembawaanbercerita untuk memproduksi video promosi yang menarik. Serta berisi kata-kata yang dapat membuatcalon konsumen masuk ke dalam cerita dan menyenangi produk yang dipromosikan. Dengan adanya media dalam internet seperti YouTube, TikTok, Instagram dan lain-lain. Diharapkan Video Profil ini akan mencapai target konsumen secara meluas dan tepat mencapai sasaran. Dengan adanya Video Profil inidiharapkan bisa membantu Kampung Akrilik dapat bergeliat lagi dan meningkatkan penjualannya hingga mencapai sales volume seperti sebelum pandemi

Investigation on the effect of different friction stir machining tools shape on the mechanical properties of magnesium alloy work piece

Friction stir process (FSP) is a method of solid-state consolidation that uses an inexhaustible tool to increase the modification of work piece structural. This current work presents a study of friction stir process on magnesium (Mg) alloy work piece using different design of pin profiles tool. Experiments were conducted in dry condition where tool progression was monitored carefully in every milling passes, then the effect and quality criterion were measured. Result shows that the dominant tool of friction stir process mechanism of mild steel tool is the strength intensity increased at higher speed and lower plunge length due to the superiority of friction stirred region on the magnesium. Furthermore, the hardness of the stirred friction of Mg alloy also increased by using a triangle pin profile design