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All Journal Info-Teknik Turbo : Jurnal Program Studi Teknik Mesin Jurnal Elemen Jurnal Pengabdian Al-Ikhlas Scientific Journal of Mechanical Engineering Kinematika JMIO: Jurnal Mesin Industri dan Otomotif Journal of Industrial Engineering and Operation Management (JIEOM) Jurnal Taguchi : Jurnal Ilmiah Teknik dan Manajemen Industri
Akhmad Syarief
Lambung Mangkurat University
Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Journal : Info-Teknik

 1 
Kekuatan Tarik Baja St 37 pada Proses Las Oksi - Asetilen Akhmad Syarief
INFO-TEKNIK Vol 5, No 1 (2004): INFOTEKNIK VOL. 5 NO. 1 2004
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v5i1.652

Abstract

Welding is a process of joining metals by pressure when the metal are hot. Welding planning to get a good result is a complicated process. A welding work should be planned about its way, observing the material and its type of welding. The procedure of welding involves: choosing parameter of welding type of being used, type of filling metal, type and also the thickness of metal plat and condensor as mediator and some standartd condition in welding in which the parameters will effect the mechanical characters of welding.An example of welding type is Oxy-Acetyline Welding (OAW). The heat being produced is lower, so this kind of welding is good to weld the thinner stainless steel ( 3 mm). The thicker one needs a longer welding time so that, it is not economic. This kind of welding is good for a thick stainless steel before using electrical welding. This welding is used for a simple construction that is not need strength, example in the fenceof a house or for welding a house hold.This process, uses material of  ST-37 steel plate with 3 mm thickness. Weld with 1-2 mm in space between thew both material. Set the barometer up on the acetyline bottle is about 0,5 bar and the pressure on oxyigene bottle is about 2,5 bar, and a weather condensor. Use RBuZn-A, RBuZn-B and RBuZn-D as filling metal. Then do test.
ANALISIS KEBUTUHAN UDARA PEMBAKARAN UNTUK MENGOPTIMALKAN PROSES PEMBAKARAN BOILER PT. PLN (PERSERO) SEKTOR PEMBANGKITAN ASAM ASAM UNIT 3 & UNIT 4 Akhmad Syarief; Yudistira Bayu Setiambodo; Muhammad Nizar Ramadhan; A'yan Sabitah
INFO-TEKNIK Vol 21, No 1 (2020): INFOTEKNIK VOL. 21 NO. 1 JULI 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i1.8966

Abstract

The performance of a power plant unit is strongly influenced by various aspects, one of which is very determined by how the combustion process occurs in the combustion chamber, because it can affect the efficiency of the power plant itself, especially in the efficiency aspects of the boiler combustion process. To find out the efficient operation of the boiler, the operator as the holder of the power plant must understand what the combustion process is like in it. Good combustion will always require the right combination of fuel and air (oxygen). From the results of the research that has been done, it can be seen that if the actual amount of air flow needed for the combustion process is closer to the ideal air flow value it will indirectly increase the combustion efficiency value of the boiler.
PENGARUH ORIENTASI SERAT DAN WAKTU ALKALISASI PADA LAMINATES COMPOSITE POLYESTER-SERAT BEMBAN (DONAX CANNIFORMIS) TERHADAP KEKUATAN BENDING, IMPACT DAN BENTUK PATAHAN Akhmad Syarief; Achmad Azhar Basyir; Andy Nugraha Andy Nugraha
INFO-TEKNIK Vol 22, No 2 (2021): INFOTEKNIK VOL. 22 NO. 2 DESEMBER 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i2.12387

Abstract

Plant Bemban (Donax canniformis) is one of the plants that is often found in the swamp area of South Kalimantan that grows wildly on the roadside and around the home garden. The purpose of this study is to find out how large the bending strength and composite impact is reinforced with bemban fiber with polyester matrix with variations in fiber orientation and alkalization time. The method is done by alkalizing the banana fiber with 4% NaOH solution with a variation of 30 minutes, 60 minutes and 90 minutes. The process of making composites with 3 layers varies the direction of fiber A (0°,45°,90°), B (45°,90°,0°), C (90°,45°,0°) and the method used is how to hand lay up. Broken photos after testing using macro photo observations. The results showed that the specimens with the highest immersion time of 30 minutes for bending with variations A (0°,45°,90°) of 112.24 MPa and the lowest at 60 minutes with variation C (90°,45°,0°) amounting to 12.67 MPa. Price impact (HI) is highest at 60 minutes immersion time with variations A (0°,45°,90°) of 0.0208 joule/mm2 and the lowest at 30 minutes immersion time with variation C (90°,45°,0°) of 0.0115 joules/mm2.
ANALISIS PERFORMA TURBINE OIL COOLER DI PLTU ASAM ASAM UNIT 1 Akhmad Syarief; Rangga Mahesa
INFO-TEKNIK Vol 22, No 1 (2021): INFOTEKNIK VOL. 22 NO. 1 JULI 2021
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v22i1.11477

Abstract

Performance analysis of a heat exchanger is a method used to determine the performance of a heat exchanger. The purpose of this study is to determine the heat balance value, heat transfer coefficient, pressure drop, and calculate efficiency. In this study discussed about shell and tube heat exchanger type which serves to cooling Turbine Generator shaft bearing oil with Cooling Tower water. The data studied for 1 month in September and 2 data point were taken in 1 day, namely at 3:00 a.m. (WITA) and 12.00 WITA (daytime) and not describe the system as a whole. The method in this study using the principles of heat transfer and the LMTD approach (logarithmic Mean Temperature Difference) and the kern method. The results of this study indicate that the average heat balance (Q) is 159,798.9 Btu/dhr with the heat transfer area (A) of 580,172 ft2 and the average heat transfer coefficient equal to 10,965 Btu/hr.ft2.oF. For the reduction of heat exchanger is still within the allowable limit, namely with an average of 0.01 kg/cm2. As for the efficiency of the heat exchanger observed it has an average which is quite low at 51.95% but still recommended to operate.
STUDI EKSPERIMENTAL GASIFIKASI UPDRAFT SEKAM PADI DAN BATUBARA KUALITAS RENDAH BERKATALIS BENTONIT UNTUK PRODUKSI SYNGAS Akhmad Syarief; Maidi Maidi
INFO-TEKNIK Vol 20, No 1 (2019): INFOTEKNIK VOL. 20 NO. 1 JULI 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i1.6961

Abstract

This Research aims to determine the amounts generated in the gas liquefactiongas process rice husk with lowcoal quality at temperatures at 500 ° C and to know the speed of the updraft gasification process rice husk and the low coal quality of Bentonite catalyst. This research uses updraft type gasification where the gas that can be generated from the gasifer section will flow into the flowmeter and will be accommodated in the urine bag. In this study obtained syngas results on the process of updraft rice husk gasification and low quality coal berkatalis bentonit. Most Syngas produce on sample A SP 200 gr: BB 0 gr: B 100 gr equal to 36,72L. In sample B 180gr: 20gram: 100gr at 31,47L. In the sample C 140gr: 60gr: 100gr At 27.3L. and the lowest volume of syngas produced on the D sample 100gr: 100gr: 100gr at 24.28L. The heating rate that can be used in the gas filtration process and the low quality coal catalyzed bentonite is obtained at the highest heating rate in sample A 200gr: 0gr: 100gr at 16.89 ° C / min. In sample B 180gr: 20gr: 100gr at 15.25 ° C / min. In sample C 140gram: 60 grams: 100 grams of 13.13 ° C / min The lowest heating rate was obtained in D 100gr: 100gr: 100gr at 11.26 ° C / min.
PENGARUH SUPLAI UDARA TERHADAP KARAKTERISTIK BENTUK DAN TEMPERATUR NYALA API DARI UAP PREMIUM A'yan Sabitah; Moh. Sulhan; Ricky Indriyanto; Akhmad Syarief
INFO-TEKNIK Vol 21, No 1 (2020): INFOTEKNIK VOL. 21 NO. 1 JULI 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i1.8960

Abstract

The scarcity of LPG gas that often occurs in Indonesia often makes Indonesian citizens uneasy. This scarcity led many researchers to conduct research that could reduce the dependence of Indonesian citizens with LPG gas. In this study, researchers conducted tests related to the use of premium steam as fuel. This test is carried out by varying the air supply, where this supply has been determined at 2 km/cm2 , 3 km/cm2 and 4 km/cm2 , in addition to the air supply this test also performs fire temperature measurements using thermocouples and data logers, where the location of the thermocouple has been located at points 1 cm, 3cm and 5 cm from the mouth of the nozzle. Based on the test results, the shape of the flame from variations in the air supply obtained the best and stable results were in the 3 km/cm2 air supply, while the other for the 2 km/cm2 air supply was found to be unstable fire and for which the 4 km/cm2 fire air supply looked large and unstable. Whereas for the highest temperature of the three placement points the thermocouple is located at the top point with a distance of 5 cm from the mouth of the fire with an average temperature of around 900oC and the lowest temperature is at 1 cm from the nozzle mouth, where the temperature is at 400oC to 550oC, in addition The temperature stability is in the air supply of 3 km/cm2
UJI EKSPREMENTAL KARAKTERISTIK BRIKET ARANG BERBAHAN BAKU LIMBAH SEKAM PADI SIAM DAN PANDAK A'yan Sabitah; Apip Amrullah; Akhmad Syarief
INFO-TEKNIK Vol 20, No 1 (2019): INFOTEKNIK VOL. 20 NO. 1 JULI 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i1.6958

Abstract

Utilization of waste rice husk, especially in South Kalimantan, is not very efficient. Therefore, it needs more maximal utilization, for example it is used to manufacture alternative fuels in the form of charcoal briquettes. The effort to maximizing utilize waste rice husk as charcoal briquettes, we need to know the combustion characteristics. The study, we used a variation of the ratio between siam rice husk charcoal in the peat region areas and pandak is located in the tidal areas with adhesives of 5%, 10% and 15% respectively. Characteristics of testing follows SNI 01-6235-2000. Based on the results of the study, it is known that the charcoal waste of rice husk waste with a percentage of 5% adhesive has a good value compared to the addition of other adhesives, where siam rice husk has a water content of 4.9% and pandak has a higher moisture content of 5.0%, whereas for husk heating values Pandak rice is larger with a value of 5063.6 cal / gram, compared to siam rice husk with a value of 4894.5 cal / gram.
Co-Authors Abdul Ghofur Achmad Azhar Basyir Ade Azhari Rahmatuloh Ahmad Ramadan Akhmad Ghiffary Budianto Akhmad Maulana Gumai Akhmad Wahyudi Akhmad Yafie Andy Nugraha Apip Amrullah Aulia Aufa Ramadhasari Bagus Lutfiwijaya Baramsyah Baramsyah Candra Dwi Putra Defrihans Galang Putranto Dhanu Suryanta Dwi Suci Adianto Fadliyanur Hansen Rivaldo Napitupulu Isworo, Hajar Lukmanul Hakim Maidi Maidi Misbachudin Misbachudin Moh. Sulhan Muhammad Ainur Rahman Muhammad Arzy Satria Muhammad Nizar Ramadhan Nanda Dwiguna R.M.B Agung E.W Rangga Mahesa Ricky Indriyanto Sabitah, A'yan Sigit Mujiarto Taufik Irfansyah Sofian Tumanggor, Agustina Hotma Uli Yopi Riyanto Yudistira Bayu Setiambodo