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Info-Teknik
Published by Universitas Lambung Mangkurat
ISSN : 08532508     EISSN : 24599964     DOI : http://dx.doi.org/10.20527
Core Subject : Engineering,
Engineering
Jurnal Info – Teknik menerbitkan artikel – artikel karya orisinil dan signifikan pada Bidang Rekayasa Teknik.
Arjuna Subject : Teknik (semua kategori) - Teknik (Lain-Lain)
Articles 425 Documents
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ANALISIS KEKERASAN BAJA S45C HASIL HARDENING DENGAN VARIASI MEDIA PENDINGIN Subagiyo Subagiyo; Asrori Asrori; Lisa Agustriyana
INFO-TEKNIK Vol 19, No 1 (2018): INFOTEKNIK Vol. 19 No. 1 Juli 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v19i1.5141

Abstract

Steel has good mechanical properties compared with the other materials, that is strength, hardness, rigidity, etc. Specially the steel hardness can be increased by heat treatment (Hardening). The purpose of this research is to obtain information about hardness of S45C steel after hardening by variation of cooling media. This research were used Ø 25 mm x 10 mm S45C steel, Hardened by variation of cooling media and then they were tested by Rockwell Harness Test. The result showed that the hardness of S45C steel after hardening increased from about 15 HRC (before hardening) to 71.89 HRC (Brane quenching), 68.22 HRC (Water quenching), 64.67 HRC (Water + Soluble oil quenching) and 56.89 HRC (Oil quenching), but for the range were opposite to 3.84 HRC (Brane quenching), 4.24 HRC ( Water quenching), 4.22 HRC (Water + Soluble oil quenching) and 5.65 HRC (Oil quenching)
ANALISIS PERBANDINGAN SIFAT MEKANIS PIPA TEMBAGA AC BARU DAN BEKAS R.N. Akhsanu Takwim; Kris Witono; Bambang Irawan
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.158

Abstract

In the repair of the installation of air conditioners or refegeration are oftenfound referigeran (ACR) tube that must be replaced because the old copper tubeleaked on the connection. Replacement is done because the repair of the connectionby cutting and flaring the connection usually fails in the form of a tear on the flaredpart.The cause of flaring failure in the used air conditioner tube by testing themechanical properties and the microstructure of the material and compared with themechanical properties and the microstructure of the new tube material.Knowing thecauses of the failure can be searched for the prevention and repair solutions so thatthe old tube can be used without replacement.The tensile test results showed that the average ultimate strength of the usedACR copper tube has increase in strength of 18188.65 N/mm2 comparing with theultimate strength of the new copper tube which was only 14615.15 N/mm2.The microVickers test results show the same phenomenon from the tensile test results, wherethe hardness value of used ACR tube has 42.7 HV while the new ACR tube is 37.8HV.Microstructure testing with SEM shows the changing in grain structure from alongitudinal shape with a large enough grain size and tenuous in a new tube, to moreflat and dense longitudinal grain structure for used tube.
PENGARUH TEMPERATUR ANELING TERHADAP KEKERASAN DAN KEKUATAN PIPA TEMBAGA AC BEKAS R. N. Akhsanu Takwim; Kris Witono; Pondi Udianto
INFO-TEKNIK Vol 20, No 2 (2019): INFOTEKNIK VOL. 20 NO. 1 DESEMBER 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i2.7717

Abstract

During the installation process, copper pipes for air conditioning will experience a very large deformation due to straightening and bending following the installation path. Hardening strains occur that result in changes in mechanical properties in this case decreases ductility making it difficult to do the connecting process with flaring. Studies need to be carried out to restore the mechanical properties of copper pipes that have been used, including the heat treatment process on copper pipes, so that used copper pipes have a better benefit value than having to be recycled. The temperature of the heat treatment is varied from 400oC, 500 oC and 600 oC. Tensile test results show that at annealed temperature of 400 oC has the highest tensile strength of 125.81 N / mm2 and proportional limit stress of 40.52 N / mm2. Whereas in the microhardness test, the highest hardness occurs also at annealed temperature of 400 oC which is equal to 50.8 HV.
ANALISIS LAPISAN CETAK PRINTER 3D SPESIMEN PLASTIK PLA KELIPATAN 0,05 mm TERHADAP ENERGI PUKUL Puspitasari, Etik; Wirawan, Wirawan; Hadi, Syamsul
INFO-TEKNIK Vol 21, No 2 (2020): INFOTEKNIK VOL. 21 NO. 2 DESEMBER 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i2.10049

Abstract

Tidak diketahuinya energi pukul (EP) hasil uji pukul dalam pembuatan spesimen plastik dengan printer 3D berbagai tebal per lapisan menjadi masalah yang dihadapi. Tujuan analisis untuk memperoleh EP spesimen plastik yang linier atau tidak. Metoda analisis meliputi: desain bentuk dan ukuran spesimen plastik, pencetakan spesimen dengan printer 3D dari filamen plastik jenis PLA diameter 1,75 mm dimulai dari tebal lapisan 0,1 mm hingga 0,5 mm dengan kelipatan lapisan 0,05 mm dan dibuat fulfill (tidak berongga) pada temperatur 200℃, uji pukul charpy, perhitungan EP, dan analisis hasil. Hasil analisis uji pukul dari spesimen tebal layer 0,1-0,35, EP naik dan spesimen tebal lapisan 0,4-0,5 EP mulai turun dan nilainya sama. Puncak EP yang dihasilkan berada pada tebal lapisan 0,35 mm dengan EP senilai 1,264 J dan energi pukul spesifik (EPS) atau harga impact (HI) senilai 0,01261 J/mm2 dan di posisi kedua pada tebal lapisan 0,3 mm dengan EP senilai 1,215 J dan EPS senilai 0,01212 J/mm2 yang menunjukkan bahwa hasilnya tidak linier atau semakin tebal lapisan tidak selalu kekuatannya semakin besar dan spesimennya semakin kuat dan paling kuat berada di tebal lapisan 0,35 mm. Hasil visual spesimen uji pukul dari plastik dengan printer 3D semakin kecil lapisan yang digunakan semakin halus dan memiliki estetika yang bagus.
ANALISIS KUAT TEKAN BETON DENGAN BAHAN TAMBAH REDUCED WATER DAN ACCELERATED ADMIXTURE Rahmat Rahmat; Irna Hendriyani; Moh. Syaiful Anwar
INFO-TEKNIK Vol 17, No 2 (2016): INFOTEKNIK VOL. 17 NO. 2 2016
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v17i2.2497

Abstract

Concrete consist of: cement mortar, coarse aggregate, fine aggregate, water, and addictive materials. The main ingredient in manufacturing of concrete: rock material that called as aggregates. Aggregate has an important role on the quality of the concrete. Various types and trademarks for admixture of concrete that can be used as addictive of the concrete mix with specific purpose. The study aims to determine the effect of the added material of Reduced Water and Accelerated Admixture (Bestmittel) on compressive strength of concrete.The research was conducted in four variations with compressive strength of 25 MPa. One of each variation consists of nine cylinders with length of 30 cm and diameter of 15 cm. Concrete mix with added material Reduced Water and Accelerated Admixture (Bestmittel) in testing at the age of 7 days, 14 days and 28 days, with a variation of 0.2%, 0.4% and 0.6% with 9 samples one of each them. One is normal concrete cylindrical specimen as comparison.The research show by adding Reduced Water and Accelerated Admixture (Bestmittel) by 0.2%, 0.4% and 0.6% by weight of cement and water will (1) increase the workability and (2) increase of average compressive strength of normal concrete (0,2% for 25.61 Mpa; 0,4% for 27.66 Mpa; 0,4% for 29.50 Mpa; and 0,6% for 31.44 Mpa).
IMPLEMENTASI IT SUPPORT OFFICER PDAM BANDARMASIH Dwi Retnosari; Astrina Dwiyanti
INFO-TEKNIK Vol 18, No 1 (2017): INFOTEKNIK Vol. 18 No. 1 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v18i1.3874

Abstract

One of the most important developments in information technology today is the need for the use of compatible, efficient, flexible and compatible data processing tools to solve existing problems in the enterprise. PDAM Bandarmasih is one company that utilizes technology for the company. From here comes the problem of hardware and software used must always be maintained, cared for, and observed its development.Implementation of IT Support Officer can manage PDAM management request. The request is in the form of repairing the problem computer, requesting the addition or replacement of spare parts, reffil catridge / tooner and distribution and others in the case of order request management and other complaints related to information technology in the company. This journal discusses the process of analysis, design in the implementation of IT Support Officer web-based and perform system testing.
PEMANFAATAN ABU TERBANG DAN ABU BATU STONE CRUSHER SEBAGAI FILLER PADA LAPIS BETON SEMEN PONDASI BAWAH (CEMENT TREATED SUBBASE/CTSB) Yasruddin Yasruddin; Fauzi Rahman; Ayu Kumala Sari
INFO-TEKNIK Vol 18, No 2 (2017): INFOTEKNIK VOL. 18 NO.2 2017
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v18i2.4351

Abstract

Subbase course  is a part of pavement courses between the base course and subgrade. The types of subbase course commonly used in Indonesia include: using good aggregate gradation and Cement Treated Base stabilization, Lime Treated Base stabilization, Soil Cement Stabilization and soil stabilization with lime (Soil Lime Stabilization). In the General Specification 2010 of the Ministry of Public Works of the Directorate General of Highways, aggregate stabilization with cement in the subbase course is called Cement Treated Subbase (CTSB). This CTSB has specifications with aggregate compositions which must meet the requirements in the sieve analysis specification: 95 - 100% pass the sieve in 1½ inche; 50 - 100% pass the sieve in ¾ inche; 20 - 60% pass the sieve of number 8 and 0 - 15% pass the sieve  of number 200. The minimum compressive strength at 28 days should not be less than 75 kg/cm2 (7.5MPa). This research use fly ash and stone ash of stone crusher as filler which passing sieve number 200.               The research begins with mortar research by varying the content of fly ash and stone ash of stone crusher by 0%, 5%, 10% and 15%. Mortar compressive strength was tested at age 3, 7, 14, 21, and 28 days. In this mortar research sought the largest compressive strength (optimum) to be continued to concrete research. The planned compressive concrete strength of 7.5MPa is tested at 28 days.               Optimum mortar compressive strength was found on fly ash filler 10% age 28 day equal to 23.4MPa, stone ash of stone crusher filler 5% age 28 day equal to 17.21MPa and normal filler 0% age 28 day equal to 25.0MPa. As for compressive strength for CTSB normal concrete the average value is 13.49MPa, CTSB fly ash concrete 10% the average value is 14,72MPa and CTSB stone ash of stone crusher concrete 5% the average value is 11,80MPa at age 28 days. CTSB concrete strength test results in accordance with the General Specification 2010 of the Ministry of Public Works of Directorate General of Highways with a minimum compressive strength of 7.5MPa. Based on the result of concrete testing, fly ash and stone ash of stone crusher as filler can be used for CTSB (Cement Treated Subbase).
PENGARUH JUMLAH SUDU TERHADAP KINERJA TURBIN ANGIN SUMBU VERTIKAL TIPE DARRIEUS-H NACA 3412 DENGAN SUDUT PITCH 00 Arif Rochman Fachrudin
INFO-TEKNIK Vol 19, No 2 (2018): INFOTEKNIK VOL. 19 NO. 2 DESEMBER 2018
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jit.v19i2.153

Abstract

Potential and utilization of renewable energy in Indonesia is still very small. Oneof the renewable energy sources is wind energy. The use of wind turbines, windenergy is converted into mechanical energy and can then generate electricitythrough a generator. Wind turbines are environmentally friendly, inexpensive,easy to operate and easy to maintain. The purpose of this study was to determinethe effect on the performance of the number of blades and wind speed for thevertical axis wind turbine type darrieus H with the NACA profile 3412 with apitch 0o angle. This study uses an experimental method, with a number of bladesand varying wind speeds. The number of blades given is 2 units, 3 units and 4units. The speed of the given wind is 3.3 m / s, 3.5 m / s, 3.7 m / s, and 3.9 m / s.Performance is obtained from the electrical power produced by a generatormounted on the turbine axis. The results showed that the turbine performance wasinfluenced by the number of blades. The highest power in the number of bladeswas 4 units at a wind speed of 3.3 m / s which resulted in electric power of 5.166Watt. The lowest electric power is produced on turbines with a number of units of2 units at a wind speed of 3.3 m / s, which is 3.0173 Watts. The blade is 2 unitsand 3 units, at a wind speed of 3.3 m / s; 3.5 m / s; 3.7 m / s and 3.9 m / s, theelectrical power produced is relatively the same, while in blades 4 units, thedifference in wind speed (3.3 m / s; 3.5 m / s; 3.7 m / s and 3.9 m / s) produce adifference in the electrical power produced
MEMANFAATKAN CONDENSATE HYDROCARBON NATURAL GAS SEBAGAI FUEL GAS DENGAN PENGATURAN KONDISI OPERASI ALAT HEAT EXCHANGER Sulardi Sulardi
INFO-TEKNIK Vol 20, No 2 (2019): INFOTEKNIK VOL. 20 NO. 1 DESEMBER 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i2.7722

Abstract

One of the problems faced in operating the fuel gas system is the loss due to wasting condensate hydrocarbons from the fuel gas system surge drum. The purpose of the study was to determine the factors that cause natural gas condensation problems in the fuel drum supply surge gas and provide an overview of how to overcome the problem with the heat exchanger tool operation method. The method used in the research is the research method used with a case study approach to handling wasted condensate hydrocarbon problems and how to overcome them by maximizing the operation of heat exchanger devices. The expected results from this study are that the removal of hydrocarbon condensate can be prevented and utilized as fuel gas. With the results of this study, it is expected to be an innovation in order to adding value to value creation for the company.
ANALISA PEMANFAATAN BRIKET LIMBAH ARANG KAYU ALABAN DI DESA TAPUK KECAMATAN LIMPASU KABUPATEN HULU SUNGAI TENGAH Muhammad Nizar Ramadhan; Andy Nugraha
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.v21i1.8965

Abstract

The solution to reduce the use of fossil fuels is by utilizing renewable energy such as solar power, wind power, and hydropower, as well as the utilization of other alternative energy derived from biomass. One of alternative energy from biomass that is very potential is briquettes. Tapuk Village, Limpasu Subdistrict, Hulu Sungai Tengah Regency is one of the producers of Alaban wood charcoal, with grade D charcoal in the form of charcoal flakes and is often regarded as waste. This study aims to determine the physical properties of alaban wood charcoal waste briquettes which include water content, ash content, volatile matter content, fixed carbon content, and calorific value, as well as the potential utilization of alaban wood charcoal waste briquettes. so that residents can use Tapuk Village, Limpasu District, Hulu Sungai Tengah Regency as an alternative fuel to substitute kerosene and LPG. The results showed the physical properties of alaban wood charcoal waste briquettes for 3.66 % water content, 3.15 % ash content, 14.31 % volatile matter content, 78.88% fixed carbon content, 6.259.33 cal / gr calorific value. The use of alaban wood charcoal waste briquettes is able to produce consumption costs efficiency of 60% better than the use of LPG and 70% better than the use of kerosene.

Page 17 of 43 | Total Record : 425

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