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Reaktom : Rekayasa Keteknikan dan Optimasi
Published by Universitas Hasyim Asy'ari
ISSN : -     EISSN : 25484095     DOI : https://doi.org/10.33752/reaktom
Core Subject : Engineering,
Automotive Engineering Civil Engineering, Building, Construction & Architecture Electrical & Electronics Engineering Engineering
Reaktom : Rekayasa Keteknikan dan Optimasi is open access and peer-reviewed journal, published by Universitas Hasyim Asy ari, Indonesia to disseminate research results from scientists and practitioners in Engineering and Science fields. Aim and Scope: Electrical Engineering: robotics, control system, microcontroller application, telecommunication, electronics, power electronics, power engineering, power distribution, etc. Mechanical Engineering: material engineering, production, automotive, energy conversion, aerodynamic, etc. Industrial Engineering: chemical engineering, physic engineering, instrumentation and control, industrial management, manufacture, etc. Civil Engineering: structure engineering, hydrology, geotechnical, construction management, etc. (but not limited to)
Arjuna Subject : Teknik (semua kategori) - Tenik Industri dan Manufaktur
Articles 11 Documents
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Search results for , issue "Vol 3 No 1 (2018): Mei 2018" : 11 Documents clear
ANALISA PERBANDINGAN KEKUATAN CETAKAN PENGECORAN DUDUKAN SHOCK BREAKER SEPEDA MOTOR UKURAN 70 ×30 ×30 mm Muchammad Rizza
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Aluminium merupakan logam non-ferrous yang paling banyak digunakan di dunia, dengan pemakaian tahunan sekitar 24 juta ton. Oleh karena itu membutuhkan cetakan yang kuat dan tahan lama dalam industri pengecoran logam. Tujuan dari penelitianini adalah untuk mengetahui pengaruh penggunaan material baja St42 terhadap kekuatan tarik dan modulus elastisitas pada cetakan pengecoran aluminium dudukan shockbreakersepeda motor ukuran 70 x 30 x 30 mm dengan variabel pemanasan (Heat Treatment) pada bagian coredan cavity pada temperatur 650°C dan 1020°C. Cara melakukan pembuatan yang meliputi pembuatan pengefraisan, pengeboran, perlakuan panas, penggerindaan dan kerja bangku. Hasil berupa pencetak alumunium dengan produk dudukan shock breakersepeda motor ukuran 70x30x30 mm serta rumusan yang telah disebutkan dengan mengetahui perbandingan kekuatan cetakan. Metode penelitian yang dilakukan adalah dengan penelitian eksperimen merupakan penelitianyang dilakukan untuk mengetahui pengaruh pemberian suatu treatment atau perlakuan terhadap subjek penelitian untukmengetahui jenis penelitiannya, mempersiapkan alat dan bahan ,diagram alir, teknik pengumpulan bahan, variabel penelitian, dan teknik analisis data dari metode penelitian hasilnya adalah data uji tarik yang kemudian dianalisa tegangan tarik maksimum, regangan dan modulus elastisitas.Hasil dari analisa tersebut adalah kekuatan tarik maksimum spesimen het treatment dengan temperatur 650°C = 450.4 N dan temperatur 1050°C = 469.2 N dan modulus elastisitas pada temperatur 650°C = 3217.14 N/dan temperatur 1050°C = 2234.24 N/. Sehingga spesimen yang di heat treatmentdengan tempertur 650°C memiliki kekuatan tarik lebih rendah dari spesimen yang di heat treatmentdengan temperatur 1050°C, dan spesimen yang di heat treatment dengan temperatur 650°C memiliki modulus elastisitas yang lebih besar dari pada spesiment yang di heat treatmentdengan temperatur 1050°C hal ini disebabkan karena adanya perbedaan temperatur heat treatment sehingga mempengaruhi struktur kimia pada spesimen tersebut.
ANALISA KEKUATAN TARIK PADUAN ALUMINIUM DENGAN SILIKON PADA DUDUKAN SHOCKBREAKERUKURAN 70 X 30 X 30 mm Risalah Zakaria
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Shockbreaker holder is an additional component in the vehicle that serves as enhancer to fit the posture or as desired from the user.Shockbreaker stands are made from aluminum base material combined with other alloys to improve the mechanical properties of aluminum. So it is necessary to do research using experimental method there is Aluminum-Silicon alloy.The purpose of this researchis to know the tensile strength and strain value on aluminium castings with silicon on shockbreaker stand with variation of silicon 5%, 10%, and 15%. The results of this study showed that tensile strength and strain obtained from 5% silicon alloys were 91.64 MPa and 0.0035%. While the tensile strength and strain obtained from 10% silicon alloys were 109.06 MPa and 0.0038%. While the tensile strenght and strain obtained from 15% silicon alloys are 135.56 MPa and 0.0049%. The best result of aluminium siliconalloy with 15% addition of silicon obtained tensile strength is 135.56 MPa and strain value is 0.0049%
ANALISA KEKUATAN TARIK PADUAN ALUMINIUM DENGAN MAGNESIUM PADA DUDUKAN SHOCKBREAKERUKURAN 70 X 30 X 30 mm Zamah Syari
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Aluminium is a Non-Ferrous metal that is widely used in casting process, aluminium in pure state has poor mechanical properties, so it is necessary to add other alloying elements to improve its mechanical properties. so it is necessary to do research usingeksperimental method on aluminium-magnesium. The purpose of the research is to know the stress and strain with tensile test on aluminium-magnesium alloy to be used as material on motorbike shockbreaker holder with addition magnesium 3%, 5% and 7%. Tensiletest results show the mecanical properties of aluminium with The addition of magnesium elementer. The stress values of alloy of Al-Mg 3%, AlMg 5% and Al-Mg 7% were 161,15 MPa, 142,04 MPa And 91, MPa and 91,28 MPa respectively. And value of strain on alloys Al-Mg 3%, Al-Mg 5% and 7% is 0,05, 0,03 and 0,02. The stress and strain values can be seen diffferently on each test, The stress and strain values will decrease.
DIVERSIFIKASI MIE SEHAT DENGAN BERBAHAN BAKUTEPUNG TERIGU DAN CAMPURAN TEPUNG BEKATUL Ali Hasbi Ramadani,
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Noodles made from wheat flour and rice bran are healthy foodsthat can be developed as a form of new business in the field of culinary, so as to strengthen the economic resilience of the community. The purpose of this researchwas to determine the physical characteristics of healthy noodles made from raw wheat flour and rice bran flour mixture,as well as taste trials on customer satisfaction. The research method used in this study using the experimental method which is thentested to 40 respondents. The results show that the most feasible in the production is 95% flour mixture and 5% Bekatul flour get the result of soft and soft dough as well as ordinary noodles, when inserted into the roll machine and noodle printers are good results and can be produced well, and when cooked and in add complementary almost no different from the noodle without rice bran, so it is feasible for the mass production. From the aspect kepusan customers generate 82.5% very satisfied, 17.5% Satisfied, 0% less satisfied, 0% not satisfied.
Kinerja Pencampuran Pewarna Kunyit dan Indigofera dengan Molaritas Indigo/Kunyit 0,32M/0,23M sebagai Sensitizer Pada Dye Sensitized Solar Cells(DSSCC) Basuki
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

The research is to examine the performance of solar cell with turmeric andindigo dye. Turmeric dye is obtained by extraction method while the indigo dye is obtained by fermentation method from indigofera plants. Indigofera and turmeric dyes were treated by mixing dye with indigo / turmeric molarity 0.32M / 0.23M. Characteristics of the dye are studied. The natural dye was tested with absorbance test, FTIR and cyclic voltammetry. The dye mixing was then applied to dye-sensitized solar cells (DSSCs) and then DSSC performance was tested at 0 hours. The UV-Vis results showed that the dye absorption with indigo / turmeric molarity was 0.32M / 0.23M with an absorption peak of 375 -525 nm. From the FTIR test, the dyeing function mixing group with indigo / turmeric molarity of 0.32M / 0.23M is -OH, C = Caromatic, alkane C-H, amina C-N.The result of cyclic voltammetry test showed that mixing dye with indigo / turmeric molarity 0,32M / 0,23M band gap 0,745 eV. Result from this research of solar cellefficiency is 0.038%.
STRATEGI PENANGANAN PEDAGANG KAKI LIMA DI MOJOAGUNG JOMBANG Meriana Wahyu Nugroho
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

The existence of PKL around Mojoagung Jombang fieldis considered to be the cause of traffic congestion and disturb the beauty of the city. This study aims to describe the existing area of Mojoagung jombang fieldwith the activity of street hawkers in it, as well as making the design of structuring street vendors in the field MojoagungJombang. This study uses Analytical Hierarchy Process approach, the formulation of PKL's next handling strategy described in the implementation of programs with attention to stakeholders' interests can be determined based on priority scale. The results obtained from the AHP approach, among others: criteria of spatial factors have the highest importance of importance that is with the weight of 0.359 (35.9%) and then followed by public order factor with the weight of 0.226 (22.6%), economic factor with weight 0.178 (17,8%), social factor with weight 0,148 (14,8%) and last environmental factor with weight of 0,089 (8,9%).
PENGGUNAAN GRAF DALAM PENJADWALANPERKULIAHANTEKNIK ELEKTRO UNIVERSITAS HASYIM ASY’ARI Nanndo Yannuansa
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Pembuatan jadwal merupakan salah satu kegiatan tertentu yang wajib dilakukan sebelum aktivitas dimulai, dan salah satu metode pembuatan jadwal bisa menggunakan metode pewarnaan graf. Pewarnaan graf merupakan metode pemberian warna yang dipresentasikan sebagai bilangan terurut mulai 1 ataudengan menggunakan warna-warna tertentu pada suatu objek di graf. Objek tersebut dapat berupa simpul, sisi dan wilayah ataupun kombinasi ketiganya. Pewarnaan sisi sebuah graf merupakan teknik mewarnai pada garis (edge)sehunggasetiap garis(edge)yang betemupadasuatutitik yang sama berbeda warna.Penulisan ini lebih memfokuskan dalam membahas penerapan pewarnaan sisi untuk mendeteksi masalah penjadwalan kuliah.
PENGARUH PERIKLANAN PRODUK MARASAKE SARI BUBUKKEDELAI INSTAN TERHADAP KEPUTUSAN PEMBELIANWARGA JAMAAH TATANAN WAHYU (JATAYU)PADA UPT. MAKARTI POMOSDA Nur Hanifah
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

In companies large and small, advertising is very important, especially to attract consumers to make purchasing decisions of the company's products and retain the company's customers so that in this case advertising becomes one of the spearhead of marketing for the company. With this researcher want to know how big influence of product advertisement to consumer purchase decision. In conducting this research, researchers used quantitative research methods. The sample used is accidental sampling on the citizens of the Jamaah Revelation Order (JATAYU). The data collection technique is done through the distribution of questionnaires. Testing Likert scale to determine the effect of advertising on consumer purchasing decisions. By using Spearman Rank coefficient obtained rs value of 0.071. This shows that the value of rs has a very weak relationship between variable X (advertising) with variable Y (purchase decision). The magnitude kd of 0.5% of the rest of 99.5% influenced by other variables that are not measured in this study. Based on the calculation of t test analysis with significance level of 5%, obtained t arithmetic of 0.087 and t table of 0.1510. This shows that t arithmetic <t table, so Ho accepted means there is no significant influence between variables X (advertising) with variable Y (purchase decision).
STRATEGI PENGEMBANGAN USAHA SAYURAN KANGKUNG ORGANIK MENGGUNAKAN METODE ANALISIS SWOT Achmad Syaichu
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Abusiness shouldhave a mature planning and strategy.The right strategy certainly has a great influence in the development of the business itself.Thisresearchtried to examine the strategy of developingorganic vegetable business in POMOSDAusingSWOT analysis.The result of the research is based on the position in IE matrix, farmer group is in quadrant V. The core of strategy that can be applied by farmer group Gapoktan Japo is strategy of hold and maintain (Keeping and Maintain), through strategy of market penetration and product development. The results of SWOT analysis obtained a) S-O is maintain and improve service to consumers and expand distribution and marketing. b) W-O is a ensuring product certification and improving data archiving and exploiting opportunities. c) S-T is keepingand maintaining existing marketing areas. d) W-T is establishing cooperation (net working) with companies to look forword and obtain information market organic farming.
Penyusunan Target Penjualan dengan Menggunakan Metode Autoregresive Integrated Moving Average(ARIMA)Box Jenkins Sumarsono
Reaktom : Rekayasa Keteknikan dan Optimasi Vol 3 No 1 (2018): Mei 2018
Publisher : Universitas Hasyim Asy'ari

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Abstract

Market conditions are becoming increasingly competitive in order to exist in the midst of market competition without exception must improve the right business strategy by developing a strategy plan of planning and development, especially those related to the market. Marketing Department, especially the sales department has an important role as the spearhead of the company in competing in the market. One of the major sales plans is to make sales targets. It is expected that the sales target is a realistic figure with the current market condition and certainly still consider the growth aspect in the target year based on the previous year.The method used in the preparation of sales targets using the method Autorgresive Integrated Moving Average (ARIMA)Box Jenkins. The results of the analysis obtained sales predictions for 52 weeks ahead. And considering the annual growth factor of 20% obtained value of sales target 52 weeks ahead. With the measured sales target value, the sales target value becomes realistic and the achievement of the sales target will be better realized. Furthermore, the marketing can develop a strategy of achieving the target with more clearly and directed by considering the condition of people's purchasing power, the level of brand competition in the year of prediction and team readiness and cost expenses.

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