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ROTOR: JURNAL ILMIAH TEKNIK MESIN
Published by Universitas Jember
ISSN : 1979018x     EISSN : 24600385     DOI : -
Core Subject : Science, Engineering,
Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
ROTOR merupakan jurnal yang diterbitkan oleh Jurusan Teknik Mesin Universitas Jember yang memuat artikel ilmiah dalam bidang Konversi Energi, Design/Perancangan, Teknik Produksi, Material serta bidang lain yang terkait dengan Teknik Mesin. Semua naskah yang diterima ROTOR diterbitkan secara global dalam bentuk elektronik. Hasil penelitian yang diterbitkan dalam jurnal ini diharapkan dapat menambah khasanah pengetahuan di bidang Teknik Mesin serta menjadikan sarana bagi para profesional baik dari dunia usaha, pendidikan, ataupun peneliti untuk menyebarluaskan perkembangan ilmu pengetahuan dan teknologi di bidang Teknik Mesin melalui publikasi hasil penelitian.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 333 Documents
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Pengaruh Variasi Desain Crash Box Pola Origami terhadap Kemampuan Penyerapan Energi Imam Kusyairi; Moch. Agus Choiron; Anindito Purnowidodo
ROTOR Vol 8 No 2 (2015)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (614.395 KB)

Abstract

This study developed crash box design on origami patterns. These typically have got the dents whichserve as pre-folding. Therefore, the collapses modesarepredictable and stable. The geometry variation of crash box comprises four factors, i.e. basin length (c), distance between the basins (b), thickness (t) and number of segments (M). Meanwhile, the design of optimal variations utilized L9 Taguchi and deformas pattern analysis. The method of this study used software finite and the element of crash box modelling consists of three components, e.g. impactor, crashbox, and fixed support. The material used is AA7003-T7 modellingas thebilinear isotropic hardening. Model loading waconveyed 64 km/h on the impactor. The research shows that the response of quality characteristics of energy absorption is the larger the better. The energy absorption respectively covered 1)thickness (t), 2) segment (M), 3) distance between basins (b), and 4) basin length (c).Whereas, the highest energy absorption of the crash box occupied by the origami pattern no. 3 with c = 9 mm, b = 60 mm, t = 2 mm and M = 6,  reaching 7,247,826 J. In fact, the deformation behavior of the model no. 3 tends to have a symmetrical deformation without buckling. Keywords:Crash box, origami, energy absorbed,deformation
PERUBAHAN MASSA DAN NILAI KALOR CHAR DENGAN VARIASI HEATING RATE DAN TEMPERATUR PADA PIROLISIS SERBUK KAYU MAHONI (SWITENIA MACROPHYLLA) Farid Majedi; Widya Wijayanti; Nurkholis Hamidi
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Product pyrolysis process is char, tar and gas. Char important parameters are the mass and caloric value. Therefore, this study discusses the effect of temperature and heating rate due the mass and low heating value. Variations heating rate used was 673 K / h and 1073 K / h.Temperature heatingis varied 523 K, 623 K, 723 K, 773 K and 873 K for each heating rate .The heating temperature is provide by eletric heater with control system (arduino uno system). The measurement is donefor biomass and char mass using measuring cup and measured using mass scale. Bomb calorimeter is used to measure teh low heating value Sawdust mahogany dried powder with temperatures 383-398 K. Sawdust mahogany dry pyrolysis with variations planned. The heating process pyrolysis is taken for 180 minutes using stopwatch.The result show that theheating rate and temperatur has effect due mass char product.The results show that char mass tend to decrease due to heating rate and temperature increasing.. Low heating value tend to increase due to heating rate and temperature increasing. Keywords: Pyrolysis, sawdust mahogany, heating rate, temperature, mass,low heating value
PRODUKSI BIODIESEL DARI MINYAK JELANTAH MENGGUNAKAN KATALIS HETEROGEN CANGKANG BEKICOT (ACHATINA FULICA) DENGAN METODE PENCUCIAN DRY WASHING Zainul Arifin; Bayu Rudiyanto; Yuana Susmiati
ROTOR Vol 9 No 2 (2016)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Biodiesel is an alternative fuel from renewable sources with the composition of fatty acids from vegetable oils or animal oils. Biodiesel production from used cooking oil was counducted to determine the effect of basa heterogen catalyst of snail shell that used on a transesterification reaction with dry washing method for the yield and quality of biodiesel based on the quality standard of Biodiesel according to SNI No. 04 – 7182-2006. The study was designed using Rancang Acak Lengkap (RAL) with two factors, the concentration of catalyst (K): (6, 7 and 8%) and the concentration of magnesium silicate (M): (1 and 1.5%). The parameters analyzed include biodiesel yield, viscosity, density, acid number, flash point, cloud point , water content and heat value. The results showed that the highest yield of 63% was obtained from treatment of the catalyst concentration 6% and magnesium silicate 1% with the quality of biodiesel: viscosity of 5.692 mm2 / s, density of 867.8 kg / m3, the number of acid 0.605 Mg-KOH/Kg, a flash point of 160 oC, 12 oC cloud point, the water content of 0.08% and a heat value of 41.379 MJ / Kg. Keywords : Biodiesel, Catalyst Heterogenous, Snail Shell, Dry Washing
STUDI EKSPERIMEN BENTUK KACA PENUTUP UNTUK MENINGKATKAN PRODUKTIFITAS DAN EFISIENSI SOLAR STILL Nova Risdiyanto Ismail; Andi Hardianto
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Based on the previous research, it’s needed a research on the development of solar distillation model. The development of a concrete absorbed plate with fin has been conducted and resulted on improving productivity and efficiency of solar still. The development is continued by making a model using the glass covered model with roof shape and V. Experimental method is used in this work. Absorbent plate from concrete with fins models and some gravel are used in this solar still research. The concrete composition is determined by two parts of iron sand and one part of PCC cement. The cover glass design is determined by roof model, V model and conventional model (flat model). Water volume is designed as varied variables. The results show that V model can increase the productivity of freshwater and efficiency of the solar still compared with roof model and conventional model under different water volume. The absorber plate temperature, water temperature and cover glass temperature satisfy the solar radiation pattern. Keywords: solar distillation, cover glass shape, water volume
METODE STEREO VISION DENGAN KAMERA CMOSUNTUK PENGUKURAN JARAK Asmar Finali
ROTOR 2016: ROTOR Special Edition
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

Excess image sensor digital camera is not just a picture taker or produce video, can be also as a measurement tool. Through the method of image processing, can be processed input image or an object taken from the camera. Image processing can be thresholding, edge detection and template matching. Required sensing with two images obtained from the stereo camera simultaneously or stereo vision. The camera used has properties or specifications are identical. OpenCV was contribute to image processing, object interpretation and also the calibration process. Calibration function to search for intrinsic and extrinsic parameters of the camera. Research uses a solid object in the form of balls of various sizes and colors. Epipolar and stereoscopic as the method to be used, because in previous studies, it is very suitable for processing images with color segmentation. As for digital image processing using the method thresholding. Research results obtained, that the object of pingpong ball motionless when lighting using sunlight has RMSE (root mean square error) of 2.64% while the value of a tennis ball RMSE is 2.53%. Research by lighting using indoor lighting, RMSE was 1.03% pingpong ball, tennis ball RMSE of 2.25%. While on the moving object, either RMSE pingpong ball or a tennis ball, its value is greater than when the motionless object. Measuring tool using a stereo camera capable of detecting targets up to a distance of 300 cm, but at a distance of 200 cm level of confidence does not the 95%. Lighting greatly affect the measurement results CMOS camera, because scalar target color easily changed. Keyword: image processing, thresholding, OpenCV, epipolar, stereo cameras, stereoscopic
ORIENTASI SUDUT LILITAN BENANG KATUN TERHADAP KEKUATAN TARIK PADA PIPA KOMPOSIT FILAMENT WINDING Ardian Dwi Saputra; M. Fahrur Rozy H; Agus Triono; Imam Sholahuddin
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (417.642 KB) | DOI: 10.19184/rotor.v10i1.5138

Abstract

Cotton fibers currently use in many industries textiles, easy gotten in the market, and a cheap price. Using of fiber would be able to solve the environtment problems, reduce the metal using, particularly in the oil and gas industries. In this study, composite pipes are made by cotton fibers as reinforcement, particles of montmorillonite as filler, and unsaturated polyester as matrix. From that consideration this study was conducted to obtain that analysis of tensile strength composite cotton fibers. With the pattern of variation woven fiber direction angle towards the corner fibers 450, 550, 650, 750, and 850. From the test results the highest tensile strength values is obtained by a composite pipe with fiber direction angle of 850. The test results showed that the tensile strength of the cotton fiber reinforced composite pipe with direction of 450 angle fiber is 3.76 MPa, for direction of 550 angle fiber tensile strength is 1.28 MPa, for direction of 650 angle fiber tensile strength is 10.691 Mpa, for direction of 750 angle fiber tensile strength is 14.465 Mpa, and for direction of 850 angle fiber tensile strength 28.617 MPa. Keywords: Cotton fiber, unsaturated polyester, filament winding method, montmorillonite, Tensile Strength
ANALISIS PARAMETER INJECTION MOLDING TERHADAP WAKTU SIKLUS DAN CACAT FLASH PRODUK TUTUP BOTOL 180 ML MENGGUNAKAN METODE TAGUCHI Andika Wahyu Prasanko; Dwi Djumhariyanto; Agus Triono
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (543.639 KB) | DOI: 10.19184/rotor.v10i1.5147

Abstract

At present plastic becomes inseparable from human life especially in the food and beverage industry. One of the methods used in the manufacturing process of plastic products is injection molding. Injection molding is one of manufacturing technique that consists of a series of cyclical processes and is used to produce thermoplastic materials. The effect of the combination of process parameters impact on the product results such as the quantity and quality of the product, the non-conformity of the parameters causes the production to be not optimal. One method that can be used for optimization is the taguchi method. The taguchi method is a set of special matrices called orthoghonal arrays that are used as reference in the determination combination of parameters and level values. The purpose of this research is to determine the optimal cycle time and net of the product on the process of making 180 ml bottle cap but by minimizing flash defects. The method used in this phase is ANOVA, and the calculation of taguchi method by using minitab 16 software. From the result of the research, the result of optimal condition is combination injection pressure 1320 bar, injection speed 50 mm/s, holding pressure 300 bar, and nozzle temperature 255oC produces a cycle time value of 15.72 seconds and netto 3.56 grams. This result is better than the setting of the company that produces 16.66 seconds cycle time and entered in the net range of 4 ± 0.5 grams resulting in an increase in production of 5.97%. While with combination of injection pressure 1280 bar, injection speed 50 mm / s, holding pressure 300 bar, and nozzle temperature 245oC resulted in fewer number of flash defects compared to company setting that is 12 units from 80 units of sample. Keywords: flash deffect, injection molding, taguchi method, cycle time
Front Section Fahrur Rozy
ROTOR Vol 10 No 1 (2017)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

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Abstract

ANALISIS TEGANGAN PADA ELBOW PIPE SA 123 Gr.T22 DI SHELL AND TUBE HEAT EXCHANGER Abdul Haris Siregar; Hary Sutjahjono; Agus Triono
ROTOR Vol 12 No 1 (2019)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (284.396 KB) | DOI: 10.19184/rotor.v12i1.15293

Abstract

Heat exchanger is a system used to transfer heat between fluids. The most cases of heat exchanger failure is leakage pipe. This study aims to see the effect of increasing the radius of the elbow pipe in the shell and tube heat exchanger on the stress due to internal and external pressure. The research using ANSYS 15 at elbow pipe radius 40 mm, 51 mm and 62 mm with internal pressure 20.4 MPa and external pressure 2.04 MPa. Obtained maximum results occur in 40 mm radius elbow pipe of 81,528 MPa and minimum result occurs in 62 mm of 76,212 MPa. The stress that occurs in all elbow pipe can be said safe because the stress value is still under the pipe material yield point.
ANALISA RSM (RESPONSE SURFACE METHODOLOGY) DENGAN VARIASI WIRESPEED, INTERPULSE, DAN ARUS TERHADAP MATERIAL REMOVAL RATE DAN KEKASARAN PERMUKAAN PADA PROSES WIRE - EDM Arif Efendi
ROTOR Vol 12 No 2 (2019)
Publisher : Jurusan Teknik Mesin Fakultas Teknik Universitas Jember

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (278.598 KB) | DOI: 10.19184/rotor.v12i2.16448

Abstract

ABSTRACT In this era, the machining process has been very advanced wich is equipped with advanced technologies. The impact of the machining process used to develop and increase quality and quantity product produce. Machining process wire – EDM (Wire Cutting Electrical Discharge Machining) is one of the non – conventional machining process wich is commonly used in die – mold, disk brake, punch, and cutting tools. The speed of MRR (Material Removal Rate) and the smoothness of a surface has a very important role in a product wich concerns lubrication, wear, friction and resistance problems. Based on the problem, a study was research for find out what variables affetc the response variable. From the result of the study it is known that the current and interpulse affected the MRR, and the current, interpulse, and wirespeed also affect surface roughness. With the RSM (Response Surface Methode) methode optimum result for MRR the fasted 64,5688 mm3/minutes and the surface roughness smoothest 5,2391 µm with the combination variable current is 8 amp, interpulse, 7 µs, and wirespeed 5 mm/s. Keywords: Wire – EDM, Response Surface Methode (RSM), Material Removal Rate (MRR), surface roughness

Page 27 of 34 | Total Record : 333

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