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All Journal Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Indonesian Journal Of Environmental Science and Technology INSIST (International Series on Interdisciplinary Research) Journal of Ocean, Mechanical and Aerospace -science and engineering- (JOMAse)
Adhy Prayitno, Adhy
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Aerospace Engineering Computer Science & IT Decision Sciences, Operations Research & Management Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering Other

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Journal : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

 1 
Studi Kecermatan Alat Ukur Roundness Tester Machine Produksi Laboratorium Jurusan Teknik Mesin Universitas Riau Dengan Metode Helix Shodikin, Shodikin; Prayitno, Adhy; Arief, Dodi Sofyan
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

measuring clock or Dial indicators is a comperator device. typically used in industrial activities in particular at product deviation, because it has good accuracy. Precision and accuracy is the closeness to the true value, can be defined as the closeness (cloness) between the values read from the measuring instrument to the true value. The use of measuring devices which have high accuracy and good will generate accurate measurement data and vice versa use measuring devices that are not good or accurate, then the results obtained are not accurate. This study aims to determine the accuracy of measuring instruments by varying the motor speed to the drive dial indicator with helix methods, and large roundness deviation (Roundness Tester Machine). The result showed that the roundness deviation for each speed roundness of the lowest value and the highest at speed 0,040 m / s is: MCC = 0.008 mm to 0.124 mm, MZC = 0.008 mm to 0.122 mm, MIC = 0.006 mm to 0.029 mm, and LSC = 0.005 to 0.085 mm. Then to the speed of 0.046 m / s roundness deviation obtained MCC = 0.007 mm to 0,186 mm, MZC = 0.005 mm to 127 mm, MIC = 0.005 mm to 0.121 mm, LSC = 0.005 mm to 0,113 mm, while the speed of 0.071 m / s roundness deviation obtained for MCC = 0.094 mm to 0.611 mm, MZC = 0.047 mm to 0,153 mm, MIC = 0,050 mm to 0.107 mm, LSC = 0.042 mm to 0.111 mm, the speed of 0,040 m / s is closer to the data than the speed of other mandrel, the effect of instrument error is evident from the table 4:20 on four very large positions are not accurate Measure tool is e (mm) = 0.0830 or e (%) = 42.17, and the roundness deviation at speed of 0,040 m/s by the largest outer circle the minimum is 0.124 mm, the inner circle is 0.122 mm maximum, the minimum of a circle area is 0.122, and for the least squares circle is 0.042 mm. The fourth circle of reference is used, then the circle of least squares best used to determine the roundness deviation results in accordance recommended ISO.          Keywords : deviation, helix method, Roundness Tester Machine, speed variation.
Rancang Bangun Rangka Sun Tracking Pada Panel Surya Dinamik Mafiqi, Arif; G, Yogie Rinaldy; Prayitno, Adhy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 6 (2019): Edisi 1 Januari s/d Juni 2019
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

This study aims to design a Sun Tracking frame in dynamic solar panels. The methodology of this research has 4 main steps: (1) Literature Study, (2) Design Concepts, (3) Concept Selection, (4) Frame Making. in this study a Sun Tracking machine designed for solar cells was designed to follow the movement of the sun. The design stages consist of needs analysis, preparation of product technical specifications, design of product concepts to produce alternative product concepts which are then selected concepts to be made. From the form of the concept that will be made, static analysis is carried out on the mechanical components of the Sun Tracking engine. Static analysis is done by means of manual calculation and elemental analysis. Based on the results of the static analysis, the results of the stresses were 8.381 MPa on stem 1, 8.769 MPa on rod 2, 0.5378 MPa on rod 3 and 0.6448 MPa on rod 4. Deformation that occurred was 0.02783 mm at stem 1, 0.03107 mm on stem 2, 0.0003228 mm on stem 3 and 0.0002346 mm on stem 4. Keywords: Sun Tracking, solar cell
Pengujian Kebulatan Hasil Pembubutan Poros Aluminium Pada Lathe Machine Type LZ 350 Menggunakan Alat Ukur Roundness Tester Machine Saputra, Rachman; Arief, Dodi Sofyan; Prayitno, Adhy
Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains Vol 2, No 2 (2015): Wisuda Oktober Tahun 2015
Publisher : Jurnal Online Mahasiswa (JOM) Bidang Teknik dan Sains

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Abstract

Machining process is a manufacturing process in which the object is formed by removing or abolishing most of the material of the object works. Reason used machining process is to obtain accuracy than other processes such as casting process, forming and also to provide a form of the inside of a particular object. This study aimed to obtain the test roundness data of the aluminum shaft using Roundness Tester Machine, process and analyze the test data. This test method 10 points in each axis. The three feeding is used (0.082 mm / rev, 0.114 mm / rev, 0.143 mm / rev) data obtained unanimity the most good at feeding 0.114 mm / rev that is Minimum circumscribed circle 0.045 to 0.229, the Maximum inscribed circle 0,046 to 0,249, Minimum radial zone 0.052 to 0.237, Least Squares Circles 0,024 to 0.134. Based on research data using a lathe turning type LZ 350 Lathe better roundness deviation is second with a feeding shaft 0.114 mm / rev net by a correction factor Roundness Tester Machine is between 0.018 mm to 0.133 mm and the average value of 0.058 mm. The test results obtained are not in accordance with the theory of reference, it should be feeding the lowest (0.082) which has a roundness deviation which was better than feeding 0.114 and 0.143, this can be due to (Humman error) operators put the test center axis or not alignemnt, specify datum turning and lathes Lathe LZ 350 type is not in optimal performance.Keywords: Machining, Roundness, Roundness Tester Machine
Co-Authors Ayunita, Dyna Dodi Sofyan Arief, Dodi Sofyan G, Yogie Rinaldy Mafiqi, Arif Masykuri, Imron Midriem Mirdanies Minarni Shiddiq, Minarni Muftil Badri Muhammad Irvan Nurharsanto, Sigit Saputra, Rachman Shodikin, Shodikin Yantoa, Wahyu Fajar