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PENGARUH GERAK MAKAN DAN KECEPATAN POTONG TERHADAP KEKASARAN PERMUKAAN BAJA HQ 705 PADA PROSES PEMBUBUTAN Ismet Eka Putra; Agus Wendi Syaputra
Jurnal Teknik Mesin (JTM) Vol 5, No 1 (2015)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (86.943 KB)

Quality products are obtained from the good machining process. Surface roughness is either aberrations caused by the cutting conditions of the machining process. HQ 705 is a mixture of hardened steel machining with high quality used in gear, shaft engines, and other machined components. It so conducted experiments to analyze the effect of feeding and cutting speed of motion of the surface roughness of the steel HQ 705 at the turning process. To determine the surface roughness at experiments using surface roughness tester. Experiments conducted at varying cutting speed are 40 m / min, 60 m / min, and 80 m / min. The cutting speed is set at spindle rotation 740 RPM, 900 RPM and 1230 RPM. Turning at motion feeding variated 0.05 mm / r and 0.22 mm / r. Depth of feeding made of 1 mm for any specimen. The experiment is obtained at surface roughness of motion feeding 0.05 mm / r obtained roughness value of 1.43 μm with a cutting speed of 77.28 m / min, at motion feeding 0.22 mm / r obtained roughness values of 4.296 μm with cutting speed of 46.50 m / min. HQ 705 with a conventional turning obtained roughness value is normal, at motion feeding 0.05 mm/r and depth of cut of 1 mm.

ANALISA PENGARUH BEBAN PENGEREMAN DAN VARIASI MERK KAMPAS REM TERHADAP KEAUSAN KAMPAS REM Ismet Eka Putra; Jecky Agusti
Rang Teknik Journal Vol 3, No 1 (2020): Vol. 3 No. 1 Januari 2020
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

The level of use of motor vehicles is increasing every year and will cause a high need for brake canvas. So we need a brake canvas that has a level of wear as small as the original canvas. Many brake canvas manufacturers introduce brake canvas with different brands such as the C and W brands, the brand is no less good quality with Original. The purpose of this test is to find out how much the difference in wear value between the original Y brake canvas with the C and W brands when load variations are given. So get a wear value with the Y original brand: the first test with a load of 1.5 kg and a wear value of 2.82 gr/mm2.second, in the second test with a load of 2 kg and a wear value of 6.07 gr/mm2.second, in the third test with a load of 2.5 kg and a value of 6.32 gr/mm2 second wear. With the C brand: the first test with a load of 1.5 kg and a wear value of 5.99 gr/mm2.second, in the second test with a load of 2 kg and a wear value of 3.74 gr/mm2.second, in the third test with a load of 2,5 kg and wear value 7.51 gr/mm2.second. With the W brand: the first test with a load of 1.5 kg and a wear value of 3.76 gr/mm2.second, in the second test with a load of 2 kg and a wear value of 5.28 gr/mm2.second, in the third test with a load of 2,5 kg and a wear value of 6.98 gr/mm2 seconds. So, from the results of tests conducted can be the wear values of each brake canvas and with the existing graphs show that the brake canvas of the C and W brands are also no less good quality with the Y Original brand.

PENGARUH PENAMBAHAN ZAT ADITIF TERHADAP KONSUMSI BAHAN BAKAR PADA MOTOR BAKAR BENSIN SUZUKI 4-TAK DOHC (16 HP) Ismet Eka Putra; Vikky Ilham
Rang Teknik Journal Vol 2, No 2 (2019): Vol. 2 No. 2 Juni 2019
Publisher : Fakultas Teknik Universitas Muhammadiyah Sumatera Barat

The level of motorized vehicle use is increasing every year and will lead to high fuel consumption. Then a vehicle that has good performance and minimum fuel consumption is needed. The government introduced a new fuel, pertalite, which has better fuel quality than premium. Additive substances are ingredients that are added to motorized fuel which are useful for increasing engine performance ranging from durability, acceleration to engine power. The purpose of this test is to find out how much fuel is used when testing braking, how much fueling has been mixed with additives when braking loads occur, analyzing the reduction of fuel mixed with additives and without additives mixed. So that the resulting fuel composition without using additives reaches max torque 5,488 Joules, power 2010.4 Watts, and mass flow rate 0,000082 kg / s with fuel consumption 0,4 l /hr, from substanceless testing additives and using the most maximal additives with a time of 120 seconds, 7000 rpm and a load of 2 kg, a comparison of the reduced use of fuel is 0.06 l / h. The fuel composition using additives reaches max torque 5.488 Joules, power 2010.4 Watts, and mass flow rate 0.000071 kg / s with fuelconsumption 0.36 l / hr. Testing with additives as a mixture of fuels in certain compositions can improve engine efficiency which has a low mass flow rate, but is proportional to the torque and power produced. Based on the testing and analysis that has been done, the best mixture composition for pertalite is 1: 1.

The Effect of Circulation of 0.5% HCL Solution On the Corrosion Rate of Low Carbon Steel Ismet Eka Putra; Hasbi Ramdani
Jurnal Teknik Mesin Vol 11 No 1 (2021): Jurnal Teknik Mesin Vol.11 No.1 April 2021
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Corrosion is usually called rusting. Corrosion in low carbon steel is carried out by the circulation method and without circulation. The specimens were placed in 0.5% HCl solution of 3 specimens in 1 vessel. The test specimens totaled 27 specimens in 3 vessels. In this study, low carbon steel immersion was carried out with circulation of 1200 L / H and 800 L / H and also without circulation with immersion times of 5, 10 and 15 days. The highest corrosion rate was obtained in low carbon steel soaked in 0.5% HCl for 15 days with a circulation of 1200 L / H which is 0.07357 mpy. The lowest corrosion rate was obtained in low carbon steel soaked in 0.5% HCl for 5 days without circulation, which is 0.02681 mpy.

FRETTING PADA SELONGSONG (SHAFT SLEEVE) POMPA SENTRIFUGAL KAPASITAS 900 m3 /jam di PDAM KOTA PADANG Ismet Eka Putra
Jurnal Teknik Mesin Vol 1 No 1 (2011): Jurnal Teknik Mesin Vol.1 No.1 October 2011
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Bahan selongsong terbuat dari perunggu (bronze) dengan kandungan Lead dan Tin yang tinggi, termasuk dalam kategori ASTM B584, UNS C93200, memiliki sifat mampu mesin yang baik, kekerasan yang baik, ketahanan terhadap keausan yang baik. Selongsong mengalami keausan berupa lekukan-lekukan yang dalam sehingga terjadinya kebocoran yang tidak diizinkan, yang menyebabkan turunnya daya pompa dan berpengaruh kepada penurunan kapasitas pompa sentrifugal di Water Intake PDAM Kampung Koto Kota Padang – Sumatera Barat. Untuk mengetahui penyebab utama kerusakan sebagai upaya pencegahan kerusakan serupa tidak terulang kembali maka dilakukan serangkaian pengujian meliputi pengujian visual/ makro, pengujian metalografi dengan mikroskop optik, pengujian kekerasan dengan brinnel hardness test, dan pengujian komposisi kimia menggunakan optical emission spectrometry. Dari hasil pengujian diketahui bahwa telah terjadi keausan yang signifikan pada sisi permukaan area penerima beban yang menyebabkan tebal selongsong berkurang dan terlihat adanya lekukan-lekukan yang dalam. Fenomena ini mengarah kepada terjadinya fretting yaitu terbentuknya kerusakan berupa lekukan menggaris sebesar bidang yang bersentuhan dengan gland packing. Akibat gesekan, lapisan pelindung logam menjadi terkelupas oleh gland packing, tetapi logam secara alamiah berusaha kembali membentuk lapisan pelindung untuk melindungi material dasarnya. Proses terkelupas dan terbentuk kembali yang berulang inilah yang membuat lekukan-lekukan menjadi terlihat jelas pada selongsong. Penanggulangan dari permasalahan tersebut dapat diupayakan dengan memperbaiki sistem pendistribusian pelumas selongsong dan gland packing.

The Effect of Circulation of 3% HCL Solution On the Corrosion Rate of Aluminum Ismet Eka Putra; Teguh Burhanuddin
Jurnal Teknik Mesin Vol 10 No 2 (2020): Jurnal Teknik Mesin Vol.10 No.2 October 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i2.114-117

Corrosion is usually called rusting. Corrosion to aluminum is carried out by circulating and non-circulating methods. The specimens were placed in 3% HCl solution, each with 3 specimens in one vessel. There are 9 specimens in 3 vessels. In this study, aluminum was immersed with a circulation of 385 L/hour and 432 L/hour and also without circulation with immersion time for 4 days. The highest corrosion rate was obtained in aluminum soaked in 3% HCl for 4 days with a circulation of 432 L / hour, 0.5215 Mpy. The lowest corrosion rate was obtained for aluminum immersed in 3% HCl for 4 days without circulation, 0.1830 Mpy.

Modal Analysis of Free-Inverted Wilson Tennis Racket with 1st Type and 2nd Type of Damper Rozi Saferi; Asmara Yanto; Ismet Eka Putra
Jurnal Teknik Mesin Vol 6 No 2 (2016): Jurnal Teknik Mesin Vol.6 No.2 October 2016
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2016.v6.i2.99-103

One way that can be used to analyze vibration in structures is the modal method of analysis. With this method vibration can be measured when the structure is working, so get the form of vibration mode and vibration values with different frequency levels. If the frequency of the structure in operation is known, then the structure can be controlled so that it does not work on its private frequency, so that the vibrations that occur in the structure are at a safe level. The objective of this research is to know the mechanism of reconstruction of disturbance force on tennis racket structure that vibrates and determines the personal frequency through the test. Then determine the time-frames style graph. In testing, the Wilson brand test racket was given a type 1 and type 2 damper with a weight of 320 grams and a 697mm long vertical hanging with a free-to-pedestal condition. After the software was run, an excitation style with impact hammer was applied to the top of the racket. Measurement of response is done by recording FRF (frequency domain) and coherence graph. The sampling results are stored in * .txt extensioned files and processed with microsoft excel to get real FRF and imaginary FRF graphics. The test is done several times by varying the accelerometer position of 8 points and 2 types of silencer. From the capital test the analysis of the specimen is hung freely with the silencer, then obtained the personal frequency of the test racket with a lower silencer than the personal frequency of the system without damper with a difference of 2 Hz. The three lowest vibration modes of the free-hanging system of the experimental results are the first mode of a half-wave graph forming a peak, the second mode being a one-wave graph forming a single valley peak, and the third mode being a one-and-a-half wave graph of the two valleys. The damping of the test structure is different at each test point and at any given frequency range.

The Effect of Rambutan’s Leaf Extract Inhibitor on Corrosion Rate on Cast Iron Block Car Sedan Nissan in HCl Solution 1% Ismet Eka Putra; Pren Tanjung
Jurnal Teknik Mesin Vol 10 No 1 (2020): Jurnal Teknik Mesin Vol.10 No.1 April 2020
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2020.v10.i1.41-45

Corrosion in cast iron can be overcome by rambutan counter measures (Nepheliumlappaceum.L). The object of the study which is placed in 1% HCl solution each of 3 specimens in 1 vessel. 12 specimens in 4 vessels. In this study, soaking iron cast iron car block Sedan Nissan without inhibitor and the variation of inhibitor 5%, 10%, and 15% with immersion time 5, 10, and 15 days. The solution is coincides with 0.095 m3/hr of passage in a vessel with a volume of 1% 900 ml of HCl. The highest corrosion rate in cast iron soaked in 1% HCl without using rambutan leaf extract and immersion time of 15 days is 0,075054 mpy. The lowest corrosion rate in cast iron soaked in 1% HCl solution using 15% rambutan leaf extract and a 15 day immersion time of 0,025863 mpy.

PENGARUH GERAK MAKAN DAN KECEPATAN POTONG TERHADAP KEKASARAN PERMUKAAN BAJA HQ 705 PADA PROSES PEMBUBUTAN Ismet Eka Putra; Agus Wendi Syaputra
Jurnal Teknik Mesin Vol 5 No 1 (2015): Jurnal Teknik Mesin Vol.5 No.1 April 2015
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2015.v5.i1.25-28

Quality products are obtained from the good machining process. Surface roughness is either aberrations caused by the cutting conditions of the machining process. HQ 705 is a mixture of hardened steel machining with high quality used in gear, shaft engines, and other machined components. It so conducted experiments to analyze the effect of feeding and cutting speed of motion of the surface roughness of the steel HQ 705 at the turning process. To determine the surface roughness at experiments using surface roughness tester. Experiments conducted at varying cutting speed are 40 m / min, 60 m / min, and 80 m / min. The cutting speed is set at spindle rotation 740 RPM, 900 RPM and 1230 RPM. Turning at motion feeding variated 0.05 mm / r and 0.22 mm / r. Depth of feeding made of 1 mm for any specimen. The experiment is obtained at surface roughness of motion feeding 0.05 mm / r obtained roughness value of 1.43 μm with a cutting speed of 77.28 m / min, at motion feeding 0.22 mm / r obtained roughness values of 4.296 μm with cutting speed of 46.50 m / min. HQ 705 with a conventional turning obtained roughness value is normal, at motion feeding 0.05 mm/r and depth of cut of 1 mm.

ANALISA EFISIENSI ALAT PENGERING TENAGA SURYA TIPE TEROWONG BERBANTUKAN KIPAS ANGIN PADA PROSES PENGERINGAN BIJI KOPI Ismet Eka Putra; Pitri Hadi
Jurnal Teknik Mesin Vol 3 No 2 (2013): Jurnal Teknik Mesin Vol.3 No.2 October 2013
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2013.v3.i2.22-25

Coffee is a commodity of Indonesian plantations which accounts considerable for foreign exchange. Besides it, this effort involves the agricultural labor that quite high, which is more than 96% of Indonesian coffee plantations is managed traditionally by rural society, that are takes a long time to do it. To overcome these problems, so we designed and created a dryer that is solar dryers tunnel type. The purpose of this research was to determine the efficiency of the dryer. The dryer consists of spaces dryer, Solar collectors and ventilator. These dryers operate using solar energy and wind energy. In this research, the coffee beans are dried with initial moisture content of 59% as much as 29 kg. From results of this research obtained the efficiency of solar dryers tunnel type maximum 37%. The solar dryers tunnel type assisted fan, coffee beans dried until moisture content of 11% during 16 hours (2 days).

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