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All Journal International Journal of Power Electronics and Drive Systems (IJPEDS) Jurnal Teknik Elektro Jurnal Momentum Jurnal Teknik Mesin Jurnal Teknik Mesin
Syafrul Hadi
Institut Teknologi Padang
Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Effect of the Environmentally Friendly Composite Materials on Physical and Thermal Properties of the Natural Composite Syafrul Hadi; Mastariyanto Perdana
Jurnal Teknik Mesin (JTM) Vol 8, No 1 (2018)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

One of the most widely used and applied technics materials today is a composite material based on nature. Natural composites are lightweight and relatively strong and environmentally friendly, so composites based on synthetic fibers are reduced in use. This study uses constituent materials derived from shells and bunches of palm oil plant crops that function as reinforcement. Shells and fibers from empty bunch of oil palm plants are made in the form of powder. Matrix used in this research was polyester resin and epoxy resin. The volume fraction between the reinforcement and the matrix is 50:50. The fabrication process of this environmentally friendly composite is compression molding with a pressure load of 30 kg/cm2. This study aims to determine the effect of the type of composite materials on physical and thermal properties of the natural composite. The results show that natural composites are high density composites. The highest density of palm shell/polyester composite is 1,223 g/cm3 and the lowest density of oil palm empty bunch/epoxy composite is 1,021 g/cm3. The highest thermal conductivity of oil palm shell/polyester composite is 0,28 W/m.K. Thermal conductivity composite value is more influenced by binder/matrix of composites.
PENGARUH PELAPISAN NIKEL (Ni) TERHADAP LAJU KOROSI PADA IMPELLER POMPA Syafrul Hadi
Jurnal Momentum ISSN 1693-752X Vol 17, No 1 (2015): Volume 17 No 1 Tahun 2015
Publisher : ITP Press

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Abstract

Pelapisan Ni adalah upaya pengendalian korosi logam yang dilapis terhadap suatu lingkungan korosif. Inovasi pelapisan Ni terhadap impeller pompa yang digunakan pada lingkungan air laut diharapkan dapat meningkatkan ketahanan korosinya. Ketahanan korosi impeller dilingkungan air laut ditandai oleh laju korosi yang rendah. Pelapisan nikel dengan teknik elektroplating menggunakan arus 3,5 A dan variasi waktu 2, 4, 6 dan 8 menit. Hasil lapisan dan laju korosi diukur dengan metoda pertambahan berat. Waktu pelapisan 2 menit, pertambahan beratnya 0.2 gram, 4 menit, pertambahan beratnya 0.4 gram, 6 menit pertambahan beratnya 0.8 gram dan 8 menit terjadi pertambahan beratnya 1.1 gram, Pengujian laju korosi impeller pompa selama 160 jam dilingkungan air laut dengan teknik sirkulasi terbuka. Hasil pengujian laju korosi menunjukan bahwa impeller yang telah dilapisi Nikel (Ni) dengan waktu pelapisan 8 menit adalah terrendah yaitu sebesar 0.002 mpy, dan laju korosi terhadap impeller yang tidak dilapisi sebesar 0,182 mpy
PENGEMBANGAN METODE PENGONTROLAN TEMPERATUR ALIRAN UDARA DENGAN MENGGUNAKAN ANALOG VOLTAGE-CONTROLLED PHASE-ANGLE-FIRED POWER INTERFACE Asmara Yanto; Syafrul Hadi
Jurnal Teknik Elektro Vol 2, No 3 (2013): Jurnal Teknik Elektro
Publisher : Situs resmi ITP Press

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Abstract

Alat-alat pengontrol temperatur aliran udara pada alat pengering udara buatan untuk proses pengeringan hasil-hasil pertanian, perkebunan, dan perikanan hanya dapar digunakan pada satu saluran udara. Permasalahan ini dapat dipecahkan dengan melakukan suatu inovasi alat pengontrol temperatur aliran udara. Pada makalah ini dikembangkan suatu metode dan membuat sebuah alat pengontrol temperatur aliran udara dengan menggunakan analog voltage-controlled phase-angle-fired power interface method. Disini, pengontrolan temperatur aliran udara dikembangkan untuk mengontrol tiga macam temperatur aliran udara pada sistem saluran udara. Pada setiap saluran udara ditempatkan pemanas dan sensor temperatur. Diharapkan, metode dan produk dari alat pengontrol ini dapat digunakan pada alat pengering buatan untuk proses pengeringan hasil-hasil pertanian, perkebunan, dan perikanan.
PENGARUH LINGKUNGAN MINYAK MENTAH TERHADAP LAJU KOROSI PADA PIPA BAJA KARBON DAN PIPA GALVANIS Syafrul Hadi; Jumarlis Jumarlis
Jurnal Teknik Mesin (JTM) Vol 3, No 2 (2013)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

In oil industry and gas, pipeline constituting main component that is utilized as medium of distribution and oil transmission, gas and good water at continent (onshore) and also at offshore (offshore). Rock oil (Crude oil ) a new one taken from by earth belly consisting of 3 main compositions which is oil,gas and water. Meaty alone rock oil of various chemical element kinds, generally mixed organic( hydrocarbon), oxygen, sulphur and nitrogen, water, salt, H2 S and mixed another organic. About problem which often been faced by pipeline on offshore (offshore) and land (onshore) in industry oil and gas is its happening corrosion. To the effect this research is subject to be know rock oil environment influence to corrosion fast carbon steel pipe and galvanic, well is seen from visual's watch and also of outgrows it happening corrosion runaway speed. pengorosian's process carbon steel pipe and galvanic pipe is done in rock oil medium with hall temperature 29 38O C. Of corrosion watch result and corrosion fast both of sample, visually that soaking time afters specimen 36th day until 47 th day, specimen experiences surface corrosion that merata. Its happening is this discoloration as a corrosion product form merata (karat). There is product even the other corrosion be been formed it sumuran's corrosion by marks sense little fleck. Meanwhile sample corrosion runaway speed greater galvanic pipe fast corrosion namely 0,2996 mpy of on carbon steel pipe sample 0.1242 mpy. It because of marks sense proprietary chemical element rock oils, its main h2 N, H2 O, CO2 , O2 one that so aggressive, where is element h2 N, H2 O, CO2, O2 this if contact with Fe will hasten its happening corrosion.
PENGARUH MODEL KEBOCORAN DINDING PIPA SAMPING TERHADAP FLUKTUASI TEKANAN ALIRAN DUA FASE AIR-UDARA PADA PIPA HORISONTAL Syafrul Hadi
Jurnal Teknik Mesin (JTM) Vol 1, No 1 (2011)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Aliran dua fase pada pipa akan memberikan pola aliran yang berbeda dan karakteristik slip antar fase. Pola aliran dapat diidentifikasi dengan fluktuasi tekanan, deteksi kebocoran harus menentukan karakteristik (pola aliran) sebelum suatu titik kebocoran dapat dikenali. Pendeteksian kebocoran aliran dua fase adalah lebih rumit dengan melibatkan distribusi fase di dalam pipa dan lokasi kebocoran pada sekeliling pipa. Bentuk kebocoran yang diteliti terjadi pada pipa dengan berdiameter 7 mm dan berposisi pada samping dinding pipa. Pada penelitian ini digunakan dua buah pressure differential tranducer yang dipasang di sisi upstream (sebelum kebocoran) dan sisi downstream (setelah kebocoran) dengan jarak 400 mm. Sinyal fluktuasi penurunan tekanan direkam dengan menggunakan akuisisi data (data acquisition) dan diolah dengan menggunakan Digital Signal Prossesing (DSP) dan Fast Fourier Transform (FFT) untuk menghasilkan Power Spectrum Density (PSD). Hasil penelitian ini memperlihatkan perubahan/perbedaan yang jelas pada pola sinyal fluktuasi penurunan tekanan di sisi upstream dan sisi downstream, bila terjadi kebocoran pada bagian samping pipa untuk aliran plug, aliran slug.
LAJU PENGERINGAN KAPULAGA MENGGUNAKAN ALAT PENGERING EFEK RUMAH KACA DENGAN BANTUAN TUNGKU BIOMASSA Syafrul Hadi
Jurnal Teknik Mesin (JTM) Vol 5, No 1 (2015)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

Pengolahan Kapulaga masih dilakukan secara tradisional. Pengeringan secara tradisional memiliki beberapa kelemahan dan membutuhkan lahan terbuka luas dan terjadinya kontaminasi dengan debu, kotoran sehingga kapulaga kurang higienis dan bermutu rendah. Untuk mengatasi masalah tersebut, maka dirancanglah sebuah Alat Pengering Efek Rumah Kaca, dengan bantuan Energi Biomassa (Pengering Hybrid). Tujuan dari penelitian ini adalah untuk mengetahui laju pengeringan Kapulaga dengan menggunakan alat pengering Hybrid. Alat pengering dengan memanfaatkan energi Matahari, Energi Biomassa dari pembakaran sekam padi. Pada penelitian ini, Kapulaga yang akan dikeringkan sebanyak 26 kg dengan kadar air awal 78%. Hasil penelitian diperoleh Laju pengeringan Kapulaga dengan menggunakan alat pengering Hybrid ini adalah sebesar 0.00062 kg/s. Proses pengeringan menggunakan alat pengering Efek Rumah Kaca dengan bantuan Tungku Biomassa ini mampu mengeringkan Kapulaga hingga kadar air 9.88% selama 12 jam (dua hari) pengeringan.
Influence of Chemical Composition and Chrome Plating Duration on Thickness and Hardness of the Surface Coating on the Brass Plate Syafrul Hadi
Jurnal Teknik Mesin (JTM) Vol 6, No 1 (2016)
Publisher : LP2M - Institut Teknologi Padang

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Abstract

In the metalworking technology, the electroplating process is categorized as a process of late. Electroplating can be interpreted as a metal coating process by using an electric current, wherein the anode used is chromium, but it also is the chemical composition that is acidic chromium, sulfuric acid, sulfuric and hydrochloric acid, are used to move the particles of the metal coating to the material to be coated , The objective of the research is to see the influence of the chemical composition of the solution to the thickness and hardness of the coating, the effect of long time coating thickness and hardness of the surface coating on the brass plate. Benefits of the research carried out to improve the quality of products in terms of physical, increase corrosion resistance, and increase violence. In this study specimens used rectangular brass plate with a size of 60 mm x 40 mm x 1.5 mm. Chromium electroplating process using a solution by varying the chemical composition of the solution and long plating time 20 minutes, 25 minutes and 30 minutes. Thickness testing conducted by means of Optical Microscope microstructure whereas hardness testing conducted by Micro Hardness Tester with a load of 9807 N. The results of this study showed that the thickness of the layer of the highest at 30 minutes with the chemical composition of the acid solution of chromium (CrO3) 200 grams / liter, sour sulphate (H2SO4) 30 g / liter of 32.85 μm while the highest hardness layer at the time of 25 minutes with the chemical composition of the acid solution of chromium (CrO3) 200 grams / liter, sulfuric acid (H2SO4) 30 g / liter of 112.67 VHN.
PENGARUH MODEL KEBOCORAN DINDING PIPA SAMPING TERHADAP FLUKTUASI TEKANAN ALIRAN DUA FASE AIR-UDARA PADA PIPA HORISONTAL Syafrul Hadi
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

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2011.v1.i1.33-40

Abstract

Aliran dua fase pada pipa akan memberikan pola aliran yang berbeda dan karakteristik slip antar fase. Pola aliran dapat diidentifikasi dengan fluktuasi tekanan, deteksi kebocoran harus menentukan karakteristik (pola aliran) sebelum suatu titik kebocoran dapat dikenali. Pendeteksian kebocoran aliran dua fase adalah lebih rumit dengan melibatkan distribusi fase di dalam pipa dan lokasi kebocoran pada sekeliling pipa. Bentuk kebocoran yang diteliti terjadi pada pipa dengan berdiameter 7 mm dan berposisi pada samping dinding pipa. Pada penelitian ini digunakan dua buah pressure differential tranducer yang dipasang di sisi upstream (sebelum kebocoran) dan sisi downstream (setelah kebocoran) dengan jarak 400 mm. Sinyal fluktuasi penurunan tekanan direkam dengan menggunakan akuisisi data (data acquisition) dan diolah dengan menggunakan Digital Signal Prossesing (DSP) dan Fast Fourier Transform (FFT) untuk menghasilkan Power Spectrum Density (PSD). Hasil penelitian ini memperlihatkan perubahan/perbedaan yang jelas pada pola sinyal fluktuasi penurunan tekanan di sisi upstream dan sisi downstream, bila terjadi kebocoran pada bagian samping pipa untuk aliran plug, aliran slug.
Strength Analysis of Betelnut Fiber-Reinforced Resin Composite Hendriwan Fahmi; Syafrul Hadi; Fajar Marda Kapur
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.i2.87-92

Abstract

Material is needed in life, the material itself is used aims to facilitate human activities, in the development of modified human material in various ways, one of which composite materials. Composite is a combination of two or more elements that get combined properties of the elements combined. Liquid Epoxy resin is a low molecular weight organic group containing epoxide. The composite material used is a fiber reinforced resin nut shell. Point of this study is know tensile strength of fiber nut shell composite, variations in the composition of the epoxy resin and fiber nut shell made in this study was 90:10%wt, 80:20%wt, and 70:30%wt, fiber length of 2 cm with random fiber orientation. This experiment is the tensile test. Tensile test was conducted to determine the tensile stress each - each composition, the standard used is ASTM 638 02. From the test results obtained on the composition of the composite tensile strength of 90: 10% wt is 9.8 MPa, the composition of 80: 20% wt was 13.06 MPa and the composition of 70: 30% wt is 14.04 MPa. Of the fracture surface can be seen that the fibers are well distributed and the bond between resin and fiber is also more evenly so that the tensile strength increased.
Effect of the Environmentally Friendly Composite Materials on Physical and Thermal Properties of the Natural Composite Syafrul Hadi; Mastariyanto Perdana
Jurnal Teknik Mesin Vol 8 No 1 (2018): Jurnal Teknik Mesin Vol.8 No.1 April 2018
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2018.v8.i1.33-38

Abstract

One of the most widely used and applied technics materials today is a composite material based on nature. Natural composites are lightweight and relatively strong and environmentally friendly, so composites based on synthetic fibers are reduced in use. This study uses constituent materials derived from shells and bunches of palm oil plant crops that function as reinforcement. Shells and fibers from empty bunch of oil palm plants are made in the form of powder. Matrix used in this research was polyester resin and epoxy resin. The volume fraction between the reinforcement and the matrix is 50:50. The fabrication process of this environmentally friendly composite is compression molding with a pressure load of 30 kg/cm2. This study aims to determine the effect of the type of composite materials on physical and thermal properties of the natural composite. The results show that natural composites are high density composites. The highest density of palm shell/polyester composite is 1,223 g/cm3 and the lowest density of oil palm empty bunch/epoxy composite is 1,021 g/cm3. The highest thermal conductivity of oil palm shell/polyester composite is 0,28 W/m.K. Thermal conductivity composite value is more influenced by binder/matrix of composites.
Co-Authors Arfidian Rachman Asmara Yanto Edison Edison Fajar Marda Kapur Hendriwan Fahmi Jumarlis Jumarlis Jumarlis M yahya Mastariyanto Perdana Sulaeman Sulaeman