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All Journal Jurnal Teknik Mesin Jurnal Litbang Industri Ensiklopedia of Journal JURNAL CRANKSHAFT Warta Pengabdian Andalas: Jurnal Ilmiah Pengembangan Dan Penerapan Ipteks Jurnal Teknik Mesin Jurnal Litbang Industri METAL : Jurnal Sistem Mekanik dan Termal Andalasian International Journal of Social and Entrepreneurial Development Cylinder : Jurnal Ilmiah Teknik Mesin Advance Sustainable Science, Engineering and Technology (ASSET)
Haznam Putra
Departemen Teknik Mesin, Fakultas Teknik, Universitas Sumatera Utara
Arts Humanities Automotive Engineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Studi Eksperimental dan Pemodelan Matematika Proses Pengeringan Kakao Dengan Energi Surya Secara Intermitten Putra, Haznam; Napitupulu, Farrel H; Ambarita, Himsar; Dina, Sari Farah
Jurnal Litbang Industri Vol 4, No 1 (2014)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2114.676 KB) | DOI: 10.24960/jli.v4i1.644.49-57

Abstract

In this research, the behaviors of cocoa drying using solar dryers have been studied. Cocoa was taken from plantation area around North Sumatra - Indonesia. Solar energy is used as a source of energy that save and clean for drying. Cocoa is a mainstay in Indonesian commodities, but quality of the current generated is relatively low. The aims of this research to gain the quality with mathematical modelling of drying by producing a good quality of cocoa. Preparation phase started from cocoa fermentation process. With some testing times, it was taken one test where the results of fermented cocoa that had been washed and dried from water content 55.83% to 7.01%, which lasted for three days, 22 to 24 April 2013 from at 7:00 to 17:00 pm (intermittent). The study was conducted at the Solar Energy Laboratory, Faculty of Engineering Department of Mechanical Engineering of North Sumatra University Medan. It is located in Medan city with the position of 3.36 ° N - 98.4 ° E, altitude 200 meters above sea level and meridian time (GMT +7). From the experimental results obtained an experimental equation mathematical model for intermittent drying of cocoa, with the value of diffusivity coefficient was between 1.39 x10-10 to 1.85 x10-10 m2/sec, besides the quality of the dried cocoa in this study was better in colour and not moldy than dried cacao directly under the sun. ABSTRAK Pada penelitian ini, perilaku pengeringan menggunakan pengering kakao tenaga surya telah dilakukan. Kakao diambil dari perkebunan di sekitar daerah Sumatera Utara – Indonesia. Energi surya digunakan sebagai sumber energi pengeringan yang hemat dan bersih. Kakao merupakan komoditi andalan di Indonesia hanya saja mutu yang saat ini dihasilkan masih terbilang rendah. Penelitian ini bertujuan mendapatkan persamaan pengeringan dengan pemodelan matematika untuk menghasilkan mutu kakao yang baik. Tahap preparasi dimulai dari proses fermentasi kakao. Dengan beberapa kali pengujian kakao, diambil hasil salah satu pengujian dimana hasil fermentasi kakao yang telah dicuci kemudian dikeringkan dari kadar air 55,83% menjadi 7,01% yang berlangsung selama tiga hari yakni 22–24 April 2013 dari pukul 07.00 – 17.00 WIB (Intermitten).  Penelitian dilakukan di Laboratorium Solar Energi Jurusan Teknik Mesin Fakultas Teknik Universitas Sumatera Utara Medan yang berada di kota Medan dengan posisi 3.36 °LU – 98.4 °BT, ketinggian di atas permukaan laut 200 meter dan waktu meridian (7 + GMT). Dari hasil percobaan percobaan didapat persamaan model matematika untuk pengeringan kakao secara intermitten, dengan nilai koefisien difusifitas berada pada nilai 1,39 x10-10 – 1,85 x10-10 m2/detik, selain itu kualitas kakao yang dikeringkan lebih baik dari segi warna dan tidak berjamur dibandingkan dengan kakao yang dikeringkan secara langsung dibawah sinar matahari.
Hardness Test on the Alloy Fe-50%atAl With the Addition of Nickel Using Mechanical Alloying Method Abrini, Dona; Ardhy, Sanny; Putra, Haznam
Jurnal Teknik Mesin (JTM) Vol 7, No 1 (2017)
Publisher : LP2M - Institut Teknologi Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1094.177 KB)

Abstract

Hardness test on the alloy Fe-50% at Al with the addition of nickel were prepared by mechanical alloying method. The powder mixture Fe-50at.%Al with the variation adding 0,5at.%Ni, and 2at.%Ni  are grinded using High Energy Milling HEM E-3D in Argon condition for 10 hours. To determine the hardness, conducted to take the sample with the certain time duration to each composition. Then, the sample which has been taken is characterization using hardness. The results showed that the highest hardness properties exist in the alloy Fe-50% at Al-0.5% at Ni, amounting to 161.53 HV. The addition of nickel on alloy reduces the hardness properties of the alloy. However, the addition of nickel require a short time to raise the hardness properties.
Studi Eksperimental dan Pemodelan Matematika Proses Pengeringan Kakao Dengan Energi Surya Secara Intermitten Haznam Putra; Farrel H Napitupulu; Himsar Ambarita; Sari Farah Dina
Jurnal Litbang Industri Vol 4, No 1 (2014)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24960/jli.v4i1.644.49-57

Abstract

In this research, the behaviors of cocoa drying using solar dryers have been studied. Cocoa was taken from plantation area around North Sumatra - Indonesia. Solar energy is used as a source of energy that save and clean for drying. Cocoa is a mainstay in Indonesian commodities, but quality of the current generated is relatively low. The aims of this research to gain the quality with mathematical modelling of drying by producing a good quality of cocoa. Preparation phase started from cocoa fermentation process. With some testing times, it was taken one test where the results of fermented cocoa that had been washed and dried from water content 55.83% to 7.01%, which lasted for three days, 22 to 24 April 2013 from at 7:00 to 17:00 pm (intermittent). The study was conducted at the Solar Energy Laboratory, Faculty of Engineering Department of Mechanical Engineering of North Sumatra University Medan. It is located in Medan city with the position of 3.36 ° N - 98.4 ° E, altitude 200 meters above sea level and meridian time (GMT +7). From the experimental results obtained an experimental equation mathematical model for intermittent drying of cocoa, with the value of diffusivity coefficient was between 1.39 x10-10 to 1.85 x10-10 m2/sec, besides the quality of the dried cocoa in this study was better in colour and not moldy than dried cacao directly under the sun. ABSTRAK Pada penelitian ini, perilaku pengeringan menggunakan pengering kakao tenaga surya telah dilakukan. Kakao diambil dari perkebunan di sekitar daerah Sumatera Utara – Indonesia. Energi surya digunakan sebagai sumber energi pengeringan yang hemat dan bersih. Kakao merupakan komoditi andalan di Indonesia hanya saja mutu yang saat ini dihasilkan masih terbilang rendah. Penelitian ini bertujuan mendapatkan persamaan pengeringan dengan pemodelan matematika untuk menghasilkan mutu kakao yang baik. Tahap preparasi dimulai dari proses fermentasi kakao. Dengan beberapa kali pengujian kakao, diambil hasil salah satu pengujian dimana hasil fermentasi kakao yang telah dicuci kemudian dikeringkan dari kadar air 55,83% menjadi 7,01% yang berlangsung selama tiga hari yakni 22–24 April 2013 dari pukul 07.00 – 17.00 WIB (Intermitten).  Penelitian dilakukan di Laboratorium Solar Energi Jurusan Teknik Mesin Fakultas Teknik Universitas Sumatera Utara Medan yang berada di kota Medan dengan posisi 3.36 °LU – 98.4 °BT, ketinggian di atas permukaan laut 200 meter dan waktu meridian (7 + GMT). Dari hasil percobaan percobaan didapat persamaan model matematika untuk pengeringan kakao secara intermitten, dengan nilai koefisien difusifitas berada pada nilai 1,39 x10-10 – 1,85 x10-10 m2/detik, selain itu kualitas kakao yang dikeringkan lebih baik dari segi warna dan tidak berjamur dibandingkan dengan kakao yang dikeringkan secara langsung dibawah sinar matahari.
Studi Eksperimental dan Pemodelan Matematika Proses Pengeringan Kakao Dengan Energi Surya Secara Intermitten Haznam Putra; Farrel H Napitupulu; Himsar Ambarita; Sari Farah Dina
Jurnal Litbang Industri Vol 4, No 1 (2014)
Publisher : Institution for Industrial Research and Standardization of Industry - Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2114.676 KB) | DOI: 10.24960/jli.v4i1.644.49-57

Abstract

In this research, the behaviors of cocoa drying using solar dryers have been studied. Cocoa was taken from plantation area around North Sumatra - Indonesia. Solar energy is used as a source of energy that save and clean for drying. Cocoa is a mainstay in Indonesian commodities, but quality of the current generated is relatively low. The aims of this research to gain the quality with mathematical modelling of drying by producing a good quality of cocoa. Preparation phase started from cocoa fermentation process. With some testing times, it was taken one test where the results of fermented cocoa that had been washed and dried from water content 55.83% to 7.01%, which lasted for three days, 22 to 24 April 2013 from at 7:00 to 17:00 pm (intermittent). The study was conducted at the Solar Energy Laboratory, Faculty of Engineering Department of Mechanical Engineering of North Sumatra University Medan. It is located in Medan city with the position of 3.36 ° N - 98.4 ° E, altitude 200 meters above sea level and meridian time (GMT +7). From the experimental results obtained an experimental equation mathematical model for intermittent drying of cocoa, with the value of diffusivity coefficient was between 1.39 x10-10 to 1.85 x10-10 m2/sec, besides the quality of the dried cocoa in this study was better in colour and not moldy than dried cacao directly under the sun. ABSTRAK Pada penelitian ini, perilaku pengeringan menggunakan pengering kakao tenaga surya telah dilakukan. Kakao diambil dari perkebunan di sekitar daerah Sumatera Utara – Indonesia. Energi surya digunakan sebagai sumber energi pengeringan yang hemat dan bersih. Kakao merupakan komoditi andalan di Indonesia hanya saja mutu yang saat ini dihasilkan masih terbilang rendah. Penelitian ini bertujuan mendapatkan persamaan pengeringan dengan pemodelan matematika untuk menghasilkan mutu kakao yang baik. Tahap preparasi dimulai dari proses fermentasi kakao. Dengan beberapa kali pengujian kakao, diambil hasil salah satu pengujian dimana hasil fermentasi kakao yang telah dicuci kemudian dikeringkan dari kadar air 55,83% menjadi 7,01% yang berlangsung selama tiga hari yakni 22–24 April 2013 dari pukul 07.00 – 17.00 WIB (Intermitten).  Penelitian dilakukan di Laboratorium Solar Energi Jurusan Teknik Mesin Fakultas Teknik Universitas Sumatera Utara Medan yang berada di kota Medan dengan posisi 3.36 °LU – 98.4 °BT, ketinggian di atas permukaan laut 200 meter dan waktu meridian (7 + GMT). Dari hasil percobaan percobaan didapat persamaan model matematika untuk pengeringan kakao secara intermitten, dengan nilai koefisien difusifitas berada pada nilai 1,39 x10-10 – 1,85 x10-10 m2/detik, selain itu kualitas kakao yang dikeringkan lebih baik dari segi warna dan tidak berjamur dibandingkan dengan kakao yang dikeringkan secara langsung dibawah sinar matahari.
Perawatan Kapal Nelayan Material Fiberglass di Kota Padang Sanny Ardhy; Haznam Putra
METAL: Jurnal Sistem Mekanik dan Termal Vol 1, No 2 (2017): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (495.436 KB) | DOI: 10.25077/metal.1.2.142-146.2017

Abstract

Fishing boats of fiberglass materials require special care to make the vessel more durable. In the field, often found paint coating ships that have faded and peeling within a few years. Yet it is expected that the vessel can last long to continue to maximize the catch of fishermen. Most of the treatments found on fiberglass boats are light treatments, such as cracks. Cracks from gelcoat and scratches due to impact are maintenance work performed at boat or boat building. The key to fiberglass treatment is how to keep the gelcoat layer of fiber shiny. As is known, layer gelcoat is a very strong layer. But over time, weather changes and exposure to sunlight, this gelcoat layer can fade if not treated properly. In order to avoid these conditions, the most efficient way to do that is coated fiberglass with wax or special polish. Selection of care products for fiber boats also cannot be perfunctory. Certain types of waxes that have anti-ultraviolet rays are highly recommended for treatment. By doing proper maintenance techniques, will make the life of the fiber boat more durable and still look shiny.
Pengembangan Instrumen Pewarnaan Alam pada Studio Wastra Pinankabu Muhammad Ilhamdi Rusydi; Prima Fithri; Haznam Putra; Andi Pawawoi; Muhammad Imran Hamid; Riko Nofendra
Warta Pengabdian Andalas Vol 28 No 4 (2021)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat (LPPM) Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jwa.28.4.514-520.2021

Abstract

One of the obstacles the Pinankabu studio faces is the lack of adequate equipment for processing silk threads and the currently available dyeing equipment for natural dyeing. Some equipment such as degumming pans, hangers, furnaces, and stoves are no longer suitable for needs. The properties of silk, which vary with demand and temperature, must be studied under appropriate conditions. Currently, partners can not confirm whether these conditions are met at work. The planned solution to this problem is the design of degumming pans, hangers, furnaces, and stoves that can increase work effectiveness and improve the quality of production and design systems to measure pH and temperature accurately and in real-time. This activity aims to develop yarn processing equipment at Pinankabu studio to increase productivity and maintain product quality. The expected benefits of this activity are that partners have natural colouring instruments that can improve the quantity and quality of production. Operators can work comfortably because the equipment is designed to design ergonomic users. Equipment that will be developed is an example of a similar business. The method used was the implementation of engineered products on partners. The implementation stages consisted of problem formulation, solution determination, solution design, implementation, evaluation, and activity outputs. The expected result is that partners can increase the productivity and quality of the yarn produced.
Hardness Test on the Alloy Fe-50%atAl With the Addition of Nickel Using Mechanical Alloying Method Dona Abrini; Sanny Ardhy; Haznam Putra
Jurnal Teknik Mesin Vol 7 No 1 (2017): Jurnal Teknik Mesin Vol.7 No.1 April 2017
Publisher : Lembaga Penelitian dan Pengabdian Masyarakat (LP2M) - ITP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21063/jtm.2017.v7.i1.45-49

Abstract

Hardness test on the alloy Fe-50% at Al with the addition of nickel were prepared by mechanical alloying method. The powder mixture Fe-50at.%Al with the variation adding 0,5at.%Ni, and 2at.%Ni are grinded using High Energy Milling HEM E-3D in Argon condition for 10 hours. To determine the hardness, conducted to take the sample with the certain time duration to each composition. Then, the sample which has been taken is characterization using hardness. The results showed that the highest hardness properties exist in the alloy Fe-50% at Al-0.5% at Ni, amounting to 161.53 HV. The addition of nickel on alloy reduces the hardness properties of the alloy. However, the addition of nickel require a short time to raise the hardness properties.
PERFORMANCE ENGINE 1108 CC MENGGUNAKAN BAHAN BAKAR RON 88 DAN RON 92 Nofriyandi.R Nofriyandi.R; Rina Rina; Haznam Putra
Ensiklopedia of Journal Vol 1, No 2 (2019): Vol 1 No 2 Edisi 1 Januari 2019
Publisher : Lembaga Penelitian dan Penerbitan Hasil Penelitian Ensiklopedia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (669.696 KB) | DOI: 10.33559/eoj.v1i2.34

Abstract

This experimental study aims to compare the performance and Spesific Fuel Consumsion (Sfc) where were produced from RON 88 fuel and RON 92 fuel with T101D Automotive engine test bed, with optionals tool. Engine gasoline type 1.1 8V was used in this study. The difference of torque which is caused by the use of RON 88 and RON 92 fuel is obtained. The highest torque at occurred 2500 rpm where the comparison between these two is about 4.458 %. Then, the performance of RON 88 has slight difference. The Spesific Fuel Consumption (sfc) of RON 92 fuel is lower than RON 88 fuel sfc. The lowest decrease (sfc) is 21.212% at 3700 rpm and the overall engine decline is 7.796%.
STUDI EKSPERIMENTAL DAN PEMODELAN MATEMATIKA PROSES PENGERINGAN KAKAO ENERGI SURYA SECARA INTERMITTENT Haznam Putra; Farel H. Napitupulu; Himsar Ambarita; Siti Farah Dina
Cylinder : Jurnal Ilmiah Teknik Mesin Vol. 1 No. 1 (2014): APRIL 2014
Publisher : Department of Mechanical Engineering Atma Jaya Catholic University of Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

In this research, the behavior of cocoa drying using solar dryers have been studied. Experiments conducted on drying cocoa beans that have been fermented first. Cocoa plantations are taken from the area around North Sumatra - Indonesia. Solar energy is used as a source of energy that save and clean for drying. Cocoa is a mainstay in Indonesian commodities, but the quality of the current generated is relatively low. As the aims of this research is gain quality with mathematical modeling of drying by producing good quality cocoa. Preparation phase starts from cocoa fermentation process. With some testing times cocoa taken one test where the results of fermented cocoa that has been washed and dried from water content 55.83% to 7.01% (db), which lasted for 3 (three) days ie, 22 to 24 April 2013 from at 7:00 to 17:00 pm (intermittent). The study was conducted at the Solar Energy Laboratory, Faculty of Engineering Department of Mechanical Engineering of North Sumatra University Medan. It is located in Medan city with the position of 33.6 ° N - 98.4 ° W, altitude 200 meters above sea level and meridian time (GMT +7). From the experimental results obtained experimental equation mathematical model for intermittent drying of cocoa, with the value being the value of the diffusivity coefficient of 1.39 x 10^-10 to 1.85 x 10^-10 m^2/sec, besides the quality of the dried cocoa in this study better than dried cacao directly under the sun.
Observation of Wear Characteristic on Razor Blades with Different Materials and Lubricants Dedison Gasni; Haznam Putra; Muhammad Azam
METAL: Jurnal Sistem Mekanik dan Termal Vol 7, No 2 (2023): Jurnal Sistem Mekanik dan Termal (METAL)
Publisher : Department of Mechanical Engineering, Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/metal.7.2.18-22.2023

Abstract

Wear of razor blades often occurs when a man shaves his facial. In this paper, the observation of wear characteristic with different types of material and lubricant is investigated. The experiment was conducted on 6 students of the Mechanical Engineering study program with uniform beards and mustaches for 6 weeks. Each week, the wear from the surface of each blade was observed using an optical microscope. Two types of razors were investigared with different materials based on the price, which are consisted of cheap razor (type-A) and expensive razor (type-B), each of which has 3 blades. There were three types of lubricants used, namely: water, liquid soap, and foam. The result shows that type-B razor is better than type-B razor because the material has a high carbon content based on chemical content from testing with Energy Dispersive X-Ray (EDX). Foam lubricant can slow down the wear on razor blades. The 1st blade razor wears out faster than the 2nd and 3rd bladem, respectively.
Co-Authors Abrini, Dona Andi Pawawoi Awalina, Rahmi Ayu Lestari, Resti Dedison Gasni Dona Abrini Dona Abrini Farel H. Napitupulu Farrel H Napitupulu Farrel H Napitupulu Himsar Ambarita Ismet Hari Mulyadi Lestari, Resti Ayu Muhammad Azam Muhammad Azam Muhammad Imran Hamid Napitupulu, Farrel H Nofriyandi.R Nofriyandi.R Nofriyandi.R, Nofriyandi.R Prima Fithri Riko Nofendra Rina Rina Rina Rina Rio Muhammad Nur Rusydi, Muhammad Ilhamdi Sanny Ardhy Sari Farah Dina Sari Farah Dina Sari Farah Dina Siti Farah Dina