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Desrial
Departemen Teknik Mesin Dan Biosistem Institut Pertanian Bogor Jl. Lingkar Akademik, Kampus IPB Darmaga, Bogor 16680
Agriculture, Biological Sciences & Forestry Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Earth & Planetary Sciences Electrical & Electronics Engineering Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Physics

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Effect of different transportation period on body weight loss, hematological and biochemical stress responses of sheep Lendrawati, L.; Priyanto, R.; Jayanegara, A.; Manalu, W.; Desrial, D.
Journal of the Indonesian Tropical Animal Agriculture Vol 45, No 2 (2020): June
Publisher : Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jitaa.45.2.115-123

Abstract

The study was conducted to evaluate the duration of road transportation during 4, 8 and 12 hours on body weight loss, hematological and biochemical responses of sheep. Twenty-four male Javanese thin tailed sheep were separated into transported group (T4, T8 and T12) and non-transported group (NT4, NT8 and NT12). Transportation (T) groups were transported for 4, 8 and 12 h in the same open pick up with 0.28 m2/head of loading density. Body weight, haematological and biochemical blood profiles were determined. The results showed that increasing of transportation duration significantly increased (P<0.05) body weight loss and decreased (P<0.05) hematocrit, cortisol and glucose values in the blood. However, these values were in the normal range of sheep well-being. In conclusion, transported healthy Javanese thin tailed sheep under good condition without feed and water access up to 12 h can tolerate to adverse effect of transportation without disturbing their welfare.
Evaluasi Kinerja Tarik Taktor Tangan Dengan Bahan Bakar Minyak Kelapa Murni Desrial .; Yohanes Aris Purwanto; Fandra Wiratama
Jurnal Keteknikan Pertanian Vol. 24 No. 1 (2010): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1274.854 KB) | DOI: 10.19028/jtep.024.1.%p

Abstract

Abstract Past research shown that coconut oil can be used directly in Diesel engine by adding a heating element in the fuel delivery system. This study aims to evaluate the performance of a hand tractor pull using pure coconut oil fuel. The Diesel engine of the tractor was equipped with a fuel heater installed on the mufler. Traction performance parameters tested were wheel slippage, drawbar pull, forward speed and drawbar power on the path of concrete and soil. Besides, the tractor was also tested on plowing using a moldboard plow. The test results on the concrete track showed that the maximum drawbar pull was 1.21 kN generated at a speed of 0.92 m/s, with a maximum drawbar power of 1.21 kW at the wheel slip of 10.87%. While the drawbar pull on the soil track was 1.37 kN at a speed of 0.79 m/s, with a maximum value of 0.71 kW drawbar power when wheels slip 22.25%. The results of tillage test showed that field efficiency was 84.66%, which was not much different from the test result using Diesel fuel. Keywords: fuel heater, Diesel engine, pure coconut oil, drawbar pull performance Diterima: 8 Desember 2009; Disetujui: 16 Maret 2010
Metode Pembuatan Guludan Secara Mekanis denganTenaga Penggerak Traktor Dua Roda untuk Budidaya Tanaman Sayuran Wawan Hermawan; Desrial .; Susanto Budi Sulistyo
Jurnal Keteknikan Pertanian Vol. 23 No. 1 (2009): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.023.1.%p

Abstract

The objective of this study was to determine the best tillage method for making planting beds forvegetables cultivation using a two-wheel type tractor. Five tillage methods using a two-wheel type tractorwith its equipments were tested and evaluated in this study. The methods which were tested were: 1)plowing using a reversible type plow, followed by ridging using a ridger and finished by harrowing using arotary tiller (B-F-G 1 method) ; 2) plowing, followed by harrowing and finished by ridging (B-G-F method);3) plowing, followed by harrowing followed by ridging and finished by 2nd harrowing (B-G-F-G method); 4)plowing, followed by 40 cm width of harrowing and finished by ridging (B-G-F 2 method); and 5) plowing,followed by 40 cm width of harrowing and finished by ridging with 40 cm tractor wheel-base (B-G-F 3method). The experiments were conducted on several plots of dry land. The results of the experimentsshowed that the B-G-F 3 method produced the best planting bed form, an appropriate bed size and abetter soil condition for vegetables cultivation. The field capacity of this method was 74 m2/hour and wasthe highest capacity among the five methods.Keywords: planting bed, two wheel tractor, tillage, vegetable cultivationDiterima: 9 Desember 2008; Disetujui: 20 Maret 2009
Pengembangan Alogaritma Pengolahan Citra untuk Menghindari Rintangan pada Traktor Tanpa Awak Usman Ahmad; Desrial .; I Dewa Made Subrata; Sjahrul Annas
Jurnal Keteknikan Pertanian Vol. 24 No. 2 (2010): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.024.2.%p

Abstract

AbstractUnmanned tractors, even though it uses global positioning system (GPS) technology to identify the working path, still require an ability to recognize the environment in front of it in order to avoid obstacles thatmay exist. A device that can be used to recognize the environment in front of the tractor and avoid obstacles that may exist, is the camera. However, images captured by the camera need to be processed to detect possible obstacles at the front of the tractor. This study aimed to develop image processing algorithms to detect the possible presence of obstacles on the path to be traversed by an unmanned tractor, and directed the tractor to a safe path by giving the new coordinates when there are obstacles in front of it. Several mage processing techniques such as edge detection, opening and closing, marking free area, and the determination of the coordinates were used for the purpose of directing the path in front of the tractor when there are obstacles that must be avoided.Keywords: image processing, obstacles, unmanned tractor, algorithmsDiterima: 19 April 2010; Disetujui: 18 Oktober 2010
Pengembangan Metoda Deteksi Rintangan untuk Traktor Tanpa Awak Menggunakan Kamera CCD Usman Ahmad; . Desrial; Mudho Saksono
Jurnal Keteknikan Pertanian Vol. 26 No. 1 (2012): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.026.1.%p

Abstract

Abstrak Kemampuan menghindari rintangan pada lahan kerja berupa pohon, batu, lubang, pematang, manusia, dan benda-benda lainnya yang tidak mungkin dilewati diperlukan oleh traktor yang dioperasikan  tanpa awak berbasis GPS.  Sistem pengindera lingkungan sekitar menggunakan kamera CCD memungkinkan untuk mendeteksi rintangan yang berada di depan traktor secaral realtime. Namun dengan kemungkinan beragamnya obyek yang ditangkap oleh kamera, pengolahan citra menjadi kompleks dan membutuhkan waktu yang relatif lama sehingga tidak cocok untuk diaplikasikan. Penelitian ini mencoba mengembangkan metoda deteksi rintangan pada lahan kerja traktor tanpa awak yang lebih sederhana dengan penambahan sinar laser merah pada kamera CCD yang digunakan. Sinar laser merah yang tertahan pada rintangan memberikan informasi pada sistem pengindera bahwa di depan ada rintangan, dan jaraknya dari traktor dihitung berdasarkan prinsip phitagoras. Hasil penelitian menunjukkan bahwa semua rintangan berjarak 1 m, 80% rintangan berjarak 2 m, dan 40% rintangan berjarak 3 m dapat dideteksi. Rintangan yang berjarak lebih dari 3 m dari traktor belum dapat dideteksi karena kekuatan sinar laser yang menurun dengan bertambahnya jarak. Akurasi  dalam pendugaan jarak secara keseluruhan untuk rintangan yang terdeteksi juga masih rendah, yaitu 67.5%. Kata Kunci: traktor tanpa awak, sistem deteksi, rintangan, pengolahan citra Abstract For unmanned tractor guided by global positioning system, ability for eluding obstacles such as trees, big stone, cavity, bund, people, and other objects in the work area is very important in order not to stop the operation.Surrounding detection system using CCD camera makes it possible for unmanned tractor to detect obstacles in front of it realtime. However, with so many different objects that may captured by the camera, it will need a lot of image processing steps that takes a lot of time so it is no longer suitable for realtime detection in application. The proposed research is aimed to develop a simpler obstacle detection method by adding a red laser pointer to the CCD camera used to capture scene in front of the tractor. The red laser light that reflected by an obstacle gives an important information in the image, and the distance of the obstacle could be calculated based on phytagoras theory. The results showed that all obstacles with 1 m distance, 80% obstacles with 2 m distance, and 40% obstacles with 3 m distance could be detected. Obstacles with more than 3 m distances could not be detected due to weak laser light for the distances. The accuracy of distance prediction for all situation is 67.5%, which is still need improvements. Key Words: unmanned tractor, detection system, obstacle, image processing Diterima: 01 November 2011; Disetujui: 04 Maret 2012  
DESAIN RODA BESI BERSIRIP TRAKTOR DUA-RODA DENGAN BANTUAN (CAD). Irwin Syahri Cebro; Wawan Hermawan; Desrial .
Jurnal Keteknikan Pertanian Vol. 20 No. 2 (2006): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.020.2.%p

Abstract

Abstract Traction performance of a cage wheel for two-wheel tractor depends on its shape dimension, lugs materials and soil condition. In order to get the optimum design of the cage wheel, the relation betwen tractor, implement and soil condition should be considered carefully. The objective of this research was to determine optimum design parameter of cage wheel based on working condition of tractor and to make a computer program for design analysis and for producing engineering drawing of the cage wheels. Soil condition and two-wheel tractor construction were measured and the data was used for getting the optimum design parameters by using optimization method. A computer program was developed and employed for the optimization process and for drawing the design result. As a trial of the program, the optimum design parameters of cage wheel for Yanmar YST-EX tractor working at Sawah Baru rice field were found to be: 80 cm of wheel diameter: 10 lugs: 19.63 cm x 9.68 c, of lug size; and 20o of lug angle. The result revealed that the program could determine the optimum design parameters and could produce the engineering drawing of the cage wheel property. Keyword: cage wheel. Design parameter, engineering drawing, computer program.
Desain Konseptual Penangkap Tandan Buah Sawit dan Pemanfaatan Energi Potensialnya Wawan Hermawan; Desrial .; Muhammad Iqbal Nazamuddin; Rusnadi .
Jurnal Keteknikan Pertanian Vol. 1 No. 1 (2013): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.01.1.%p

Abstract

AbstractIn oil palm harvesting, falling fruit bunches have a considerable potential energy, which can be captured and used to power the wheelbarrow in evacuating the fruit bunches. This study was conducted to measurethe engineering characteristics of fruit bunches harvesting, determine the best fruit bunches catchment platform material, analyze the potential energy of falling fresh fruit bunch, and design a conceptual designof the catchment platform and evacuation machine. Measurements of the characteristics of the harvesting were done in an oil palm plantation. Four types of fruit catchment platform materials were tested, namely:steel plate, wood board, expanded steel plate and rubber sheet. The results showed that, bunches fell at a distance between 0.6 m to 1.4 m from the tree. Fruit bunches weight was in the range of 16 kg to 32 kg.The rubber catchment platform was superior to the other materials in reducing the scattered loose fruits and bruised fruits. Potential energy of falling fruit bunches were in the range of 0.44-4.44 kJ. Theoreticaltraveling distance of the wheel barrow powered by the captured potential energy was in the range of 2.27 m - 22.98 m. Based on the data obtained, a conceptual design of catchment platform and evacuation machinewas designed.Keywords: oil palm harvesting, engineering characteristics, potential energy, catchment platform,conceptual design.AbstrakDalam panen kelapa sawit, tandan buah yang jatuh memiliki energi potensial yang cukup besar, yang dapat ditangkap dan digunakan sebagai daya penggerak angkong dalam mengevakuasi tandan buah segar(TBS). Penelitian ini dilakukan untuk mengukur karakteristik teknik panen TBS, menentukan bahan landasan terbaik untuk penangkap TBS, menganalisis potensi energi potensial TBS yang jatuh, dan merancangdesain konseptual dari mesin penangkap dan pengangkut TBS. Pengukuran karakteristik panen dilakukan di perkebunan kelapa sawit. Empat jenis bahan landasan tangkapan diuji, yaitu: pelat baja, papan kayu, pelat baja expanded dan lembaran karet. Hasil penelitian menunjukkan bahwa, tandan jatuh pada jarak antara 0.6 m sampai 1.4 m dari pohon. Berat TBS berkisar antara 16 kg sampai 32 kg. Bahan karet paling baik untuk penangkap TBS dalam mengurangi jumlah buah tercecer dan buah memar. Energi potensial TBS jatuh berada di kisaran 0,44-4,44 kJ. Jarak tempuh teoritis dari angkong yang menggunakan energipotensial yang ditangkap, berada di kisaran 2.27 m - 22.98 m. Berdasarkan data pengukuran, sebuah desain konseptual mesin penangkap dan evakuasi TBS telah dirancang.Kata kunci: panen kelapa sawit, karakteristik teknik, energi potensial, landasan tangkapan, desain konseptual.Diterima: 24 Mei 2013; Disetujui: 27 Agustus 2013
Rancang Bangun Konverter Biogas untuk Motor Bensin Silinder Tunggal Desrial .; Dyah Wulandani
Jurnal Keteknikan Pertanian Vol. 2 No. 1 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.1.%p

Abstract

AbstractThe need for energy continues to increase along with the increase of population in Indonesia. This is in contrast with the fact that the main oil energy source is reducing day by. To overcome this problem renewableenergy sources such as biogas becomes very important. Methane content in the biogas ranged between 60-65 %, where the value is large enough to be used as an energy source replacement of gasoline. The purpose of this study is to design a converter that is capable to perform biogas and air mixing for optimum use of biogas in gasoline engine. The main parts of biogas converter are the venturi, choke valves , throttle valves, as well as the coupler to the engine. Testing was done by applying converter on a gasoline engine with biogas fuel. Engine performance was tested using a dynamometer and the results are compared with the performance of the motor using gasoline fuel. Test results show that the optimal power is achieved at 0979 kW at 3146 rpm and a torque of 4.3 Nm, while the motor power with gasoline kW and a torque of 1.86 Nm at 6:21.Keywords: renewable energy, biogas, converter, gasoline engine, agricultural machineryAbstrakKebutuhan energi terus meningkat seiring dengan bertambahnya jumlah penduduk di Indonesia. Hal ini berkebalikan dengan kenyataan bahwa sumber energi utama kita sehari - hari, yaitu minyak bumi terus menipis. Untuk mengatasi kelangkaan ini diperlukan adanya sumber energi baru dan terbarukan, salah satunya biogas. Kandungan metana dalam biogas berkisar antara 60 - 65 %, dimana nilai ini cukup besaruntuk dijadikan sebagai sumber energi pengganti bahan bakar bensin. Tujuan dari penelitian ini adalah merancang sebuah konverter yang mampu mencampur biogas dan udara dengan campuran yang tepatdan agar motor bensin mampu beroperasi dengan bahan bakar biogas secara optimal. Konverter yang dirancang memiliki bagian - bagian utama yaitu venturi, selongsong venturi, katup choke, katup throttle, serta dudukan. Pengujian konverter dilakukan dengan cara memasangkan konverter pada motor bensin 4 tak dan menjalankan motor dengan bahan bakar biogas. Selanjutnya motor diuji kinerjanya menggunakandinamometer dan hasilnya dibandingkan dengan kinerja motor menggunakan bahan bakar bensin. Hasil pengujian menunjukkan daya optimal yang dicapai sebesar 0.98 kW pada 3146 rpm dan torsi sebesar 4.31 Nm, sementara daya motor dengan bahan bakar bensin sebesar 1.86 kW dan torsi sebesar 6.21 Nm.Kata kunci: energi terbarukan, biogas, konverter, motor bensin, alat mesin pertanianDiterima: 01 Oktober 2013; Disetujui: 07 Januari 2014
Analisis Gaya Spesifik Pemotongan Sabut Kelapa Muda (Cocos nucifera) Tika Hafzara S; Desrial .; Dyah Wulandani
Jurnal Keteknikan Pertanian Vol. 2 No. 2 (2014): Jurnal Keteknikan Pertanian
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.19028/jtep.02.2.%p

Abstract

AbstractTo design a young coconut trimming machine, it’s important to analyze the cutting mechanism of young coconut husk. The aim of this study were to analyze the cutting mechanism of young coconut husk and generate mathematical model of specific cutting force. Sharpening angle, cutting angle and sharpened knife were optimized to get the lowest cutting force. Mathematical model has been generated to estimate the maximum cutting force for one side sharpened knife and two side sharpened knife with cutting angle (θ) at 0Oand above 0O. Based on the analysis of this study, the type of knife that require the lowest cutting force is two side sharpened knife with sharpening angle (β) = 10O and cutting angle (θ)= 30O.Keywords : coconut husk , cutting angle, cutting force, knife, mathematical model.AbstrakUntuk merancang alat trimming kelapa muda, penting untuk melakukan analisis mekanisme pemotongan sabut kelapa muda. Tujuan dari penelitian ini adalah untuk menganalisis mekanisme pemotongan sabutkelapa muda dan membangun model matematika pendugaan gaya spesifik pemotongan. Variasi faktor sudut ketajaman, sudut potong, dan sisi mata pisau dioptimalkan untuk menghasilkan gaya potong terendah.Model matematika telah dibangun untuk menduga gaya pemotongan maksimum untuk pisau satu sisi menajam dan dua sisi menajam dengan sudut potong (θ) 0O dan diatas 0O. Dari hasil penelitian disimpulkanbahwa jenis pisau yang menghasilkan gaya pemotongan terendah adalah pisau dua sisi menajam dengan sudut ketajaman 10O dan sudut potong 30O.Kata kunci: gaya pemotongan, model matematika, pisau, sabut kelapa, sudut potong.Diterima: 13 Maret 2014; Disetujui:10 Juli 2014
Desain dan Pengujian Mesin Sortasi Telur Ayam Feby Nopriandi; Desrial .; Wawan Hermawan
Jurnal Keteknikan Pertanian Vol. 3 No. 2 (2015): JURNAL KETEKNIKAN PERTANIAN
Publisher : PERTETA

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1400.871 KB) | DOI: 10.19028/jtep.03.2.%p

Abstract

Based on Indonesian National Standard (SNI) No 3926:2008, egg weight is classified into three classifications: small (<50 g), medium (50-60 g), and large (>60 g). Nowadays egg grading process in Indonesia was still done manually. The objective of this research was for designing, constructing, and performance testing of egg sorting machine. The machine testing includes performance accuracy, machine capacity, and egg crack of the sorting result. The egg sorting machine consisted of five main parts: conveyor system, steering conveyor system, sorting conveyor system, and exit conveyor system. Test result showed that the machine could sort the egg with accuracy of 83 % without any cracking in eggshell. The machine capacity was most affected by the speed of sorting conveyor system. The variables which influence the speed of sorting conveyor system were initial speed rotation (Na), work speed rotation (Nb), and length of the track on initial speed rotation path (L). The maximum machine capacity was 61 eggs per minute and obtained by configuration of Na, Nb, and L of 15.5 rpm, 24.5 rpm, and 6 cm respectively.  
Co-Authors Agus Sutejo Agussabti Agussabti Anuraga Jayanegara Ari Purbayanto Aris Purwanto Armansyah H Tambunan Armansyah Halomoan Tambunan Asep Sapei Budhi Hascaryo Iskandar D.S, Made Diang Sagita Dyah Wulandani Fandra Wiratama Feby Nopriandi Hariansyah, M. I Dewa Made Subrata Irfan, Akhmad Irwin Syahri Cebro Lendrawati Lendrawati Lendrawati, L. M. Hariansyah Made D.S Mohamad Yamin Mudho Saksono Muhammad Iqbal Nazamuddin Putri, Irriwad R. P.A, Setiawan R. Priyanto Ramayanti Bulan, Ramayanti Ramayanty Bulan Ramayanty Bulan Ramayanty Bulan Robert Sinaga Rudi Priyanto Rusnadi . Sahrun Dongoran Saputra, Rahmad Surya Hadi Setiawan R. P.A Siahaan, Herbert Hasudungan Sjahrul Annas Soni Solistia Wirawan Susanto Budi Sulistyo Sutrisno Mardjan Tika Hafzara S Tineke Mandang Usman Ahmad Vita Rumanti Kurniawati W. Manalu Wasmen Manalu Wawan Hermawan Wawan Hermawan Wawan Hermawan Yahya Abdul Kodir, Delphi Yahya