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All Journal Info-Teknik Turbo : Jurnal Program Studi Teknik Mesin Civil and Environmental Science Journal (CIVENSE) Jurnal Elemen Jurnal IMPACT: Implementation and Action International Journal of Education, Science, Technology, and Engineering (IJESTE) Scientific Journal of Mechanical Engineering Kinematika JTAM ROTARY International Journal of Mechanical Engineering Technologies and Applications (MECHTA) Jernih : Jurnal Tugas Akhir Mahasiswa Jurnal Inovasi Penelitian dan Pengabdian Masyarakat
Akhmad Syarief
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Humanities Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Other

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ANALISIS SIFAT FISIK BRIKET LIMBAH ARANG KAYU ALABAN-SEKAM PADI BERPEREKAT TAPIOKA DAN SAGU Akhmad Syarief; Geovani Glen Supit; Andy Nugraha; Muhammad Nizar Ramadhan
ELEMEN : JURNAL TEKNIK MESIN Vol. 9 No. 2 (2022)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34128/je.v9i2.162

Abstract

Energi terbarukan yang ramah lingkungan merupakan solusi untuk menangani penggunaan energi yang berasal dari fosil. Energi terbarukan dapat berasal dari berbagai macam limbah, seperti limbah arang kayu alaban dan sekam padi. Keduanya merupakan limbah yang jarang sekali untuk dimanfaatkan lebih lanjut untuk mendapatkan nilai ekonomis yang tinggi. Hal ini dikarenakan belum banyak informasi yang beredar di masyarakat dalam hal pemanfaatannya lebih lanjut. Maka dari itu dilakukan penelitian untuk mengetahui bagaimana pengaruh variasi komposisi dan jenis perekat (tapioka dan sagu) terhadap sifat fisik briket (kadar air (water content), kadar abu (ash content), kadar zat terbang (volatile matter), kadar karbon terikat (fixed carbon) dan nilai kalor) pada briket limbah arang kayu alaban dan sekam padi. Terdapat lima variasi komposisi dengan perbandingan limbah arang kayu alaban dan sekam padi yaitu 90% : 10%, 70% : 30%, 50% : 50%, 30% : 70%, 10% : 90%. Menggunakan perekat yang terbuat dari tapioka dan sagu. Hasil penelitian menunjukkan peningkatan limbah arang kayu alaban dan dengan perekat sagu menghasilkan sifat fisik terbaik karena kadar air, abu, dan zat terbangnya rendah sedangkan kadar karbon terikat dan nilai kalornya tinggi. Berdasarkan SNI 01-6235-2000 didapatkan briket terbaik yaitu menggunakan komposisi limbah arang kayu alaban dan sekam padi sebesar 90% : 10% dengan perekat sagu menghasilkan kadar air sebesar 0.54%, kadar abu 4.70%, kadar zat terbang 42.02%, kadar karbon terikat 52.73% dan nilai kalor 5828 kal/gr.
PENGARUH ALKALISASI HYBRID COMPOSITE BULU ITIK (ANAS PLATHYCUS BORNEO) - SERAT PURUN TIKUS (ELEOCHARIS DULCIS) BERMATRIX POLYESTER TERHADAP KEKUATAN TEKAN DAN LENTUR syarief, akhmad; Fadliyanur, Fadliyanur; Fadilah, Aris; Ramadhasari, Aulia Aufa; Budianto, Akhmad Ghiffary
TURBO [Tulisan Riset Berbasis Online] Vol 12, No 2 (2023): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v12i2.2910

Abstract

Itik Alabio (Anas Plathycus Borneo) berkembang di daerah Alabio Kabupaten Hulu Sungai Utara, Kalimantan Selatan dengan populasi itik pada tahun 2006 tercatat 3.487.002 ekor. Selama ini itik alabio hanya dimanfaatkan untuk daging dan telur, padahal bagian bulu unggas yang satu ini juga bisa dimanfaatkan sebagai bahan baku komposit karena sifatnya yang relatif kuat dan elastis. Untuk meningkatkan kualitas komposit, 10% bulu bebek dikombinasikan dengan 90% Serat Purun Tikus (Eleocharis Dulcis) sehingga menjadi komposit Hybrid. Bulu Itik komposit Hibrida dan Serat Purun Tikus di alkalisasi selama 10, 20, 30, 40, 50, dan 60 menit. Penelitian ini menggunakan metode uji eksperimental dan uji statistik ANOVA-One Way. Dari hasil penelitian diketahui bahwa waktu alkalisasi mempengaruhi nilai kekuatan sifat mekanik. Nilai paling optimal kekuatan tarik dan lentur dicapai pada waktu perendaman 20 menit. Yaitu sebesar 257,24 Mpa untuk kekuatan tarik dan kekuatan lenturnya sebesar 4,37 Mpa. Dalam komposit yang diperkuat serat dengan alkalisasi NaOH 5%, ikatan antara serat dan resin menjadi sempurna. Namun, semakin lama waktu alkalisasi, hemiselulosa, lignin dan pektin secara bertahap hilang sama sekali, kekuatan serat alami akan berkurang karena kumpulan mikrofibril yang membentuk serat yang disatukan oleh lignin dan pektin akan terpisah, sehingga serat hanya akan menjadi serat halus yang dipisahkan satu per satu sama lain.
IMPLEMENTASI PENDINGIN AIR PADA SEL SURYA SEBAGAI ALTERNATIF PENINGKATAN EFISIENSI SUMBER ENERGI LISTRIK DI PONDOK PESANTREN MAHAD ARRAHMAN Syarief, Akhmad; Cahyono, Gunawan Rudi; Ansyah, Pathur Razi; Ma'ruf, Ma'ruf
Jurnal IMPACT: Implementation and Action Vol. 3 No. 2 (2021): Jurnal Impact
Publisher : Politeknik Negeri Banjarmasin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31961/impact.v3i2.1149

Abstract

Pondok Pesantren Mahad Arrahman telah memanfaatkan energi terbarukan berupa sel surya untuk mengurangi pemakaian energi listrik, dan juga berfungsi sebagai energi cadangan ketika terjadinya pemadaman listrik. Namun, kendala lain muncul pada pemanfaatan energi sel surya ini, yaitu daya yang terpasang masih tidak mampu mencukupi kebutuhan pondok pesantren akan listrik. Penurunan performa ketika proses charging di siang hari yang terasa lebih lambat, dibandingkan waktu menjelang siang. Salah satu penyebabnya adalah ketika temperatur meningkat terjadi penurunan performa sel surya. Untuk itu diperlukan tambahan energi listrik berupa panel surya beserta instalasinya dengan teknologi berpendingin air. Kegiatan pengabdian masyarakat ini meliputi perancangan alat teknologi sel surya berpendingin air yang diharapkan dapat membantu mengatasi permasalahan di Pondok Pesantren Mahad Arrahman. Luaran kegiatan ini adalah berupa pemahaman dan transfer keterampilan teknologi sel surya berpendingin air dan Alat yang terdiri dari Sel Surya, Pompa air DC, Pipa Instalasi jalur air, Saklar, Kontroler, Inventer, dan Baterai. Manfaat dari kegiatan ini adalah terjadinya penambahan daya listrik menggunakan energy tenaga surya dan diharapkan terjadinya penurunan temperature setelah dipasang teknologi pendingin air sehingga terjadi peningkatan performa sel surya.
ANALISA UNJUK KERJA INDUCED DRAFT FAN PLTU ASAM-ASAM UNIT 3 DAN 4 Syarief, Akhmad; Nugroho, Wisnu Setyo; Nugraha, Andy
INFO-TEKNIK Vol 21, No 2 (2020): INFOTEKNIK VOL. 21 NO. 2 DESEMBER 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i2.10053

Abstract

Throughout the year 2015, PLTU Asam Asam Unit 3 and 4’s Induced draft fans frequently having issues. These issues were affects customer’s elecricity consumption because of load generated from PLTU Asam Asam unit 3 and 4 is was decreased heavily, seldom made the unit shut down for maintenance. This issues was being discussed and investigated to find the source and solutian to fix it. After the investigation, it is found that fly ash who was being carried by flue gas through IDF was stuck to fan’s blade and create unbalance in its rotation. Next modification was applied to fly ash transmitter to make sure its operating continous because it has been stopped for a while. The effect of this modification is quite significant if we compare data from before and after modification, it can be see that derating and shutdown because of IDF problem is fewer than what it was before modification.
Effect of Volume Fraction hybrid composite duck feathers (Anas Plathycus Borneo) - Rat Purun Fiber (Eleocharis Dulcis) With Matrix Polyester On Tensile And Bending Strength Syarief, Akhmad; Fadliyanur; Suryanta, Dhanu; Nugraha, Andy; Aufa Ramadhasari, Aulia; Setiawan, Bayu
Civil and Environmental Science Journal (CIVENSE) Vol. 5 No. 2 (2022)
Publisher : Fakultas Teknik Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.civense.2022.00502.10

Abstract

Alabio ducks (Anas Plathycus Borneo) developed in the Alabio area of Hulu Sungai Utara Regency, South Kalimantan with a duck population in 2006 recorded at 3,487,002 heads. So far, alabio ducks have only been used for meat and eggs, even though the feather part of this one poultry can also be used as a composite raw material because of its relatively strong and elastic nature. To improve the quality of the composite, duck feathers are combined with rat purun fibers (eleocharis dulcis) so that they become Hybrid composites. Fraksi volume Hybrid composite Duck Feathers and Rat Purun Fiber are as follows 10% : 90 %, 20% : 80%, 30% : 70%, 40% : 60%, 50% : 50%, 60% : 40%, 70% : 30%, 80% : 20%, 90% : 10%. This study used experimental methods. From the results of the study, it is known that the value of tensile and tensile strength stress and bending strength decreased as the percentage of rat purun fibers decreased compared to the percentage of duck feathers.
PERANCANGAN ULANG MESIN PENGADUK BAHAN BAKU BRIKET SERBUK KAYU MERANTI (SHOREA SPP) Syarief, Akhmad; Mulgi, M Abdul; Ansyah, Pathur Razi
JTAM ROTARY Vol 4, No 2 (2022): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v4i2.6665

Abstract

Tahapan penelitian ini secara garis besar meliputi perancangan dan perhitungan, implementasi rancangan dalam bentuk gambar desain, pembuatan dan perakitan mesin, serta pengujian mesin hasil rancang bangun mesin motor bensin diisi bensin 2 liter, lalu di panaskan kurang lebih 5 menit. Saat mesin sudah panas, langkah selanjutnya menaruh serbuk kayu meranti ke dalam wadah pengaduk kemudian air panas dicampur dengan tepung terigu lalu diaduk hingga mengental yang berfungsi sebagai perekat perekat yang sudah jadi dimasukan ke wadah pengaduk yang berisi serbuk kayu meranti tunggu kurang lebih 15 menit agar tercampur merata. Jika Waktu 15 menit maka lepaskan penutup keluar bahan yang sudah jadi. Kapasitas mesin pengaduk adonan briket serbuk arang adalah 38,66 kg/jam dan daya yang.digunakan untuk menggerakkan poros sirip pengaduk adalah 0,27 watt. Diameter pulley motor 65mm dan diameter pulley penggerak poros sirif adalah 65mm. Bahan poros yang digunakan adalah ST37 dengan kekuatan tarik (σB) 37 kg/mm2. Diameter poros sirip yang digunakan 12 mm dan panjang poros 1030 mm. Bantalan radial bola sudut dalam dengan nomor bantalan UCP 205 yang digunakan untuk menopang poros. In general, this research includes designing and calculating, implementing the design in the form of design drawings, manufacturing and assembling the engine, as well as testing the engine design results from a gasoline engine filled with 2 liters of gasoline, then heated for approximately 5 minutes. When the machine is hot, the next step is to put the meranti wood powder into the mixing container. Then hot water is mixed with flour and stirred until it thickens which functions as an adhesive. The finished adhesive is put into a mixing container containing meranti wood powder, wait for about 15 minutes to mix evenly. If the time is 15 minutes, then remove the cover to come out of the finished material. The capacity of the charcoal powder briquette dough mixer is 38.66 kg/hour and the power required to move the fin shaft is 0.27 watts. The diameter of the motor pulley is 65mm, and the diameter of the pulley is the fin shaft drive is 65mm.The shaft material used is ST37 with a tensile strength (σB) of 37 kg/mm2.The diameter of the fin shaft used is 12mm and the length of the shaft is 1030mm.The bearings used to support the shaft are radial inner angle ball bearings with number UCP bearing 205.
PENGARUH FRAKSI VOLUME HYBRID COMPOSITE BULU ITIK DAN SERAT PURUN TIKUS BERMATRIK POLYSTER TERHADAP KEKUATAN TEKAN DAN BENTUK PATAHAN Syarief, Akhmad; Fauzi, Dimas Habib
JTAM ROTARY Vol 5, No 2 (2023): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v5i2.9766

Abstract

Material komposit umumnya dipahami sebagai sebuah material gabungan antara sebuah matrik dan satu atau beberapa penguat (reinforced), dengan sifat berbeda satu dengan yang lain. Tujuan dari penelitian ini adalah untuk mengetahui nilai kekuatan tekan serta menganalisis bentuk patahan dari hybrid composite bulu itik (Anas Plathycus Borneo) – serat purun tikus (Eleocharis Dulcis) bermatriks polyester terhadap uji tekan. Pengujian tekan yang dilakukan menggunakan standar ASTM D1621-00 . Hasil penelitian diperoleh kuat tekan tertinggi dimiliki oleh spesimen dengan fraksi volume 10% bulu itik – 90% serat purun tikus, yaitu 130,98 MPa dan nilai kuat tekan terendah dimiliki oleh spesimen dengan fraksi volume 90% bulu itik – 10% serat purun tikus, yaitu 86,29 Mpa. Nilai tersebut terlihat bahwa semakin tinggi komposisi purun tikus maka semakin tinggi kuat tekannya dan jika semakin tinggi komposisi serat bulu itik makan nilai kuat tekannya akan menurun. Spesimen uji tekan dengan nilai tertinggi dan terendah mengalami jenis patahan Fibre Pull Out.Composite materials are generally understood as composite materials between a matrix and one or several reinforced (reinforced), with different properties from one another. The purpose of this study was to determine the value of compressive strength and to analyze the fracture shape of the hybrid composite of duck down (Anas Plathycus Borneo) – water chestnuts (Eleocharis Dulcis) fiber with a polyester matrix against compression tests. Compressive testing was carried out using the ASTM D1621-00 standard. The results showed that the highest compressive strength was obtained by a specimen with a volume fraction of 10% duck hair – 90% water chesnuts fiber, namely 130.98 MPa, and the lowest compressive strength value was owned by a specimen with a volume fraction of 90% duck hair – 10% water chesnuts fiber 86.29 MPa. It can be seen that the higher the composition of the water chesnuts, the higher the compressive strength, and if the higher the composition of the duck hair fiber, the compressive strength value will decrease. The compressive test specimens with the highest and lowest values experienced a type of Fiber Pull Out fracture.
PENGARUH VARIASI ARUS PENGELASAN GMAW TERHADAP DISTORSI DAN KEKERASAN PADA BAJA ST37 POST HEATING 400˚C Zuhri Simanjuntak, Rinal Fadel; Ansyah, Pathur Razi; Ramadhan, Muhammad Nizar; Syarief, Akhmad
JTAM ROTARY Vol 6, No 2 (2024): JTAM ROTARY
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/jtam_rotary.v6i2.12540

Abstract

Penelitian ini memiliki tujuan untuk mengeksplorasi dampak variasi arus pengelasan GMAW terhadap distorsi dan kekerasan pada material baja ST37 setelah dipanaskan pada suhu 400˚C. Hasil penelitian mengenai variasi arus dan perlakuan post heating pada suhu 400°C di daerah HAZ dan pada area Weld Metal menunjukkan perbedaan yang signifikan dalam nilai kekerasan. Perbedaan ini dipengaruhi oleh variasi arus yang diberikan; semakin tinggi arusnya, semakin besar pula pelunakan logam yang terjadi. Sebagai contoh, pada arus 100 A, nilai kekerasan tercatat sebesar 65 HRB, sedangkan pada arus 120 A, nilai tersebut turun menjadi 56,4 HRB. Di bagian Weld Metal, nilai kekerasan tertinggi terlihat pada arus 80 A (59,8 HRB), dan nilai terendah terdapat pada arus 120 A (51,1 HRB). Dari ketiga perbedaan suhu yang diberikan kepada spesimen dengan arus yang berbeda, yaitu 80 A, 100 A, dan 120 A, memiliki nilai distorsi rata-rata tertinggi pada arus 80 A (1,17 mm), diikuti oleh arus 100 A (0,85 mm), dan terendah pada arus 120 A (0,68 mm). Hasil penelitian uji distorsi ini menunjukkan bahwa perlakuan post heating sangat berpengaruh terhadap nilai distorsi pada spesimen tersebut. This study seeks to investigate the impact of varying GMAW welding currents on distortion and hardness in ST37 steel material post-heating at 400˚C. The research findings on the variations in current and post-heating treatment at 400°C in both the HAZ (Heat Affected Zone) and Weld Metal areas reveal significant differences in hardness values. These differences are attributed to variations in the current supplied; the higher the current, the greater the metal melting (softening) observed. For instance, at 100 A, the hardness value is recorded at 65 HRB, while at 120 A, it decreases to 56.4 HRB. In the Weld Metal section, the highest hardness value is observed at 80 A (59.8 HRB), and the lowest is at 120 A (51.1 HRB). Among the three different current levels (80 A, 100 A, and 120 A) applied to spesimens, the average distortion value is highest at 80 A (1.17 mm), followed by 100 A (0.85 mm), and lowest at 120 A (0.68 mm). These results underscore the significant impact of post-heating treatment on the distortion of the spesimen.
The Damage Control of Liquid Waste Pumping Machines in Palm Oil Companies Tumanggor, Agustina Hotma Uli; Syarief, Akhmad; Atmana, Fendy Ari
International Journal of Education, Science, Technology, and Engineering (IJESTE) Vol 4 No 2: December 2021
Publisher : Lamintang Education and Training Centre, in collaboration with the International Association of Educators, Scientists, Technologists, and Engineers (IA-ESTE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36079/lamintang.ijeste-0402.287

Abstract

X is a company that works in the field of oil palm plantations and has a palm oil production capacity of 60 tons per hour. The products of palm oil that have been produced are Crude Palm Oil (CPO) and Palm Kernel Oil (PKO). The various kinds of waste produced by the company as a result of the palm oil industry process are liquid waste, palm kernels, fiber and seed shells. Liquid waste is used as organic fertilizer for oil palm plantations which will be sent through a liquid waste pump machine. Damage that occurs to the liquid waste pump machine will inhibit the delivery of liquid waste to the plantation, thus affecting the yield of palm oil from the plantation itself. This study describes the application of repair and preventive maintenance policies for liquid waste pump machines by looking at the frequency of damage to the liquid waste pump engine and predicting the delivery of liquid waste to the pump engine for the next period as well as providing solutions for handling damage that occurs in the liquid waste pump engine. From the results of calculations on data processing, the results of how to control the causes of damage that occur in the liquid waste pump machine can be overcome by using the Preventive Maintenance Method within a period of 1 month and maintenance of every component in the liquid waste pump machine within 1 cycle, namely 357.27 hours with a repair time of 5.82 hours. Controlling other causes of damage is to add a filter to the liquid waste pool so that stones, leaves and liquid waste husks do not hinder the suction pipe of the liquid waste pump machine.
PENGARUH VARIASI PENDINGINAN DAN HOLDING TIME TERHADAP NILAI KEKERASAN DAN STRUKTUR MIKRO PADA PERLAKUAN PANAS BAJA ASSAB 88 syarief, akhmad
TURBO [Tulisan Riset Berbasis Online] Vol 13, No 2 (2024): TURBO: Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v13i2.3529

Abstract

Along with the rapid development of science, improving material properties needs to be done to support the needs in the industrial world. This study aims to determine the effect of heat treatment with variations in cooling media and holding time on the value of hardness and microstructure in heat treatment of Assab 88 steel. The research process begins with cutting Assab 88 steel, then the heating process is carried out with a temperature of 850˚C, then the cooling process is carried out with various media such as air, water and oil with holding time variations for 30 minutes, 45 minutes and 60 minutes. The results showed that the highest hardness value was found in water cooling media with a holding time of 60 minutes at 87.1 HRB and the lowest value in air cooling media at 78.1 HRB. Microstructure testing in water cooling media will form martensite which makes the steel harder but brittle, while with oil cooling media will produce a balance between hardness and toughness because bainite structures are formed and martensite is more dominant and a little pearlite. Keywords: Cooling medium, holding time, hardness test, microstructure test, ASSAB 88 steel.
Co-Authors Abdul Aziz Achmad Febrian Hidayat Aditya Eko Kristanto Akbar, Jamaluddin Muhammad Akhmad Ghiffary Budianto Akhmad Robittah Andy Nugraha Arifin, Zulkarnain Aswar Aswar Atmana, Fendy Ari Aufa Ramadhasari, Aulia Awaly, Nuryasin Qadimil Azis, Alif Putra Bayu Setiawan Chairul Abdi Dali Dali Fadilah, Aris Fadliyanur Fadliyanur, Fadliyanur Fathirahman, Muhammad Fauzi, Dimas Habib Geovani Glen Supit Gunawan Rudi Cahyono Iberahim, Jerry Iphan Fitrian Radam Ma'ruf, Ma'ruf Miftach Secha Mikhael, Allexyus Muhammad Nizar Ramadhan Muhammad Wal Mursalin Muhammad Yusuf Mulgi, M Abdul Nugroho, Fiqrei Akbar Nugroho, Wisnu Setyo Parekke, Simon Pathur Razi Ansyah Pratama, Bagus Harits Raliannoor Ralianoor Ramadhasari, Aulia Aufa Ristiawan, Ichsan Rohim, M. Nabil Saputra, M. Reynaldi Perdana Shopie, Dwilma Supit, Geovani Glen Surono, Bambang Suryanta, Dhanu Tumanggor, Agustina Hotma Uli Zuhri Simanjuntak, Rinal Fadel