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All Journal Rekayasa Mesin Jurnal Rekayasa Mesin Info-Teknik Turbo : Jurnal Program Studi Teknik Mesin Jurnal Elemen Infotekmesin Scientific Journal of Mechanical Engineering Kinematika JTAM ROTARY International Journal of Mechanical Engineering Technologies and Applications (MECHTA) AEEJ : Journal of Automotive Engineering and Vocational Education Automotive Experiences Jurnal Alat Berat
Sabitah, A'yan
Politeknik Negeri Banjarmasin
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Transportation

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ANALISIS KEBUTUHAN UDARA PEMBAKARAN UNTUK MENGOPTIMALKAN PROSES PEMBAKARAN BOILER PT. PLN (PERSERO) SEKTOR PEMBANGKITAN ASAM ASAM UNIT 3 & UNIT 4 Akhmad Syarief; Yudistira Bayu Setiambodo; Muhammad Nizar Ramadhan; A'yan Sabitah
INFO-TEKNIK Vol 21, No 1 (2020): INFOTEKNIK VOL. 21 NO. 1 JULI 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i1.8966

Abstract

The performance of a power plant unit is strongly influenced by various aspects, one of which is very determined by how the combustion process occurs in the combustion chamber, because it can affect the efficiency of the power plant itself, especially in the efficiency aspects of the boiler combustion process. To find out the efficient operation of the boiler, the operator as the holder of the power plant must understand what the combustion process is like in it. Good combustion will always require the right combination of fuel and air (oxygen). From the results of the research that has been done, it can be seen that if the actual amount of air flow needed for the combustion process is closer to the ideal air flow value it will indirectly increase the combustion efficiency value of the boiler.
PENGARUH SUPLAI UDARA TERHADAP KARAKTERISTIK BENTUK DAN TEMPERATUR NYALA API DARI UAP PREMIUM A'yan Sabitah; Moh. Sulhan; Ricky Indriyanto; Akhmad Syarief
INFO-TEKNIK Vol 21, No 1 (2020): INFOTEKNIK VOL. 21 NO. 1 JULI 2020
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v21i1.8960

Abstract

The scarcity of LPG gas that often occurs in Indonesia often makes Indonesian citizens uneasy. This scarcity led many researchers to conduct research that could reduce the dependence of Indonesian citizens with LPG gas. In this study, researchers conducted tests related to the use of premium steam as fuel. This test is carried out by varying the air supply, where this supply has been determined at 2 km/cm2 , 3 km/cm2 and 4 km/cm2 , in addition to the air supply this test also performs fire temperature measurements using thermocouples and data logers, where the location of the thermocouple has been located at points 1 cm, 3cm and 5 cm from the mouth of the nozzle. Based on the test results, the shape of the flame from variations in the air supply obtained the best and stable results were in the 3 km/cm2 air supply, while the other for the 2 km/cm2 air supply was found to be unstable fire and for which the 4 km/cm2 fire air supply looked large and unstable. Whereas for the highest temperature of the three placement points the thermocouple is located at the top point with a distance of 5 cm from the mouth of the fire with an average temperature of around 900oC and the lowest temperature is at 1 cm from the nozzle mouth, where the temperature is at 400oC to 550oC, in addition The temperature stability is in the air supply of 3 km/cm2
UJI EKSPREMENTAL KARAKTERISTIK BRIKET ARANG BERBAHAN BAKU LIMBAH SEKAM PADI SIAM DAN PANDAK A'yan Sabitah; Apip Amrullah; Akhmad Syarief
INFO-TEKNIK Vol 20, No 1 (2019): INFOTEKNIK VOL. 20 NO. 1 JULI 2019
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/infotek.v20i1.6958

Abstract

Utilization of waste rice husk, especially in South Kalimantan, is not very efficient. Therefore, it needs more maximal utilization, for example it is used to manufacture alternative fuels in the form of charcoal briquettes. The effort to maximizing utilize waste rice husk as charcoal briquettes, we need to know the combustion characteristics. The study, we used a variation of the ratio between siam rice husk charcoal in the peat region areas and pandak is located in the tidal areas with adhesives of 5%, 10% and 15% respectively. Characteristics of testing follows SNI 01-6235-2000. Based on the results of the study, it is known that the charcoal waste of rice husk waste with a percentage of 5% adhesive has a good value compared to the addition of other adhesives, where siam rice husk has a water content of 4.9% and pandak has a higher moisture content of 5.0%, whereas for husk heating values Pandak rice is larger with a value of 5063.6 cal / gram, compared to siam rice husk with a value of 4894.5 cal / gram.
PENGARUH KEKUATAN IMPAK POLIESTER BERPENGUAT SERAT BAMBU HAUR DAN FIBERGLASS PADA APLIKASI BUMPER MOBIL Raliannoor Raliannoor; A'yan Sabitah
ELEMEN : JURNAL TEKNIK MESIN Vol 7 No 1 (2020)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (486.458 KB) | DOI: 10.34128/je.v7i1.115

Abstract

Abstract. The process of developing composite materials is greatly increasing, the need for quality composite materials and the development of composite manufacturing technology are increasingly dominating in the machinery industry. The aim of this research is to develop a composite material with bamboo fiber reinforcement and glass fiber as an alternative to automotive raw materials to replace plastic. Preparation of composite specimens with each reinforcement with a volume fraction of 2%, 2.5%, and 3%. The polymer material used is Yukalac BQTN 157-EX polyester as the matrix. With haur bamboo fiber and fiberglass as reinforcement. Making specimens using the hand lay up method. The test carried out is the impact test of composite specimens. The Impact Test is carried out using the ASTM D 5896 standard. Based on the test results, it can be concluded that the effect of fiber volume fraction on the characteristics of composite samples for impact test. Composite strengthened with bamboo haur and fiberglass powder at 2.5% weight volume fraction has the most ideal characteristic, which has an average impact strength of 0.8412 J/mm2. , and with an average impact strength of 0.3180 J/mm2 at a weight volume fraction of 2.5%. Equivalent to automotive raw materials, namely to develop polyoxymethylene alternative plastic materials.
PENINGKATAN HASIL HIDROGEN PADA PROSES GASIFIKASI TANDAN SAWIT A'yan Sabitah; Moh. Sulhan; Raliannoor Raliannoor
ELEMEN : JURNAL TEKNIK MESIN Vol 7 No 1 (2020)
Publisher : POLITALA PRESS

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (472.333 KB) | DOI: 10.34128/je.v7i1.116

Abstract

Abstrak. Katalis bentonit merupakan katalis yang mampu menyerap kadar air dan memiliki sifat penghantar panas yang baik, pada proses gasifikasi katalis bentonit sangat berperan aktif dalam penyebaran panas ke biomassa. Penelitian ini dilakukan menggunakan tandan kosong kelapa sawit dengan tambahan katalis bentonit 10% dari berat total biomassa, selain itu penelitian ini juga mengamati pengaruh temperatur proses gasifikasi, dimana temperatur yang digunakan adalah 500 oC, 600 oC dan 700 oC. Dari hasil penelitian diperoleh volume gas mengalami peningkatan seiring dengan tingginya temperatur proses gasifikasi dan kadar hidrogen H2 dalam syngas mengalami peningkatan namun kadar CH4 mengalami penurunan. Selain produk gas disini juga mengamati hasil akhir berupa char dan tar, dimana hasil tar mengalami penurunan seiring dengan bertambahnya temperatur sedangkan untuk char tidak terlalu mengalami perubahan signifikan pada proses gasifikasi.
Eksperimental karakteristik api dari suplai udara pada pembakaran uap partalite-partamax A'yan Sabitah; Ichwan Noor Ardiyat
TURBO [Tulisan Riset Berbasis Online] Vol 11, No 2 (2022): TURBO : Jurnal Program Studi Teknik Mesin
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/trb.v11i2.2232

Abstract

Partamax and partalate fuel are used as vehicle fuel in parts of the world, especially in Indonesia. Partamax and partalate have their own characteristics and if they are mixed, they will change the physicochemical properties of the pure fuel and affect the combustion behavior. In this study, an experiment was conducted on the combustion of partamax vapor, partalate and a mixture of partamax and partalate by varying the air supply by 1 liter/minute, 2 liters/minute and 3 liters/minute. The results of the combustion of fuel vapors were observed in the form of temperature by measuring using a thermocouple placed in two places with a height of 20 mm and 40 mm from the nozzle mouth and observing the flame using a camera. The results obtained from the observations are the flow of fire produced in the form of a laminar flame of all fuels, The highest flame temperature is owned by partamax fuel with an air supply of 3 liters/minute of 1047 oC on a thermocouple at an altitude of 20 mm and 1027 oC at an altitude of 40 mm, while the lowest temperature is owned by partalate fuel. This is because the octane value of partamax is higher. As the octane value increases, the flame temperature increases, but the flame height decreases. In addition, when the air supply is 3 liters/minute, a lift off phenomenon occurs in the partamax fuel and partamax-partalate mixture. This is because the octane value of partamax is higher. As the octane value increases, the flame temperature increases, but the flame height decreases. In addition, when the air supply is 3 liters/minute, a lift off phenomenon occurs in the partamax fuel and partamax-partalate mixture. This is because the octane value of partamax is higher. As the octane value increases, the flame temperature increases, but the flame height decreases. In addition, when the air supply is 3 liters/minute, a lift off phenomenon occurs in the partamax fuel and partamax-partalate mixture.
Pengaruh Model Pembelajaran Numbered Heads Together dan Motivasi Belajar Terhadap Hasil Belajar ilham yuliady; Hendra Dani Saputra; Yogi Dian Alfana; A'yan Sabitah
AEEJ : Journal of Automotive Engineering and Vocational Education Vol 4 No 1 (2023): AEEJ : Journal of Automotive Engineering and Vocational Education
Publisher : Universitas Negeri Padang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24036/aeej.v4i1.189

Abstract

This research based on the problem of the learning process of the Engineering Mechanics course. The teacher center learning process causes students to be passive so that students feel bored because of one way communication. Based on data student learning outcomes, it is still not well achieved, therefore it is necessary to apply the numbered heads together learning model to improve learning motivation and learning outcomes. This type of reseach is a factorial 2x2. The subjects of this study were 48 students. The sampling technique is carried out random cluster sampling. Data collection by dissemination of learning motivation questionnaires and learning outcome test instruments and analyzed using two ways anova. Based on the results of data testing, it can be concluded that the Numbered heads together learning model can improve student motivation and learning outcomes. Penelitian ini dilatar belakangi permasalahan proses pembelajaran mata kuliah Mekanika Teknik. Proses pembelajaran yang terpusat pada dosen menyebabkan mahasiswa menjadi pasif sehingga mahasiswa merasa bosan karena komunikasi satu arah. Berdasarkan data hasil belajar mahasiswa masih belum tercapai dengan baik, maka dari itu perlu dilakukan penerapan model pembelajaran numbered heads together dalam peningkatan motivasi belajar dan hasil belajar. Jenis penelitian ini eksperimen dengan desain faktorial 2x2. Subjek penelitian ini mahasiswa yang berjumlah 48 orang. Teknik pengambilan sampel dilakukan random cluster sampling. Pengumpulan data dengan penyebaran angket motivasi belajar dan Instrumen tes hasil belajar dan dianalisa dengan two ways anova. Berdasarkan hasil pengujian data dapat disimpulkan bahwa model pembelajaran numbered heads together dapat meningkatkan motivasi belajar dan hasil belajar mahasiswa.
Collapse Behavior and Energy Absorption Characteristics of Design Multi-Cell Thin Wall Structure 3D-Printed Under Quasi Statistic Loads Wirawan, Willy Artha; Junipitoyo, Bambang; Putro, Setyo Hariyadi Suranto; Sabitah, A’yan; Suudy, Ahmad Hamim; Ridwan, Ridwan; Choiron, Moch. Agus
Automotive Experiences Vol 7 No 1 (2024)
Publisher : Automotive Laboratory of Universitas Muhammadiyah Magelang in collaboration with Association of Indonesian Vocational Educators (AIVE)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/ae.10892

Abstract

Crashworthiness is a passive device that has an important function as an absorbing component of the impact energy resulting from an accidental event. The main problem in the crashworthy design is the dimensional limitation on the front end of the vehicle with the driver so that most of the energy absorption is limited. Besides, the complexity of crashworthiness design is difficult to make conventionally. This research aims to find out the effectiveness of crashworthiness design in energy absorption and the resulting deformation patterns. Crashwortines are made in a multi-cell shape using PLA material and printed using a 3D printing raise machine. Crashworthiness is produced with four variation shapes of a Multi-cell circle (MCC), Multi-Cell square (MCS), Multicell pentagonal (MCP), and Multi-Cell pentagonal circles (MCPC) with a side thickness of 2 mm and a length of 150 mm. Experimental quasi-static testing is carried out in the frontal direction using a UTM machine at an operating speed of 2mm/s. The results of the study show that the design of the crash box of the pentagon circle has a significant increase in the energy absorption value of 62.49%, which can be recommended in future impact resistance tube designs. The characteristics of the deformation pattern and the failure resulting from the crashworthiness tend to form the pattern of the bending lamina failure. Failures can occur due to plastic fold, elastic bend, and pressure deformation mechanisms followed by new folding formations (lobes).
EFFECT OF VARIATION FORM (QUADRILATERAL AND HEXAGON), PARTICLE SIZE AND PRESSURE ON THE CHARACTERISTICS OF BURNING CHARCOAL WOOD WASTE BRIQUETTES ALABAN AND RICE HUSK Syarief, Akhmad; Sabitah, A’yan; Hakim, Luqmanul; Fadliyanur, Fadliyanur; Suryanta, Dhanu Suryanta; Galang P, Defrihans; Napitulu, Hansen Rivaldo; Ramadhasari, Aulia Aufa; Ardiyat, Ichwan Noor
Scientific Journal of Mechanical Engineering Kinematika Vol 6 No 1 (2021): SJME Kinematika Juni 2021
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v6i1.187

Abstract

Bahan bakar briket sudah banyak diteliti dan dikembangkan sebagai pengganti bahan bakar padat seperti kayu. Salah satunya briket terbuat dari biomassa yang sudah tidak terpakai seperti serbuk gergaji, sekam padi bahkan limbah sisa industri. Pada penelitian ini peneliti tertarik untuk mengetahui karakteristik pembakaran briket yang terbuat dari sekam padi dicampur limbah arang kayu alaban yang meliputi penyalaan awal, laju pembakaran dan temperatur pembakaran. Adapun sampel briket yang digunakan dengan memvariasikan berupa bentuk segi empat dan enam, mesh 20 dan mesh 40 dan tekanan cetak briket sebesar 50 kg/cm2 dan 100 kg/cm2. Hasil menunjukkan temperatur tertinggi dimiliki briket segi empat dengan mesh 40 dan kekuatan tekan 50 kg/cm2 sebesar 4120C dan yang terendah dimiliki briket segi empat dengan mesh 20 dengan kekuatan tekan 100 kg/cm2 sebesar 333,330C. Semakin rendah tekanan pencetakan penyalaan awal semakin cepat dan laju pembakaran lebih lama karena ada rongga udara dan tingginya tekanan pencetakan mempengaruhi lamanya proses pembakaran.
ANALISIS PROSES PIROLISIS LIMBAH PLASTIK HDPE DAN PET: PENGARUH TEMPERATUR DAN WAKTU REAKSI DALAM UPAYA DAUR ULANG PLASTIK Sabitah, A yan; Ardiyat, Ichwan Noor; Misbachudin, Misbachudin; Wusko, Ikna Urwatul; Ningsih, Rahma Pitria
Scientific Journal of Mechanical Engineering Kinematika Vol 9 No 1 (2024): SJME Kinematika Juni 2024
Publisher : Mechanical Engineering Department, Faculty of Engineering, Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/sjmekinematika.v9i1.318

Abstract

Plastic waste is a significant environmental challenge, but its management is still not fully effective. Common methods such as garbage disposal, combustion, and recycling have their limitations, especially the release of harmful compounds during low-temperature plastic burning. Therefore, research continues to look for better solutions. One promising approach is pyrolysis, a process in which plastic molecules break down at high temperatures in an inert gas environment. Pyrolysis produces solid, liquid, and gas products, with liquids potentially functioning as biofuels after further repairs. The study discussed the influence of temperature and time on the pyrolysis of HDPE and PET plastics. The results showed that temperature is a critical factor, with a limited reaction temperature between 500 °C and 700 °C. Results of the pyrolyse process include tar/liquid and char/ solid residues. Strangely, 3 kg HDPE produce the highest amount of tar, about 973 ml, while 3 kg PET produce the least, about 89 ml. Overall, achieving a uniform heat distribution and optimal temperature is crucial to improving the efficiency and quality of the pirolysis product.
Co-Authors Ahmad Robittah Akhmad Syarief Akhmad Syarief Ali Abrar, Ali Apip Amrullah Ardiyat, Ichwan Noor Arwin Dhiyaul Haq, M. Daffa Dinata, Ryan Dwimas, Herdian Fadliyanur, Fadliyanur Galang P, Defrihans Hendra Dani Saputra Ichwan Noor Ardiyat ilham yuliady Junipitoyo, Bambang Luqmanul Hakim Marali, Aryati Marali, Aryati Muhaymin Misbachudin Misbachudin, Misbachudin Moch. Agus Choiron Moh. Sulhan Muhammad Nizar Ramadhan Napitulu, Hansen Rivaldo Ningsih, Rahma Pitria Noor Ardiyat, Ichwan Noor Rahman, Noor Noraidi Maulana , Antan Nugroho, Dafian Dwi Rabiatul Adawiyah Raliannoor Raliannoor Ramadhasari, Aulia Aufa Ricky Indriyanto Ridwan, Ridwan Robittah, Ahmad Samosir, Devina Sanchia Setyo Hariyadi Suryanta, Dhanu Suryanta Suudy, Ahmad Hamim Teguh Dwi Widodo Wahyono Suprapto Wirawan , Willy Artha Wirawan, Willy Artha Wusko, Ikna Urwatul Yogi Dian Alfana Yudistira Bayu Setiambodo Yusrina, Yasmin Zulfati Zulkifli Zulkifli