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All Journal POROS TEKNIK Jurnal Teknik Sipil Berkala Ilmiah Pendidikan Fisika Dinamisia: Jurnal Pengabdian Kepada Masyarakat Abdimas Dewantara THABIEA (JOURNAL OF NATURAL SCIENCE TEACHING) CARADDE: Jurnal Pengabdian Kepada Masyarakat Jurnal Tarbiyah : Jurnal Ilmiah Kependidikan JURNAL PENDIDIKAN MIPA Journal of Applied Engineering and Technological Science (JAETS) Jurnal ABDINUS : Jurnal Pengabdian Nusantara Bubungan Tinggi: Jurnal Pengabdian Masyarakat Literasi: Jurnal Pengabdian Masyarakat dan Inovasi INJECTION: Indonesian Journal of Vocational Mechanical Engineering
Polonia, Betti Ses Eka
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EFFECT OF MAGNESIUM TREATMENT PROCESS ON THE PRODUCING COMPACTED GRAPHITE CAST IRON WITH DIFFERENT CASTING THICKNESS Wiwik Purwadi; Tama Ramadhani; Betti Ses Eka Polonia; Yusuf Yusuf
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 1 No 2 (2021): Agustus 2021
Publisher : Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (422.152 KB) | DOI: 10.58466/injection.v1i2.117

Abstract

Strength, toughness, machinability and damping capacity are properties of compacted graphite iron that distinguish the properties between flake graphite cast iron and spheroidal cast iron. The formation of compacted graphite can be set to achieve the required specification. The formation of compacted graphite is started from spheroidal to compacted cast iron. The residual magnesium after magnesium treatment and the solidification rate have a significant role in the formation of compacted graphite. The high content of residual magnesium can obstruct the graphite plane to grow during the transformation from spheroidal to compacted shape. In addition, the cooling rate of the casting can be controlled by varying the casting thickness. The compacted graphite in the cast iron are characterized according to shape, size and distribution. The optimum compacted graphite in the cast iron that can be produced has 30 mm of casting thickness with 0.017 % of residual magnesium.  
RANCANG BANGUN MESIN PENGAYAK PASIR OTOMATIS Betti Ses Eka Polonia; Helanianto Helanianto; Hendri Kurniawan
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 2 No 2 (2022): Agustus 2022
Publisher : Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (490.982 KB) | DOI: 10.58466/injection.v2i2.702

Abstract

Sand is an important material in building construction for residential houses, places of worship, offices, educational facilities, and other buildings. Sand generally consists of sand mixed with gravel and stone. An automatic sand sieving machine makes separating rock gravel from sand easier. Making an automatic sand sieving machine aims to get better quality and cleaner sand screening results. This sand sifter machine is made to prevent the entry of gravel in the sieving process. In addition, the sand sieving process can be more efficient and effective. The automatic sand sieving machine has dimensions of 100 cm long, 70 cm wide, and 80 cm high. The test results of the sand sieving machine can sift sand with a capacity of 5 kg in 15 seconds and a sand capacity of 10 kg in 32 seconds.
MODIFIKASI DONGKRAK BOTOL DAN TREKER UNTUK MELEPAS BEARING MOTOR LISTRIK Ismael Marjuki; Helanianto Helanianto; Betti Ses Eka Polonia
Injection: Indonesian Journal of Vocational Mechanical Engineering Vol 2 No 1 (2022): Februari 2022
Publisher : Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/injection.v2i1.997

Abstract

This research modifies the bottle jack to remove the electric motor bearing of a water pump with a jack capacity of 2 tons. Bottle jacks are generally used to lift vehicles such as cars. The bottle jack can be modified so that it can be used as a bearing removal device. In general, the way to remove the bearing is still manual, namely by hitting it. The purpose of making this tool is to make it easier to remove the water pump electric motor bearing. The specifications of the tool are that it has a height of 16 - 27 cm. The width of the tool is 6 cm and the maximum pressure capacity of the bottle jack is 2 tons. The trial results of the bottle jack modification tool to remove the water pump electric motor bearings obtained an average time of 45 seconds.
Peningkatan Kompetensi Guru Melalui Pelatihan Penulisan Buku Ajar bagi MGMP IPA SMP Sarwendah Ratnawati Hermanto; Betti Ses Eka Polonia; Ahmad Ravi; Alfath Desita Jumiar
Bubungan Tinggi: Jurnal Pengabdian Masyarakat Vol 5, No 2 (2023)
Publisher : Universitas Lambung Mangkurat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/btjpm.v5i2.7445

Abstract

Pelatihan bertujuan memberikan pemahaman terkait tata cara menyusun buku ajar kepada guru-guru MGMP IPA. Selain itu, dilakukan pendampingan langsung untuk membuat rancangan buku ajar yang relevan serta sesuai dengan kebutuhan siswa. Metode yang digunakan adalah pelatihan partisipatif. Kegiatan pengabdian dilaksanakan pada bulan Oktober-November Tahun 2022 dengan jumlah peserta sebanyak 35 orang. Kegiatan pelatihan meliputi persiapan kegiatan (survei & koordinasi dengan mitra), pelaksanaan kegiatan (workshop pelatihan & pendampingan), dan evaluasi kegiatan (evaluasi ketercapaian kegiatan). Hasil kegiatan pengabdian ini adalah terdapat peningkatan pemahaman serta kemampuan peserta pelatihan dalam menyusun buku ajar. Selain itu, hasil dari kegiatan pengabdian ini yaitu satu draft buku ajar yang telah disusun oleh peserta pelatihan. Kegiatan ini merupakan langkah awal sebagai motivasi bagi guru-guru dalam menulis dan menyusun buku ajar berbasis Kurikulum Merdeka Belajar yang sesuai dengan kebutuhan siswa.The training aims to provide an understanding of the procedures for compiling textbooks for MGMP IPA teachers. In addition, direct assistance is provided to design relevant textbooks that meet students' needs. The method used is participatory training. Community service activities are carried out from October until November 2022 with 35 participants. Training activities include the presentation of material by resource persons and mentoring activities for preparing textbook drafts which are carried out face-to-face and online. The result of this service activity is an increase in understanding and ability to compile textbooks. In addition, the result of this community service activity is a draft textbook the training participants have prepared. This activity is the first step in motivating teachers to write and compile textbooks based on the independent learning curriculum that suits the needs of students.
KAJIAN PARAMETER MARSHALL LIMBAH CANGKANG ALE-ALE SEBAGAI FILLER CAMPURAN LAPIS ASPAL BETON Ahmad Ravi; Betti Ses Eka Polonia
Jurnal Teknik Sipil Vol 7 No 1 (2023): Jurnal Gradasi Teknik Sipil - Juni 2023
Publisher : P3M Politeknik Negeri Banjarmasin

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

Abstract

Pada proses perencanaan jalan, penggunaan material perkerasan menentukan kualitas mutu jalan yang dihasilkan. Bahan dasar untuk campuran aspal panas terdiri dari bahan agregat kasar, agregat halus, filler, dan aspal. Filler adalah suatu mineral agregat dari fraksi halus yang merupakan bahan non-plastis dan non-organik. Pada campuran aspal, filler berfungsi sebagai bahan pengisi rongga dalam campuran sehingga meningkatkan kepadatan dan ketahanan campuran serta meningkatkan stabilitas campuran. Penggunaan filler pada campuran aspal beton banyak diteliti untuk mendapatkan kinerja campuran yang baik dan ekonomis, namun untuk jenis bahan tertentu harganya dipasaran sudah mulai mahal dan susah ditemukan di daerah-daerah tertentu sehingga campuran aspal menjadi tidak ekonomis. Bagi masyarakat Kabupaten Ketapang, konsumsi ale-ale sebatas dagingnya, sehingga menghasilkan limbah cangkang yang banyak jumlahnya. Limbah cangkang ale-ale dapat bermanfaat dan digunakan sebagai filler dalam campuran aspal beton. Parameter Marshall pada campuran filler cangkang ale-ale 4% dan 8% yang memenuhi spesifikasi lapisan aspal AC-BC dan lapisan aspal HRS-WC adalah pada nilai kepadatan, nilai VMA, nilai stabilitas, nilai kelelehan, dan nilai MQ (Marshall Quotient). Parameter Marshall pada campuran filler abu batu 4% dan 8% yang memenuhi spesifikasi lapisan aspal AC-BC dan lapisan aspal HRS-WC adalah pada nilai kepadatan, nilai VMA, nilai stabilitas, nilai kelelehan, dan nilai MQ (Marshall Quotient).
Co-Authors 'Ain, Hurul Ahmad Nova Zulfahmi Ahmad Ravi Ahmad Ravi Alan Putranto Alan Putranto Alfath Desita Jumiar Asep Ruchiyat ‘Ain, Hurul Budi Pratomo Sibuea Darmanto Darmanto Dyah Indraswati Hafidha Asni Akmalia Helanianto Hendri Kurniawan Hurul 'Ain Hurul 'Ain Hurul Ain Ismael Marjuki Lia Yuliati M. Hanif Faisal M. Hanif Faisal Muh Anhar Ravi, Ahmad Sarwendah Ratnawati Hermanto Syf. Umi Kalsum Syf. Umi Kalsum Tama Ramadhani Wiwik Purwadi Yusuf Yusuf