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All Journal Rotasi JITEK (Jurnal Ilmiah Teknosains) Industria: Jurnal Teknologi dan Manajemen Agroindustri JURNAL SIMETRIK Turbo : Jurnal Program Studi Teknik Mesin INOVTEK POLBENG Jurnal Serambi Engineering TEKNOLOGI PANGAN : Media Informasi dan Komunikasi Ilmiah Teknologi Pertanian Jurnal Sistem Teknik Industri Journal of Information Systems and Informatics Journal of Applied Engineering and Technological Science (JAETS) JTRM (Jurnal Teknologi dan Rekayasa Manufaktur) Jurnal Riset Teknologi Pencegahan Pencemaran Industri Media Perspektif Journal of Applied Mechanical Engineering and Renewable Energy (JAMERE) INJECTION: Indonesian Journal of Vocational Mechanical Engineering Politeknosain Bakti Hayati Jurnal Teknik Mesin Jurnal Merah Putih Sekolah Dasar
Muh Anhar
Politeknik Negeri Ketapang
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mathematics Mechanical Engineering Medicine & Pharmacology Social Sciences Transportation Veterinary Other

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PENGARUH VARIASI MEDIA PENDINGIN TERHADAP NILAI KEKERASAN PADUAN GEAR SPROCKET AISI 1020 DENGAN TIMAH MELALUI HEAT TREATMENT Anhar, Muh Aan
JURNAL SIMETRIK Vol 10 No 1 (2020): Jurnal Simetrik (Sipil, Mesin, Listrik)
Publisher : Pusat Penelitian dan Pengabdian Kepada Masyarakat (P3M) Politeknik Negeri Ambon

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31959/js.v10i1.377

Abstract

Study the effect of cooling media variations on the hardness value of AISI 1020 gear sprocket alloys and tin with heat treatment. This research is to find out the combination of AISI 1020 gear sprocket with tin, with a heat treatment process carried out with temperatures reaching 700ºC and held for 15 minutes, with air conditioning media, SAE 40 oil and water, and carried out heat treatment with hardness testing on each material with differences in the cooling media using the Rockwell method. From the results of the test, different cooling media, different cooling rates are obtained and produce different hardness changes. In testing the data obtained in accordance with the results of heat treatment which is continued by cooling the air gives the lowest hardness value (51.2 HR), while cooling with oil and water is higher, respectively 54 HR and 58.4 HR.
Perancangan Mesin Pencacah Pelepah Kelapa Sawit Bangun Titis Afiludin; Muh Anhar; Hairian Rahmadi; Dewi Nurmayasari
JTM : JURNAL TEKNIK MESIN Vol 2 No 1 (2026)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/t1x19z04

Abstract

Mesin pencacah pelepah kelapa sawit adalah mesin yang digunakan untuk mempermudah saat pengolahan. Prinsip kerja mesin ini merupakan metode gaya gesek, dimana motor listrik meneruskan putaran pada poros, pulley, v-belt dan bearing. Pada poros didalam cover  berisi mata pisau,. hasil spesifikasi alat yang telah dirancang menggunakan AutoCAD 2007 adalah sebagai berikut: Dimensi rangka 900 mm × 820 mm × 500 mm, diameter cover atas Ø430 mm × 360 mm, dimensi cover bawah 730 mm × 360 mm × 390 mm × 45°, panjang mata pisau 250 mm × 100 mm × 8 mm. Menggunakan motor bensin 5 HP, menggunakan sistem transmisi tunggal dengan 2 buah pulley 1:2, 2 buah v-belt berdampingan, satu buah poros dan dua buah bearing duduk
Studikasus Sistem Perawatan Genset Perkins 45 Kva Di PT. Agro Lestari Mandiri Ntye, Nanga Tayap Haykal Aristio; Muh Anhar; Yusuf
JTM : JURNAL TEKNIK MESIN Vol 2 No 1 (2026)
Publisher : Pengelola Jurnal Politeknik Negeri Ketapang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.58466/dy08w793

Abstract

Penelitian ini menganalisis studi kasus sistem perawatan genset perkins 45 kVa di PT. Agrolestari mandiri NTYE, Nanga Tayap, yang berfungsi sebagai sumber listrik utama untuk operasional perusahaan. Mengingat pentingnya peran genset, penelitian ini bertujuan untuk mengidentifikasi permasalahan umum dan mengevaluasi efektivitas program perawatan yang diterapkan.Metode penelitian kualitatif deskriptif digunakan dengan pendekatan observasi, wawancara, dan analisis data operasional. Hasil penelitian menunjukkan bahwa perawatan genset masih menghadapi beberapa kendala, termasuk masalah low power, overheat, kebocoran seal, dan keterlambatan penambahan coolant. Untuk mengatasi hal tersebut, perusahaan menerapkan perawatan preventif harian, mingguan, bulanan, dan tahunan yang berfokus pada pengecekan dan penggantian komponen esensial, serta penanganan kerusakan secara berjenjang.Hasil penelitian menunjukkan bahwa Genset Perkins 45 kVA di PT. Agrolestari Mandiri NTYE mengalami beberapa permasalahan utama, seperti low power, overheat, kebocoran seal, kerusakan pipa injeksi, dan ketidakstabilan RPM. Faktor penyebabnya meliputi radiator yang kotor, gangguan pada relay, serta keterlambatan penambahan coolant yang menurunkan efisiensi sistem pendinginan. Frekuensi service rutin yang rendah (dua kali dalam 1,5 tahun) menunjukkan pola pemeliharaan preventif yang belum optimal, sehingga meningkatkan frekuensi perbaikan korektif dan penggantian komponen penting seperti water house, air cleaner, radiator, fuel filter, dan v-belt. Kondisi tersebut mengindikasikan adanya keausan dini akibat kurangnya pencegahan dan pemantauan kondisi komponen. Oleh karena itu, penerapan sistem preventive maintenance yang lebih disiplin dan terjadwal diperlukan untuk menjaga performa serta memperpanjang umur pakai genset
ANALISIS PERMASALAHAN KESULITAN MEMBACA PADA SISWA KELAS IV SD PELANGI MEDAN TEMBUNG Silalahi, Jernita Damayanti; Sinaga, Fajar Riska; Puri Kesuma, Keysha Argadia; Nur, Khairiah; Sihombing, Firtswin; Anhar, Muh
Jurnal Merah Putih Sekolah Dasar Vol. 1 No. 6 (2024): JULI 2024
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/jmpsd.v1i6.61386

Abstract

The purpose of this study was to determine the reasons behind the reading difficulties experienced by elementary school students, as well as the effects of implementing tutoring and tutoring. This type of research combines elements of descriptive and qualitative research. Data triangulation is the process of collecting data through documentation, interview, and observation techniques. Techniques for data analysis include data reduction, data visualization, and conclusion or verification. The findings of this study show that students' reading difficulties due to internal and external factors, such as students' lack of ability to mix words, their inability to distinguish almost identical letters, and their inability to combine sentences, can affect their reading comprehension. Teachers can propose that students read for fifteen minutes during class and work with their parents as a solution. Keywords: Causes, Reading Difficulty, Elementary School Children
Co-Authors Abdul Halim Adha Panca Wardanu Adha Panca Wardanu, Adha Panca Adiksa, Ekklesia Christian Adriansyah Adriansyah Akmal Akmal Alamsyah, Taqdir Alexandro Grandy, Yoseph Amri, Chairul Anggani Putra Asep Asep Asep Ruchiyat Bangun Titis Afiludin Chandra Dwiaji, Yudhi Danial - Darsini Desmon Hamid Dewi Nurmayasari Dina Prasetia, Gilang Edi Sofyan, Edi Eko Saputro Epriyandi, Epriyandi Ferry Setiawan Ferry Setiawan Fery Setiawan Hairian Rahmadi Hairian Rahmadi Haykal Aristio Helanianto Helanianto, Helanianto Indardi Indardi Ismael Ismael Ismael Marjuki Kalsum, Syarifah Umi Khairunnisa Khairunnisa Laksana, Lintang Bayu Adi Mangkona Mangkona Mohammed Taaqbier Muhadi Muhammad Bima Satria Muhammad Normansyah Normansyah Nur, Khairiah Nurato NURMAYASARI, DEWI Polonia, Betti Ses Eka Puri Kesuma, Keysha Argadia Putra, Syarif Abdian Randika Randika Rizqia Lestika Atimi . Ruchiyat, Asep Sartika . Septiane, Faradiba Sihombing, Firtswin Silalahi, Jernita Damayanti Sinaga, Fajar Riska Suhelmidati, Etri Suroso, Indreswari Susanto, Anto Taaqbier, Mohammed Wicaksono, Dhimas Yudi Sukmono, Yudi Yuli Yetri Yusuf Yusuf Yusuf Yusuf Yusuf