| Austenite grain growth calculation of 0.028% Nb steel D Priadi, RAM Napitupulu, ES Siradj Journal of Mining and Metallurgy, Section B: Metallurgy 47 (2), 199-209, 2011 | 27 | 2011 |
| Field tests of a natural vacuum solar desalination system using hybrid solar collector EY Setyawan, RAM Napitupulu, P Siagian, H Ambarita IOP Conference Series: Materials Science and Engineering 237 (1), 012012, 2017 | 24 | 2017 |
| Analisa Kekuatan Bahan Komposit Yang Diperkuat Serat Bambu Menggunakan Resin Polyester Dengan Memvariasikan Susunan Serat Secara Acak Dan Lurus Memanjang R Manurung, S Simanjuntak, J Sembiring, RAM Napitupulu, S Sihombing Sprocket Journal of Mechanical Engineering 2 (1), 28-35, 2020 | 19 | 2020 |
| Influence of heating rate and temperature on austenite grain size during reheating steel RAM Napitupulu IOP Conference Series: Materials Science and Engineering 237 (1), 012038, 2017 | 15 | 2017 |
| Effect of Equal Channel Angular Pressing and Post Heating on Microstructure and Hardness of Cu-Zn 70/30 S Suryadi, RAM Napitupulu, D Priadi, A Suhadi, ES Siradj Advanced Materials Research 789, 373-378, 2013 | 11 | 2013 |
| Pengaruh Temperatur dan Waktu Pelapisan Terhadap Laju Pelapisan Nikel Pada Baja Karbon Rendah RAM Napitupulu Jurnal Teknik SIMETRIKA 4, 235-351, 2005 | 10 | 2005 |
| Pengaruh Material Monokristal dan Polikristal Terhadap Karakteristik Sel Surya 20 Wp dengan tracking sistem Dua Sumbu RAM Napitupulu, S Simanjuntak, S Sibarani LPPM Universitas HKBP Nommensen Medan, 2017 | 9 | 2017 |
| Slicing methodology of a cad file for 3d printing F Marbun, RAM Napitupulu, CSP Manurung, S Simanjuntak, YC Kao IOP Conference Series: Materials Science and Engineering 852 (1), 012074, 2020 | 7 | 2020 |
| Friction stir welding of aluminium alloy 6061-t651 RAM Napitupulu, SLMH Simanjuntak, C Manurung, C Hutabarat, ... IOP Conference Series: Materials Science and Engineering 508 (1), 012064, 2019 | 7 | 2019 |
| Pengaruh material monokristal dan polikristal terhadap karakteristik panel surya 20 WP RAM Napitupulu J. Poliprofesi 12, 61-67, 2017 | 7 | 2017 |
| Karakteristik Sel Surya 20 Wp Dengan Dan Tanpa Tracking System RAM Napitupulu, S Simanjuntak, R Pandiangan Jurnal Teknik Nommensen 2 (1), 2016 | 7 | 2016 |
| Matematika Dasar ME Sari, N Hasanah, ON Purba, RAM Napitupulu, WM Kelen, ... Global Eksekutif Teknologi, 2022 | 6 | 2022 |
| Rancangan Fasilitas Pembangkit Listrik Tenaga Sampah: Studi Kasus di Kota Medan Sumatera Utara JP Simanjuntak, RAM Napitupulu, P Lumbangaol SPROCKET JOURNAL OF MECHANICAL ENGINEERING 3 (2), 84-93, 2022 | 6 | 2022 |
| Geometry fin performance in vacuum desalination system condenser tubes using low temperature EY Setyawan, YI Nakhoda, P Siagian, RAM Napitupulu IOP Conference Series: Materials Science and Engineering 852 (1), 012045, 2020 | 6 | 2020 |
| Flat plate type solar collector performance using double thermal insulation EY Setyawan, A Kurniawan, F Rahmadianto, RAM Napitupulu, P Siagian IOP Conference Series: Materials Science and Engineering 852 (1), 012044, 2020 | 5 | 2020 |
| Experiemental study on solar dryer with extended flat plate collector A Qadry, T Hutagalung, KJM Harry, RAM Napitupulu, H Ambarita IOP Conference Series: Materials Science and Engineering 725 (1), 012018, 2020 | 5 | 2020 |
| Analisa Kekuatan Tarik dan Kekerasan Komposit Resin Polyester yang Diperkuat dengan Serat Pohon Aren (Ijuk) dengan Variasi Acak, Lurus dan Terputus-Putus Pendek B Sinaga, CSP Manurung, RAM Napitupulu, M Tampubolon, S Sihombing Citra Sains Teknologi 1 (2), 50-58, 2022 | 4 | 2022 |
| The effect of used lubricating oil volume as a binder on the characteristics of briquettes made from corn cob and coconut shell. RAM Napitupulu, S Ginting, W Naibaho, S Sihombing, N Tarigan, ... IOP Conference Series: Materials Science and Engineering 725 (1), 012010, 2020 | 4 | 2020 |
| Analysis of temperature and velocity distributions in a solar drying box coffee beans P Siagian, FH Napitupulu, EY Setyawan, L Siagian, RAM Napitupulu, ... IOP Conference Series: Materials Science and Engineering 420 (1), 012035, 2018 | 4 | 2018 |
| Laju Keausan dan Kekerasan Kampas Rem Pada Sistem Pengereman Sepeda Motor RAM Napitupulu, CSP Manurung, C Sembiring SPROCKET JOURNAL OF MECHANICAL ENGINEERING 4 (1), 10-19, 2022 | 3 | 2022 |
