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All Journal Jurnal Transportasi Rekayasa Mesin Jurnal Rekayasa Mesin Journal of Energy, Mechanical, Material and Manufacturing Engineering CANTILEVER Jurnal Elemen Prosiding SNITP (Seminar Nasional Inovasi Teknologi Penerbangan) Jurnal Perkeretaapian Indonesia (Indonesian Railway Journal) E-Link: Jurnal Teknik Elektro dan Informatika International Journal of Mechanical Engineering Technologies and Applications (MECHTA) TEKIBA : Jurnal Teknologi dan Pengabdian Masyarakat Prosiding Seminar Nasional Sains Teknologi dan Inovasi Indonesia (Senastindo) Mechanical Engineering for Society and Industry Madiun Spoor : Jurnal Pengabdian Masyarakat Automotive Experiences Eksergi: Jurnal Teknik Energi Jurnal Pengabdian Kepada Masyarakat Semangat Nyata Untuk Mengabdi Journal of Railway Transportation and Technology Berkala Forum Studi Transportasi antar Perguruan Tinggi Jurnal Penelitian Transportasi Darat
Wirawan, Willy Artha
Universitas Negeri Surabaya, Indonesia
Aerospace Engineering Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Public Health Social Sciences Transportation Other

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ANALISIS PERBANDINGAN LEAN CONCRETE DAN CEMENT TREATED BASE (CTB) SEBAGAI LAPISAN STABILIZED BASE MENGGUNAKAN SOFTWARE FAARFIELD UNTUK PERLUASAN APRON B DI BANDAR UDARA DJALALUDDIN GORONTALO Artha Wirawan, Willy; Rozi, Fahrur; Luqman Afandi, Muhammad
Prosiding SNITP (Seminar Nasional Inovasi Teknologi Penerbangan) Vol. 9 No. 1 (2025): SNITP 2025
Publisher : Politeknik Penerbangan Surabaya

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

Abstract

Apron B Bandar Udara Djalaluddin Gorontalo merupakan area strategis untuk pergerakan pesawat yang direncanakan diperluas sebesar 38.016 m² untuk mendukung status Embarkasi Haji Penuh (EHP) sehingga harus mampu melayani Pesawat Boeing 777 300ER. Salah satu komponen penting perkerasan kaku adalah lapisan stabilized base, di mana dua material yang umum digunakan yaitu lean concrete dan cement treated base (CTB) harus dievaluasi untuk menentukan opsi yang paling optimal dan efisien dari segi struktur dan ekonomi. Metode yang digunakan dalam penelitian ini adalah metode kuantitatif komparatif, yang dilakukan dengan mengolah data numerik serta membandingkan dua jenis material stabilized base melalui simulasi menggunakan software FAARFIELD. Analisis dilakukan untuk memperoleh hasil perbandingan ketebalan struktur perkerasan, nilai PCN, serta estimasi biaya konstruksi. Hasil analisis menunjukkan bahwa struktur dengan lean concrete memiliki total ketebalan 793 mm dan menghasilkan nilai PCN sebesar 117 R/B/W/T, sedangkan struktur dengan CTB memiliki total ketebalan 795 mm dengan nilai PCN 118 R/B/W/T. Dari sisi biaya, rencana anggaran biaya untuk struktur perkerasan kaku apron B dengan menggunaan lean concrete pada lapisan stabilized base mencapai Rp 96,406,624,950, sedangkan penggunaan CTB lebih ekonomis sebesar Rp 95,350,273,103. Kedua alternatif memenuhi syarat kekuatan struktur (PCN > ACN), namun CTB menawarkan kombinasi terbaik antara performa dan efisiensi biaya untuk lapisan stabilized base Apron B.
Advanced computational techniques for predicting 3D printing distortion in selective laser melting processes of Aluminium AlSi10Mg Moch. Agus Choiron; Anindito Purnowidodo; Achfas Zacoeb; Gembong Edhi Setyawan; Willy Artha Wirawan; Yudhi Ariadi; Allan E.W. Rennie; Diva Kurnianingtyas
Mechanical Engineering for Society and Industry Vol 5 No 1 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.12581

Abstract

Distortion for 3D printing using Selective Laser Melting (SLM) on AlSi10Mg aluminium is an important issue that affects the final manufactured product. This research aims to develop a finite element method (FEM)-based computational simulation and experimental validation to predict distortion in 3D printed products using SLM. The study results found that the variation of 3D printing position affects the resulting product's distortion and mechanical properties. The 90° part print position results in smaller distortion of 0.303 and 0.335 mm than the 0° part print position of 0.329 and 0.378, respectively, making it more suitable for high-precision applications. This study confirms the importance of scan orientation in controlling distortion in the SLM process, which can be used as a guide for optimal printing parameters. With proper orientation selection, the risk of distortion or defects in SLM products can be minimised, and industrial production efficiency can be improved.
Evaluation of dimensional accuracy on SLM product using 3D laser scanner Moch. Agus Choiron; Anindito Purnowidodo; Achfas Zacoeb; Rosadila Febritasari; Willy Artha Wirawan; Imam Kusyairi; Johan Wayan Dika
Mechanical Engineering for Society and Industry Vol 5 No 2 (2025)
Publisher : Universitas Muhammadiyah Magelang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31603/mesi.13448

Abstract

Dimensional accuracy is a critical factor in additive manufacturing, especially in Selective Laser Melting (SLM). Recently, many studies had investigated the SLM process and products, but studies on the evaluation of SLM printing product to check the dimensional accuracy have not been explored. This study investigates the dimensional accuracy of SLM products by employing a 3D laser scanning technology and evaluate the compatibility between CAD designs and the final SLM printed products. The 3D laser scanning is performed using a high-precision 3D laser scanner, then continued by comparison with the CAD model through Geomagic Control X software. Dimensional accuracy was measured using visual and statistical parameters such as color graphic and deviation. Results showed that deviation of SLM printed products was within the tolerance range of ±0.1 mm. The main factors that affect accuracy are printing laser speed and print orientation. The 3D laser scanning technology proved to be effective for evaluating the dimensional accuracy of SLM printed products. This study contributes to develop the quality control methods in the field of metal-based additive manufacturing.
The Effect of Adding Corn Cob Inhibitor to Primer Paint as a Corrosion Retardant On Train Roofs (Mild Steel SS 400) Akbar Zulkarnain; Edi Nyoto Setyo Marsusiadi; Achmad Sholih Zidni; Dadang Sanjaya Atmaja; Willy Artha Wirawan
Journal of Railway Transportation and Technology Vol. 5 No. 1 (2026): March
Publisher : Politeknik Perkeretaapian Indonesia Madiun

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37367/jrtt.v5i1.84

Abstract

Corrosion is one of the main problems that can reduce the quality and service life of steel materials in the railway industry, especially on train roofs made of SS400 mild steel. This study aims to examine the effectiveness of adding natural inhibitors from corn cob ash to epoxy primer paint in inhibiting the rate of corrosion and increasing the adhesive strength of the paint. The inhibitor was made through a process of extracting silica from corn cob ash and mixing it into the primer paint at various concentrations. Fourier Transform Infra Red (FTIR) testing was used to identify the silica content in the inhibitor, while testing was carried out on the adhesive strength using an adhesion tester and the corrosion rate using the weight loss test method in HNO₃ solution. The results showed that the addition of corn cob ash inhibitor formed a protective layer on the metal surface, improved paint adhesion, and significantly reduced the corrosion rate. This study demonstrates that the use of agricultural waste such as corn cobs as a natural inhibitor is an innovative, economical, and environmentally friendly solution for controlling corrosion in steel materials in the railway industry.
Co-Authors ,, Sunardi Achfas Zacoeb Achmad Sholih Zidni Adya Aghastya Adya aghastya Aghastya, Adya Ahmad Bahrawi, Ahmad Akbar Zulkarnain Akbar Zulkarnain Akhwan Akhwan Akhwan, Akhwan Akwan, Akwan Aldi Wardana Aldri Frinaldi Allan E.W. Rennie Anindira Listy Hartisa Anindito Purnowidodo Arief Darmawan Ary Putra Iswanto Astuti, Septiana Widi Balla Wahyu Budiarto Dadang Sanjaya Atmaja Damayanti, Ajeng Tyas Dhina Setyo Oktaria Diva Kurnianingtyas Edi Nyoto Setyo Marsusiadi Ekananta, Krisna Pramudya Ependi, Ahmad Fadli Rozaq Fadli Rozaq Fadli Rozaq Fahrur Rozi Fauzi, Wahyu Nur Febri Pandu Wijaya Gembong Edhi Setyawan Gunari, Bambang Gunarti, Monika Retno Hadi Prayitno Handoko Handoko Hari Boedi Wahjono Imam Kusyairi Imron, Nanda Ahda Iswanto, Ary Putra Johan Wayan Dika Junipitoyo, Bambang Lailya, Alvi Lutfyani Luqman Afandi, Muhammad Marwan Effendy Moch. Agus Choiron Moch. Agus Choiron Mukhlis Muslimin Muslimin, Mukhlis Nanda Ahda Imron Natriya Faisal Rachman Natriya Faisal Rachman Nurul Fitria Apriliani Oki Kurniawan Palungan, Musa Bondaris Pambudi, Ardhenta Sigit Pambudiyanto, Nyaris Pegah Hamedani Pradipta, Andri Prawoto, Agus Puspitasari, Mariana Diah Putra, Rafli Rianzah Rachman, Natriya Faisal Rafli Rianzah Putra Rahma, Muchamat Ardistiya Rezki Putra Ridwan, Ridwan Robittah, Ahmad Rosadila Febritasari Royyan Ghozali Rozaq, Fadli Rozaq, Fadli Sabitah, A'yan Sakti, Gunawan Santi Triwijaya Septiana Widi Astuti Setyo Hariyadi Sofyan Arief Sofyan Arief Setyabudi sunardi sunardi Sunardi Sunardi Sunardi Sunardi Suprapto Suprapto Suudy, Ahmad Hamim Suyatmo Teguh Arifianto Teguh Dwi Widodo Wahyono Suprapto Wahyu Tamtomo Adi Wahyu Tamtomo Adi, Wahyu Tamtomo Widodo, Teguh Dwi Wulansari, Ajeng Yudhi Ariadi Yustina Titin Purwantiningsih Zulkarnaen, Akbar Zulkarnain, Akbar