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All Journal Traksi : Majalah Ilmiah Teknik Mesin Proceeding SENDI_U Jurnal Teknik Mesin Jurnal Rekayasa Mesin Wahana Ilmuwan Jurnal Rekayasa Material, Manufaktur & Energi Jurnal Ilmiah Teknik Mesin "MEKANIK" Majamecha Jurnal ABDINUS : Jurnal Pengabdian Nusantara Journal of Welding Technology Quantum Teknika Civitas Ministerium: Jurnal Pengabdian Kepada Masyarakat Journal of Mechanical Engineering ARMATUR : Artikel Teknik Mesin dan Manufaktur Business and Investment Review Jurnal Foundry Mars: Jurnal Teknik Mesin, Industri, Elektro dan Ilmu Komputer
Nani dkk. Mulyaningsih
Jurusan Teknik Mesin, Program Studi Teknik Mesin, Universitas Tidar, 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 Education Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences

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Pengaruh Posisi Pengelasan dan Gerak Eletroda Terhadap Kekuatan Sambungan Las Baja SS400: Pengaruh Posisi Pengelasan dan Gerak Eletroda Terhadap Kekuatan Sambungan Las Baja SS400 Kusnadi, Khoirur rojikin; Nani Mulyaningsih; Fuad Hilmy
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 5 No. 2 (2024): ARMATUR: Artikel Teknik Mesin dan Manufaktur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v5i2.6519

Abstract

SS400 steel can be used to make car bodies. Welding is needed to connect car body parts. Welding is a method of joining metals. The most common type of welding is SMAW welding, where the electrode functions as a filler metal during the joining process. In the welding system there are several electrode positions and movements, the focus point of this research is the strength of 400 steel welded joints which involve various horizontal and vertical welding positions as well as straight and C-type electrode movements during welding. The results of the research show that specimens in vertical welding position and electrode movement C have the highest joint strength value of 282.5 MPa, while specimens in horizontal welding position and straight electrode movement have the lowest value of 184.9 MPa. The criterion value for car body strength is in the range of 190–290 Mpa. Judging from the research data, the strength value is met.
Analisis Variasi Desain Rangka Sepeda Motor Listrik Terhadap Kekuatan Rangka dengan Ansys Workbench Mulyaningsih, Nani; Ramadhani, Wahyuchandra; Hastuti, Sri
Rekayasa Material, Manufaktur dan Energi Vol 6, No 1: Maret 2023
Publisher : Fakultas Teknik UMSU

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30596/rmme.v6i1.12680

Abstract

Designing a fuel-based electric motorcycle frame needs to be modified to be able to place electrical components. Design and simulation of frame design variations are needed to obtain optimal frame strength by having the lowest stress, lowest deformation, and highest safety factor. The research objective is to obtain a frame design with optimal frame strength. The research method uses a comparative method in the form of three frame design variations simulated by Ansys Workbench. The frame simulation uses two types of loads, namely normal loads (146.2 kg) and heavy loads (316.2 kg). The simulation material uses AISI 4130 material. The selected and optimal frame design is the frame with the lowest maximum von Mises stress value and not more than the yield stress, the lowest maximum total deformation, and the highest minimum safety factor and 2.5. From the research results, it was found that design 2 was the design with the best strength compared to design 1 and design 3. Simulation with normal load (146.2 kg) obtained a maximum von Mises stress of 50.38 MPa, maximum total deformation of 0.036 mm, minimum safety factor of 8.237. While the heavy load simulation (316.2 kg) obtained a maximum von Mises stress of 144.64 MPa, a maximum total deformation of 0.863 mm, a minimum safety factor of 2.869.
The Influence of Sustainable Marketing and Brand Image on Purchase Decision on Brands Sejauh Mata Memandang Mulyaningsih, Nani; Tobing, Rudy P.
Business and Investment Review Vol. 1 No. 4 (2023)
Publisher : CV. Lenggogeni Data Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.61292/birev.v1i4.30

Abstract

The increasing development of the fashion industry in Indonesia has a major impact on improving the economy as well as environmental and social issues because it threatens global sustainability. This has encouraged fashion industry players to shift their marketing concept to a more sustainable one to create a positive brand image as well as encourage purchase decisions. This study aims to determine the effect of sustainable marketing and brand image on purchase decisions for the brand Sejauh Mata Memandang. This research was conducted using a quantitative approach and explanatory research design with a sample of 142 respondents. The instrument used is a questionnaire or questionnaire. The test instrument used is the validity test and reliability test. Data analysis used is descriptive analysis, with hypothesis testing using multiple linear regression tests, t tests, f tests, and the coefficient of determination. The results of the study show that (1) sustainable marketing has no significant effect on purchase decision (2) brand image has no significant effect on purchase decision (3) sustainable marketing and brand image have no significant effect on purchase decision. There are several factors that cause the hypothesis in this study to be rejected including the lack of awareness of respondents on sustainable issues, the gap between intentions and actions, product quality, personal style, and the influence of well-known figures. This research is limited because it is only done on fashion brands Sejauh Mata Memandang.
Pengaruh Tebal Core Serat Dendrocalamus Asper Terhadap Ketangguhan Impak Bahan Komposit Dengan Filler Partikel Montmorillonite Wicaksono, Ari; Setyo H. D, Adityo Noor; Mulyaningsih, Nani
Majamecha Vol. 6 No. 2 (2024): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v6i2.3442

Abstract

Pada saat ini serat yang sering digunakan  serat fiberglass, Akan tetapi limbahnya cukup sulit untuk terurai. Penggunaan serat alam merupakan salah satu alternatif dalam pembuatan komposit, salah satunya serat bambu yang memilii kekuatan mekanik yang baik. Tujuan pada penelitian ini untuk mengetahui sifat mekanis dan sifat fisis pada komposit serat bambu petung dengan filler campuran serbuk genteng sokka. Komposit dibuat menggunakan metode hand lay up dengan variasi tebal core 2 mm dan 4 mm, arah serat vertikal dan horizontal serta fraksi volume filler 10%, 20%, dan 30%.Hasil penelitian menunjukkan nilai harga impak terbesar terdapat pada variasi B4205 dengan nilai 0,0152 J/mm2. Sedangkan nilai harga impak terendah terdapat pada variasi A2303 dengan nilai 0,0018 J/mm2. Jika dilihat pada foto makro terlihan matriks rich, void, dan fiber pull out yang menyebabkan kekuatan mekanik dari komposit menjadi kurang baik.
Pemanfaatan Limbah Footstep Bekas Sebagai Material Alternatif Untuk Produk Footstep di Pasaran Zuhaeri, Nofal; Mulyaningsih, Nani; Nurhadi, Nurhadi
Majamecha Vol. 6 No. 2 (2024): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v6i2.3507

Abstract

Pentingnya prinsip ekonomi sirkular dan berkelanjutan mendorong pencarian solusi inovatif untuk memanfaatkan limbah industri. Salah satu solusi yang dapat diambil adalah mendaur ulang footstep bekas untuk dijadikan bahan alternatif pembuatan footstep baru yang siap bersaing di pasaran. Dengan teknologi anodizing, limbah footstep dapat diproduksi kembali tanpa mengurangi kualitas fungsionalnya sebagai footstep sepeda motor. Penelitian ini bertujuan untuk mengkaji potensi pemanfaatan limbah footstep bekas sebagai material alternatif yang ekonomis untuk memenuhi kebutuhan pasar. Penelitian ini menggunakan variasi kuat arus 1 Ampere, 1.5 Ampere, 2 Ampere, 2.5 Ampere dan 3 Ampere. Hasil penelitian yang dilakukan menunjukan bahwa material footstep termasuk aluminium seri 5XXX dengan kandungan unsur (Mg) yang dominan yaitu sebesar 5,55% dan unsur (Al) sebesar 91,67%. Nilai kekasaran rata-rata dengan nilai kekasaran terendah pada variasi kuat arus 2 Ampere sebesar 0,946 µm dan kekasaran tertinggi pada variasi 1 Ampere sebesar 1,246 µm. Hasil SEM menunjukkan permukaan sampel tertutupi dengan lapisan berwarna warna abu-abu cerah dan terbentuk porositas yang menunjukkan bahwa permukaan aluminium yang telah terlapisi katoda.
Potensi Penggunaan Limbah Kendaraan Bekas Melalui Teknologi Anodizing Mulyaningsih, Nani; Mujiarto, Sigit; Listyanda, Faiz; Rahayu, Yunita; Salim, M. Faiz
Majamecha Vol. 6 No. 2 (2024): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v6i2.3520

Abstract

Proses anodizing merupakan teknik yang efektif dalam meningkatkan ketahanan korosi aluminium melalui pembentukan lapisan oksida pelindung. Penelitian ini bertujuan untuk mengoptimalkan proses anodizing pada footrest aluminium bekas untuk meningkatkan daya tahannya terhadap korosi, sehingga dapat dimanfaatkan kembali sebagai produk dengan umur pakai yang lebih panjang. Menggunakan variasi waktu  (7, 14, 23, 32, 42 menit), arus 2,5A dan tegangan 18 Volt. Uji ketahanan korosi dilakukan dengan metode potensiodinamik untuk mengevaluasi performa footrest setelah anodizing. Hasil penelitian menunjukkan bahwa optimalisasi proses anodizing dapat secara signifikan meningkatkan  ketahanan korosi footrest bekas sebesar 0,0234491mmpy. Proses ini memungkinkan pemanfaatan kembali footrest aluminium bekas sebagai produk yang lebih tahan terhadap kerusakan lingkungan, serta mendukung pengurangan limbah logam.
Analisis Metode Anodizing Aluminium dengan Variasi Kuat Arus sebagai Material Velg Kendaraan Nani Mulyaningsih; Muhammad Noor Faishal Zakiy; Ikhwan Taufik
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol. 5 No. 2 (2024): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v5i2.21836

Abstract

Aluminum Alloy 6061 is widely used in various engineering applications, including automotive vehicle wheels. The selection of aluminum alloy wheels involves aspects such as corrosion resistance. To enhance corrosion resistance, there are several methods, one of which is anodizing. Anodizing is a process that involves an electrolytic coating process that transforms the surface of aluminum into aluminum oxide (Al2O3), which the main process of aluminum anodizing requires a solution of sulfuric acid, chromic acid, or a mixture of sulfuric acid and oxalic acid. The sulfuric acid used must be concentrated acid, and acid is an oxidizing substance. The thickness of the oxide is approximately twice the thickness of the lost aluminum. The purpose of this research is to determine the characteristic such as surface roughness values, corrosion rates, and changes in morphology in Aluminum 6061 after undergoing anodizing. In this study, various current strengths were used, namely 0.75 Amperes, 1.5 Amperes, 2.25 Amperes, and 3 Amperes. The highest surface roughness value was obtained at 0.447 μm in the third specimen of the 0.75 Ampere variation, while the lowest was 0.075 μm in the first specimen of the 3 Ampere variation. The highest corrosion rate was observed in the 0.75 Ampere variation, with a rate of 17.724004 mpy, and the lowest was 0.0731653 mpy in the 3 Ampere variation. SEM results show that, in general, Aluminum 6061 tends to have a bright gray color, which is a surface that has been coated by cathode.
Sosialisasi Pemanfaatan Limbah Tahu Sebagai Proteksi Korosi Mulyaningsih, Nani; Rahayu, Yunita; Salim, Muhammad Faiz; Taufik, Ikhwan; Salahudin, Xander
Jurnal ABDINUS : Jurnal Pengabdian Nusantara Vol 9 No 2 (2025): Volume 9 Nomor 2 Tahun 2025
Publisher : Universitas Nusantara PGRI Kediri

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29407/ja.v9i2.24740

Abstract

Liquid waste from the tofu industry can lead to environmental pollution if not properly managed. However, this waste holds potential for innovative use, such as being repurposed as a corrosion control material. This Community Service activity aimed to educate tofu producers in Magelang Regency on processing tofu waste into materials for metal corrosion protection. The approach involved counseling sessions and practical demonstrations. The results showed that tofu waste could reduce corrosion on metal equipment by 40% compared to untreated equipment. The participants showed great enthusiasm, as the method proved practical and easy to apply. In conclusion, this activity significantly contributed to better tofu waste management, helping to minimize environmental pollution risks.
Identifikasi Cacat Sambungan Las SMAW Tipe Butt Joint Pada Material Baja SS400 Menggunakan Metode Liquid Penetrant Test Dan Ultrasonic Test Al Faiq, M Rauf; Hastuti, Sri; Hadi, Nur; Mulyaningsih, Nani
Journal of Welding Technology Vol 7, No 1 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jowt.v7i1.6930

Abstract

SMAW welding is a type of electric arc welding, where the electrode is melted by the heat generated from the electric arc between the electrode tip and the workpiece. The working principle of SMAW welding is to use heat from an electric arc to melt the base metal and the tip of the electrode coated with flux, which also functions as a filler material in the metal joining process. The purpose of this study is to determine the effect of variations in current strength and electrode type on the type of weld defects in SS400 steel material welding joints. In this study, weld defects identified from liquid penetrant testing showed six types of defects, namely crack, porosity, incomplete fusion, slag inclusion, over spatter, and undercut, while ultrasonic testing found four types of defects, namely crack, incomplete penetration, incomplete fusion, and slag inclusion. Liquid penetrant and ultrasonic testing data show that the welding process using currents of 120 A and 110 A with E7016 electrodes has the most defects, meanwhile, at a current of 100 A with E7018 electrodes, it is a welding parameter with weld results that are protected from welding defects. Based on the test data, it can be concluded that variations in current and electrode type affect the number and type of weld defects that appear, which are influenced by the welding process, the amount of current, the diameter and type of electrode, electrical polarity and penetration rate. These parameters in SMAW welding determine the efficiency and quality of metal joining results.
Efek Pewarnaan Pada Proses Anodizing Terhadap Stabilitas Warna Velg Kendaraan Hidayat, Ilyas; Mulyaningsih, Nani; Salahudin, Xander
Majamecha Vol. 7 No. 1 (2025): Majamecha
Publisher : Program Studi Teknik Mesin, Fakultas Teknik, Universitas Islam Majapahit, Mojokerto, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36815/majamecha.v7i1.3597

Abstract

Velg memiliki peran sebagai penopang beban dari kendaraan juga untuk membuat tampilan kendaraan menjadi lebih estetik. Tampilan yang membuat velg menjadi estetik salah satunya adalah warna. Masalah yang sering dengan kerusakan permukaan, seperti tergores, mengelupas dan pudar akibat paparan cuaca. Perlakuan permukaan diperlukan untuk meningkatkan ketahanan warna. Anodizing merupakan metode elektrolisis untuk memberikan tampilan velg menjadi estetik dengan warna yang dapat disesuaikan. Bahan pewarna anodizing yang mahal diperlukan bahan alternatif lain yang lebih terjangkau. Penelitian ini bertujuan untuk mengetahui komposisi kimia dan stabilitas warna. Proses pewarnaan menggunakan bahan pewarna tinta printer dan pewarna pakaian dengan variasi waktu pewarnaan 10 menit, 20 menit, dan 30 menit. Hasil pengujian komposisi menunjukkan komponen velg termasuk ke dalam aluminium seri 6763 dengan unsur mencapai 98,84%. Stabilitas warna terbaik diperoleh pada pewarnaan menggunakan tinta printer dengan kode warna red, green, blue (RGB) 0, 10, 5.
Co-Authors Abdul Rahman Wahid Ahmad Subri Arizal Al Faiq, M Rauf Ari Wicaksono Arief Prasetyo Arif Rahman Saleh Ayub Adi Darmawan Aziz , Syahrul Fatchul Budiono, Herru Santosa Cahya Ramadani, Pradipta Ihza Catur Pramono Choirul Choirul Faisal Arif Riza Majid Fuad Hilmy Gilang Fitra Sanubari Gyani Ubaydillah Hadyan Hadyan Hanung Hermawan Hasan Zuhdi Hasugian, Panca Putra Hidayat, Ilyas Huda, Dimas Nur Amirul Ida Ayu Putu Sri Widnyani Isro Nurul Hadi Kafi Yusuf Kafi Kun Suharno Kun Suharno Kusnadi, Khoirur rojikin Listyanda, R. Faiz Mudabbirul Hakim Mufti Syafi’i Muhammad Abiyyu Raafi Muhammad Noor Faishal Zakiy Nur Hadi Nur Kholis Nur Subkhan Nurhadi Prakoso, Aditya Win Rachman Satya Pamungkas Rahayu, Yunita Ramadhani, Wahyuchandra Ranny Puspita Dewi Ryan Try Prasetyo Salim, M. Faiz Salim, Muhammad Faiz Setyo H. D, Adityo Noor Sigit Mujiarto Sri Hastuti Sri Hastuti Sri Widodo Sri Widodo Taufik, Ikhwan Tegar Armanto Tobing, Rudy P. Trisma Jaya Saputra Wahyuchandra Ramadhani Xander Salahudin Yanuar, Mochamad Riyanto Yudhistira, Dida Ardito Yulianto, Dany Dwi Yusuf Nuruk Nuruk Zuhaeri, Nofal