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All Journal JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Jurnal Inovator Journal of Engineering and Applied Technology
Prihatno Kusdiyarto
Jurusan Pendidikan Teknik Mesin, Universitas Negeri Yogyakarta
Automotive Engineering Civil Engineering, Building, Construction & Architecture Education Electrical & Electronics Engineering Engineering Industrial & Manufacturing Engineering Mechanical Engineering Social Sciences

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Analisis Variasi Included Angle terhadap Distorsi pada Sambungan Las SMAW Prihatno Kusdiyarto; Riswan Dwi Djatmiko
Jurnal Dinamika Vokasional Teknik Mesin Vol. 3 No. 1 (2018): April
Publisher : Department of Mechanical Engineering Education

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/dinamika.v3i1.19112

Abstract

The aim of this study is to determine the effects of included angle dimension on the distortion of carbon steel V-groove butt joint using a single pass welding methods. Specimens being studied were AISI 1025 low carbon steel in the form of 1/2 inch-thick plates. The steels were easily weld and were assumed as homogeneous and isotropic; therefore, three specimens for each treatment are adequate. The experiment treated the v-groove shape as independent variable and the distortion as dependent variable. The results show that there is an effect of v-groove dimensions on the distortion of the carbon steels butt joint.. The distortion and their respective angle dimensions are 0.58Ëš for the 55Ëš angle, 0.78Ëš for the 60Ëš angle, and 1.02Ëš for the 65Ëš angle. The magnitude of the distortions are well below 3Ëš, which is the permissible amount for the butt joint distortion criteria.Tujuan penelitian ini untuk mengetahui ada tidaknya pengaruh dimensi included angle (bentuk kampuh) terhadap distorsi pada sambungan ujung baja karbon dengan metode pengelasan SMAW single pass. Dalam penelitian ini obyek yang diteliti adalah baja karbon rendah type AISI 1025 yang berupa plat strip dengan ketebalan 1/2 inchi. Baja jenis ini merupakan bahan yang mudah dilas dan diasumsikan homogen dan isotropic, sehingga sampel yang diambil cukup tiga buah pada masing-masing perlakuan. Bentuk included angle merupakan variabel bebas dan distorsi adalah variabel terikat. Hasil penelitian menunjukkan adanya pengaruh dimensi included angle terhadap distorsi pada sambungan ujung baja karbon. Besarnya distorsi pada sambungan dengan dimensi sudut 55Ëš sebesar 0,58Ëš, 60Ëš sebesar 0,78Ëš, 65Ëš sebesar 1,02Ëš. Hal ini memberikan informasi bahwa variasi sudut included angle tersebut menghasilkan distorsi di bawah 3Ëš, sehingga masih termasuk dalam batas yang diijinkan persyaratan kelolosan sambungan las.
Analysis of tensile strength and microstructure on GTAW- Aluminum 6061 welding results Ardani Ahsanul Fakhri; Basyirun Basyirun; Ahmad Fikrie; Prihatno Kusdiyarto
Journal of Engineering and Applied Technology Vol 3, No 2 (2022): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v3i2.53149

Abstract

The process of joining aluminum metal requires a special welding method. The use of GTAW welding is a suitable method for joining aluminum plates. This research is intended to analyze the tensile strength and microstructure of the GTAW Aluminum 6061 welding with various currents. The research method used in this research is experimental research. Welding current variations used in this study were 100A, 115A, and 130A, then tested using a destructive test, tensile test. The data analysis used in this study is descriptive analysis, where the data obtained are averaged and then described and concluded. The results of microstructure research on GTAW welding show that changes in the microstructure are very visible in the HAZ area and the weld metal, the greater the heat input, the more spread the Mg2Si grains will be. Good structural dispersion only occurs at 130A current. This is different from the base metal which does not change the material structure at all. Based on the tensile test, the tensile stress value is 80.9 MPa at 100 A current, 84.9 MPa at 115A current variation, and the highest tensile strength is 86.7 MPa at 130A current. So, it can be concluded that the higher the current used, the better the microstructure and tensile strength produced.
Performance analysis of the fabricated animal feed mixer machine Ardian, Aan; Wikantara, Astana Aji; Aditya, Zaky Ahmad; Kusdiyarto, Prihatno
Journal of Engineering and Applied Technology Vol. 5 No. 2 (2024): (August)
Publisher : Faculty of Engineering, Universitas Negeri Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21831/jeatech.v5i2.73308

Abstract

This research focused on the development of an animal feed mixer machine to improve mixing capacity. The research used an experimental model and involved need analysis, design, development, implementation, and evaluation. The goal was to determine the optimal rotational speed of a stirrer screw for different types of animal feeds as well as understand the stages of making the machine and its working principle. The process involved manufacturing the frame, shaft, transmission, screw fins, sheet metal process, and assembly. The results shows that the animal feed mixer machine with a stirring speed of 312.3 rotations/minute was able to produce 958.3 kg of feed in one hour. This stirring speed provides the best fuel consumption, which is 676.5 ml/hour. The mixer has a safe element on the reduction shaft, with 115.8 kg.mm of torque and 5.82 kW of power. Thus, this mixer is an efficient and productive solution for the animal feed industry.
Studi Evaluatif Terhadap Desain Mesin Perajang Pisang untuk Optimasi Ketebalan Rajangan dan Kapasitas Produksi Badranaya, Muhammad Imawan; Ulya, Richa Railil; Kusdiyarto, Prihatno; Sutopo, Sutopo
Jurnal INOVATOR Vol. 8 No. 1 (2025): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v8i1.474

Abstract

Ketebalan irisan pada produk keripik pisang merupakan parameter krusial yang menentukan kualitas akhir, termasuk tingkat kerenyahan, keseragaman warna, serta efisiensi proses pengolahan. Irisan yang terlalu tebal cenderung kaku dan sulit terpotong sempurna, sedangkan irisan yang terlalu tipis berpotensi rapuh. Oleh karena itu, pengaturan ketebalan irisan secara presisi menjadi aspek penting dalam proses perajangan. Penelitian ini bertujuan merancang sistem perajangan pisang dengan mekanisme pengaturan ketebalan berbasis posisi lubang pengunci cutter pada dies. Melalui variasi jarak pisau (3 mm, 3,5 mm, dan 4 mm), dilakukan evaluasi terhadap kualitas bentuk rajangan, ketebalan hasil rajangan, dan kapasitas kerja mesin. Hasil pengujian menunjukkan bahwa peningkatan jarak pisau menghasilkan rajangan yang lebih tipis dan fleksibel, serta mengurangi proporsi rajangan yang tidak standar. Ketebalan hasil rajangan berkisar antara 1,94 mm hingga 3,06 mm, dengan deviasi maksimum sebesar 0,51 mm. Selain itu, kapasitas mesin meningkat seiring bertambahnya jarak pisau, mencapai nilai tertinggi sebesar 26,47 kg/jam pada jarak 4 mm. Sistem yang dirancang terbukti mampu menghasilkan rajangan dengan ketebalan yang dapat dikontrol, sehingga mendukung kualitas dan konsistensi produk akhir.
Mitigasi Korosi Galvanik pada Aplikasi Sambungan Perpipaan: Rasio Area Permukaan dan Analisis Mikroskopis Kusdiyarto, Prihatno; Wibowo , Heri; Badranaya, Muhammad Imawan; Wisnugroho, Susilo
Jurnal INOVATOR Vol. 8 No. 1 (2025): Jurnal INOVATOR
Publisher : LPPM Politeknik Jambi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37338/inovator.v8i1.475

Abstract

Abstract-In this study, a report of the corrosion rate of the dissimilar material was influenced by the effect of high-temperature conditions. The implement of the single metal polarization on Tafel behavior and variations of the area of two dissimilar metals in the galvanic couple was explained. The technique was utilized to characterize corrosion, such as using the polarization resistance corrosion rate method and the Tafel method using a potentiostat. The material was used on a single carbon steel anode specimen and likewise used carbon steel and stainless steel 316 material couples in a galvanic corrosion and immersion environment. The surface area ratios were 1:2:10 used 3.5% NaCl solutions in a galvanic corrosion environment. The results of this analysis identified that the surface area involves the potentiodynamic polarization that can control the electrochemical of a surface. The anode in the galvanic couple is separated easily from its corrosion potential, and the magnitude of galvanic corrosion is highly influenced by the anodic to the cathodic area. The corrosion rate increased with the rising surface area either in galvanic and immersion conditions.Intisari-Dalam penelitian ini, laporan tentang laju korosi dari material yang berbeda dipengaruhi oleh efek kondisi suhu tinggi. Penerapan polaritas logam tunggal pada perilaku Tafel dan variasi area dua logam yang berbeda dalam pasangan galvanik dijelaskan. Teknik ini digunakan untuk mengkarakterisasi korosi, seperti menggunakan metode laju korosi resistansi polarasi dan metode Tafel menggunakan potensiostat. Material yang digunakan pada spesimen anoda baja karbon tunggal dan juga digunakan pasangan material baja karbon dan stainless steel 316 dalam lingkungan korosi galvanik dan perendaman. Rasio luas permukaan adalah 1:2:10 menggunakan larutan NaCl 3,5% dalam lingkungan korosi galvanik. Hasil analisis ini mengidentifikasi bahwa luas permukaan melibatkan polarasi potensi dinamis yang dapat mengendalikan elektro-kimia permukaan. Anoda dalam pasangan galvanik dapat dengan mudah dipisahkan dari potensi korosinya, dan besarnya korosi galvanik sangat dipengaruhi oleh area anodic dibandingkan dengan area katodik. Tingkat korosi meningkat seiring dengan bertambahnya luas permukaan baik dalam kondisi galvanik maupun rendaman.
Co-Authors Aan Ardian Aditya, Zaky Ahmad Ahmad Fikrie Ardani Ahsanul Fakhri Badranaya, Muhammad Imawan Basyirun Basyirun Riswan Dwi Djatmiko Sutopo Sutopo Ulya, Richa Railil Wibowo , Heri Wikantara, Astana Aji Wisnugroho, Susilo