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Balancing and Alignment Analysis of Vertical Wind Turbine Helix Type and Savonius Type Finali, Asmar; Wardhana, Prabuditya Bhisma Wisnu; Utomo, Rochmad Eko Prasetyaning; Yudha, I Gusti Ngurah Agung Satria Prasetya Dharma
TRANSMISI Vol 19, No 2 (2023): September 2023
Publisher : Universitas Merdeka Malang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26905/jtmt.v19i2.9654

Abstract

Electrical energy is one of the basic needs that is very important in life, in addition to the physiological development of living things, electricity is also an input for various efforts or activities in order to produce something for survival. Therefore, renewable energy that is more environmentally friendly and an inexhaustible source of energy is needed, namely wind energy. This power generator is called a wind turbine with a vertical shaft. This turbine converts wind energy into mechanical and electrical. In order to obtain a turbine design with high efficiency.  It is also necessary to balance and align each component frame attached to the turbine rotor to produce a perfect/ideal rotation, so as to minimize the occurrence of vibrations caused by the imbalance. the results of calculations with the analytical method on Darrius Helix type obtained value = 0.125 Newton, and = 0.175 Newton, and the value of the angle = 63.43490. Alignment testing is carried out to determine the value of the misalignment between one blade with another blade. The results of the balancing test with the blade ballast obtained additional value, the blade D was 70 grams and the results from the plate addition test were obtained according to the calculation of the analytical method but also less than the maximum requiring additional load on the blade body to get blade A = 12 grams, blade B = 0, blade C = 40 grams, and a spoon D = 90 grams. For the results and discussion of the balancing and alignment method on the savonius type using the static balancing and alignment method using a dial indicator, the values obtained are in the fields A and B, the addition of mass is 59,007 grams and 59.007 grams with angles A and B 11.88 ° , and the value The misalignment deviation in the A, B and center planes is A: 4mm, B: 0.04mm, middle: 0.52mm, while the shaft alignment value is 0 because the value of the alignment of the shafts is the same or parallel.
Analisa Kekuatan Konstruksi Pad Eye Towing Hook Kapal Tugboat 27 Meter Dengan Metode Elemen Hingga Mizan, Tenario Aruza; Fiveriati, Anggra; Wahid, M. Abdul; Yudha, I Gusti Ngurah Agung Satria Prasetya Dharma; Hamid, Abdul
Techno Bahari Vol 12 No 1 (2025): Maret
Publisher : Politeknik Negeri Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52234/tb.v12i1.342

Abstract

Towing hook merupakan alat yang digunakan untuk menghubungkan tali penarik (towing line) atau wire rope dari tugboat ke kapal atau objek yang akan ditarik. Beberapa beban tarik mengakibatkan terjadinya distribusi tegangan yang terjadi pada bagian buritan kapal dan daerah sekitar pad eye towing hook akibat gerakan menarik yang dilakukan kapal, yang dapat menimbulkan banyak masalah seperti deformasi, keretakan, kerusakan, patah dll. Analisa tersebut bertujuan untuk mengetahui nilai equivalent stress, deformation dan safety factor dari konstruksi foundation towing hook kapal tugboat, serta mengetahui letak titik kritis pada tiga variasi bracket towing hook yaitu variasi 1 bracket 100 x 100 x 12, variasi 2 bracket 100 x 100 x 16, dan variasi 3 bracket 100 x 165 x 8. Adapun hasil analisis dan perhitungan variasi 1 nilai equivalent stress sebesar 189,64 Mpa, sedangkan untuk variasi 2 nilai equivalent stress sebesar 183,56 Mpa, dan variasi 3 nilai equivalent stress sebesar 183,38 Mpa. Kriteria dari struktur Pad eye Towing Hook dari hasil simulasi yang didapat yaitu Pad eye Towing Hook dengan variasi ketiga lebih baik untuk digunakan atau dioperasikan dikarenakan nilai dari tegangan maksimum lebih kecil dan tingkat deformasi lebih rendah dibanding variasi 1 dan variasi 2.