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Muhammad Fazrin
Universitas Borneo Tarakan
Automotive Engineering Control & Systems Engineering Engineering Materials Science & Nanotechnology Mechanical Engineering

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Design and performance evaluation of a crankshaft-driven piston wavemaker for laboratory-scale wave tanks Deny Murdianto; Muhammad Fazrin; Marhadi Budi Waluyo; Sudirman Sudirman; Hadi Santoso
Jurnal Polimesin Vol 24, No 4 (2026): August
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v24i4.9033

Abstract

Laboratory-scale wave tanks are widely used to investigate surface wave behavior using different types of wavemakers, including flap and piston configurations. Previous studies by the authors showed that a simple transmission mechanism for a piston wavemaker produced unstable piston motion, resulting in variations in wave height and wavelength. This study designed and experimentally evaluated a crankshaft transmission system to drive a piston-type wavemaker and obtain more controlled piston motion. The experimental evaluation included mechanical performance analysis in terms of generated force and torque and measurement of wave characteristics at different distances from the wave source. The crankshaft system generated a force of 12.11 N and a torque of 0.24 Nm. The generated waves had average heights of 0.033, 0.029, and 0.027 m at distances of 0.5, 0.7, and 0.9 m, respectively, while the average wavelengths were 0.346, 0.350, and 0.334 m. The decrease in wave height with distance indicates wave energy attenuation during propagation. Compared with the previous piston wavemaker using a simple transmission system, the crankshaft system increased average wave height by 63.02% and average wavelength by 104.34%. The results indicate that the crankshaft transmission provides a more consistent piston motion and wave generation for laboratory-scale wave tank applications.
Co-Authors Hadi Santoso Marhadi Budi Waluyo Murdianto, Deny Sudirman