Performance Analysis for Hybrid Vibration Isolation System for Marine Engines under Simulated Extreme Marine Conditions

Abstract

This study evaluates a hybrid vibration isolation system (silica-reinforced rubber dampers/electromagnetic actuators) for marine engines under simulated extreme conditions (85% humidity, 3.5% salinity). Results show 47% isolation efficiency (transmissibility ratio: 0.53) in mid-frequencies (100–500 Hz), surpassing conventional systems (25%). Over 80% efficiency (transmissibility <0.2) was achieved at 1200–1800 Hz. Titanium nitride (TiN) coatings reduced corrosion mass loss by 94% (0.15 ± 0.02 mg/cm² vs. 2.5 ± 0.3 mg/cm²) and corrosion rate to 1.8 ± 0.3 μm/year after 50 salt spray cycles. Active actuators consumed 18 W/hour at 10–100 Hz and responded to 10g shocks within 0.20 ± 0.02 seconds with minimal deformation (<0.01 mm). Recommendations include adopting nano-coatings, standardizing tests (ISO 10816 + ASTM B117), and industry collaboration.