# Enhancing Ship Generator Reliability by Modifying Bearings to Prevent Electrical Arcing Damage
> Rukmini

URL kanonis: https://discover.unhas.ac.id/publications/pub_scopus_105037968909
Jurnal / Konferensi: Engineering Technology and Applied Science Research
Tahun terbit: 2026
DOI: https://doi.org/10.48084/etasr.12085
ISSN: 22414487
Kuartil SJR: Q2
Citations: 0

## Authors
- Rukmini

## Abstract
Stray electrical currents in marine generators cause catastrophic bearing fluting, leading to frequent failures and operational downtime. The harsh maritime environment exacerbates this issue, demanding a more robust solution than conventional methods. This study introduces an innovative porcelain insulation sleeve applied to the bearing housing of a 250 kVA ship generator. Its effectiveness was evaluated through comparative in-situ testing, measuring vibration, temperature, and electrical parameters under a 22 kW load, with insulation thicknesses varying from 2.0 mm to 2.75 mm. The porcelain armor performed exceptionally. A 2.20 mm thickness was identified as optimal, achieving a 94% reduction in vibration and a 3.7 °C drop in operating temperature. Critically, the insulation's ultra-high insulation resistance (1000 GΩ) completely blocked the path of parasitic currents, eliminating the root cause of electrical arcing and fluting damage. This work demonstrates that applying porcelain insulation provides a definitive, maintenance-free solution to bearing fluting. The research validates a highly effective and practical engineering intervention that significantly enhances the reliability, safety, and service life of marine generators.

## Keywords
- Service life
- Reliability (semiconductor)
- Automotive engineering
- Bearing (navigation)
- Electric arc
- Vibration
- Armour
- Generator (circuit theory)
- Structural engineering
- Engineering
- Root cause
- Drop (telecommunication)
- Electric generator
- Materials science
- Mechanical engineering
- Soldering
- Work (physics)
- Catastrophic failure
- Forensic engineering
- Marine engineering
- Failure mode and effects analysis
- Plain bearing

---
Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
Saat mengutip, gunakan DOI bila tersedia atau URL kanonis di atas.