에너지 기반 증기발생기 전열관 마모 모델 개발 = Development of Energy-based Wear Model for Steam Generator Tubes

다국어 초록 (Multilingual Abstract)

Fretting wear models for steam generator (SG) tubes, which traditionally rely on the Archard model or linear scaling with total energy dissipation, often lose accuracy under combined impact-sliding conditions. To address this limitation, we propose a component-separated energy wear model that independently quantifies the tangential and normal energy loss components. Based on experimental data from oblique impact and impact-sliding tests, the proposed model achieves superior predictive accuracy compared to conventional total energy approaches. The model identifies a larger tangential wear coefficient and a tangential exponent exceeding unity, confirming a shear- dominated, super-linear wear accumulation mechanism. Furthermore, this model successfully captures the angle- dependent transition from tangential- to normal-dominated wear regimes and remains computationally efficient, making it more practical for SG tube wear forecasting.