| Title |
Experimental Study on Damage Estimation of High Tensile Bolted Friction Type Joint Using Scaled Model |
| DOI |
https://doi.org/10.5659/JAIK.2025.41.4.257 |
| Keywords |
Scaled Model; Prototype Model; Bolted Joint; Natural Frequency Ratio; Damage Estimation |
| Abstract |
Bolted joints are commonly used in various structures, making health monitoring essential for these critical components. An experimental study was conducted to develop a damage estimation technique for bolted joints in real structures, using data from damaged scaled models and the natural frequency ratio before and after damage. For this, baseline analysis models for both scaled and prototype models were updated based on natural frequencies in a healthy state, as obtained from experiments. The relationship between joint rigidity and the natural frequency ratio was then analytically derived from the updated models. Damage in the prototype model was estimated by applying the test results from the scaled model. The estimation results showed a reasonable agreement with the accurate results, suggesting that health monitoring of bolted joints can be effectively conducted using this method. |