Тип публикации: доклад, тезисы доклада, статья из сборника материалов конференций
Конференция: Optical and Computational Technologies for Measurements and Industrial Applications (OptiComp 2025); Bukhara; Bukhara
Год издания: 2025
Идентификатор DOI: 10.1117/12.3078194
Ключевые слова: natural vibrations, steel pipe, internal fluid, pressure, vibration monitoring, leak detection, mathematical modeling
Аннотация: The paper presents an experimental and numerical investigation of the natural vibrations of a horizontal steel-pipe section 8 m long with an internal diameter of 180 mm and a wall thickness of 10 mm, while pressurised water is circulating through it. Vibrations were recorded with a piezoelectric accelerometer mounted on the pipe suПоказать полностьюrface, and the signals were subjected to spectral analysis in the LGraph software suite. In the frequency range up to 53 kHz a steady resonant peak attributable to one of the pipe's bending modes was detected. To interpret the results, a mathematical model based on Euler-Bernoulli beam theory was developed. The model predicts the frequency of the first higher-order bending mode to be 2.95 kHz, which differs from the experimental value by less than 3 %. The practical applicability of the results for vibration monitoring is demonstrated: shifts in natural frequencies can serve as sensitive indicators of leaks or structural defects, especially when combined with remote radar methods. The findings provide a foundation for the development of an integrated pipeline-condition-monitoring system that couples mathematical forecasting with highly sensitive field measurements.
Журнал: Optical and Computational Technologies for Measurements and Industrial Applications (OptiComp 2025)
Номера страниц: 138031
Место издания: Bukhara