Grout-WATCH

The "Grout-WATCH" project aimed to evaluate the degradation process of grouted joints used in offshore applications. As part of this overall initiative, Wölfel's sub-project "Lifetime-Monitor-Grout" focused on signal analysis for a future monitoring system. Methods and algorithms were developed to assess the degradation state of grouted joints and predict their remaining service life. The analysis is based on data from new or conventional sensors, interpreted using advanced analytics. By combining sensors with automated signal analysis, the safety and reliability of offshore structures can be improved. Wölfel worked closely with project partners to develop the signal analysis for grouted joints, using data from small, medium, and large-scale experiments, as well as from a wind farm. The results are intended to influence standards and regulations for offshore structures, enabling widespread application and standardization.

Wölfel's sub-project in "Grout-WATCH" focused on signal analysis for a future monitoring system for grouted joints in offshore applications. Both new and conventional sensors are employed, with the collected data interpreted using advanced analysis techniques to assess the degradation state and predict the remaining service life of grouted joints.

Continuous monitoring of the grouted joints gathers data on the mechanical behavior and dynamic structural response of the structures. These measurements allow the reconstruction of loads and fatigue stresses. Changes in the data can indicate damage or other influences, making it possible to differentiate damage events from other variations to ensure safe, automated degradation assessments.

The developed methods and algorithms can be applied to both new grouted joints and existing installations with conventional sensors. Improved information gathering and degradation predictions allow for condition-based and predictive maintenance planning, contributing to increased safety, precise situational awareness, and improved operational efficiency of offshore structures.

Wölfel collaborated closely with the project partners to integrate sensor technology, signal analysis, and other algorithms. Together with WindMW, the developed signal analysis tool was tested and validated in practical applications. The insights and research results are expected to be incorporated into standards and regulations for offshore structures, promoting widespread use and standardization.