EU

Funded by the European Union

WP 2 Load identification

A technique for optimization of selected prestress parameters in prestressed composites has been developed. This is the first step towards experimental identification of prestress in real specimens.

Development of methods for identification of reaction forces of virtual supports for virtual isolation of substructures. This includes an application to monitoring of pipeline systems via guided torsional waves: virtual isolation of pipeline portions (half pipes) enables their local monitoring. The core procedure here is the identification of boundary excitation that cancels out reflections from defects and discontinuities passing past the boundary.

Ongoing development of a railway weigh-in-motion system: Access to Adaptronica's bridge system in Nieporęt. First installations and tests on a Vistula railway bridge in Warsaw.

Ongoing development of techniques for the load identification subsystem for Adaptronica's weigh-in-motion system installed on a railway bridge. This included automation of signal processing and load identification routines, as well as increasing their robustness:
  • Development and verification of routines for axle load identification, as well as identification of a locomotive type, number of cars and their types.
  • Gathering and statistical analysis of passing train data.
  • Monitoring of signal quality, error recognition, etc.
Further development of nonparametric techniques for modelling of known structural modifications and damages using the equivalent pseudo loads. These equivalent pseudo loads are found by solving a Volterra-type linear integral equation, which is a typical inverse problem of load identification. This step is a prerequisite for a corresponding nonparametric monitoring and identification technique studied in WP1.