This third and final phase involves the execution of new tests on the C3dx span, with the imposition of progressive damages.

Activities

• Preparation of the C3dx span for laboratory tests with progressive damage imposition
• C3dx span characterization tests:
  • steel side stress release tests
  • reflectometer measurements
  • tomographic measurements
  • potential mapping
  • noise emission measurements
• Testing with progressive damage imposition on the span C3dx
• Dismantling and scarification for the evaluation of the real state of sickening of the beams of the C3dx span

Targets

• Metrological verification of the effectiveness of vibrational tests to identify the different structural damage states of a whole span
• Collection of additional information for validation of stress release tests on the steel side
• Metrological evaluation of the effectiveness of reflectometer tests by carrying out investigations on 2 of the 4 beams, in 3 of the 5 levels of imposed damage, and through the subsequent controlled demolition
• Metrological evaluation of the effectiveness of tomographic measurements by performing investigations on 2 of the 4 beams, in 2 of the 5 levels of imposed damage, and through the subsequent controlled demolition.
• Metrological evaluation of the effectiveness of the potential mapping through the execution of investigations on 2 of the 4 beams, in 2 of the 5 levels of damage imposed, and through the subsequent controlled demolition.
• Validation of diagnostic methodologies based on acoustic emissions through the correlation between the test results and the imposed damage state induced on the structural element.