Search results for: coda waves

• Crack monitoring in concrete beams under bending using ultrasonic waves and coda wave interferometry: the effect of excitation frequency on coda

  Publication

  • M. Knak
  • E. Wojtczak
  • M. Rucka

  - Year 2024

  Concrete is one of the most widely used construction materials in the world. In recent years, various non-destructive testing (NDT) and structural health monitoring (SHM) techniques have been investigated to improve the safety and control of the current condition of concrete structures. This study focuses on micro-crack monitoring in concrete beams. The experimental analysis was carried out on concrete elements subjected to three-point...

  Full text to download in external service

• Gaz, Woda i Technika Sanitarna

  Journals

  ISSN: 0016-5352 , eISSN: 2449-9404

• Extreme waves and wave events in the Baltic Sea

  Publication

  • M. Paprota
  • J. Przewłócki
  • W. Sulisz
  • B. Swerpel

  - Year 2003

  W pracy przedstawiono wyniki pomiarów szeregów czasowych falowania uzyskanych z boi pomiarowych, umieszczonych w kilku miejscach linii brzegowej Morza Bałtyckiego. Rozważano wpływ czasu trwania sztormu i kierunku wiatru na powstawanie pojedynczych oraz grup fal ekstremalnych. Przeprowadzono statystyczną analizę takich fal, zwracając szczególną uwagę na rozkłady ich wysokości. Dla wybranych realizacji przeprowadzono analizę spektralną...

• JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS

  Journals

  ISSN: 0920-5071 , eISSN: 1569-3937

• Coda wave interferometry in monitoring the fracture process of concrete beams under bending test

  Publication

  • M. Knak
  • E. Wojtczak
  • M. Rucka

  - Bulletin of the Polish Academy of Sciences-Technical Sciences - Year 2023

  Early detection of damage is necessary for the safe and reliable use of civil engineering structures made of concrete. Recently, the identification of micro-cracks in concrete has become an area of growing interest, especially using wave-based techniques. In this paper, a non-destructive testing approach for the characterization of the fracture process was presented. Experimental tests were made on concrete beams subjected to mechanical...

  Full text available to download

• Orthodontic Waves

  Journals

  ISSN: 1344-0241 , eISSN: 1878-1837

• Water Waves

  Journals

  ISSN: 2523-367X , eISSN: 2523-3688

• SHOCK WAVES

  Journals

  ISSN: 0938-1287 , eISSN: 1432-2153

• CoDAS

  Journals

  ISSN: 2317-1782

• Waves Along Fractal Coastlines: From Fractal Arithmetic to Wave Equations

  Publication

  • M. Czachor

  - ACTA PHYSICA POLONICA B - Year 2019

  Beginning with addition and multiplication intrinsic to a Koch-type curve, we formulate and solve wave equation describing wave propagation along a fractal coastline. As opposed to examples known from the literature, we do not replace the fractal by the continuum in which it is embedded. This seems to be the first example of a truly intrinsic description of wave propagation along a fractal curve. The theory is relativistically...

  Full text available to download