Fatigue crack detection and identification by the elastic wave propagation method
| Autor: | Piotr Pająk, Marek Barski, Adam Stawiarski |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Engineering
business.industry Mechanical Engineering Isotropy Aerospace Engineering Fatigue testing 02 engineering and technology Structural engineering 021001 nanoscience & nanotechnology Piezoelectricity Computer Science Applications 020303 mechanical engineering & transports 0203 mechanical engineering Control and Systems Engineering Signal Processing Structural health monitoring 0210 nano-technology Actuator business Elastic wave propagation Reliability (statistics) Civil and Structural Engineering Tensile testing |
| Zdroj: | Mechanical Systems and Signal Processing. 89:119-130 |
| ISSN: | 0888-3270 |
| DOI: | 10.1016/j.ymssp.2016.08.023 |
| Popis: | In this paper the elastic wave propagation phenomenon was used to detect the initiation of the fatigue damage in isotropic plate with a circular hole. The safety and reliability of structures mostly depend on the effectiveness of the monitoring methods. The Structural Health Monitoring (SHM) system based on the active pitch-catch measurement technique was proposed. The piezoelectric (PZT) elements was used as an actuators and sensors in the multipoint measuring system. The comparison of the intact and defected structures has been used by damage detection algorithm. One part of the SHM system has been responsible for detection of the fatigue crack initiation. The second part observed the evolution of the damage growth and assess the size of the defect. The numerical results of the wave propagation phenomenon has been used to present the effectiveness and accuracy of the proposed method. The preliminary experimental analysis has been carried out during the tension test of the aluminum plate with a circular hole to determine the efficiency of the measurement technique. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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