Fatigue prognosis in composites: a bayesian framework

Chiachío, Manuel

doi:10.30827/digibug.27289

Cited by 1 publication

(1 citation statement)

References 116 publications

(137 reference statements)

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“…For each individual inspection, the fatigue test has been stopped at the minimum load level and an ultrasonic inspection has been performed using the transmission beamforming technique. The received ultrasonic signals (available in [ 48 ]) by the SHMUS have been de-noised using a bandpass filter centered at the frequency of excitation (i.e., 300 kHz). This allows a range of frequencies around the frequency of excitation to pass, while attenuating frequencies out of the scope.…”

Section: Case Studymentioning

confidence: 99%

Structural Health Monitoring Using Ultrasonic Guided-Waves and the Degree of Health Index

Cantero‐Chinchilla

Aranguren

Royo

et al. 2021

Sensors

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This paper proposes a new damage index named degree of health (DoH) to efficiently tackle structural damage monitoring in real-time. As a key contribution, the proposed index relies on a pattern matching methodology that measures the time-of-flight mismatch of sequential ultrasonic guided-wave measurements using fuzzy logic fundamentals. The ultrasonic signals are generated using the transmission beamforming technique with a phased-array of piezoelectric transducers. The acquisition is carried out by two phased-arrays to compare the influence of pulse-echo and pitch-catch modes in the damage assessment. The proposed monitoring approach is illustrated in a fatigue test of an aluminum sheet with an initial notch. As an additional novelty, the proposed pattern matching methodology uses the data stemming from the transmission beamforming technique for structural health monitoring. The results demonstrate the efficiency and robustness of the proposed framework in providing a qualitative and quantitative assessment for fatigue crack damage.

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Section: Case Studymentioning

confidence: 99%