A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Probabilistic Prognosis of Fatigue Crack Growth Using Acoustic Emission Data
This paper presents a structural health monitoring methodology that uses acoustic emission (AE) features to predict crack growth in structural elements subjected to fatigue. This allows for the prediction of the failure of the structural element at the current load level. The methodology uses Bayesian inference to account for different sources of uncertainty such as uncertainty in the data (AE signal), unknown fracture mechanics parameters, and model inadequacy. The methodology is divided into two main components: a model updating component that uses available data to build a joint probability distribution of the different unknown fracture mechanics parameters, and a prognosis component in which this multivariable probability distribution is sampled to predict the stress intensity factor range at a future number of cycles. The application of the methodology does not require knowledge of the load amplitude nor the initial crack length. The methodology is validated using experimental data from a compact test specimen under cyclic loading.
Probabilistic Prognosis of Fatigue Crack Growth Using Acoustic Emission Data
This paper presents a structural health monitoring methodology that uses acoustic emission (AE) features to predict crack growth in structural elements subjected to fatigue. This allows for the prediction of the failure of the structural element at the current load level. The methodology uses Bayesian inference to account for different sources of uncertainty such as uncertainty in the data (AE signal), unknown fracture mechanics parameters, and model inadequacy. The methodology is divided into two main components: a model updating component that uses available data to build a joint probability distribution of the different unknown fracture mechanics parameters, and a prognosis component in which this multivariable probability distribution is sampled to predict the stress intensity factor range at a future number of cycles. The application of the methodology does not require knowledge of the load amplitude nor the initial crack length. The methodology is validated using experimental data from a compact test specimen under cyclic loading.
Probabilistic Prognosis of Fatigue Crack Growth Using Acoustic Emission Data
Zárate, Boris A. (author) / Caicedo, Juan M. (author) / Yu, Jianguo (author) / Ziehl, Paul (author)
Journal of Engineering Mechanics ; 138 ; 1101-1111
2012-02-13
112012-01-01 pages
Article (Journal)
Electronic Resource
English
Probabilistic Prognosis of Fatigue Crack Growth Using Acoustic Emission Data
| Online Contents | 2012
Deterministic and probabilistic fatigue prognosis of cracked specimens using acoustic emissions
| Online Contents | 2012
| British Library Conference Proceedings | 2011
Prediction of fatigue crack growth in steel bridge components using acoustic emission
| Online Contents | 2011