WaveletInception Networks for Drive-by Vibration-Based Infrastructure Health Monitoring

• URL: http://arxiv.org/abs/2507.12969v1
• Date: Thu, 17 Jul 2025 10:14:20 GMT
• Title: WaveletInception Networks for Drive-by Vibration-Based Infrastructure Health Monitoring
• Authors: Reza Riahi Samani, Alfredo Nunez, Bart De Schutter,
• Abstract summary: This paper presents a novel deep learning-based framework for infrastructure health monitoring using drive-by vibration response signals.<n>Recognizing the importance of spectral and temporal information, we introduce the WaveletInception-BiLSTM network.<n>A case study focusing on railway track stiffness estimation shows that the model significantly outperforms state-of-the-art methods in estimating railway ballast and railpad stiffness parameters.
• Score: 12.238448638194203
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: This paper presents a novel deep learning-based framework for infrastructure health monitoring using drive-by vibration response signals. Recognizing the importance of spectral and temporal information, we introduce the WaveletInception-BiLSTM network. The WaveletInception feature extractor utilizes a Learnable Wavelet Packet Transform (LWPT) as the stem for extracting vibration signal features, incorporating spectral information in the early network layers. This is followed by 1D Inception networks that extract multi-scale, high-level features at deeper layers. The extracted vibration signal features are then integrated with operational conditions via a Long Short-term Memory (LSTM) layer. The resulting feature extraction network effectively analyzes drive-by vibration signals across various measurement speeds without preprocessing and uses LSTM to capture interrelated temporal dependencies among different modes of information and to create feature vectors for health condition estimation. The estimator head is designed with a sequential modeling architecture using bidirectional LSTM (BiLSTM) networks, capturing bi-directional temporal relationships from drive-by measurements. This architecture allows for a high-resolution, beam-level assessment of infrastructure health conditions. A case study focusing on railway track stiffness estimation with simulated drive-by vibration signals shows that the model significantly outperforms state-of-the-art methods in estimating railway ballast and railpad stiffness parameters. Results underscore the potential of this approach for accurate, localized, and fully automated drive-by infrastructure health monitoring.

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