Research

Rehabilitation of Timber Piles Using Fiber Reinforced Polymer

Related publications:

1. L Ai (✉); R Krol; A Henderson; V Soltangharaei; B Ross; T Cousins; P Ziehl. Enhancing the Rehabilitation of Timber Piles Using Fiber Reinforced Polymer: An Acoustic Emission Analysis Under Compressive Stress. Engineering Structures. 2024. 319: 118915. DOI

Cost-effective Strengthening Methods of Bridge Slab/Girder

Relate publications:

1. E Elbatanouny; A Henderson; Laxman K C; L Ai; P Ziehl. Full-Scale Experimental Investigation of Prestressed Concrete Channel Bridge Girders Strengthened with Aluminum Channels. Target Journal: TBD, in preparation.
2. Laxman K C; A Henderson; E Elbatanouny; L Ai (✉); B Ross; T Cousins; P Ziehl. Cost-effective Methods for Flexural Strengthening of One-way RC Precast Flat Slab Bridges in South Carolina. Construction and Building Materials. 2023. Vol.408: 133675. DOI
3. Laxman K C; A Ross; L Ai (✉); A Henderson; E Elbatanouny; M Bayat; P Ziehl. Determination of Vehicle Loads on Bridges by Acoustic Emission and an Improved Ensembled Artificial Neural Network, Construction and Building Materials. 2023. Vol.364:129844. DOI

In-flight Health Monitoring and Assessment System for Aircraft Components

Related publications:

1. L Ai; Laxman K C; E Elbatanouny; M Bayat; M Bayat; M van Tooren; P Ziehl. *Monitoring and Automatic Characterization of Low-velocity Impacts on Composite Components Through Acoustic Emission, Expert Systems with Applications. under review
2. L Ai; V Soltangharaei; M Bayat; M van Tooren; P Ziehl. Detection of Impact on Aircraft Composite Structure Using Machine Learning Techniques, Measurement Science and Technology. 2021. Vol.32:084013. DOI
3. L Ai; V Soltangharaei; M van Tooren; P Ziehl. A Smart Impact Detection System for Aircraft Control Surface Based on Acoustic Emission Monitoring, International Journal of COMADEM. 2021. Vol.24:27-34. Link
4. L Ai; B Henderson; S Houck; S Dickson; P Ziehl. Identifying the Energy of Low-velocity Impacts on Composite Components Using Acoustic Emission, 2023 IEEE Aerospace Conference. 2023 Mar 4. DOI
5. L Ai; E Elbatanouny; Laxman K C; M Bayat; V Soltangharaei; M van Tooren; P Ziehl. Detection and Evaluation of Impact Damage on Aircraft Control Surface Using Acoustic Emission and Convolution Neural Network, The 13th International Workshop on Structural Health Monitoring (IWSHM 2021). DOI
6. L Ai; Laxman, K C; E Elbatanouny; V Soltangharaei; M van Tooren; P Ziehl. Assessment of Impact Damage Level for Composite Aircraft Components Using Acoustic Emission, 2021 Sept 21; CAMX 2021. TP21-0000000329. Link
7. L Ai; V Soltangharaei; Wout de Backer; P Ziehl; M van Tooren. A Minimally Intrusive Impact Detection System for Aircraft Moveable using Random Forest, 2020 Sept 21; CAMX 2020.TP20-0000000091. Link
8. L Ai; V Soltangharaei; R Anay; M van Tooren; P Ziehl, Data-Driven Source Localization of Impact on Aircraft Control Surfaces, 2020 IEEE Aerospace Conference 2020 Mar 7 (pp. 1-10). IEEE. DOI

Automated Load Rating using Digital Twins

Relate publications:

1. L Ai (✉); Laxman K C; E Elbatanouny; A Henderson; P Ziehl. Assisting Load Rating Testing of Precast Reinforced Concrete Bridge Slab through Digital Twins and Field Monitoring Data. Journal of Testing and Evaluation. 2024. accepted, in press
2. Laxman K C; N Tabassum; L Ai (✉); C Cole; P Ziehl. Automated Crack Detection and Crack Depth Prediction for Reinforced Concrete Structures using Deep Learning, Construction and Building Materials. 2023. Vol.370:130709. DOI
3. Laxman K C; A Ross; L Ai (✉); A Henderson; E Elbatanouny; M Bayat; P Ziehl. Determination of Vehicle Loads on Bridges by Acoustic Emission and an Improved Ensembled Artificial Neural Network, Construction and Building Materials. 2023. Vol.364:129844. DOI
4. L Ai; M Bayat; G Comert; P Ziehl. An Autonomous Bridge Load Rating Framework Using Digital Twins, The 13th International Workshop on Structural Health Monitoring (IWSHM 2021). DOI

Acoustic Emission Source Localization using Transfer Learning, Numerical Simulation and Unsupervised Domain Adaptation

Related publications:

1. L Ai; B Zhang; P Ziehl. A Transfer Learning Approach for Acoustic Emission Localization on Steel Plate-like Structure Using Numerical Simulation and Unsupervised Domain Adaptation, Mechanical Systems and Signal Processing. 2023. Vol.192:110216. DOI

Damage Localization for Large-scale Structures using Minimum Number of Sensors

Relate publications:

1. L Ai; M Bayat; P Ziehl. Localizing Damage on Stainless Steel Structures Using Acoustic Emission Signals and Weighted Ensemble Regression-based Convolutional Neural Network, Measurement. 2023. Vol.211:112695. DOI
2. L Ai; V Soltangharaei; M Bayat; B Greer; P Ziehl. Source Localization on Large-Scale Canisters for Used Nuclear Fuel Storage Using Optimal Number of Acoustic Emission Sensors, Nuclear Engineering and Design. 2021. Vol.375:111097. DOI

Online Monitoring System for Concrete Structures Affected by Alkali-Silica Reaction

Related publications:

1. L Ai; V Soltangharaei; P Ziehl. Developing a Heterogeneous Ensemble Learning Framework to Evaluate Alkali-silica Reaction Damage in Concrete using Acoustic Emission Signals, Mechanical Systems and Signal Processing. 2022. Vol.172:108981. DOI
2. V Soltangharaei; L Ai; R Anay; M Bayat; P Ziehl. Implementation of Information Entropy, b-value, and Regression Analyses for Temporal Evaluation of AE Data Recorded During ASR Cracking, Practice Periodical on Structural Design and Construction-ASCE. 2021. Vol.26:04020065. DOI
3. V Soltangharaei; R Anay; L Ai; ER. Giannini; J Zhu; P Ziehl. Temporal Evaluation of ASR Cracking in Concrete Specimens Using Acoustic Emission, Journal of Materials in Civil Engineering-ASCE. 2020. Vol.32:04020285. DOI
4. V Soltangharaei; R Anay; L Ai; Y Le Pape; Z John Ma; P Ziehl, Monitoring Alkali Silica Reaction of Large and Medium Scale Concrete Specimens Using Acoustic Emission, SMIRT 25. 2019 Link

Detection and Monitoring of Stress-corrosion-cracking on Dry Cast Storage System Canisters

Related publications:

1. L Ai; V Soltangharaei; B Greer; M Bayat; P Ziehl. Structural Health Monitoring of Stainless-Steel Nuclear Fuel Storage Canister Using Acoustic Emission. Developments in the Built Environment. 2024. Vol.17: 100294. DOI
2. V Soltangharaei; JW Hill; L Ai; R Anay; B Greer; M Bayat; P Ziehl. Acoustic Emission Technique to Identify Stress Corrosion Cracking Damage, Structural Engineering and Mechanics. 2020. Vol.75:723-736. DOI
3. L Ai; B Greer; J Hill; V Soltangharaei; R Anay; P Ziehl, Finite Element Modeling of Acoustic Emission in Dry Cask Storage Systems Generated by Cosine Bell Sources, May 2019, AIP Conference Proceedings 2102(1):13000. DOI