Wenxin Cai
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Wenxin Cai has a total of 3 co-authors. Here are the top co-authors by number of shared publications:
- Fan Yi
State Key Laboratory of Safety, Durability and Healthy Operation of Long Span Bridges, JSTI Group, Nanjing 210019, China
1 shared publication - Xianqiang Wang
State Key Laboratory of Safety, Durability and Healthy Operation of Long Span Bridges, JSTI Group, Nanjing 210019, China
1 shared publication - Xiaonan Feng
State Key Laboratory of Safety, Durability and Healthy Operation of Long Span Bridges, JSTI Group, Nanjing 210019, China
1 shared publication
Latest Publications
- Open Access
An Acoustic Emission Parameter Analysis of Damage in Reinforced Concrete Beams Under the Coupling Effect of Freeze–Thaw and Corrosion
To investigate the evolution of acoustic emission (AE) parameters during the flexural failure of reinforced concrete (RC) beams subjected to freeze–thaw and corrosion, four RC beams were fabricated and assigned to four conditioning regimes: no deterioration, freeze–thaw only (75 cycles), corrosion only (4.8% mass loss), and combined. Three-point bending tests were conducted, combining AE and digital image correlation (DIC) techniques. The damage process was divided into four stages: micro-crack initiation, stable crack propagation, unstable crack propagation, and failure. The evolution of AE parameters including ring count, energy, amplitude, peak count, and duration was analyzed. Each parameter is positively correlated with load level and rises as the damage stage advances. The slope of cumulative parameters reflects crack development more reliably than instantaneous values. The effect of corrosion on these parameters is significantly greater than that of freeze–thaw. For corroded beams, AE parameter levels are higher during the micro-crack initiation stage but lower during the stable crack propagation stage. The overall AE activity decreases with increasing deterioration degree. High-amplitude events increase with damage progression, but fewer high-amplitude events are observed at the failure stage of severely deteriorated beams. This study reveals the correspondence between AE parameters and damage stages, providing an experimental basis for damage assessment using AE techniques.
Open AccessAn Acoustic Emission Parameter Analysis of Damage in Reinforced Concrete Beams Under the Coupling Effect of Freeze–Thaw and Corrosion
To investigate the evolution of acoustic emission (AE) parameters during the flexural failure of reinforced concrete (RC) beams subjected to freeze–thaw and corrosion, four RC beams were fabricated and assigned to four conditioning regimes: no deterioration, freeze–thaw only (75 cycles), corrosion only (4.8% mass loss), and combined. Three-point bending tests were conducted, combining AE and digital image correlation (DIC) techniques. The damage process was divided into four stages: micro-crack initiation, stable crack propagation, unstable crack propagation, and failure. The evolution of AE parameters including ring count, energy, amplitude, peak count, and duration was analyzed. Each parameter is positively correlated with load level and rises as the damage stage advances. The slope of cumulative parameters reflects crack development more reliably than instantaneous values. The effect of corrosion on these parameters is significantly greater than that of freeze–thaw. For corroded beams, AE parameter levels are higher during the micro-crack initiation stage but lower during the stable crack propagation stage. The overall AE activity decreases with increasing deterioration degree. High-amplitude events increase with damage progression, but fewer high-amplitude events are observed at the failure stage of severely deteriorated beams. This study reveals the correspondence between AE parameters and damage stages, providing an experimental basis for damage assessment using AE techniques.