A5017715103- Shape Memory Alloy Transformations
- Structural Behavior of Reinforced Concrete
- Structural Load-Bearing Analysis
- Seismic Performance and Analysis
- Masonry and Concrete Structural Analysis
- Concrete Corrosion and Durability
- Structural Engineering and Vibration Analysis
- Titanium Alloys Microstructure and Properties
- Fire effects on concrete materials
- High Entropy Alloys Studies
- Structural Analysis and Optimization
- Corrosion Behavior and Inhibition
- Structural mechanics and materials
- Material Properties and Applications
University of Southern California
2022-2024
Southern California University for Professional Studies
2022-2023
Hunan University
2018-2023
Abstract Iron-based shape memory alloys (FeSMAs) are emerging as a promising material for use in post-tensioning concrete structures to provide self-centering capabilities during seismic event. Past experimental studies on FeSMA focused strengthening or repairing existing structural components under gravity loading. In addition the rehabilitation, also have potential columns subjected loads. However, basic properties, such strength, ductility, recovery strain, actuation stress (i.e....
Abstract The superelasticity of shape memory alloys (SMA) can be used to provide self-centering and energy dissipation characteristics structures including buildings, bridges, automobiles, aircrafts. functional fatigue behavior SMA is important because it affects the stiffness, strength, strain recovery material. This study investigated large diameter Ni-Ti bars under different levels plastic deformation ambient temperatures. Differential scanning calorimetry (DSC) was measure martensitic...
Abstract Superelastic alloy (SEA) bars are widely used in structures subjected to moderate and strong earthquakes. Compared with conventional nickel-titanium (NiTi) SEAs, Cu–Al–Mn (CAM) SEAs has received increasing attention recently due their cost-effectiveness easier machinability. The authors’ previous research showed that despite lower strength limitations the maximum length, CAM have comparable superelastic strain recovery, a wider temperature range, superior rate stability compared...
A steel tube–reinforced concrete (ST-RC) column is composed of the inner concrete-filled tube (CFST) component and peripheral reinforced (RC) component. In this study, confinement interaction mechanism axially loaded columns was evaluated experimentally analytically. Eleven specimens were tested, including five ST-RC, three CFST, RC columns. The test results found that between core CFST outer components integrates both advantages while remarkably altering section equilibrium compared with...
Abstract Ni-Ti-Co is a new shape memory alloy (SMA) that has higher strength and lower superelastic temperature range than traditional binary Ni-Ti SMA. In this paper, the properties of bars are important for seismic applications were studied compared with those bars. The behavior, strength, strain recovery, low-cycle fatigue characteristics, fracture strains SMA different heat treatment strategies testing temperatures from -40℃ to 50℃ investigated in mind. effect loading variation on...
Cu-Al-Mn (CAM) shape memory alloys (SMA) are cost effective, have a high low-cycle fatigue life and superelastic limit, wide temperature application range compared to other types of SMAs. These characteristics CAM SMAs resulted in an increased research interest their use civil engineering applications, particularly as reinforcement concrete structures, dampers steel structures. However, these applications could require machining the SMA bars for connecting with structural elements. This...
<title>Abstract</title> Cu-Al-Mn (CAM) shape memory alloys (SMA) are cost effective, have a high low-cycle fatigue life and superelastic limit, wide temperature application range compared to other types of SMAs. These characteristics CAM SMAs resulted in an increased research interest their use civil engineering applications, particularly as reinforcement concrete structures, dampers steel structures. However, these applications could require machining the SMA bars for connecting with...
Cu-Al-Mn (CAM) superelastic alloy bars (SEAs) have received increasing attention in bridge applications. To take full advantage of their strain recovery and energy dissipation capacity, CAM SEAs are usually only applied the plastic hinge regions columns as part longitudinal reinforcement coupled with steel rebar through mechanical splices. In this study, feasibility using headed coupling to connect large diameter was investigated. Five ends were prepared: one 30 mm four 20 samples. First,...
Cu-Al-Mn (CAM) superelastic alloys (SEAs) have been shown to improve the seismic performance of bridges and buildings by replacing plastic hinge steel reinforcement. Despite research on mechanical at material structural scales, there is limited data degradation in properties CAM SEAs under harsh environmental conditions; particularly, long-term corrosion that are relevant for civil engineering structures. This aims fill this knowledge gap studying resistance comparison with different types...