A5101444434- Mechanical Behavior of Composites
- Textile materials and evaluations
- Ultrasonics and Acoustic Wave Propagation
- Structural Analysis of Composite Materials
- Composite Structure Analysis and Optimization
- Structural Behavior of Reinforced Concrete
- Optical measurement and interference techniques
- Non-Destructive Testing Techniques
- Injection Molding Process and Properties
- Epoxy Resin Curing Processes
- Tunneling and Rock Mechanics
- Geophysical Methods and Applications
- Vibration and Dynamic Analysis
- Evolution and Genetic Dynamics
- Magnetic Properties of Alloys
- Industrial Vision Systems and Defect Detection
- Iterative Learning Control Systems
- Mathematical and Theoretical Epidemiology and Ecology Models
- Surface Treatment and Residual Stress
- 3D IC and TSV technologies
- Rock Mechanics and Modeling
- Fiber-reinforced polymer composites
- Thermography and Photoacoustic Techniques
- Smart Materials for Construction
- Geotechnical Engineering and Underground Structures
Zhejiang University
2021-2025
Zhejiang University of Technology
2023
University of Science and Technology Liaoning
2020
Collaborative Innovation Center of Advanced Microstructures
1997
Nanjing University
1997
Abstract Curing residual stress (CRS) is common in polymer‐matrix composites due to the anisotropic properties of materials. Finite element method (FEM), most extensively used approach for curing behavior prediction, usually complicated and time‐consuming. To achieve a fast prediction process‐induced stresses, convolutional neural network (CNN) established based on FEM. Firstly, fully coupled methodology built validated through distortions experimentally manufactured laminates. Then, it...
Abstract In the service of composite materials, scenarios involving repeated impacts are frequently encountered. our study, time‐frequency characteristics acoustic emission signals during impact processes were investigated using wavelet packet transform. Principal Component Analysis was utilized to identify frequency bands containing most information. Shannon entropy employed select optimal basis function. The terms DDD3, ADD3, and DAA3 correspond matrix cracking, delamination, fiber...
Cutting of fibers at the intersections could effectively mitigate problems associated with fiber accumulation in thick ribs composite grids. However, effectiveness varies according to different rib cutting angles structure. Therefore, five samples 30°, 45°, 60°, 75°, and 90° were prepared this study. Concurrently, numerical model for tensile compressive behavior was established considering zero-thickness interface elements. The results indicated that as angle decreased, strength gradually...
In order to provide guidance for Muzhailin tunnel design and construction, in this study, five groups of slate specimens with different bedding angles (β, angle between plane vertical axis) were taken from site conduct Brazilian splitting tests. The tensile strength, applied energy, failure behaviour, acoustic emission (AE) characteristics analyzed, the mechanism was elucidated. results show that average strength specimen β equal 90° is ∼1.38 times 0°. Additionally, energy exhibits nonlinear...
In automated fiber placement (AFP), the contact pressure between roller and mold is an important process parameter. Too small or too large will result in unacceptable laying defects. This paper focuses on control method of AFP. Firstly, dynamic model pressing foot mechanism established, a mathematical relationship input air output force developed. Then, self-tuning PI algorithm used to implement servo based Slowly Time-Varying Recursive Identification Algorithm. Also, using Abaqus/CAE,...
Abstract The axial buckling load of single carbon fiber or composite strands is typically predicted using Euler's formula, developed for isotropic materials. This study introduces anisotropy in a mechanical carbon/epoxy Z‐pin model under pressure. It examines the influence compressive modulus, shear off‐axis angle, and aspect ratio on its behavior. Results show that instability performance decreases with lower compression, while keeping tensile modulus fixed. Anisotropy by up to 14% compared...
Quasi-static indentation (QSI) experiments are conducted to investigate the localization, identification and evolution of induced damage in laminate composite up delamination initiation using acoustic emission (AE) techniques. In this study, we propose a continuous wavelet transform (CWT)-based localization method for composites, which can simultaneously identify two modes, namely matrix cracking delamination. The experimental findings demonstrate that proposed algorithm, utilizes arrival...
Abstract To improve the impact resistance of composite materials, this study introduces an efficient global optimization framework based on a multi‐fidelity surrogate model to optimize layup sequence laminates. Numerical simulation models are constructed utilizing Hashin and Puck failure criteria provide few time‐consuming high‐fidelity samples multitude inexpensive low‐fidelity samples. The traditional genetic algorithm has been improved in terms encoding mechanisms, operators,...
Hygrothermal effect on the in-plane behavior of fine Z-pinned laminates were studied and failure mechanisms explained. Artificial seawater aging experiments carried out prepared by ultrasonic vibration equipment. A compression progressive damage numerical model based moisture-induced interface degradation was proposed to analyze initialization development composites. The mechanical results show that unpinned Φ0.11 mm have similar strength retention after 6 months aging, tensile compressive...
Abstract In evolutionary games, many mechanisms have been proposed to promote cooperation between individuals and the heterogeneity of these has widely investigated. However, joint effects multiple not adequately studied. Here, we introduce different neighborhoods global tags denote reputation conformity types, respectively, discuss on promoting in prisoner's dilemma game. Simulation results show that can effectively two promotes only certain circumstances.