Article
Construction & Building Technology
Ye Yuan, Qilin Zhang, Xiaoqun Luo, Ruijie Gu
Summary: This study investigated the mechanical properties of STFE, a new type of reinforced polymer building membrane material. Various mechanical tests were conducted to obtain the material's basic mechanical parameters, and linear and nonlinear stress-strain mechanical models were proposed. The research results lay the preliminary foundation for the application of this material in large-span tensile transparent membrane structures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Engineering, Marine
Zhengyi Kong, Ya Jin, Golder Md Sabbir Hossen, Shaozheng Hong, Yan Wang, Quang-Viet Vu, Viet-Hung Truong, Qinglin Tao, Seung-Eock Kim
Summary: Corrosion seriously affects the strength and stability of steel structures. This study investigates the influence of corrosion on the mechanical properties of mild steel through accelerated corrosion testing. The results show that different steel grades have different corrosion products and microstructures. By developing more accurate models, the mechanical properties of corroded steel can be predicted.
Article
Polymer Science
Qing Ji, Zhijun Wang, Jianya Yi, Xuezhi Tang
Summary: The study investigated the mechanical properties of PLA and PLA-Cu materials under both static and dynamic loading conditions, finding that yield stress and elastic modulus increased with strain rate. Under dynamic loading, material strength was significantly higher than under quasi-static loading. The distribution of copper powder and stress concentration in PLA-Cu material significantly impacted its toughness.
Article
Materials Science, Multidisciplinary
Wenzheng Xu, Fengwei Guo, Xin Liang, Tianlun Yan, Yang Xu, Jie Deng, Yuexin Li, Jingyu Wang
Summary: This study investigated the dynamic mechanical behavior of PBXs under different deceleration excitations by developing a physical model to describe their viscoelastic-plastic deformation, simulating results were validated through experiments. Through comparison and analysis, the dynamic response law of the charge in the penetration process was obtained based on experimental data.
MATERIALS & DESIGN
(2021)
Review
Polymer Science
Guoqiang Luo, Yuxuan Zhu, Ruizhi Zhang, Peng Cao, Qiwen Liu, Jian Zhang, Yi Sun, Huan Yuan, Wei Guo, Qiang Shen, Lianmeng Zhang
Summary: This paper provides a comprehensive overview of the research progress on mechanical properties characterization and modeling of cellular media materials. It emphasizes the importance of constitutive relationships and microstructure models in studying mechanical properties and optimizing structural design. Future research directions and key issues in this area are also discussed.
Article
Materials Science, Multidisciplinary
Chuan Ting Wang, Yong He, Zhiping Guo, Xiaohui Huang, Ying Chen, Houan Zhang, Yuan He
Summary: The effect of strain rate on the compressive properties of an AlCoCrFeNi high-entropy alloy was investigated. The alloy exhibited high strain rate sensitivity, especially under dynamic compression. Constitutive equations were derived to predict the strength of the alloy under various strain rates.
METALS AND MATERIALS INTERNATIONAL
(2021)
Article
Engineering, Mechanical
Bingqian Yan, Hongpu Kang, Xiangshang Li, Qingjie Qi, Bo Zhang, Jianzhong Liu
Summary: The paper focuses on the damage evolution law and mechanical property weakening mechanism of jointed rock mass under hydro-mechanical coupling. The mineral composition of rock specimens was analyzed and the distribution law of nuclear magnetic resonance T2 spectrum of granite under different axial stress was studied. Furthermore, the mechanical properties of jointed rock samples under triaxial stress and seepage pressure were investigated.
THEORETICAL AND APPLIED FRACTURE MECHANICS
(2023)
Review
Mechanics
Ziyu Zhao, Bing Li, Pibo Ma
Summary: This paper reviews recent research advances on the mechanical properties of various flexible composites and their application in aerospace and building materials. By blending the appropriate flexible polymer with additives, the desirable properties of flexible composites can be obtained. The discussion presented in this paper is of great significance for summarizing research trends and promoting structural optimization design.
COMPOSITE STRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Lin Liu, Bo Wen, Tiago Miranda
Summary: Permeability is a crucial factor for ensuring the safety of underground facilities, and it is important to analyze the permeability of rock materials. This study conducted triaxial mechanical property tests on granite gneiss samples taken from underground oil storage under different hydro-mechanical properties. The results show that the seepage pressure significantly affects the strength and deformation parameters of granite gneiss. The study also establishes a hydro-mechanical coupling constitutive model for granite gneiss based on the relationship between strain and permeability, and the verification shows good agreement between numerical and experimental results, indicating the effectiveness of the constitutive model in representing rock hydro-mechanical properties.
APPLIED SCIENCES-BASEL
(2023)
Review
Chemistry, Physical
Jianru Wang, Peng Cao, Xiaoxu Wang
Summary: Investigating the constitutive relationship and damage failure mechanism of solid propellants is important for improving the safety and efficiency of solid rocket motors. This paper focuses on the mechanical response behavior of composite solid propellants under loads and presents experimental research on their mechanical properties. The research summarizes the progress of constitutive models at different scales and provides important references for the structural optimization and performance improvement of solid propellants.
Article
Polymer Science
Barbara Adrover-Monserrat, Silvia Garcia-Vilana, David Sanchez-Molina, Jordi Lluma, Ramon Jerez-Mesa, J. Antonio Travieso-Rodriguez
Summary: This study aims to characterize the viscoelastic behavior of PEBA and provide reference values for constitutive model parameters for mechanical behavior simulation. The results show that a Quasi-Linear Visco-Elastic (QLVE) model accurately predicts the relaxation test results and fits well with the measurements of fast cyclic loading tests.
Article
Chemistry, Physical
Zongxing Zhang, Yuxuan Xu, Guangchong Qin, Shanhua Xu, Rou Li
Summary: This study investigates the degradation of mechanical properties in corroded steel by subjecting standard specimens to tensile tests. The influence of different degrees and types of corrosion on fracture paths, stress-strain curves, and mechanical properties are discussed. A damage constitutive model for corroded steel is established based on damage mechanics theory. The results show that the failure modes of corroded specimens are dependent on the degrees and types of corrosion. Corrosion damage leads to a decrease in ductility and the damage model can accurately reflect the damage development process.
Article
Environmental Sciences
Yufei Li, Nan Yao, Yicheng Ye, Menglong Wu, Guan Chen, Bohai Tan, Wenchao Guan
Summary: In order to analyze the early mechanical properties and damage characteristics of phosphogypsum-based cemented backfill (PCB) under hydrochemical action, tests were carried out with HCl solution, NaOH solution, and water respectively. The damage constitutive model of PCB considering chemical damage and load damage was constructed and verified with the experimental results. The study provides theoretical support and practical guidance for the strength design, long-term erosion deformation, and prediction of PCB in hydrochemical environment.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Construction & Building Technology
Guojun Sun, Longjun Li, Suduo Xue, Yuan Yang, Mingze Wu
Summary: The mechanical properties of polyester-coated fabric membrane material were studied at different temperatures, showing a decrease in elastic modulus and ultimate tensile strength with increasing temperature, while the breaking elongation initially increased and then decreased. The results provide empirical equations for membrane structure design and fire-resistant analysis, and propose change laws for the mechanical properties of polyester-coated fabric membrane material with temperatures.
JOURNAL OF MATERIALS IN CIVIL ENGINEERING
(2021)
Article
Multidisciplinary Sciences
Yugen Li, Huimei Zhang, Min Chen, Xiangzhen Meng, Yanjun Shen, Hui Liu, Yani Lu
Summary: This study theoretically assessed the effect of initial stress and structure on the mass damage of rock mass under load. A multi-factor coupling damage constitutive model and a jointed rock mass strength criterion were established to accurately predict damage characteristics and strength. The results showed that the joint angle, minimum principal stress, volume stress, shear stress, and joint dip angle influenced the strength of the rock mass. Compared to other methods, this approach better reflected the strength and influencing factors of jointed rock mass.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Biomedical
Ruofeng Wei, Bin Li, Hangjie Mo, Bo Lu, Yonghao Long, Bohan Yang, Qi Dou, Yunhui Liu, Dong Sun
Summary: This paper proposes a learning-driven framework for image-guided laparoscopic localization and 3D reconstruction of anatomical structures. The method includes a deep perception method for depth estimation and a dense reconstruction algorithm to represent the scene. Experimental results show the superior performance of the proposed method in anatomy reconstruction and laparoscopic localization.
IEEE TRANSACTIONS ON BIOMEDICAL ENGINEERING
(2023)
Article
Automation & Control Systems
Yingxin Huo, Xiang Li, Xuan Zhang, Xiu Li, Dong Sun
Summary: This article presents an adaptive intention-driven variable impedance controller for wearable robots, which estimates human motion intention and regulates the dynamic interaction between the human and the robot. The proposed controller improves estimation accuracy and enables safe and efficient interaction.
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
(2023)
Article
Automation & Control Systems
Lin Hou, Yong Peng, Dong Sun
Summary: This study proposes a hybrid framework that incorporates a stochastic approach and an integrated optimization strategy to improve train crashworthiness and reduce passenger crash injuries. The stochastic approach evaluates the statistic characteristics of system responses and quantifies the contribution ranking of uncertain parameters to response variations. The optimization strategy solves the nonuniqueness of Pareto optimal solutions and improves the passive safety of the railway industry.
IEEE TRANSACTIONS ON INDUSTRIAL INFORMATICS
(2023)
Article
Robotics
Qiqiang Hu, Erbao Dong, Dong Sun
Summary: The article introduces a soft modular climbing robot called Smcbot, which demonstrates good adaptability and motion capability on different surface environments. The robot is assembled based on soft body modules and feet modules, providing large-scale motion and high output load, and its performance is verified through theoretical models and experiments.
IEEE TRANSACTIONS ON ROBOTICS
(2023)
Article
Biochemistry & Molecular Biology
Bai Zhang, Xueyi Li, Kai Tang, Ying Xin, Guanshuo Hu, Yufan Zheng, Keming Li, Cunyu Zhang, Youhua Tan
Summary: Tumor cells with the ability to adhere to specific organ endothelium exhibit enhanced metastatic tropism to that target organ.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Engineering, Biomedical
Shuxun Chen, Zhiwu Tan, Pan Liao, Yanfang Li, Yun Qu, Qi Zhang, Mingxuan Yang, Kannie Wai Yan Chan, Li Zhang, Kwan Man, Zhiwei Chen, Dong Sun
Summary: This study reports the fabrication of biocompatible and biodegradable GelMA microrobots through two-photon polymerization, and demonstrates programmed degradation and drug release by varying the local exposure dose. The GelMA microspheres are further functionalized for the delivery of DNA vaccines to dendritic cells and primary cells, leading to fast, enhanced, and durable antigen expression in mice.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Robotics
Qiqiang Hu, Junyang Li, Erbao Dong, Dong Sun
Summary: This letter introduces a soft and scalable crawling robot with active adaptability to various surfaces. The robot consists of a programmable origami body and electrostatic pads for adhesion. Different cross-sectional shapes of the origami body and incorporated artificial muscles allow the robot to perform multimodal movements. Additionally, the robot can manipulate objects using a lightweight soft origami gripper.
IEEE ROBOTICS AND AUTOMATION LETTERS
(2023)
Article
Automation & Control Systems
Wendi Gao, Cunlang Liu, Xiangguang Han, Libo Zhao, Qijing Lin, Zhuangde Jiang, Dong Sun
Summary: This work proposes a high-resolution microelectromechanical system capacitive force sensor for measuring ultralow multiphysics. By designing a bionic swallow structure with multiple feathered comb arrays, the chip dimension is reduced and the undesirable mechanical cross-coupling effect is eliminated. The comb structure is optimized for maximum sensitivity, linearity, and compact chip size. A novel interconnection configuration is utilized to minimize interferences from parasitic capacitance and electrostatic forces. The proposed sensor demonstrates significant improvement over existing capacitive sensors and is feasible for ultralow multiphysics measurement in biomedical applications.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Biochemical Research Methods
Yang Jiao, Fei Pan, Shuxun Chen, Zhangyan Guan, Dong Sun
Summary: This paper reports a new method to produce a genetically engineered macrophage cell line with enhanced immunity through microinjection. By injecting an expression plasmid carrying the Tlr4 gene into a mouse macrophage cell line, a new stable cell line overexpressing the target gene can be constructed. The injected macrophages showed enhanced inhibition effect on tumor cell migration and invasion through activation of downstream signaling pathways.
IEEE TRANSACTIONS ON NANOBIOSCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Yanfang Li, Dingran Dong, Yun Qu, Junyang Li, Shuxun Chen, Han Zhao, Qi Zhang, Yang Jiao, Lei Fan, Dong Sun
Summary: This paper presents the development of a biodegradable microrobot for on-demand multidrug delivery. By combining magnetic targeting transportation with tumor therapy, the microrobot enhances the synergistic effect of multiple drugs for cancer treatment. The microrobot consists of a 3D-printed structure with hydrogel components for drug storage and controlled release. In vivo studies show that the microrobots improve tumor inhibition and induce a response to anti-angiogenesis. This versatile microrobot provides a promising approach for effective combination therapy in cancer treatment.
Article
Multidisciplinary Sciences
Siu Hong Dexter Wong, Bohan Yin, Zhuo Li, Weihao Yuan, Qin Zhang, Xian Xie, Youhua Tan, Nathalie Wong, Kunyu Zhang, Liming Bian
Summary: Biophysical cues of a rigid tumor matrix play a crucial role in promoting cancer cell malignancy. Our study demonstrates that when cancer cells are grown in stiff hydrogels, which expose them to significant confining stress, they exhibit enhanced growth and activation of specific signaling pathways related to stemness. This phenomenon is mediated by the heat shock protein (Hsp) and its downstream signaling molecules, and can be suppressed by culturing the cells in softer hydrogels or relieving the stress in stiff hydrogels. Mechanopriming of cancer cells through three-dimensional culture enhances their tumorigenicity and metastatic potential in animal models, while inhibiting Hsp70 improves the effectiveness of chemotherapy. This study highlights the critical role of Hsp70 in regulating cancer cell malignancy under mechanically stressed conditions and its potential as a therapeutic target.
Article
Engineering, Mechanical
Wendi Gao, Bian Tian, Cunlang Liu, Yingbiao Mi, Chen Jia, Libo Zhao, Tao Liu, Nan Zhu, Ping Yang, Qijing Lin, Zhuangde Jiang, Dong Sun
Summary: In this work, a bionic swallow structure design norm was developed to achieve mechanical decoupling, and a bionic feather comb distribution strategy and a portable readout circuit were proposed to eliminate electrostatic interferences. The sensor exhibited high sensitivity and resistance to disturbances, making it suitable for ultralow biophysical force measurement.
FRONTIERS OF MECHANICAL ENGINEERING
(2023)
Article
Engineering, Biomedical
Bing Hu, Ying Xin, Guanshuo Hu, Keming Li, Youhua Tan
Summary: Tumor cells metastasize via blood circulation, and circulating tumor cells (CTCs) are vulnerable to elimination. Natural killer (NK) cells are major lymphocytes for killing CTCs under fluid shear stress (FSS) in vasculature. The influence of FSS on NK cell's cytotoxicity against CTCs remains unclear. This study reveals that FSS enhances NK cell's cytotoxicity by inducing NK activation and granzyme B entry into target cells.
APL BIOENGINEERING
(2023)
Article
Automation & Control Systems
Adnan Shakoor, Mingyang Xie, Wendi Gao, Muhammad Majid Gulzar, Jiayu Sun, Dong Sun
Summary: Mitochondrial dysfunction is significant in fatal diseases like aging, cancer, and Alzheimer's. This article presents a novel technique using a robot-aided microneedle and optical tweezers-based micromanipulation system to control the quality and quantity of mitochondria injected into single live cells. The system successfully transfers healthy mitochondria into single live cells while precisely controlling the quantity and quality of injected mitochondria.
IEEE TRANSACTIONS ON AUTOMATION SCIENCE AND ENGINEERING
(2023)
Article
Automation & Control Systems
Xiaowen Kong, Hangjie Mo, Erbao Dong, Yunhui Liu, Dong Sun
Summary: In the existing surgery process, manual adjustment of laparoscopes by surgeons during operation can be distracting and slow down the process. This study presents a data-driven control method that uses a continuum laparoscope to automatically adjust the field of view by tracking surgical instruments. The proposed method achieves higher detection precision and provides more optional keypoints for tracking compared to other methods, as validated by simulation and experiments.
ADVANCED INTELLIGENT SYSTEMS
(2023)
