Article
Mechanics
Xiaohong Wang, Zhiqiang Zhong, Tao Zeng, Guodong Xu, Yuhua Cui, Kun Zhang
Summary: An analytical model for predicting the heat transfer in C/SiC composite pyramidal lattice core sandwich structures is proposed, taking into account the radiation emitted from the struts. The model considers the temperature gradient in the thickness direction of the lattice core sandwich structures. Comparisons with experimental data and analytical results indicate that the effect of radiation emitted from the struts on the equivalent thermal conductivity becomes more significant at high temperature and should not be overlooked. The proposed model provides a more accurate estimation of the high-temperature equivalent thermal conductivity of pyramidal lattice core sandwich structures compared to models that neglect the radiation of struts. The effects of geometry, solid emissivity, and temperature on the equivalent thermal conductivity of pyramidal lattice core sandwich structures are also thoroughly discussed.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Aerospace
Yanfei Chen, Lu Zhang, Chunwang He, Rujie He, Baosheng Xu, Ying Li
Summary: This study investigated the heat transfer mechanism and thermal insulation performance of the fabricated C/SiC corrugated LCSP using experimental, theoretical, and numerical simulated approaches, finding that cavity radiation plays a dominant role in predicting equivalent thermal conductivity. To reduce or inhibit cavity radiation, multilayer LCSPs and one-layer LCSP filled with aerogel were designed as solutions.
AEROSPACE SCIENCE AND TECHNOLOGY
(2021)
Article
Polymer Science
Junqing Hong, Chunyan Shen, Weiqing Liu, Hai Fang, Laiyun Yang
Summary: The study developed a new analysis model for sandwich lattice composite panel, which was shown to have great potential and superiority through numerical calculations.
Article
Materials Science, Multidisciplinary
Chuncheng Wei, Zhongya Zhang, Xuefei Ma, Lanyong Liu, Yun Wu, Daoqian Li, Peng Wang, Xianghan Duan
Summary: Laminated ZrB2-SiC/Si3N4 ceramics with Si3N4 whiskers as interface layer exhibit improved toughness, ablation resistance and higher thermal conductivity compared to monolithic ZrB2-SiC ceramics.
Article
Construction & Building Technology
K. J. Kontoleon, K. Georgiadis-Filikas, K. G. Tsikaloudaki, T. G. Theodosiou, C. S. Giarma, C. G. Papanicolaou, T. C. Triantafillou, E. K. Asimakopoulou
Summary: This study focuses on the fire defensiveness of an innovative precast concrete sandwich wall-system through numerical and experimental validation, showing a good agreement between the results. It highlights the importance of computational simulations in assessing temperature precision and confirms the system's insulation ability under fire exposure.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Engineering, Civil
Majid M. A. Kadhim, Akram Jawdhari, Amir Fam
Summary: This study develops design equations for thermal bowing and composite degree in concrete sandwich panels (CSPs) based on a comprehensive parametric study. The equations provide better predictions for deformation and composite degree, improving the design efficiency and economic feasibility of CSPs.
ENGINEERING STRUCTURES
(2023)
Article
Engineering, Civil
Moslem Najafi, Reza Eslami-Farsani
Summary: The study aimed to enhance the mechanical properties and environmental durability of traditional PU foam cored-sandwich panels through introducing innovative structural modifications, resulting in significant improvements. The proposed multilayered hybrid core consisting of agglomerate cork and PU foam, orthogonally stiffened by a thin-walled lattice structure, showed enhanced properties when tested for environmental durability and mechanical performance.
THIN-WALLED STRUCTURES
(2021)
Article
Chemistry, Analytical
Yunfeng Yu, Honghao Yue, Feiyang Wen, Haihong Zhao, Aiyu Zhou
Summary: This paper presents a method for calculating the electromagnetic force on moving aluminum honeycomb sandwich panels in a magnetic field. By introducing an equivalent conductivity tensor, the panels can be treated as homogeneous structures to calculate the induced electromagnetic forces.
Article
Thermodynamics
Biaojie Yan, Bingqing Li, Xin Wang, Tao Fa, Pengcheng Zhang
Summary: A new model combining a neural network with the finite element method was constructed to measure the thermal conductivity of materials at room temperature. The accuracy of the model was validated using experimental data and it is suitable for most ceramics and ceramic-based composites.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Multidisciplinary Sciences
Liujun Xu, Jinrong Liu, Guoqiang Xu, Jiping Huang, Cheng- Wei Qiu
Summary: In an active thermal lattice composed of a stationary solid matrix and rotating solid particles, giant thermal chirality is generated by breaking the Onsager reciprocity relation through rotation, which is about two orders of magnitude larger than ever reported. Anisotropic thermal chirality is achieved by breaking the rotation invariance of the active lattice, bringing effective thermal conductivity to a region unreachable by the thermal Hall effect.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Polymer Science
Ali Farokhi Nejad, Seyed Saeid Rahimian Koloor, Syed Mohd Saiful Azwan Syed Hamzah, Mohd Yazid Yahya
Summary: This study focuses on the mechanical behaviour of through-thickness polymer, pin-reinforced foam core sandwich panels subjected to indentation and low impact loading. Results show that using polymeric pins significantly increases the flexural strength of the panel under impact loading and raises the impact resistance of the pin-reinforced foam core panel. The size of pins has a significant influence on flexural behavior while the sample is under a moderate strain rate.
Article
Polymer Science
Jorge-Enrique Rivera-Salinas, Karla-Monzerratt Gregorio-Jauregui, Heidi-Andrea Fonseca-Florido, Carlos-Alberto avila-Orta, Eduardo Ramirez-Vargas, Jose-Antonio Romero-Serrano, Alejandro Cruz-Ramirez, Victor-Hugo Gutierrez-Perez, Seydy-Lizbeth Olvera-Vazquez, Lucero Rosales-Marines
Summary: The thermal performance of closed-cell foams relies on thermal conductivity, with convective contribution often ignored in favor of conductive contribution for analysis. The criteria for disregarding convective heat flux based on cell diameter is inconsistent across literature, while natural convection in porous materials proves worthy of research. Heat transported by convection accounts for about 20% of heat conducted within foam at Ra=10(3), influencing average conductivity by about 4.5%.
Article
Engineering, Electrical & Electronic
Xintong Zhao, Wei Wu, Dietmar Drummer, Yi Wang, Sufei Cui, Chao Liu, Zijian Lu, Shuo Li, Qiming Chen
Summary: Thermal conductive composites can be constructed by self-assembling 3D graphene aerogels, but defects and edges in the aerogels limit their thermal conductivity. This study developed a facile method to synthesize SiC nanowires on the edges of graphene sheets, which reduced phonon scattering and enhanced thermal conduction efficiency. The results showed that the modified aerogels achieved high thermal conductivity at low filler loading.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Thermodynamics
Neeraj Kumar Sharma
Summary: This paper proposes a finite element simulation approach for studying steady-state heat transfer in composites. By analyzing representative volume elements generation, meshing approaches, and boundary conditions, it is found that random orientation and interpenetration of particles can lead to higher effective thermal conductivity in composites.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Mechanical
Jianfeng Li, Qinghua Qin, Jianxun Zhang
Summary: This study investigates the internal blast resistance of metal sandwich cylinder with lattice cores, focusing on the effects of core geometry, arrangement, wall thickness, shell mass distribution and cover. Results show that core geometry and arrangement significantly impact the blast resistance and deformation mechanism of sandwich cylinders. Asymmetric design of inner and outer shells enhances internal blast resistance of the sandwich cylinders.
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
(2021)
Article
Electrochemistry
Yikun Wu, Shengxin Zhu, Zenghui Wang, Peijun Zhou, Fuguo Xie, Jiang Zhou, Hao-Sen Chen, Wei-Li Song, Daining Fang
Summary: This study focuses on the strain of the steel case during operation of 18650 Li-ion battery cells, revealing an inhomogeneous strain distribution issue after long-term cycling. It is identified that the gap between the jelly roll and steel case is the root cause of different strain distribution on the steel case. It is suggested to pay attention to the gap in the engineering design of cylindrical Li-ion battery cells with next-generation silicon composite electrode.
ELECTROCHIMICA ACTA
(2021)
Article
Engineering, Mechanical
Le Yang, Na Li, Likun Hu, Shaoqi Wang, Lin Wang, Jiang Zhou, Wei-Li Song, Lei Sun, Tai-Song Pan, Hao-Sen Chen, Daining Fang
Summary: A novel in-situ temperature sensing framework is proposed in this study, incorporating temperature sensors with a signal transmission solution to transmit internal measurements outside batteries without interfering their normal state. Extensive experimental results validate the effectiveness of this framework, showing promising potential for in-situ battery health monitoring and promoting the development of smart batteries.
ACTA MECHANICA SINICA
(2021)
Article
Materials Science, Multidisciplinary
P. Wang, K. F. Wang, B. L. Wang, L. Xi, K. Sano, T. Shimada, H. Hirakata, D. N. Fang
Summary: This study aims to stably and accurately measure the interlaminar fracture toughness (IFT) of multilayered Bi2Te3 for evaluating the reliability of its thermoelectric devices. By developing a tapered cantilever bending (TCB) experiment, the measurement of IFT for Bi2Te3 was successfully achieved, providing a new method for assessing multilayered materials.
EXPERIMENTAL MECHANICS
(2022)
Article
Mechanics
Ming Mei, Yujia He, Xujing Yang, Kai Wei
Summary: An analytical analysis was established to characterize the sliding and shearing behavior for plain woven fabrics during hemisphere preforming, with experimental results showing high agreement with theoretical analysis, demonstrating its effectiveness. Moreover, the draping degree of the fabric increases non-linearly with increasing punch depth.
INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
(2021)
Article
Materials Science, Composites
Qiubo Li, Yihui Chen, Yanfei Chen, Shigang Ai, Daining Fang
Summary: This study aims to investigate the effect of void defects on the failure behavior and strength of C/SiC composites. Micro-computed tomography and finite element models were used to study the influence of void volume fractions and geometry on the materials. This research is important for better understanding the impact of defects on the mechanical behavior of composite materials.
APPLIED COMPOSITE MATERIALS
(2022)
Article
Mechanics
Dong Wu, Zeang Zhao, Hongshuai Lei, Hao-Sen Chen, Qiang Zhang, Panding Wang, Daining Fang
Summary: Natural tissues can self-strengthen through biological growth, while synthetic materials are typically static. The concept of bio-inspired materials aims to develop materials with dynamically programmable performances. A solvent-free elastomer composite system is proposed in this study, which can be strengthened through tunable self-growth cycles and is compatible with Digital Light Processing (DLP) 3D printing for fast manufacturing of high-precision structures.
COMPOSITE STRUCTURES
(2022)
Article
Engineering, Multidisciplinary
Huimin Li, Baosheng Liu, Lei Ge, Yi Chen, Huayong Zheng, Daining Fang
Summary: This study investigates the mechanical performance of continuous carbon fiber reinforced PLA composites printed in vacuum. Special 3D printing equipment and raw material production devices are utilized to improve impregnation effect, reduce porosity, and increase flexural strength and modulus. Research shows that printing temperature positively influences mechanical properties, while printing speed and layer thickness have negative effects.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Materials Science, Composites
Chunwang He, Jingran Ge, Xiaofei Cao, Yanfei Chen, Haosen Chen, Daining Fang
Summary: Manufacturing uncertainties in composites, such as carbon fiber deviations and voids, can impact mechanical properties. Although experiments have been conducted, quantitative characterization of fiber radius and shape deviations, and matrix void content, remain a challenge. A computational micromechanics study was conducted to understand the effects of manufacturing uncertainties on the mechanical behavior of UD composites under different loading conditions. The methodology involved establishing constitutive laws for constituents, modeling RVEs with deviations based on observations, and predicting stress-strain curves and failure modes.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Composites
Yujia He, Ming Mei, Kai Wei, Xujing Yang, Shuyong Duan, Xu Han
Summary: The study found that changes in stitching pattern and space influence the interlaminar shear performance and damage suppression mechanism of stitched composites. Reduction in stitching space enhances shear performance, while appropriate stitching patterns can increase the final load and suppress damage propagation.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Ceramics
Yanfei Chen, Shigang Ai, Pan Wang, Daining Fang
Summary: A physically based constitutive model for braided silicon carbide ceramic matrix composites (CMCs-SiC) at ultra-high temperature is developed, considering material orthotropy, temperature effect, tension-compression asymmetry, and crack closure effect. The model, implemented using a return mapping algorithm, shows good agreement with experimental data in predicting stress-strain relationships at different stress states and temperatures.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Jiaxin Chen, Hongtao Wang, Kaiyu Wang, Zhuoyi Wei, Wentao Xu, Kai Wei
Summary: The study analyzes the mechanical performances of a series of lightweight metamaterials and finds that enhanced mechanical properties including high stiffness and strength can be achieved by adjusting cell geometries and base materials, especially Category A metamaterials show excellent geometrically independent yield and buckling strengths. The research provides references for avoiding potential failures by identifying failure modes and criteria under various loadings, geometries, and base materials, and reveals that tailored CTE, relative density, stiffness, and strength performances make the metamaterials suitable for fulfilling customized engineering requirements, with metamaterial BH particularly suitable for low CTE, low density, high stiffness, and strength applications.
MECHANICS OF MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Jixiang Qi, Zihao Chen, Peng Jiang, Wenxia Hu, Yonghuan Wang, Zeang Zhao, Xiaofei Cao, Shushan Zhang, Ran Tao, Ying Li, Daining Fang
Summary: Active mechanical metamaterials combine mechanical metamaterials with smart materials for superior performance, with structures designed based on principles such as phase transition and strain mismatch. External stimuli like temperature, chemicals, and light are used for control and efficiency.
Article
Chemistry, Physical
Shuo Yang, Qidong Yang, Zhaoliang Qu, Kai Wei
Summary: This study investigates the influence of manufacturing defects on the mechanical behavior of LPBFed Invar 36 alloy fabricated at different scanning speeds. The presence of different defects leads to differences in plastic deformation and brittle failure behavior of the alloy.
Article
Chemistry, Physical
Jianqin Wu, Lu Zhang, Wenqing Wang, Ruyue Su, Xiong Gao, Suwen Li, Gang Wang, Rujie He
Summary: This study presents a novel method for preparing porous SiC ceramics using DIW process, and investigates their mechanical and wave absorption properties. The nozzle diameter has an important role in maintaining the structure of the SiC green part, while the sintering temperature affects the porosity and compressive strength of the porous SiC ceramics. Porous SiC ceramics sintered at 1650 degrees C exhibit high strength and excellent EM wave absorption properties.
Article
Multidisciplinary Sciences
Handong Jiao, Zhaoliang Qu, Shuqiang Jiao, Yang Gao, Shijie Li, Wei-Li Song, Haosen Chen, Hongmin Zhu, Rongqi Zhu, Daining Fang
Summary: High-temperature electrochemistry is widely used but real-time observations and in-depth understanding of its evolution are limited. In this study, a high-temperature electrolysis facility with in situ x-ray computer microtomography was developed to probe the dynamic evolution of electrodes. The results provide insights into the efficiency and mechanisms of the process, as well as real-time optimization.
Article
Thermodynamics
Hai Zhao, Puzhen Gao, Xiaochang Li, Ruifeng Tian, Hongyang Wei, Sichao Tan
Summary: This study numerically investigates the interaction between flow-induced vibration and forced convection heat transfer in a tube bundle. The results show that the impact of flow-induced vibration on heat transfer varies in different flow velocity regions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rohit Chintala, Jon Winkler, Sugirdhalakshmi Ramaraj, Xin Jin
Summary: The current state of fault detection and diagnosis for residential air-conditioning systems is expensive and not suitable for widespread implementation. This paper proposes a cost-effective solution by introducing an automated fault detection algorithm as a screening step before more expensive tests can be conducted. The algorithm uses home thermostats and local weather information to identify thermodynamic parameters and detect high-impact air-conditioning faults.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
A. Azimi, N. Basiri, M. Eslami
Summary: This paper presents a novel optimization algorithm for improving the water-film cooling system of photovoltaic panels, resulting in a significant increase in net energy generation.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Duc-Thuan Phung, Chin-Hsiang Cheng
Summary: In this study, a novel CFDMD model is used to analyze and investigate the behavior of thermal-lag engines (TLE). The study shows that the CFDMD model effectively captures the thermodynamic behavior of the working gas and the dynamic behavior of the engine mechanism. Additionally, the study explores the temporal evolution of engine speed and the influence of various parameters on shaft power and brake thermal efficiency. The research also reveals the existence of a thermal-lag phenomenon in TLE.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Haiying Yang, Yinjie Shen, Lin Li, Yichen Pan, Ping Yang
Summary: The purpose of this article is to find a measure to improve the interfacial thermal transfer of graphene/silicon heterojunction. Through molecular dynamics simulation, it is found that surface modification can significantly reduce the thermal resistance, thereby improving the thermal conductivity of the graphene/silicon interface.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Qiong Wu, Yancheng Wang, Haonan Zhou, Xingye Qiu, Deqing Mei
Summary: This article introduces a visible methanol steam reforming microreactor, which uses an optical crystal as an observation window and measures the reaction temperature in real-time using infrared thermography. The results show that under lower oxygen to carbon ratio conditions, the microreactor has a higher heating rate and a stable gradient in temperature distribution.
APPLIED THERMAL ENGINEERING
(2024)
Review
Thermodynamics
Giulia Manco, Umberto Tesio, Elisa Guelpa, Vittorio Verda
Summary: In the past decade, there has been a growing interest in studying energy systems for the combined management of power vectors. Most of the published works focus on finding the optimal design and operations of Multi Energy Systems (MES). However, for newcomers to this field, understanding how to achieve the desired optimization details while controlling computational expenses can be challenging and time-consuming. This paper presents a novel approach to analyzing the existing literature on MES, with the aim of guiding practical development of MES optimization. Through the discussion of six case studies, the authors provide a mathematical formulation as a reference for building the model and emphasize the impact of different aspects on the problem nature and solver selection. In addition, the paper also discusses the different approaches used in the literature for incorporating thermal networks and storage in the optimization of multi-energy systems.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xuepeng Yuan, Caiman Yan, Yunxian Huang, Yong Tang, Shiwei Zhang, Gong Chen
Summary: In this study, a multi-scale microgroove wick (MSMGW) was developed by laser irradiation, which demonstrated superior capillary performance. The surface morphology and performance of the wick were affected by laser scan pitch, laser power, repetition frequency, and scanning speed. The MSMGW showed optimal capillary performance in alumina material and DI water as the working fluid.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Maofei Mei, Feng Hu, Chong Han
Summary: This paper proposes an effective local search method based on detection of droplet boundaries for understanding the dynamic process of droplet growth during dropwise condensation. The method is validated by comparing with experimental data. The present simulation provides an effective approach to more accurately predict the nucleation site density in future studies.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Rahul Kumar Sharma, Ashish Kumar, Dibakar Rakshit
Summary: The study explores the use of phase change materials (PCM) as a retrofit with Heating Ventilation and Air-conditioning systems (HVAC) to reduce energy consumption and improve air quality. By incorporating PCM with specific thickness and fin configurations, significant energy savings can be achieved in comparison to standard HVAC systems utilizing R134a. This research provides policymakers with energy-efficient and sustainable solutions for HVAC systems to combat climate change.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Zhenhua Ren, Xiangjin Meng, Xingang Qi, Hui Jin, Yunan Chen, Bin Chen, Liejin Guo
Summary: This paper investigates the heat transfer mechanism and factors influencing thermal radiation in the process of supercritical water gasification (SCWG) of coal, and proposes a comprehensive numerical model to simulate the process. Experimental validation results show that thermal radiation accounts for a significant proportion of the total heat exchange in the reactor and a large amount of radiant energy exists in the important spectral range of supercritical water. Enhancing radiative heat transfer can effectively increase the temperature of the reaction medium and the gasification rate.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Mauro Abela, Mauro Mameli, Sauro Filippeschi, Brent S. Taft
Summary: Pulsating Heat Pipes (PHP) are passive two-phase heat transfer devices with a simple structure and high heat transfer capabilities. The actual unpredictability of their dynamic behavior during startup and thermal crisis hinders their large-scale application. An experimental apparatus is designed to investigate these phenomena systematically. The results show that increasing the number of evaporator sections and condenser temperature improves the performance of PHP. The condenser temperature also affects the initial liquid phase distribution and startup time.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Ke Gan, Ruilian Li, Yi Zheng, Hui Xu, Ying Gao, Jiajie Qian, Ziming Wei, Bin Kong, Hong Zhang
Summary: A 3-dimensional enhanced heat pipe radiator has been developed to improve heat dissipation and temperature uniformity in cooling high-power electronic components. Experimental results show that the radiator has superior heat transfer performance compared to a conventional aluminum fin radiator under different heating powers and wind speed conditions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xinyi Zhang, Shuzhong Wang, Daihui Jiang, Zhiqiang Wu
Summary: This study focuses on recovering waste heat from blast furnace slag using dry centrifugal pelletizing technology. A comprehensive two-dimensional model was developed to analyze heat transfer dynamics and investigate factors influencing heat exchange efficiency. The findings have important implications for optimizing waste heat recovery and ensuring safe operations.
APPLIED THERMAL ENGINEERING
(2024)
Article
Thermodynamics
Xincheng Wu, An Zou, Qiang Zhang, Zhaoguang Wang
Summary: The boosting heat generation rate of high-performance processors is challenging traditional cooling techniques. This study proposes a combined design of active jet intermittency and passive surface modification to enhance heat transfer.
APPLIED THERMAL ENGINEERING
(2024)