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学者姓名:王铁军

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Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites Scopus
期刊论文 | 2018 , 38 (1) , 1-28 | Journal of the European Ceramic Society
WoS CC Cited Count: 21 SCOPUS Cited Count: 23
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Abstract :

© 2017 Elsevier Ltd Carbon/carbon (C/C) composites are considered as one of the most promising materials in structural applications owing to their excellent mechanical properties at high temperature. However, C/C composites are susceptible to high-temperature oxidation. Matrix modification and coating technology with ultra-high temperature ceramics (UHTCs) have proved to be highly effective to improve the oxidation and ablation resistance of C/C composites. In this paper, recent advances in oxidation and ablation resistance of C/C composites were firstly reviewed, with attention to oxidation and ablation properties of C/C composites coated or modified with UHTCs. Then, several new methods in improving oxidation and ablation resistance were discussed, such as by using nanostructures to toughen UHTCs coatings or carbon matrix and the combination of matrix modification and coating technology. In addition, relevant ablation tests with scaled models were also briefly introduced. Finally, some open problems and future challenges were highlighted in the development and application of these materials.

Keyword :

Ablation Carbon/carbon composite Coating Matrix modification Oxidation

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GB/T 7714 Jin, Xiaochao , Fan, Xueling , Lu, Chunsheng et al. Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites [J]. | Journal of the European Ceramic Society , 2018 , 38 (1) : 1-28 .
MLA Jin, Xiaochao et al. "Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites" . | Journal of the European Ceramic Society 38 . 1 (2018) : 1-28 .
APA Jin, Xiaochao , Fan, Xueling , Lu, Chunsheng , Wang, Tiejun . Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites . | Journal of the European Ceramic Society , 2018 , 38 (1) , 1-28 .
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Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites EI SCIE
期刊论文 | 2018 , 38 (1) , 1-28 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
WoS CC Cited Count: 16
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Abstract :

Carbon/carbon (C/C) composites are considered as one of the most promising materials in structural applications owing to their excellent mechanical properties at high temperature. However, C/C composites are susceptible to high-temperature oxidation. Matrix modification and coating technology with ultra-high temperature ceramics (UHTCs) have proved to be highly effective to improve the oxidation and ablation resistance of C/C composites. In this paper, recent advances in oxidation and ablation resistance of C/C composites were firstly reviewed, with attention to oxidation and ablation properties of C/C composites coated or modified with UHTCs. Then, several new methods in improving oxidation and ablation resistance were discussed, such as by using nanostructures to toughen UHTCs coatings or carbon matrix and the combination of matrix modification and coating technology. In addition, relevant ablation tests with scaled models were also briefly introduced. Finally, some open problems and future challenges were highlighted in the development and application of these materials.

Keyword :

Oxidation Ablation Carbon/carbon composite Coating Matrix modification

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GB/T 7714 Jin, Xiaochao , Fan, Xueling , Lu, Chunsheng et al. Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2018 , 38 (1) : 1-28 .
MLA Jin, Xiaochao et al. "Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38 . 1 (2018) : 1-28 .
APA Jin, Xiaochao , Fan, Xueling , Lu, Chunsheng , Wang, Tiejun . Advances in oxidation and ablation resistance of high and ultra-high temperature ceramics modified or coated carbon/carbon composites . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2018 , 38 (1) , 1-28 .
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Mechanisms governing the failure modes of dense vertically cracked thermal barrier coatings EI SCIE Scopus
期刊论文 | 2018 , 189 , 451-480 | ENGINEERING FRACTURE MECHANICS
WoS CC Cited Count: 3
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The introduction of dense vertical cracks in ceramic top coat has been recognized as an efficient way to improve the strain tolerance and service durability of thermal barrier coatings (TBCs). However, further growth of these pre-existing cracks may cause the delamination of the coatings to form various failure modes. The motivation of this work is to numerically study the mechanisms that govern the formation of failure modes in dense vertically cracked TBCs. The effects of vertical crack density and material properties on the fracture behaviors are discussed. An energy-based criterion is employed to deal with the surface crack deflection/penetration behavior at a bimaterial interface, and an interaction integral method for discontinuous materials is utilized to evaluate the fracture parameters. The failure maps of TBCs are constructed by examining the continuous variations of crack tip driving forces over the whole fracture process. It is verified that the interfacial fracture resistance could be enhanced by introducing high-density vertical cracks. At the same time, these cracks tend to penetrate into the bond coat that results in debonding at bond coat/substrate interface or at both interfaces. In addition to benefit in alleviating the interfacial mismatch stress, it is found that the high-density vertical cracks give toughening increases to the coating system by releasing more energy from multiple paths. Moreover, the effects of mixed-mode interface toughness and initially residual stress on the formations of failure mode are discussed. (C) 2017 Elsevier Ltd. All rights reserved.

Keyword :

J-integral Thermal barrier coatings Delamination Surface crack Finite element analysis

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GB/T 7714 Li, Biao , Fan, Xueling , Okada, Hiroshi et al. Mechanisms governing the failure modes of dense vertically cracked thermal barrier coatings [J]. | ENGINEERING FRACTURE MECHANICS , 2018 , 189 : 451-480 .
MLA Li, Biao et al. "Mechanisms governing the failure modes of dense vertically cracked thermal barrier coatings" . | ENGINEERING FRACTURE MECHANICS 189 (2018) : 451-480 .
APA Li, Biao , Fan, Xueling , Okada, Hiroshi , Wang, Tiejun . Mechanisms governing the failure modes of dense vertically cracked thermal barrier coatings . | ENGINEERING FRACTURE MECHANICS , 2018 , 189 , 451-480 .
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A semi-analytical model for predicting stress evolution in multilayer coating systems during thermal cycling EI SCIE Scopus
期刊论文 | 2018 , 135 , 31-42 | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
WoS CC Cited Count: 2
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Abstract :

A semi-analytical model is developed to predict the stress evolution within a multilayer coating system during cyclic thermal loading. This model takes into account the temperature gradient across the thickness of the system, which is the common thermal conditions of the high-temperature protective coatings. The creep deformation and the oxide scale growth processes at the elevated temperature are considered in the theoretical framework. The cases of thermal barrier coatings are analyzed, and finite element analysis is performed for comparisons. The results show that the stress and creep strain fields solved by the semi-analytical method are consistent with the finite element predictions, which confirms the validity of the proposed model. The effects of creep in the system on the stresses and curvature evolutions are discussed. It is found that the large creep rates in the coatings or substrate could facilitate the stress relaxation processes in both of them, whereas the stress evolutions in the oxide scale are virtually unaffected. The curvature of the system may reverse from the concave to convex shape during the thermal cycling when the fast creep relaxations occur in the coatings. Furthermore, the creep deformations in the oxide scale provide benefits in relaxing the huge growth stresses so that the better durability of the system could be obtained. (C) 2017 Elsevier Ltd. All rights reserved.

Keyword :

Creep relaxation Thermal cycling Oxidation Multilayer coating system Stress evolution

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GB/T 7714 Li, Biao , Fan, Xueling , Zhou, Kun et al. A semi-analytical model for predicting stress evolution in multilayer coating systems during thermal cycling [J]. | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2018 , 135 : 31-42 .
MLA Li, Biao et al. "A semi-analytical model for predicting stress evolution in multilayer coating systems during thermal cycling" . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 135 (2018) : 31-42 .
APA Li, Biao , Fan, Xueling , Zhou, Kun , Wang, Tiejun . A semi-analytical model for predicting stress evolution in multilayer coating systems during thermal cycling . | INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES , 2018 , 135 , 31-42 .
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A micro-structure based constitutive model for anisotropic stress-strain behaviors of artery tissues EI SCIE Scopus
期刊论文 | 2018 , 139 , 55-64 | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES
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Abstract :

Many kinds of soft composite materials such as biological tissues exhibit strong anisotropic features. In particular, hyperelastic stress-strain behaviors of artery tissues have been long studied, since they play an important role in the cardio-vasculature. While many constitutive models were proposed, they usually failed to capture the anisotropic stress-strain behaviors under different ratios for biaxial loading. In this paper an anisotropic constitutive model for soft composite materials is presented, driven by the underlying microstructure of the fibers. A new structure-based tensor is presented to map the macroscopic deformation to the fiber stretch. One additional parameter is introduced to tune the coupling of stretch in two directions in order to capture the relatively weak anisotropic coupling. The multiaxial tensile tests with a range of anisotropic loading ratios, which was intended to capture the full spectrum of anisotropic loadings, were conducted on animal artery tissues. Model parameters were determined either directly from histological measurements or calibrated by analyzing the physical nature. Very good agreement between model and experimental results were obtained. To our best knowledge, it is the first demonstration to show the remarkable fitting results for the loading ratios that cover the full spectrum of anisotropy. (C) 2018 Elsevier Ltd. All rights reserved.

Keyword :

Constitutive model Artery tissues Soft materials Anisotropic

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GB/T 7714 Lu, Tongqing , Chen, Zhiqiang , Qi, H. Jerry et al. A micro-structure based constitutive model for anisotropic stress-strain behaviors of artery tissues [J]. | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES , 2018 , 139 : 55-64 .
MLA Lu, Tongqing et al. "A micro-structure based constitutive model for anisotropic stress-strain behaviors of artery tissues" . | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES 139 (2018) : 55-64 .
APA Lu, Tongqing , Chen, Zhiqiang , Qi, H. Jerry , Wang, T. J. . A micro-structure based constitutive model for anisotropic stress-strain behaviors of artery tissues . | INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES , 2018 , 139 , 55-64 .
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Sintering resistance of advanced plasma-sprayed thermal barrier coatings with strain-tolerant microstructures EI SCIE Scopus
期刊论文 | 2018 , 38 (15) , 5092-5100 | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
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Abstract :

Sintering is one of the key issues in the high temperature service of thermal barrier coatings (TBCs), considering the continuously increasing operation temperature of gas-turbine for higher energy efficiency. Based on the conventional processing method of air plasma spraying (APS), suspension plasma spraying (SPS) technique has been developed recently, in order to improve the strain tolerance of TBCs. This strain tolerance of plasma sprayed TBCs is largely effected by the sintering behavior, which is presently not fully understood. In this work, evolution of mechanical properties, in terms of Young's modulus and viscosity, is systematically investigated by in-situ three-point bending test at 1200 degrees C on free-standing coatings, including micro-cracked APS, segmented APS, vertically cracked SPS and columnar structured SPS TBCs and correlated to the microstructural evolution. Based on experimental results, power law relations are proposed for the sintering induced mechanical evolution, which deepen the understanding of the sintering behavior of plasma-sprayed TBCs.

Keyword :

Sintering Plasma-spraying Thermal barrier coatings Mechanical properties

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GB/T 7714 Lv, Bowen , Mucke, Robert , Fan, Xueling et al. Sintering resistance of advanced plasma-sprayed thermal barrier coatings with strain-tolerant microstructures [J]. | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2018 , 38 (15) : 5092-5100 .
MLA Lv, Bowen et al. "Sintering resistance of advanced plasma-sprayed thermal barrier coatings with strain-tolerant microstructures" . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY 38 . 15 (2018) : 5092-5100 .
APA Lv, Bowen , Mucke, Robert , Fan, Xueling , Wang, T. J. , Guillon, Olivier , Vassen, Robert . Sintering resistance of advanced plasma-sprayed thermal barrier coatings with strain-tolerant microstructures . | JOURNAL OF THE EUROPEAN CERAMIC SOCIETY , 2018 , 38 (15) , 5092-5100 .
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Impulsive Response of Rectangular Metal Sandwich Plate with a Graded Foam Core EI SCIE Scopus
期刊论文 | 2018 , 10 (6) | INTERNATIONAL JOURNAL OF APPLIED MECHANICS
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Abstract :

An analytical study considering inhomogeneous core compression is conducted to investigate the impulsive response of fully clamped rectangular metal sandwich plate with a graded foam (G F) core. The dynamic compressive properties of GF under impulsive loading are theoretically modeled antecedently. The approximate analytical predictions are achieved for the impulsive response of rectangular sandwich plate with a linear strength distributed CF core along the thickness by using the relevant loci of a new yield criterion. The analytical predictions agree well with the finite element (FE) results and indicate that the sandwich plates with negative gradient design outperform their uniform counter-parts in impulsive resistance. The present study provides an insight into understanding the blast resistance of the sandwich structures with inhomogeneous cores.

Keyword :

metal sandwich plate dynamic response Graded foam core impulsive loading

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GB/T 7714 Xiang, Chunping , Qin, Qinghua , Wang, Fangfang et al. Impulsive Response of Rectangular Metal Sandwich Plate with a Graded Foam Core [J]. | INTERNATIONAL JOURNAL OF APPLIED MECHANICS , 2018 , 10 (6) .
MLA Xiang, Chunping et al. "Impulsive Response of Rectangular Metal Sandwich Plate with a Graded Foam Core" . | INTERNATIONAL JOURNAL OF APPLIED MECHANICS 10 . 6 (2018) .
APA Xiang, Chunping , Qin, Qinghua , Wang, Fangfang , Yu, Xuehui , Wang, Mingshi , Zhang, Jianxun et al. Impulsive Response of Rectangular Metal Sandwich Plate with a Graded Foam Core . | INTERNATIONAL JOURNAL OF APPLIED MECHANICS , 2018 , 10 (6) .
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Phase-separation induced extraordinary toughening of magnetic hydrogels EI SCIE Scopus
期刊论文 | 2018 , 123 (18) | JOURNAL OF APPLIED PHYSICS
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Phase separation markedly influences the physical properties of hydrogels. Here, we find that poly (N, N-dimethylacrylamide) (PDMA) hydrogels suffer from phase separation in aqueous sodium hydroxide solutions when the concentration is higher than 2 M. The polymer volume fraction and mechanical properties show an abrupt change around the transition point. We utilize this phase separation mechanism to synthesize tough magnetic PDMA hydrogels with the in-situ precipitation method. For comparison, we also prepared magnetic poly (2-acrylamido-2-methyl-propane sulfonic acid sodium) (PNaAMPS) magnetic hydrogels, where no phase separation occurs. The phase-separated magnetic PDMA hydrogels exhibit an extraordinarily high toughness of similar to 1000 J m(-2) while non-phase-separated magnetic PNaAMPS hydrogels only show a toughness of similar to 1 J m(-2), three orders of magnitude lower than that of PDMA hydrogels. This phase separation mechanism may become a new approach to prepare tough magnetic hydrogels and inspire more applications. Published by AIP Publishing.

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GB/T 7714 Tang, Jingda , Li, Chenghai , Li, Haomin et al. Phase-separation induced extraordinary toughening of magnetic hydrogels [J]. | JOURNAL OF APPLIED PHYSICS , 2018 , 123 (18) .
MLA Tang, Jingda et al. "Phase-separation induced extraordinary toughening of magnetic hydrogels" . | JOURNAL OF APPLIED PHYSICS 123 . 18 (2018) .
APA Tang, Jingda , Li, Chenghai , Li, Haomin , Lv, Zengyao , Sheng, Hao , Lu, Tongqing et al. Phase-separation induced extraordinary toughening of magnetic hydrogels . | JOURNAL OF APPLIED PHYSICS , 2018 , 123 (18) .
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A thermovisco-hyperelastic constitutive model of HTPB propellant with damage at intermediate strain rates EI SCIE Scopus
期刊论文 | 2018 , 22 (3) , 291-314 | MECHANICS OF TIME-DEPENDENT MATERIALS
WoS CC Cited Count: 1
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The uniaxial compressive tests at different temperatures (223-298 K) and strain rates () are reported to study the properties of hydroxyl-terminated polybutadiene (HTPB) propellant at intermediate strain rates, using a new INSTRON testing machine. The experimental results indicate that the compressive properties (mechanical properties and damage) of HTPB propellant are remarkably affected by temperature and strain rate and display significant nonlinear material behaviors at large strains under all the test conditions. Continuously decreasing temperature and increasing strain rate, the characteristics of stress-strain curves and damage for HTPB propellant are more complex and are significantly different from that at room temperature or at lower strain rates. A new constitutive model was developed to describe the compressive behaviors of HTPB propellant at room temperature and intermediate strain rates by simply coupling the effect of strain rate into the conventional hyperelastic model. Based on the compressive behaviors of HTPB propellant and the nonlinear viscoelastic constitutive theories, a new thermovisco-hyperelastic constitutive model with damage was proposed to predict the stress responses of the propellant at low temperatures and intermediate strain rates. In this new model, the damage is related to the viscoelastic properties of the propellant. Meanwhile, the effect of temperature on the hyperelastic properties, viscoelastic properties and damage are all considered by the macroscopical method. The constitutive parameters in the proposed constitutive models were identified by the genetic algorithm (GA)-based optimization method. By comparing the predicted and experimental results, it can be found that the developed constitutive models can correctly describe the uniaxial compressive behaviors of HTPB propellant at intermediate strain rates and different temperatures.

Keyword :

Constitutive model HTPB propellant Visco-hyperelasticity Damage Compressive properties Intermediate strain rate

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GB/T 7714 Wang, Zhejun , Qiang, Hongfu , Wang, Tiejun et al. A thermovisco-hyperelastic constitutive model of HTPB propellant with damage at intermediate strain rates [J]. | MECHANICS OF TIME-DEPENDENT MATERIALS , 2018 , 22 (3) : 291-314 .
MLA Wang, Zhejun et al. "A thermovisco-hyperelastic constitutive model of HTPB propellant with damage at intermediate strain rates" . | MECHANICS OF TIME-DEPENDENT MATERIALS 22 . 3 (2018) : 291-314 .
APA Wang, Zhejun , Qiang, Hongfu , Wang, Tiejun , Wang, Guang , Hou, Xiao . A thermovisco-hyperelastic constitutive model of HTPB propellant with damage at intermediate strain rates . | MECHANICS OF TIME-DEPENDENT MATERIALS , 2018 , 22 (3) , 291-314 .
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Super tough magnetic hydrogels for remotely triggered shape morphing EI SCIE Scopus
期刊论文 | 2018 , 6 (18) , 2713-2722 | JOURNAL OF MATERIALS CHEMISTRY B
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Despite their potential in various fields such as soft robots, drug delivery and biomedical engineering, magnetic hydrogels have always been limited by their poor mechanical properties. Here a universal soaking strategy has been presented to synthesize tough magnetic nanocomposite (NC) hydrogels. We can simultaneously solve two common issues for magnetic hydrogels: the poor mechanical properties and poor distribution of magnetic particles. The toughness of the magnetic NC hydrogel achieves approximately 11 000 J m(-2). The outstanding properties of tough magnetic hydrogels will enable myriad applications. Here we demonstrate a new application for remotely triggered shape morphing. Heterogeneous structures based on magnetic hydrogels are shown to evolve into bio-inspired three-dimensional (3D) shapes (lotus flowers) from 2D-structured sheets. The self-folding of the structure is controlled by the magnetothermal effect in an alternating magnetic field. The capability to control the shape morphing of a multi-material system by a magnetic field may emerge as a new general strategy for programming complex soft structures.

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GB/T 7714 Tang, Jingda , Tong, Zongfei , Xia, Yukun et al. Super tough magnetic hydrogels for remotely triggered shape morphing [J]. | JOURNAL OF MATERIALS CHEMISTRY B , 2018 , 6 (18) : 2713-2722 .
MLA Tang, Jingda et al. "Super tough magnetic hydrogels for remotely triggered shape morphing" . | JOURNAL OF MATERIALS CHEMISTRY B 6 . 18 (2018) : 2713-2722 .
APA Tang, Jingda , Tong, Zongfei , Xia, Yukun , Liu, Ming , Lv, Zengyao , Gao, Yang et al. Super tough magnetic hydrogels for remotely triggered shape morphing . | JOURNAL OF MATERIALS CHEMISTRY B , 2018 , 6 (18) , 2713-2722 .
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