Applied Composite Materials最新文献_第5页

Forming of Hybrid (CF UD Prepreg - Advanced SMC) Composite Layups 混合（CF UD预浸料-先进SMC）复合材料铺层的成形

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-02-24 DOI: 10.1007/s10443-025-10314-8

Abhik Dutta, Maxime Thibault, Malin Åkermo

{"title":"Forming of Hybrid (CF UD Prepreg - Advanced SMC) Composite Layups","authors":"Abhik Dutta, Maxime Thibault, Malin Åkermo","doi":"10.1007/s10443-025-10314-8","DOIUrl":"10.1007/s10443-025-10314-8","url":null,"abstract":"<div><p>Combining continuous unidirectional (UD) prepreg and advanced discontinuous long fiber-based sheet moulding compound (ASMC) in a hybrid component is advantageous for applications where cost and environmental impact of the manufactured part are of significance. Previous works have focused on the flow/compaction of ASMC and its interaction with continuous fibres at high pressures. However, little is known about the forming behaviour of such layups. This work investigates the formability of hybrid carbon fibre UD-ASMC composite layups. The deformation mechanisms during forming and their interactions are investigated experimentally. Forming simulations are conducted alongside experimental tests under varying layup configurations. The results show that the hybrid layup combinations investigated exhibited poor forming characteristics. This was due to the high interply friction properties of the UD-ASMC interface, which, in turn, restricted the intraply shear of the hybrid stack. A strong correlation between the numerically predicted forming outcomes and experimentally formed parts demonstrates that generic FE-solvers can provide a first estimate of the forming outcome when coupled with a good understanding of the underlying deformation mechanisms. However, these methods are computationally expensive and are better suited for detailed evaluations rather than for use in design applications.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"1073 - 1108"},"PeriodicalIF":2.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10443-025-10314-8.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125626","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Thermal Characterization of Polyester Resin Composites Loaded with Graphite Rod-like Inclusions Using Front-Face Laser-Flash Thermography 石墨棒状内含物聚酯树脂复合材料的前面激光闪蒸热成像研究

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-02-24 DOI: 10.1007/s10443-025-10313-9

J. A. Aguilar-Jimenez, N. W. Pech-May, I. Y. Forero-Sandoval, J. J. Alvarado-Gil, F. Cervantes-Alvarez

{"title":"Thermal Characterization of Polyester Resin Composites Loaded with Graphite Rod-like Inclusions Using Front-Face Laser-Flash Thermography","authors":"J. A. Aguilar-Jimenez, N. W. Pech-May, I. Y. Forero-Sandoval, J. J. Alvarado-Gil, F. Cervantes-Alvarez","doi":"10.1007/s10443-025-10313-9","DOIUrl":"10.1007/s10443-025-10313-9","url":null,"abstract":"<div><p>One of the most challenging aspects in the manufacture of composite materials is understanding how the geometry and distribution of the inclusions influence their thermal and mechanical properties. In this study, we report the longitudinal thermal properties of vertically aligned graphite rods embedded in a polymer matrix with various geometric arrangements: circular, polygonal, and rectangular. The thermal diffusivity was measured using the front-face laser-flash thermography technique, which provided images of the heating-cooling process from the sample surface. As a first insight, we analyze thermal transport by following the evolution of the thermograms of all the samples’ surfaces and applying a conventional approach. Additionally, we analyze the thermograms in specific regions based on the rods’ distribution geometry to determine the effective thermal properties in each area, which can be directly linked to the graphite rod content. This approach demonstrates how the distribution of the rods significantly influences the heat transport properties. To deepen our understanding, we propose a modified Nan’s model by considering a variation in the geometrical shape factor. Our findings contribute to the development of composites with adjustable thermal properties and offer practical insights for designing systems for thermal management, highlighting the direct applicability of this research.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"937 - 954"},"PeriodicalIF":2.3,"publicationDate":"2025-02-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125627","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Moisture Diffusion, Compression and Degradation Mechanisms of Alfa Natural Fibers (Stipa tenacissima L.) Reinforced Epoxy: Experimental, Morphological and Numerical Analysis Alfa天然纤维（Stipa tenacissima L.）的水分扩散、压缩及降解机理增强环氧树脂：实验、形态和数值分析

IF 2.9 4区材料科学

Applied Composite Materials Pub Date : 2025-02-17 DOI: 10.1007/s10443-025-10311-x

Rawdha Kessentini, Sofiene Helaili, Olga Klinkova

{"title":"Moisture Diffusion, Compression and Degradation Mechanisms of Alfa Natural Fibers (Stipa tenacissima L.) Reinforced Epoxy: Experimental, Morphological and Numerical Analysis","authors":"Rawdha Kessentini, Sofiene Helaili, Olga Klinkova","doi":"10.1007/s10443-025-10311-x","DOIUrl":"10.1007/s10443-025-10311-x","url":null,"abstract":"<div><p>The hygroscopic behavior of natural fibers plays a crucial role in determining the lifetime of biocomposites exposed to humid environments. This study investigates the hygroscopic stresses in Alfa fiber/epoxy composites under various relative humidity (RH) conditions (60%, 83%, 95%) and during immersion. A coupled hygro-mechanical model of multi-physical behavior, integrating both moisture diffusion and bidirectional mechanical responses, provides a detailed prediction of the stress evolution during water sorption, incorporating the experimentally determined hygroscopic swelling of Alfa fibers. Results show that the Alfa/epoxy composite exhibits hydrophilic behavior at RH levels above 60%, with significant anisotropic swelling during water immersion. In particular, out-of-plane expansion is much higher than longitudinal or transverse expansion. Moisture content increases considerably for fiber volume fractions from 0 to 13%, with less pronounced changes above 13%. The differential hygroscopic expansion between the composite and matrix generates compressive stresses, leading to interfacial debonding. The coupled hygro-mechanical loading results in both tensile and compressive stresses in the longitudinal and transverse directions, contributing to potential material damage. These observations are confirmed by scanning electron microscopy (SEM) analysis.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 5","pages":"1907 - 1928"},"PeriodicalIF":2.9,"publicationDate":"2025-02-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145184116","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

An Improved Method for Predicting Stress-Oxidation Deformation and Lifetime of SiC/SiC Composite and Experimental Verification SiC/SiC复合材料应力-氧化变形及寿命预测的改进方法及实验验证

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-02-15 DOI: 10.1007/s10443-025-10312-w

Xiao Han, Xihui Chen, Shen Zhang, Zhigang Sun, Xuming Niu, Xiguang Gao, Yingdong Song

{"title":"An Improved Method for Predicting Stress-Oxidation Deformation and Lifetime of SiC/SiC Composite and Experimental Verification","authors":"Xiao Han, Xihui Chen, Shen Zhang, Zhigang Sun, Xuming Niu, Xiguang Gao, Yingdong Song","doi":"10.1007/s10443-025-10312-w","DOIUrl":"10.1007/s10443-025-10312-w","url":null,"abstract":"<div><p>The stress-oxidation behavior of SiC/SiC mini-composites was investigated in this paper. The deformation and lifetime of composites under varying temperatures and loads were measured using a self-constructed stress-oxidation experimental system. The functional relationship between the average matrix crack spacing and stress, matrix crack width, and interface consumption length was established, and the stress-oxidation kinetics model with matrix cracks was revised. Based on this, a creep-oxidation lifetime model was developed, considering the impacts of high temperature and oxidation on stress distribution and component strength degradation. The total strain and failure time of composites were predicted and compared with experimental results, with the simulation error for failure strain within 9% and the error for lifetime prediction within 28%. The proposed improved model considers the evolution of matrix cracks during the stress-oxidation process and their influence on the deformation and lifetime of the composites.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"995 - 1023"},"PeriodicalIF":2.3,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125505","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Induction Heating of CFRP Based on Macro-Microscopic Combination of Dynamic Superposition Magnetic Fields 基于动态叠加磁场宏微观组合的CFRP感应加热

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-02-03 DOI: 10.1007/s10443-025-10310-y

Tianyu Fu, Qinghua Song, Xinmin Shi, Delong Jiang

引用次数: 0

Thermal Degradation and Decomposition of FR4 Laminate PCB Substrates Joined by Friction Riveting 摩擦铆接的FR4层压板基板的热降解和分解

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-01-25 DOI: 10.1007/s10443-025-10308-6

Camila F. Rodrigues, Lucian Blaga, Benjamin Klusemann

{"title":"Thermal Degradation and Decomposition of FR4 Laminate PCB Substrates Joined by Friction Riveting","authors":"Camila F. Rodrigues, Lucian Blaga, Benjamin Klusemann","doi":"10.1007/s10443-025-10308-6","DOIUrl":"10.1007/s10443-025-10308-6","url":null,"abstract":"<div><p>This study investigates the thermal degradation and chemical transformations of friction-riveted glass fiber-reinforced epoxy laminate (FR4) printed circuit boards (PCBs) with different copper configurations. The primary objective is to identify the critical degradation temperatures and the impact of copper layers on joint integrity and thermal stability. Cross-sectional analyses revealed that joints produced at 250 °C exhibited minimal rivet deformation, while those at 360 °C showed significant deformation and increased epoxy degradation. Thermal analyses, including Differential Scanning Calorimetry (DSC) and Thermogravimetric Analysis (TGA), identified critical degradation temperatures at 327 °C for FR4-I Cu with a single copper layer and 329 °C for FR4-II Cu with double copper layers. The presence of the additional copper layer in FR4-II Cu significantly improved thermal stability, with total mass loss reduced from 29.8% (FR4-I Cu) to 23.5% (FR4-II Cu) at a heating rate of 20 °C/min. The loss of flame-retardant components at elevated temperatures raises concerns for the fire safety of PCBs in electronic devices. These findings highlight the importance of selecting appropriate FR4 configurations for applications exposed to high temperatures, enhancing reliability and safety in the electronics industry.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"879 - 893"},"PeriodicalIF":2.3,"publicationDate":"2025-01-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10443-025-10308-6.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tensile-Compressive Asymmetric Mechanical Properties and Constitutive Model of HTPB Propellant HTPB推进剂拉压不对称力学性能及本构模型

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-01-24 DOI: 10.1007/s10443-025-10305-9

Pai Peng, Zijian Fan, Peng Yu, Zhibin Shen

{"title":"Tensile-Compressive Asymmetric Mechanical Properties and Constitutive Model of HTPB Propellant","authors":"Pai Peng, Zijian Fan, Peng Yu, Zhibin Shen","doi":"10.1007/s10443-025-10305-9","DOIUrl":"10.1007/s10443-025-10305-9","url":null,"abstract":"<div><p>The solid propellant is a particle-reinforced material with significant tension-compression asymmetry. Based on the constant-speed tensile test, constant-speed compression test, and cross-sectional SEM scanning test, this study investigated the differences in the mechanical properties of the HTPB propellant under tensile and compressive loading and the underlying mechanisms. The results show that the tensile strength of HTPB propellant is much smaller than compressive strength. According to the SEM test results of the failure surface, the tensile mechanical properties of the propellant are mainly affected by matrix, and the influence of particles on the mechanical properties is more obvious during the compression process. According to test data, a tension-compression integrated nonlinear constitutive model was constructed, and its application in simulation calculation was realized. The results show that the theoretical, simulation calculation and test results are in good agreement. At 15% strain, the maximum error between the theoretical results and the experimental curve is 9.1% and 4.8% respectively in the process of tension and compression. Therefore, the model can accurately describe the stress-strain relationship of HTPB propellant under different strain rates of tensile and compression. This model can provide theoretical support for accurately evaluating the structural integrity of SRMs.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"1183 - 1196"},"PeriodicalIF":2.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125629","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigation on the Reliability of a Thermal Protection System Based on Mullite Fiber Insulation Tiles Coated with MoSi2-borosilicate Glass in an Aerothermal-Vibration Coupling Environment mosi2 -硼硅玻璃涂层莫来石纤维保温瓦热防护系统在气热-振动耦合环境下的可靠性研究

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-01-24 DOI: 10.1007/s10443-025-10307-7

Dalong He, Fangkun Jiao, Rongguo Zhang

{"title":"Investigation on the Reliability of a Thermal Protection System Based on Mullite Fiber Insulation Tiles Coated with MoSi2-borosilicate Glass in an Aerothermal-Vibration Coupling Environment","authors":"Dalong He, Fangkun Jiao, Rongguo Zhang","doi":"10.1007/s10443-025-10307-7","DOIUrl":"10.1007/s10443-025-10307-7","url":null,"abstract":"<div><p>MoSi<sub>2</sub>-borosilicate glass coatings with high emissivity were prepared on mullite fiber insulation tiles via a slurry technique to enhance surficial thermal radiation and serve in the thermal protection systems (TPS) for spacecraft vehicles. The ablation behaviors and structural reliability of the TPS were investigated using a novel aerothermal-vibration coupling test system. During the test, the heat flux ranged from 75 kW/m<sup>2</sup> to 213 kW/m<sup>2</sup>, accompanied by random vibration with frequency range of 20–2000 Hz and root mean square of total acceleration (Grms) of 15.2 g. Results showed that surface temperatures of the TPS ranged from 601.2 °C to 1043.6 °C, while the maximum back-face temperature only reached 68.7 °C during testing. In addition to demonstrating superior thermal insulation performance, the designed TPS also exhibits exceptional structural reliability. Specifically, following the aerothermal-vibration coupling environmental assessment, the coating structure remains intact and the insulating tiles remain securely attached to the aluminum alloy substrate. This study provides a solution for obtaining excellent thermal insulation performance TPS with high structural reliability, which is urgently needed for spacecraft vehicles.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"955 - 970"},"PeriodicalIF":2.3,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125628","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Study on Roll Forming Process of Carbon Fiber Composite L-shaped Stringer 碳纤维复合材料l型弦的辊压成形工艺研究

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-01-23 DOI: 10.1007/s10443-025-10306-8

Hongxiao Wang, Yi Zhang, Wen Xiao, Xiaohui Zhang, Yanghang Wu, Dengjie Zhu

{"title":"Study on Roll Forming Process of Carbon Fiber Composite L-shaped Stringer","authors":"Hongxiao Wang, Yi Zhang, Wen Xiao, Xiaohui Zhang, Yanghang Wu, Dengjie Zhu","doi":"10.1007/s10443-025-10306-8","DOIUrl":"10.1007/s10443-025-10306-8","url":null,"abstract":"<div><p>Carbon fiber-reinforced polymer (CFRP-T800/epoxy) stringers, particularly L-shaped, are widely used components in aircraft, necessitating efficient manufacturing solutions. This study addresses the fabrication challenges of L-shaped carbon fiber reinforced polymer stringers by automatic tape laying process and layer-by-layer roll forming, which is subsequently validated. The process begins with the creation of a CFRP pre-form flat blank via automatic tape laying process. A roll forming experimental platform is then set up, and a Box-Behnken design experiment is conducted to evaluate the effects of various process parameters including pre-form flat blank temperature, roll forming speed, roll forming pressure, and tension on the product quality. The roll forming of the resin-based CFRP thermoset L-shaped stringers produces components with measured outcomes of porosity, surface quality, and thickness uniformity. The experimental analysis demonstrates how these process parameters including pre-form flat blank temperature, roll forming speed, roll forming pressure, and tension influence porosity, thickness consistency, and bulging rate. Results show an optimal porosity of 0.0096%, a thickness standard deviation of 0.0212 mm, and excellent surface quality; and the order of influence weights of process parameters on rolled quality is: pre-form flat blank temperature, roll forming speed, roll forming pressure, tension; optimal conditions determined include a blank temperature of 55–60 °C, a rolling speed of 10.8 mm/s, a rolling pressure of 0.2 MPa, and a tension of 15 N.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"1109 - 1134"},"PeriodicalIF":2.3,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compression Load Carrying Capacity of 3D Integrated Pyramidal Knitted Composites: Experimental and Numerical Approaches 三维一体化锥体编织复合材料的压缩承载能力：实验与数值方法

IF 2.3 4区材料科学

Applied Composite Materials Pub Date : 2025-01-17 DOI: 10.1007/s10443-024-10304-2

Elahe Omrani, Hossein Hasani, Sayed Houssain Dibajian

{"title":"Compression Load Carrying Capacity of 3D Integrated Pyramidal Knitted Composites: Experimental and Numerical Approaches","authors":"Elahe Omrani, Hossein Hasani, Sayed Houssain Dibajian","doi":"10.1007/s10443-024-10304-2","DOIUrl":"10.1007/s10443-024-10304-2","url":null,"abstract":"<div><p>This study aims to investigate the compression behavior of newly designed 3D weft-knitted pyramidal composites. These structures consist of upper and lower surface layers interconnected by two truncated incomplete pyramids, formulated in three varied core geometries. The 3D integrated knitted samples were manufactured on an electronic flat knitting machine using E-glass yarns and were impregnated with epoxy resin using a resin transfer molding technique. A novel ABAQUS plugin has been developed to gain insight into the deformation and failure mechanisms, facilitating the prediction and enhancement of Hashin’s benchmark data. The compressive performance of the designed structures was compared with the integrated corrugated sandwich structures containing three triangular, trapezoidal, and rectangular cross-sections. The results extracted from the experiments suggest that the structural height exerts a considerable influence on the mechanical characteristics of the 3D composite structures. Consequently, the compressive strength of the specimens exhibits a notable decline as the thickness increases. Also, the geometric configuration of the interconnected layers within the reinforcement structure is pivotal in establishing the compressive attributes of these 3D knitted reinforced composites. The developed 3D knitted composites demonstrated compressive behavior similar to honeycomb sandwich panels and showed better performance than integrated corrugated sandwich panels. The enhancements observed include a 50% increase in the fiber volume fraction, a 28.66% augmentation in the maximum compressive force, a 57.90% rise in absorbed specific energy, and an 86.55% improvement in strength compared to integrated corrugated sandwich panels. Ultimately, the comparative analysis of numerical and experimental force-displacement curves elucidated that the plugin proficiently predicts the behavior of these composites with a considerable degree of accuracy.</p></div>","PeriodicalId":468,"journal":{"name":"Applied Composite Materials","volume":"32 3","pages":"1153 - 1181"},"PeriodicalIF":2.3,"publicationDate":"2025-01-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144125606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0