Uncertainty quantification of mechanical properties for three-dimensional orthogonal woven composites. Part I: Stochastic reinforcement geometry reconstruction

2020 ◽  
Vol 235 ◽  
pp. 111763 ◽  
Author(s):  
Wei Tao ◽  
Ping Zhu ◽  
Can Xu ◽  
Zhao Liu
Keyword(s):  
Mechanical Properties ◽  
Uncertainty Quantification ◽  
Three Dimensional ◽  
Woven Composites ◽  
Geometry Reconstruction

Study on Mechanical Properties of 3D4d Woven SiCf/SiC Composites Based on Experiment and Model Prediction

2019 ◽  
Vol 943 ◽  
pp. 81-86
Author(s):  
Xing Keng Shen ◽  
Ming Yuan Li ◽  
Ying Dai ◽  
Xin Gui Zhou ◽  
Peng Fei He
Keyword(s):  
Mechanical Properties ◽  
Three Dimensional ◽  
Tensile Tests ◽  
Image Correlation ◽  
Woven Composites ◽  
Silicon Carbide Fiber ◽  
Woven Composite ◽  
Section Shape ◽  
Ct Technology ◽  
Sic Composites

The mechanical properties of KD-II type silicon carbide fiber braided three-dimensional four-directional (3D4d) SiCf/SiC woven composites fabricated by PIP method were studied in this paper. The computed tomography (CT) technology was used to observe the cross section shape and orientation of the fiber bundles inside woven composite materials, and digital image correlation (DIC) method was used to measure deformation, during the tensile tests of the composites. Theoretical and numerical methods were adopted to predict mechanical properties of the 3D4d SiCf/SiC woven composites, and effectiveness of different methods was discussed based on the comparison of results obtained from the experiments and prediction model.

scholarly journals Multiscale Analysis of Mechanical Properties of 3D Orthogonal Woven Composites with Randomly Distributed Voids

Materials ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5247
Author(s):  
Yaohua Gong ◽  
Tao Huang ◽  
Xun’an Zhang ◽  
Yongyong Suo ◽  
Purong Jia ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Multiscale Analysis ◽  
Three Dimensional ◽  
Woven Composites ◽  
Manufacturing Processes ◽  
Design Basis ◽  
Void Defects ◽  
3D Woven Composites ◽  
3D Orthogonal Woven

Voids are common defects in 3D woven composites because of the complicated manufacturing processes of the composites. In this study, a micro–meso multiscale analysis was conducted to evaluate the influence of voids on the mechanical properties of three-dimensional orthogonal woven composites. Statistical analysis was implemented to calculate the outputs of models under the different scales. A method is proposed to generate the reasonable mechanical properties of the microscale models considering randomly distributed voids and fiber filaments. The distributions of the generated properties agree well with the calculated results. These properties were utilized as inputs for the mesoscale models, in which void defects were also considered. The effects of these defects were calculated and investigated. The results indicate that tensile and shear strengths were more sensitive to the microscale voids, while the compressive strength was more influenced by mesoscale voids. The results of this study can provide a design basis for evaluating the quality of 3D woven composites with void defects.

Tensile properties of defect-prefabricated 3D woven composites: Experiments and simulations

2021 ◽  
pp. 152808372110395
Author(s):  
Liming Xu ◽  
Deng’an Cai ◽  
Chao Li ◽  
Xingyu Jin ◽  
Guangming Zhou
Keyword(s):  
Mechanical Properties ◽  
Volume Fraction ◽  
Research Work ◽  
Three Dimensional ◽  
Woven Composites ◽  
Structural Components ◽  
Damage Models ◽  
3D Woven Composites ◽  
Near Net Shape ◽  
Von Mises

Three-dimensional (3D) woven composites have been widely used in structural components due to their excellent mechanical and near-net-shape properties. However, for some special applications, it is expected that 3D woven composites can be damaged at designated locations under a specific load. In this research work, a new kind of defect-prefabricated 3D woven composites (DP3DWCs) are designed, where defects are prefabricated by cutting weft or warp yarns in defect-free 3D woven composites (DF3DWCs). The tensile mechanical properties of the DF3DWCs and the DP3DWCs are investigated experimentally and numerically. The mesoscopic geometry models of the DF3DWCs and the DP3DWCs were established by multi-objective searching algorithm. The progressive damage models were established using the 3D Hashin criteria and the von Mises failure criterion. Numerical results agree well with the experimental data. The influence of the number of defect layers on the mechanical properties was also discussed. The obtained results indicate that the defects have little effect on the elastic modulus, while tensile strengths decrease linearly with the increase of the number of defect layers. Failure mechanisms of yarns and matrix in the non-defective and defective materials were studied, and the volume fraction of elements of each failure mode was computed and analysed.

scholarly journals Microstructural Damage Characteristic of a Layer-to-Layer Three-Dimensional Angle-Interlock Woven Composite Under Quasi-Static Tensile Loading

2020 ◽  
Vol 20 (2) ◽  
pp. 121-127
Author(s):  
Qian Ma ◽  
Ke Wang ◽  
Shu-Dong Wang ◽  
Hong-Wu Chen ◽  
Li-Min Jin ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Optimization Design ◽  
Progressive Failure ◽  
Failure Process ◽  
Three Dimensional ◽  
Tensile Load ◽  
Woven Composites ◽  
Significant Feature ◽  
Element Analysis ◽  
Static Tensile

AbstractThree-dimensional angle-interlock woven composites (3DAWCs) are widely used for their excellent mechanical properties. The most significant feature is the existence of the undulated warp yarns along the thickness direction, which makes it interesting to study the mechanical properties in the warp direction. The quasi-static tensile behavior of a layer-to-layer 3DAWC along the undulated warp direction was studied by experimental and finite element analysis (FEA) methods. Based on the experimental results, the typical failure mode involving fibers, resin, and their interfaces was found. According to the FEA results, the stress concentration effect, key structural regions, and microstructural (yarn and resin) damage mechanism were obtained, which provided effective guidance for structural optimization design of the 3DAWC with stronger tensile resistance performance. In addition, the three-step progressive failure process of the 3DAWC under quasi-static tensile load was also described at the “yarn–resin” microstructural level.

Biotemplated facile synthesis of three‐dimensional micro/nanoporous tin oxide: improving the flammable and mechanical properties of flexible PVC

2019 ◽  
Vol 14 (8) ◽  
pp. 828-830 ◽  
Author(s):  
Weihua Meng ◽  
Weihong Wu ◽  
Weiwei Zhang ◽  
Luyao Cheng ◽  
Yunhong Jiao ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Tin Oxide ◽  
Three Dimensional ◽  
Facile Synthesis

scholarly journals Is Dialdehyde Chitosan a Good Substance to Modify Physicochemical Properties of Biopolymeric Materials?

2021 ◽  
Vol 22 (7) ◽  
pp. 3391
Author(s):  
Sylwia Grabska-Zielińska ◽  
Alina Sionkowska ◽  
Ewa Olewnik-Kruszkowska ◽  
Katarzyna Reczyńska ◽  
Elżbieta Pamuła
Keyword(s):  
Mechanical Properties ◽  
Tissue Engineering ◽  
Physicochemical Properties ◽  
Silk Fibroin ◽  
Three Dimensional ◽  
Microscopy Imaging ◽  
Maximum Deformation ◽  
One Step ◽  
Chitosan Blends ◽  
Fourier Transfer Infrared Spectroscopy

The aim of this work was to compare physicochemical properties of three dimensional scaffolds based on silk fibroin, collagen and chitosan blends, cross-linked with dialdehyde starch (DAS) and dialdehyde chitosan (DAC). DAS was commercially available, while DAC was obtained by one-step synthesis. Structure and physicochemical properties of the materials were characterized using Fourier transfer infrared spectroscopy with attenuated total reflectance device (FTIR-ATR), swelling behavior and water content measurements, porosity and density observations, scanning electron microscopy imaging (SEM), mechanical properties evaluation and thermogravimetric analysis. Metabolic activity with AlamarBlue assay and live/dead fluorescence staining were performed to evaluate the cytocompatibility of the obtained materials with MG-63 osteoblast-like cells. The results showed that the properties of the scaffolds based on silk fibroin, collagen and chitosan can be modified by chemical cross-linking with DAS and DAC. It was found that DAS and DAC have different influence on the properties of biopolymeric scaffolds. Materials cross-linked with DAS were characterized by higher swelling ability (~4000% for DAS cross-linked materials; ~2500% for DAC cross-linked materials), they had lower density (Coll/CTS/30SF scaffold cross-linked with DAS: 21.8 ± 2.4 g/cm3; cross-linked with DAC: 14.6 ± 0.7 g/cm3) and lower mechanical properties (maximum deformation for DAC cross-linked scaffolds was about 69%; for DAS cross-linked scaffolds it was in the range of 12.67 ± 1.51% and 19.83 ± 1.30%) in comparison to materials cross-linked with DAC. Additionally, scaffolds cross-linked with DAS exhibited higher biocompatibility than those cross-linked with DAC. However, the obtained results showed that both types of scaffolds can provide the support required in regenerative medicine and tissue engineering. The scaffolds presented in the present work can be potentially used in bone tissue engineering to facilitate healing of small bone defects.

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