Results 1 to 10 of about 35,645 (304)
Microstructure and densification of 3D weaving preform
Cailiao gongcheng, 2021 The carbon fiber preform is the skeleton of the carbon/carbon material. During the densification process,the pores of the preform is filled by the matrix carbon to form a carbon/carbon composite material.
HUANG Cheng-jie +4 more
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Numerical simulation for expansion of preform and optimization of preform in thermoset composites
Advances in Mechanical Engineering, 2021 The expansion of preform and the optimization of preform have become important steps in the molding process. At present, there are some questions in the expansion of thermoset composite material preform and precompression, for example, the inaccurate ...
Jiatong Hou +3 more
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Applied Sciences, 2020 In the liquid composite molding process, a binder is used to fix the preform. In this study, the influence of a non-reactive epoxy binder was investigated. To allow the measurement of permeability, the preform specimen was produced under three preforming
Hyeong Min Yoo +3 more
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Materials Research Express, 2021 The WC preform was prepared by vacuum sintering, and a WC/Fe composite was obtained by an infiltration casting process with different preform structures.
Zulai Li +5 more
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A New Approach to Measuring Local Properties of Preforms Enhanced for Formability
Frontiers in Materials, 2022 Forming of dry engineering textiles is a quality-critical operation in composites manufacturing. There are various different defect mitigation strategies that have been developed to ensure that material will not wrinkle or fold when depositing and ...
Mark A. Turk +5 more
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Exploring Filling Law of Small Fillet of Dual Clutch Hub [PDF]
Xibei Gongye Daxue Xuebao, 2018 In extruding the dual clutch hub with small fillet gear, the filling of small fillet gear is not complete due to the large forming resistance. A method of preforming the blank into a concave shape is proposed.
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Advanced Laminated Object Manufacturing (LOM) of SiSiC Ceramics [PDF]
, 2004 Carbon sheets were used as a starting material for fabrication of SiSiC composites by advanced LOM. This approach consists of three steps: First a preform was fabricated form phenolic resin coated carbon paper with a LOM-device.
Greil, P., Travitzky, N., Weisensel, L.
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AUTEX Research Journal, 2020 Fiber injection molding is an innovative approach for the manufacturing of nonwoven preforms but products currently lack a homogeneous fiber distribution.
Moll Patrick +3 more
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Chinese Journal of Mechanical Engineering, 2022 To improve the quality and efficiency of Z-directional 3D preform forming, the Z-yarn frictional force distribution model of the preform and its wear mechanism were investigated. In this study, a tensile force measuring device was designed to measure the
Zitong Guo +3 more
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Surface Defect Detection of Preform Based on Improved YOLOv5
Applied Sciences, 2023 This paper proposes a lightweight detection model based on machine vision, YOLOv5-GC, to improve the efficiency and accuracy of detecting and classifying surface defects in preforming materials. During this process, clear images of the entire surface are
Jiatong Hou +4 more
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