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2×2 braided composites. Journal of composite materials, 40(6), 533-546. [11] Wan, Z., Li, J. (2006). Braided angle measurement technique for three-dimensional braided composite material preform using mathematical morphology and image texture. AUTEX Research Journal, 6(1), 30-39. [12] Gong, L., and Wan, Z. (2006). Automatic measurement technology on braided pitch length of three-dimensional braided composite material preform. Computer Measurement & Control (in Chinese), 14(6), 730-733. [13] Wan, Z., Shen, J., and Wang, X. (2004). Measure and research on braided

and resin are listed in Table 2 . Figure 5 The quasi-static tension model of the 3DAWC (3DAWC, three-dimensional angle-interlock woven composite) Table 2 Material parameters of glass fiber and resin Materials E (GPa) Poisson’s ratio Density (g/cm 3 ) Failure stress (MPa) Failure strain (%) Glass fiber 70 0.20 1.44 2,200 2.1 Resin 3.65 0.35 1.36 146 3.2 Interaction property The interaction between the resin and yarns was defined as “surface-to-surface contact” with the “bonding” condition of limit bonding to slave nodes set in yarns. Moreover, the resin surface and

to investigate the impact response and damage of triaxial-braided containment fan case material with a blade-like projectile. From the experimental and numerical results, it was concluded that the main failure modes of carbon/epoxy triaxial-braided composite materials impacted by high-velocity blade-like projectiles are fiber shear fracture, matrix crush in the impacting surface, fiber tensile fracture, matrix cracking, fiber pull-out, and delamination in the exiting surface. The comparative analysis of the high-velocity impact response and damage evolution of the

1 Introduction Resin-based fiber-reinforced composite materials have been widely used in aerospace, transportation, construction engineering, sports equipment, personal protection, and other fields due to their significant advantages, such as lightweight, high strength, diversified structure, and good design ability. Among them, especially the three-dimensional (3-D) textile structural composites (3DTSCs) with outstanding mechanical properties, such as 3-D woven, knitting, and braiding, indicate the better mechanical properties than the traditional two

friction. Yarn stretching force is one of the leading factors, which influences all dynamic frictional features. The friction is also related to bending angle, yarn delivery speed, yarn surface properties, and so on. [ 12 , 13 , 14 , 15 , 16 ]. The literature review indicates that the factors influencing the yarn damages and knittability are complex. This article conducted a comprehensive evaluation of yarn damages before knitting and after being unraveled from plain, and 1 × 1 rib fabric knitted on the computerized flat knitting machine. The mechanical properties of

a wide range [ 2 ]. However, multispeed electronic let-off systems have higher requirements than single-speed electronic let-off systems (e.g., in terms of let-off accuracy, responsiveness, and stability). Especially, in multispeed electronic let-off systems, the switching of let-off amounts should be completed in a short time to ensure the stability of the let-off system; otherwise, problems such as yarn breakage and needle leakage, affecting the cloth's surface, and even the phenomenon of warp smashing, affecting the normal warp knitting, are easy to occur [ 3

Bhattacharya 2016 ). The overall channel gradient changes from 2.70 m/km on the piedmont region to 0.30 m/ km on the northern plain ( Fig. 1 ). The active mountain front and south-eastward-dipping foredeep basin of the Himalaya has given rise to a structure-controlled drainage system in the studied part of North Bengal ( Gansser 1983 ; Goswami et al. 2013 ; Soja and Sarkar 2008 ). The Quaternary surface with a marginal basement of Siwalik molasses is well associated with several NNW–SSW bound and traversing lineaments ( Fig 2 ). An uplifted alluvial surface on the north

). Table 1 Data from the measured subjects. BMI is the body mass index (kg/m 2 ). Subject Height (m) Weight (kg) BMI Shoes’ outsole and type 1 1.90 130 36 Rubber, sports shoes 2 1.80 90 28 Leather dress shoes 3 1.66 65 24 Rubber, boots with 4 cm heel 4 1.50 42 19 Leather, boot with 7 cm heel Subjects were successively connected to the impedance meters by two 4.9 cm 2 brass plates and 12 cm long braided wire to minimize the serial inductance of the connection. A respective ceramic 68 pF capacitor (±10 % tolerance) was soldered to the end of each cable. The actual values

, water/bar area and channel flow surface. Segment slope angle has a crucial role in river-reach typology, and a very close relationship is apparent between channel width and valley width/height ratio, total stream area and channel flow surface. This relationship confirms the influence of overall catchment character on channel formation. Although the calculated correlation coefficients have only small dependence on deposited parameters, a significant negative relationship exists; deposit decreases as sinuosity index increases ( Table 2 ). There is also the relatively

one ( Figure 1(b) ). It is worth adding that the fabric of reinforcement with a twill weave ( Figure 1(c) ) during lamination is better laid on surfaces with a large curvature. The undoubted advantage of laminates reinforced with fabrics is the possibility to design their mechanical properties (strength and stiffness), which for the same fibers of reinforcement and matrix and the same lamination technology, depend on the weave used, the number of reinforcement layers and their mutual orientation. However, the result of the multi-phase microstructure is that under