3D Fibre Reinforced Polymer Composites Part 4 pdf

... (4. 1) where io}= {Oil O22 O33 O23 O31 Ol2)7 kll ‘22 ‘33 ‘23 ‘31 ‘I2)T ‘1, ‘12 ‘I3 ‘I4 ‘15 ‘16 ‘21 ‘22 ‘23 ‘ 24 ‘25 ‘26 ‘31 ‘32 ‘33 ‘ 34 ‘35 ‘36 41 42 43 44 45 46 ... '23 ' 24 '25 '26 '31 '32 '33 ' 34 '35 '36 &apos ;41 &apos ;42 &apos ;43 &apos ;44 &apos ;45 &apos ;46 '51 '52 '53 &apo...

Ngày tải lên: 10/08/2014, 11:21

... stitching a number of separate components together (see 44 30 Fibre Reinforced Polymer Composites complete preforms containing an optimised fibre pattern. Current machinery would tend to limit ... horn gears for the transfer of the yarn carrier across a flat bed braider. 40 3D Fibre Reinforced Polymer Composites In spite of the restrictions, non-crimp fabric is b...

Ngày tải lên: 10/08/2014, 11:21

... properties 138- 144 - damage 143 , 144 - fatigue 145 - flexure 138- 143 - four-step braiding 25-29 - impact damage resistance 143 , 144 - interlaminar fracture properties 143 , - interlaminar ... toughness, 143 , 144 G GlobaVlocal, 89 H Hand lay-up process 47 Harness, 71 Hooke’s law, 64. 65 I Impact performance, 159 Impact damage resistance - braided comp...

Ngày tải lên: 10/08/2014, 11:21

Ngày tải lên: 10/08/2014, 11:21

... and +45 " yarns (courtesy of CTMI) 10 3D Fibre Reinforced Polymer Composites to Mach 8 (-2600 ds) (Kandero, 2001). The 3D material is a ceramic-based composite consisting of 3D woven ... up 6 30 Fibre Reinforced Polymer Composites 1.2 INTRODUCTION TO 3D FRF' COMPOSITES Since the late-l960s, various types of composite materials with three-dime...

Ngày tải lên: 10/08/2014, 11:21

... yields the following stress-strain relation: {F} = [FiE} where ‘ 34 ‘35 ‘36 41 42 43 44 45 46 (4. 10) (4. 1 1) where i7G and FG are the average stress and average strain ... in equation (4. 9) to a representative volume leads to the following stress-strain relation: where [SI= l”31 SI32 s33 s 34 s35 !36 1 41 s42 43 44 45 sa (4. 12) (4. 13) whe...

Ngày tải lên: 10/08/2014, 11:21

... the fibre and matrix, the fibre volume fraction as well as the fibre direction and equations (4. 6), (4. 39) and (4. 46). Micromechanics Models for Mechanical Properties 93 Figure 4. 14 Schematic ... not investigated. 4. 4 MODELS FOR 3D WOVEN COMPOSITES In this section, we discuss several modelling schemes for typical 3D woven composites as shown in Figure...

Ngày tải lên: 10/08/2014, 11:21

... in 3D orthogonal composites. Figure 5.1 Broken fibres caused by 3D weaving. Figure 5.2 Fragments of broken glass fibres caused by 3D weaving. 116 30 Fibre Reinforced Polymer Composites ... both the 3D 110 100 5 80 x - - n g 60 a a a a, > a ._ c 7 40 0 5 20 0 30 Fibre Reinforced Polymer Composites A Yarn afterTake-Up Stage...

Ngày tải lên: 10/08/2014, 11:21

... Transverse tensile strain 0. 64 0.533 0.71 1 (%) Longitudinal compressive 0.3 24 0. 249 1 .47 4 strain (%) OHT (drilled hole, W/d = 661.02 647 .22 44 5.05 4) gross strength (MPa) OHC ... and 3D woven composites (Data from Billaut and Rousell, 1995). 132 30 Fibre Reinforced Polymer Composites 1 .4 2 1.2 Y, 4 1.0 -0 (d t 0 .c. .E 0.8 - 5...

Ngày tải lên: 10/08/2014, 11:21