JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 86

filament winding
glued interface between boss and liner was calculated in order to foresee potential separation between the surfaces, seeing that the peel strength of the adhesive is 4 MPa. The subsequent illustrations indicate the results of the simulation. In particular, it was found that, in the fillet radius of the threaded boss (1 mm), the Von Mises stress (Figure 6) is somewhat higher than the yield stress of the Fig. 6: Von Mises stress of the threaded material. boss (up), pressure at the interface However, it can be noted between the threaded boss and the liner (down) that the concentration of the stresses is extremely localised in the threaded boss fillet radius (Figure 6). For this reason, and considering that the loads are steady, the contribution of the stress concentration to increasing the local stress level could be ignored, on the condition that the material is sufficiently ductile. In fact, ductile materials present a wide plasticity range and in reality, the stresses reach values equivalent to the material’s yield stress, to the detriment of local plasticising with a redistribution of the same stresses. The pressure behaviour at the boss-liner interface confirms that the adhesive is compressed between the two surfaces (Figure 6). Even the laminate was found to be far from the breaking limit, as the Tsai-Wu parameter does not exceed 0.2 at any point (the laminate fractures when this parameter is equal to 1) (Figure 7).

(the component was developed in collaboration with Technologycom in Brindisi). To encase the nozzle into the booster, a collapsible mandrel was designed and produced (Figure 8) in order to allow fixing the nozzle before starting the winding process. Therefore, the winding surface is a combination of a cylindrical portion and a portion having as a profile the external surface of the nozzle.

86

Booster design

Definition of the winding path The booster is composed of a carbon-fibre cylindrical chamber encasing the converging-diverging shaped nozzle, where the expansion of the combustion gas takes place. The nozzle is produced by autoclave technology, utilizing a carbon fibre prepreg and an appropriate resin resistant to the temperatures reached in this area, found to be in excess of 3000°C

jec composites magazine / No68 October 2011

Fig. 7: Application of the Tsai-Wu failure criterion for loading condition 2

An in-house-developed program was used to define the fibre winding path for the mandrel. The mandrel shape used to obtain the winding is represented in Figure 9. In particular, it can be seen that there are some points where the winding angle α needs to be 90°. Indeed, there are two internal points (A and B in Figure 9) where the profile of the mandrel is concave with sharp edges, and two external points (C and D) where the fibre path needs to come back in order to achieve a continuous winding.

Fig. 9: Shape of the mandrel used for the booster and identification of the geometrical constraints for the fibre path Fig. 10: Definition of the fibre path on the mandrel used for the booster

Fig. 8: CAD model (left) and a picture of the mandrel used to wind the booster (right)

The resulting path is shown in Figure 10, where the requested friction coefficient μ is also represented. Experimental measurements showed that the available friction coefficient is somewhat higher than the maximum requested friction coefficient (0.2), so that the fibre cannot slip during the winding process.



JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011

Cover
Edito
Point of view: Manufacturing in India
Contents
Agenda of Events
COMPANY & BUSINESS
- In Brief
- Carbon - Melbourne establishes its position in the carbon fibre sector
- Pipes - Amiantit Technology, next-level GRP pipe technology
- Marine - Beachcomber, the marine product specialist
APPLICATIONS
- Construction - New architectural hotel facade designed in GRP
- Automotive - New Pilot Super Sport tyre reinforced with para-aramid fibre
- Pipes - Microtunneling jacking pipes for a combined sewage collector in France
MARKET
- Canada - Canadian Advanced Composites R&D centre continues to grow
- Basalt - Continuous basalt fibre (CBF): a natural fibre for composite applications
- Sustainability - Bilan carbon inventory: factor of competitiveness
Special JEC Asia 2011: the place to be!
FEATURE BI-ANGLE NCF
- The amazing bi-angle thin-ply NCF
- C-PLY™, a new structural approach to multiaxials in composites
- Characterization of the equivalent unidirectional thin ply from NCF
- First prepreg of bi-angle NCF and their mechanical properties
- Pultrusion and Resin Film Infusion (RFI) of bi-angle thin-ply NCF
- Representative test data on bi-angle thin-ply NCF
- Processing bi-angle non-crimp fabrics
- Thin-ply NCF: design for deformation through anisotropy
- Performance enhancement by using a bi-angle composite sandwich beam
- Homogenization made easy with biangle thin-ply NCF
- First and last ply failure predictions by homogenized strength parameters
- Equivalent properties for finite element analysis in composite design
- Predicting the OHT strength of NCF composites
- Thin-ply NCF: design for deformation through anisotropy
RESEARCH & DEVELOPMENT
- Thin-ply NCF: design for deformation through anisotropy
- Filament winding - Development of full composite propulsion systems for UAV take-off
TECHNOLOGY & INNOVATIONS
- Aeronautics - Managing EMI grounding & lightning strike protection
- Sustainability - Natural-fibre pultruded composites – a revolutionary new wood substitute
- LFT-PP - New coloured, nonhalogenated flame-retardant LFT-PP products
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Cover
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 2
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Edito
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Point of view: Manufacturing in India
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 5
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Contents
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 7
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Ad1
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Ad2
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 9
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - In Brief
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Carbon - Melbourne establishes its position in the carbon fibre sector
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Pipes - Amiantit Technology, next-level GRP pipe technology
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 13
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Marine - Beachcomber, the marine product specialist
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 15
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Construction - New architectural hotel facade designed in GRP
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 17
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Automotive - New Pilot Super Sport tyre reinforced with para-aramid fibre
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Pipes - Microtunneling jacking pipes for a combined sewage collector in France
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 20
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Canada - Canadian Advanced Composites R&D centre continues to grow
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Basalt - Continuous basalt fibre (CBF): a natural fibre for composite applications
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 23
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 24
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 25
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Sustainability - Bilan carbon inventory: factor of competitiveness
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 27
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 28
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 29
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 30
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 31
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 32
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Special JEC Asia 2011: the place to be!
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 34
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 35
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 36
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JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - BGCover
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - BGAd1
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - BG1
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JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - BG74
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - The amazing bi-angle thin-ply NCF
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 52
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - C-PLY™, a new structural approach to multiaxials in composites
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 54
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Characterization of the equivalent unidirectional thin ply from NCF
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 56
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - First prepreg of bi-angle NCF and their mechanical properties
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 58
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Pultrusion and Resin Film Infusion (RFI) of bi-angle thin-ply NCF
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 60
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Representative test data on bi-angle thin-ply NCF
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 62
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 63
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Processing bi-angle non-crimp fabrics
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 65
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Thin-ply NCF: design for deformation through anisotropy
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 67
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Performance enhancement by using a bi-angle composite sandwich beam
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 69
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Homogenization made easy with biangle thin-ply NCF
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 71
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - First and last ply failure predictions by homogenized strength parameters
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 73
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Equivalent properties for finite element analysis in composite design
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 75
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Predicting the OHT strength of NCF composites
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 77
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Thin-ply NCF: design for deformation through anisotropy
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 79
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 80
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Thin-ply NCF: design for deformation through anisotropy
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 82
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 83
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Filament winding - Development of full composite propulsion systems for UAV take-off
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 85
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 86
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 87
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 88
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Aeronautics - Managing EMI grounding & lightning strike protection
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 90
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 91
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - Sustainability - Natural-fibre pultruded composites – a revolutionary new wood substitute
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - - LFT-PP - New coloured, nonhalogenated flame-retardant LFT-PP products
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 94
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 95
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - Index
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 97
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - In the world
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 99
JEC COMPOSITES MAGAZINE - Issue #68 Special JEC Asia - October 2011 - 100
https://www.nxtbook.fr/newpress/jeccomposites/jcm2109_142
https://www.nxtbook.fr/newpress/jeccomposites/jcm2107_141
https://www.nxtbook.fr/newpress/jeccomposites/jcm2105_140
https://www.nxtbook.fr/newpress/jeccomposites/jcm2103_139
https://www.nxtbook.fr/newpress/jeccomposites/jcm-experts-digest-additive-manufacturing-2020
https://www.nxtbook.fr/newpress/jeccomposites/jcm2101_138
https://www.nxtbook.fr/newpress/jeccomposites/jcm2011_Special_Issue4
https://www.nxtbook.fr/newpress/jeccomposites/jcm2011_137
https://www.nxtbook.fr/newpress/jeccomposites/jcm2009_136
https://www.nxtbook.fr/newpress/jeccomposites/jcm2007_135
https://www.nxtbook.fr/newpress/jeccomposites/jcm_2020_Q1_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_Special_Issue3
https://www.nxtbook.fr/newpress/jeccomposites/jcm2005_134
https://www.nxtbook.fr/newpress/jeccomposites/jcm2003_133
https://www.nxtbook.fr/newpress/jeccomposites/jcm2001_132
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_Special_Issue2
https://www.nxtbook.fr/newpress/jeccomposites/jcm1911_131
https://www.nxtbook.fr/newpress/jeccomposites/jcm1909_130
https://www.nxtbook.fr/newpress/jeccomposites/jcm1907_129
https://www.nxtbook.fr/newpress/jeccomposites/jcm1905_128
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_Special_Issue1
https://www.nxtbook.fr/newpress/jeccomposites/jcm1903_127
https://www.nxtbook.fr/newpress/jeccomposites/jcm1901_126
https://www.nxtbook.fr/newpress/jeccomposites/jcm1811_125
https://www.nxtbook.fr/newpress/jeccomposites/jcm1810_124
https://www.nxtbook.fr/newpress/jeccomposites/jcm1808_123
https://www.nxtbook.fr/newpress/jeccomposites/jcm1807_122
https://www.nxtbook.fr/newpress/jeccomposites/jcm1805_121
https://www.nxtbook.fr/newpress/jeccomposites/jcm1804_120
https://www.nxtbook.fr/newpress/jeccomposites/jcm1803_119
https://www.nxtbook.fr/newpress/jeccomposites/jcm1802_119-Supplement_Innovation_Report
https://www.nxtbook.fr/newpress/jeccomposites/jcm1801_118
https://www.nxtbook.fr/newpress/jeccomposites/jcm1711_117
https://www.nxtbook.fr/newpress/jeccomposites/jcm1710_116
https://www.nxtbook.fr/newpress/jeccomposites/jcm1708_115
https://www.nxtbook.fr/newpress/jeccomposites/jcm1707_114
https://www.nxtbook.fr/newpress/jeccomposites/jcm1706_113
https://www.nxtbook.fr/newpress/jeccomposites/jcm1704_112
https://www.nxtbook.fr/newpress/jeccomposites/jcm1703_111
https://www.nxtbook.fr/newpress/jeccomposites/jcm1701_110
https://www.nxtbook.fr/newpress/jeccomposites/jcm1611_109
https://www.nxtbook.fr/newpress/jeccomposites/jcm1610_108
https://www.nxtbook.fr/newpress/jeccomposites/jcm1608_107
https://www.nxtbook.fr/newpress/jeccomposites/jcm1607_106
https://www.nxtbook.fr/newpress/jeccomposites/jcm1605_105
https://www.nxtbook.fr/newpress/jeccomposites/jcm1604_104
https://www.nxtbook.fr/newpress/jeccomposites/jcm1603_103
https://www.nxtbook.fr/newpress/jeccomposites/jcm1601_102
https://www.nxtbook.fr/newpress/jeccomposites/jcm1511_101
https://www.nxtbook.fr/newpress/jeccomposites/jcm1510_100
https://www.nxtbook.fr/newpress/jeccomposites/jcm1509_99
https://www.nxtbook.fr/newpress/jeccomposites/jcm1507_98
https://www.nxtbook.fr/newpress/jeccomposites/jcm1505_97
https://www.nxtbook.fr/newpress/jeccomposites/jcm1504_96
https://www.nxtbook.com/newpress/jeccomposites/jcm1503_95
https://www.nxtbook.com/newpress/jeccomposites/jcm1501_94
https://www.nxtbook.com/newpress/jeccomposites/jcm1412_93
https://www.nxtbook.com/newpress/jeccomposites/jcm1410_92
https://www.nxtbook.com/newpress/jeccomposites/jcm1409_91
https://www.nxtbook.com/newpress/jeccomposites/jcm1406_90
https://www.nxtbook.com/newpress/jeccomposites/jcm1405_89
https://www.nxtbook.com/newpress/jeccomposites/jcm1404_88
https://www.nxtbook.com/newpress/jeccomposites/jcm1403_87
https://www.nxtbook.com/newpress/jeccomposites/jcm1401_86
https://www.nxtbook.com/newpress/jeccomposites/jcm1311_85
https://www.nxtbook.com/newpress/jeccomposites/jcm1310_84
https://www.nxtbook.com/newpress/jeccomposites/jcm1308_83
https://www.nxtbook.com/newpress/jeccomposites/jcm1307_82
https://www.nxtbook.com/newpress/jeccomposites/jcm1305_81
https://www.nxtbook.com/newpress/jeccomposites/jcm1304_80
https://www.nxtbook.com/newpress/jeccomposites/jcm1303_79
https://www.nxtbook.com/newpress/jeccomposites/jcm1301_78
https://www.nxtbook.com/newpress/jeccomposites/jcm1212_77
https://www.nxtbook.com/newpress/jeccomposites/jcm1210_76
https://www.nxtbook.com/newpress/jeccomposites/jcm1208_75
https://www.nxtbook.com/newpress/jeccomposites/jcm1207_74
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