JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 54
wind energy
a 1.50 safety factor. n
More information: xxxxx.xxx References 1. Small Wind Systems - UK Market Report. 2011, RenewableUK (BWEA): London. 2. G. Mougin, M. Magnani, N. Eikelenberg. Int J Mater Prod Tec, 2009. 36: p. 176-188. 3. A. Bledzki, O. Faruk, V.E. Sperber. Macromol Mater Eng, 2006. 291: p. 449-457. 4. C. Scarponi, in JEC Magazine #46. 2009. 5. D. Shah, P.J. Schubel, P. Licence, M.J. Clifford. J Mater Sci, 2012. 47: p. 2700-2711. 6. P. Wambua, J. Ivens, I. Verpoest. Comp Sci Tech, 2003. 63: p. 1259-1264. 7. Available from: http://www.cnbm.com. cn/EN/c_000000160001/d_14806.html. 8. J. Gassan. Comp Part A - Appl Sci Man, 2002. 33: p. 369-374. 9. T. Yuanjian, D.H. Isaac. Comp Sci Tech, 2007. 67: p. 3300-3307. 10. A. Towo, M.P. Ansell. Comp Sci Tech, 2008. 68: p. 915-924. 11. S. Liang, P.B. Gning, L. Guillaumat. Comp Sci Tech, 2012. 72(5): p. 535-543. 12. BS EN 61400-2:2006. Wind turbines - Part 2: Design requirements for small wind turbines. 13. J. Mandell, R.M. Reed, D.D. Samborsky. SAND92-7005, 1992, Sandia National Laboratories.
Fig. 6: Constant-life diagram for unidirectional hemp/polyester composites
data at further stress ratios. Nonetheless, this diagram can now be used to facilitate component fatigue life prediction. The fatigue life of the study blade can now be determined. For a 20-year design life at a design rotor speed of 170 rpm, the blade needs to sustain the previously derived fatigue loads (inclusive of a 1.25 safety factor) for 1.8x109 cycles. Under the current stress regime (Table 1), the blade will survive the loads for ~1011 cycles (Fig. 6). In fact, a higher safety factor of 1.50 can be used for the required life-span of 20
years (Fig. 6).
Conclusions
The fatigue performance of unidirectional hemp/polyester has been captured through S-N diagrams. Constant-life diagrams have also been constructed; this will enable component fatigue life assessment. As part of the study, design fatigue loads on a 3.5-metre PFC blade have been determined. In predicting the fatigue life, it is confirmed that the PFC blade satisfies the 20-year design life criteria, inclusive of
54 jec composites magazine / No73 June 2012
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JEC COMPOSITES MAGAZINE - Issue #73 - June 2012
Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #73 - June 2012
Cover
Edito
Point of view: core material
Contents
Agenda of Events
COMPANY & BUSINESS
- In Brief
- Reinforcement
- Book launch
APPLICATIONS
- Railway
- UAV
- Electric vehicule
MARKET
- Human ressources
- Sandwich
SPECIAL JEC ASIA 2012
- Floor plan
- Conferences
- JEC Asia Innovation Awards Programme
- Innovation report
- Country guest of honour: Malaysia
- Reinforcement
- Wind energy
RESEARCH & DEVELOPMENT
- Design
- Automation
TECHNOLOGY & INNOVATIONS
- Reinforcement
- UPR
- Mirco-pultrusion
- Pultrusion
- Injection
- Certification
Index
In the world
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Cover
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 2
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Edito
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Point of view: core material
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 5
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Contents
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 7
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Agenda of Events
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - In Brief
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 11
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Book launch
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 13
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Railway
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 15
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - UAV
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Electric vehicule
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 18
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Human ressources
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Sandwich
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 21
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 22
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 23
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Floor plan
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 25
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Conferences
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 27
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 28
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 29
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - JEC Asia Innovation Awards Programme
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 31
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 32
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 33
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Innovation report
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 35
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 36
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 37
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 38
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Country guest of honour: Malaysia
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 40
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 41
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 42
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 43
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 44
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 45
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 46
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 47
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 49
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 50
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Wind energy
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 52
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 53
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 54
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Design
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 56
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 57
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 58
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Automation
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 60
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 61
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 62
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 63
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 64
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 65
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Reinforcement
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 67
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - UPR
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 69
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 70
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Mirco-pultrusion
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 72
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 73
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Pultrusion
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 75
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Injection
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - - Certification
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 78
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 79
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 80
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - Index
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - In the world
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 83
JEC COMPOSITES MAGAZINE - Issue #73 - June 2012 - 84
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