JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 41

FEATURE “Wind energy” Materials Materials technology for the wind energy market As the wind market matures, there is increasing focus on the cost of quality for blade manufacturing, and more attention is being paid to the efficiency of blade construction and asset/mould utilization. This market need has driven the development of new advanced materials that address these key issues. less desirable as they can add significant time to the shell manufacturing process. DAMIAN BANNISTER, DIRECTOR OF INNOVATION, PRODUCTS AND SOLUTIONS, GURIT T he manufacturing process of a wind turbine blade involves four key components: the root section; the structural spar or spar cap; the aerodynamic fairing or shell; and the surfacing solution. Each component has a distinct set of technology requirements and a wide variety of engineering and material solutions. The incorporation of these four elements into a finished blade also varies considerably from one blade manufacturer to another. However, all blade manufacturers have the common goal to increase quality and productivity, whilst simultaneously engineering the blades to reduce their cost. This article briefly outlines the composite processes used to manufacture these components, and highlights new material developments at Gurit that address these market requirements using advanced materials technology (Figure 1). The painting solution has the advantage of separating the surfacing process from the shell manufacturing, which reduces the technical complexity of the operation. The painting process is also a wellestablished technology that enables the manufacturer to draw on a larger pool of resources and expertise. However, the painting process still requires some form of in-mould primer to provide a suitable base for the painting operation. The primer provides a sandable surface which serves as a mechanical key for the paint, while reducing the number of surface defects such as pinholing and sink marks. To overcome these issues, Gurit has developed a number of products to provide a primer surface as an integrated component of the shell reinforcing material. This has the advantage of eliminating the priming step by using a wet system that has an associated application and tack-off time. For blades manufactured using prepreg and/or SPRINT™ materials, this product is known as SPRINT™IPT and is discussed in more detail below. Shells Shells typically contain triaxial glass and core materials with localized biaxial and UD reinforcements. They can be broadly categorized into two types according to their engineering design: the shell is either structural or non-structural. Structural shells include two UD spar caps running from the root to the tip of each half shell, which are later connected by bonded and over-laminated shear webs. Non-structural shells are reinforced by a structural spar component that has been assembled in a parallel production operation. This spar structure is normally completed with caps, shear webs and a root section. It is then bonded into the lightweight shell structure in the final blade assembly. In addition to this categorization, the type of shell component can then be further defined by the two common material processing routes: infusion or prepreg. Fig.1: Blade Schematic Surfacing The surfacing of a wind blade typically consists of an in-mould gelcoat, or an in-mould primer followed by a subsequent painting operation. In-mould gelcoats have no post-production treatment and therefore must provide full environmental stability and durability. These coatings have been used extensively on smaller blades (<30m), but as blades have become larger mould time has become more critical, and as a consequence in-mould gelcoats have become Infused shells The first stage of this process is the application of an in-mould primer or gelcoat into the mould. The coat provides either the final No40 May 2008 / JEC Composites Magazine

Table of Contents for the Digital Edition of JEC COMPOSITES MAGAZINE - Issue #40 - May 2008

Cover
Edito
NEWS WORLDWIDE | Companies
Nippon Graphite Fiber increases production capacity
World’s largest ECR glass fibre plant
CPIC and Abahsain set up glass fibre joint venture
Airbus negotiations called off in Germany
A400M static testing
Agenda of events
Equipment: non destructive control
BUSINESS
Market survey: India
Trends | Two major sustainable development challenges: raw materials and energy
Niche market | Taking up the rapid manufacturing challenge
Human capital |Choosing the right opportunity
FEATURE | Wind energy : Market update
History : Not just another windmill story
Process : An experimental vertical-axis wind turbine system
Composite manufacturing process for wind energy
Materials technology for the wind energy market
Equipment : The perfect mixture
USERS’ PLATFORM
Composites in the world : Bamboo helmet
Very exclusive business cards
World’s First Integrated Wind Turbines
Solar energy and hydrogen powered plane
Successful partners : Art nesting in a composite bower
Applications : A Hybrid composite carbody for korean tilting train
KNOW-HOW : Environment
Coupling agent : Composite stone
Process
Bonding : INDAR
Special Asia
News
Application
Products from exhibitors
Participating companies
Singapore today
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Cover
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 2
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Edito
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 4
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 5
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 6
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 7
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - CPIC and Abahsain set up glass fibre joint venture
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - A400M static testing
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Agenda of events
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 11
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Equipment: non destructive control
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - BUSINESS
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Market survey: India
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 15
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 16
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 17
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Trends | Two major sustainable development challenges: raw materials and energy
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 19
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 20
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 21
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Niche market | Taking up the rapid manufacturing challenge
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 23
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Human capital |Choosing the right opportunity
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 25
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - FEATURE | Wind energy : Market update
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 27
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 28
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - History : Not just another windmill story
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 30
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Process : An experimental vertical-axis wind turbine system
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 32
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 33
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 34
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 35
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 36
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 37
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Composite manufacturing process for wind energy
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 39
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 40
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Materials technology for the wind energy market
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 42
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 43
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Equipment : The perfect mixture
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 45
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 46
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - USERS’ PLATFORM
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Very exclusive business cards
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Solar energy and hydrogen powered plane
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Successful partners : Art nesting in a composite bower
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 51
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Applications : A Hybrid composite carbody for korean tilting train
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 53
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 54
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - KNOW-HOW : Environment
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 56
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 57
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 58
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 59
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Coupling agent : Composite stone
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 61
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Process
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 63
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 64
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Bonding : INDAR
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 66
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 67
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - 68
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Special Asia
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - News
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - III
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Application
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Products from exhibitors
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Participating companies
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - VII
JEC COMPOSITES MAGAZINE - Issue #40 - May 2008 - Singapore today
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
http://www.nxtbook.com/newpress/jeccomposites/jcm1503_95
http://www.nxtbook.com/newpress/jeccomposites/jcm1501_94
http://www.nxtbook.com/newpress/jeccomposites/jcm1412_93
http://www.nxtbook.com/newpress/jeccomposites/jcm1410_92
http://www.nxtbook.com/newpress/jeccomposites/jcm1409_91
http://www.nxtbook.com/newpress/jeccomposites/jcm1406_90
http://www.nxtbook.com/newpress/jeccomposites/jcm1405_89
http://www.nxtbook.com/newpress/jeccomposites/jcm1404_88
http://www.nxtbook.com/newpress/jeccomposites/jcm1403_87
http://www.nxtbook.com/newpress/jeccomposites/jcm1401_86
http://www.nxtbook.com/newpress/jeccomposites/jcm1311_85
http://www.nxtbook.com/newpress/jeccomposites/jcm1310_84
http://www.nxtbook.com/newpress/jeccomposites/jcm1308_83
http://www.nxtbook.com/newpress/jeccomposites/jcm1307_82
http://www.nxtbook.com/newpress/jeccomposites/jcm1305_81
http://www.nxtbook.com/newpress/jeccomposites/jcm1304_80
http://www.nxtbook.com/newpress/jeccomposites/jcm1303_79
http://www.nxtbook.com/newpress/jeccomposites/jcm1301_78
http://www.nxtbook.com/newpress/jeccomposites/jcm1212_77
http://www.nxtbook.com/newpress/jeccomposites/jcm1210_76
http://www.nxtbook.com/newpress/jeccomposites/jcm1208_75
http://www.nxtbook.com/newpress/jeccomposites/jcm1207_74
http://www.nxtbook.com/newpress/jeccomposites/jcm1206_73
http://www.nxtbook.com/newpress/jeccomposites/jcm1204_72
http://www.nxtbook.com/newpress/jeccomposites/jcm1203_71
http://www.nxtbook.com/newpress/jeccomposites/jcm1201_70
http://www.nxtbook.com/newpress/jeccomposites/jcm1111_69
http://www.nxtbook.com/newpress/jeccomposites/jcm1110_68
http://www.nxtbook.com/newpress/jeccomposites/jcm1108_67
http://www.nxtbook.com/newpress/jeccomposites/jcm1107_66
http://www.nxtbook.com/newpress/jeccomposites/jcm1105_65
http://www.nxtbook.com/newpress/jeccomposites/jcm1104_64
http://www.nxtbook.com/newpress/jeccomposites/jcm1103_63
http://www.nxtbook.com/newpress/jeccomposites/jcm1101_62
http://www.nxtbook.com/newpress/jeccomposites/jcm1011_61
http://www.nxtbook.com/newpress/jeccomposites/jcm1010_60
http://www.nxtbook.com/newpress/jeccomposites/jcm1009_59
http://www.nxtbook.com/newpress/jeccomposites/jcm1006_58
http://www.nxtbook.com/newpress/jeccomposites/jcm1005_57
http://www.nxtbook.com/newpress/jeccomposites/jcm1004_56
http://www.nxtbook.com/newpress/jeccomposites/jcm1003_55
http://www.nxtbook.com/newpress/jeccomposites/jcm1001_54
http://www.nxtbook.com/newpress/jeccomposites/jcm0911_53
http://www.nxtbook.com/newpress/jeccomposites/jcm0910_52
http://www.nxtbook.com/newpress/jeccomposites/jcm0909_51
http://www.nxtbook.com/newpress/jeccomposites/jcm0907-08_50
http://www.nxtbook.com/newpress/jeccomposites/jcm0906_49
http://www.nxtbook.com/newpress/jeccomposites/jcm0904_48
http://www.nxtbook.com/newpress/jeccomposites/jcm0903_47
http://www.nxtbook.com/newpress/jeccomposites/jcm0901_46
http://www.nxtbook.com/newpress/jeccomposites/jcm0811_45
http://www.nxtbook.com/newpress/jeccomposites/jcm0810_44
http://www.nxtbook.com/newpress/jeccomposites/jcm0809_43
http://www.nxtbook.com/newpress/jeccomposites/jcm0807_42
http://www.nxtbook.com/newpress/jeccomposites/jcm0806_41
http://www.nxtbook.com/newpress/jeccomposites/jcm0805_40
http://www.nxtbook.com/newpress/jeccomposites/jcm0803_39
http://www.nxtbook.com/newpress/jeccomposites/jcm0801_38
http://www.nxtbook.com/newpress/jeccomposites/jcm0712_37
http://www.nxtbook.com/newpress/jeccomposites/jcm0710_36
http://www.nxtbook.com/newpress/jeccomposites/jcm0709_35
http://www.nxtbook.com/newpress/jeccomposites/jcm0707_34
http://www.nxtbook.com/newpress/jeccomposites/jcm0706_33
http://www.nxtbookMEDIA.com