INVESTIGATION OF THE FATIGUE PROPERTIES OF AERO-GENERATOR STRUCTURAL MATERIALS.

Projektinformationen

ID Finanzhilfevereinbarung: EN3W0042

Startdatum 1 Dezember 1986

Enddatum 30 November 1989

Finanziert unter

• Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988

Gesamtkosten € 0,00

EU-Beitrag Keine Daten

Koordiniert durch

GENT UNIVERSITY
Belgium

Ziel

SET UP OF A COMPREHENSIVE BODY OF KNOWLEDGE ON FATIGUE PROPERTIES OF COMMON MATERIALS FOR WIND TURBINE BLADES.
Fatigue tests on coupon specimens and on full scale components made of glassfibre reinforced polyester have been carried out. This material is widely used in the construction of rotor blades.
THE APPLICATION OF COMPOSITE MATERIALS IN THE CONSTRUCTION OF ROTORBLADES IS VERY COMMON TODAY. IN THE PRESENT WORK THIS MATERIAL WILL BE INVESTIGATED FROM THE POINT OF VIEW OF FATIGUE - AND STIFFNESS PROPERTIES IN THE HIGH CYCLE FATIGUE RANGE. IN THE RUG-PROJECT THE INVESTIGATIONS ARE LIMITED TO GLASS FIBER REINFORCED POLYESTER OF +/- 10 DEGREES C. FIBER ORIENTATION AT THREE DIFFERENT TEMPERATURES : - 20, + 20, AND + 50 DEGREES C. CONSTANT STRESS AMPLITUDE TESTS ARE PERFORMED FOR TWO STRESS RATIOS : R = 0.1 AND R = -1. AT LEAST 16 TESTS ARE CARRIED OUT FOR A GIVEN TEST CONDITION IN ORDER TO GENERATE SETS OF DATA WITH SOME STATISTICAL VALUE. IT IS ASSUMED THAT E-N CURVES CAN BE WRITTEN AS A POWER-LAW.

THE DATA SET IS ANALYSED BY MEANS OF A DATA POOLING TECHNIQUE. THE BEST ESTIMATE OF THE SHAPE PARAMETER OF A TWO-PARAMETER WEIBULL DISTRIBUTION IS ACHIEVED BY A MAXIMUM LIKELIHOOD METHOD. SOME RESULTS ARE PRESENTED (R = 0.1 AT - 20 DEGREES C. AND AT + 20 DEGREES C.).

THE OTHER TOPIC IN THE RUG-PROJECT IS LARGE SCALE BLADE TESTING. SUCH TESTS ARE NEEDED TO VERIFY REAL STRUCTURE BEHAVIOUR ON THE BASIS OF RESULTS OF COUPON TESTS. THREE ROOT SECTIONS OF ROTORBLADES ARE TESTED AND FOUR OTHERS HAVE TO BE TESTED. SOME RESULTS ARE PRESENTED OF A TEST ON A D-SPAR OF NEW DESIGN.

Wissenschaftliches Gebiet

• engineering and technology › materials engineering › fibers
• engineering and technology › materials engineering › composites
• engineering and technology › environmental engineering › energy and fuels › renewable energy › wind power

Programm/Programme

• FP1-ENNONUC 3C - Research and development programme (EEC) in the field of Non-Nuclear Energy, 1985-1988

Thema/Themen

Data not available

Aufforderung zur Vorschlagseinreichung

Data not available

Finanzierungsplan

CSC - Cost-sharing contracts

Koordinator

GENT UNIVERSITY

• EU-Beitrag: Keine Daten
• Adresse: Sint Pietersnieuwstraat 25 ; 9000 GENT ; Belgien
• Gesamtkosten: Keine Daten

Beteiligte (1)

VRIJE UNIVERSITEIT VAN BRUSSEL (VUB)

Belgien

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• Adresse: PROF. HIRSCH
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