Tubular lap joints for wind turbine applications
A combined analytical/experimental study of the strength of thick- walled, adhesively bonded PMMA-to-aluminum and E-glass/epoxy composite-to-aluminum tubular lap joints under axial load has been conducted. Test results include strength and failure mode data. Moreover, strain gages placed along the length of the outer tubular adherend characterize load transfer from one adherend to the other. The strain gage data indicate that load transfer is nonuniform and that the relatively compliant PMMA has the shorter load transfer length. Strains determined by a finite element analysis of the tested joints are in excellent agreement with those measured. Calculated bond stresses are highest in the region of observed failure, and extensive bond yielding is predicted in the E- glass/epoxy composite-to-aluminum joint prior to joint failure. 4 refs., 13 figs., 1 tab.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (USA)
- Sponsoring Organization:
- DOE/CE
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 6494563
- Report Number(s):
- SAND-90-1978C; CONF-910104--1; ON: DE91001341
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
170602* -- Wind Energy Engineering-- Turbine Design & Operation
36 MATERIALS SCIENCE
360103 -- Metals & Alloys-- Mechanical Properties
360603 -- Materials-- Properties
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
A CODES
ALUMINIUM
COMPOSITE MATERIALS
COMPRESSION STRENGTH
COMPUTER CODES
DESIGN
ELEMENTS
EPOXIDES
FAILURES
FATIGUE
FINITE ELEMENT METHOD
GLASS
HORIZONTAL AXIS TURBINES
JOINTS
LAP WELDS
MACHINERY
MATERIALS
MECHANICAL PROPERTIES
METALS
NUMERICAL SOLUTION
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
ORGANIC POLYMERS
PETROCHEMICALS
PETROLEUM PRODUCTS
POLYMERS
RESINS
SHELLS
STRESSES
SURFACE PROPERTIES
SURFACE TENSION
TENSILE PROPERTIES
TESTING
TURBINE BLADES
TURBINES
TURBOMACHINERY
VERTICAL AXIS TURBINES
WELDED JOINTS
WIND TURBINES