Photoelastic stress analysis on a Phoenix 7. 9-meter blade

Conference · Tue Oct 01 00:00:00 EDT 1991

OSTI ID:5207962

Musial, W D; Jenks, M D; Osgood, R M; Johnson, J A

Photoelastic tests were conducted on the Phoenix 7.9-meter blade to develop the basic methodology for locating critical strain areas on full-scale composite structures. Under relatively low elastic loading the strain fields over various regions on the blade planform were documented with 35mm photographs under different loading conditions at the Solar Energy Research Institute (SERI) Structural Test Facility (STF). Strain concentrations were easily located and quantified. Principal strain magnitudes and directions were determined at the highest strain areas using separator gages. Results were compared to measured operating loads. This experiment demonstrated the value of experimental stress analysis using the photoelastic technique for the evaluation of composite blade designs. 9 refs., 6 figs., 3 tabs.

• Research Organization: National Renewable Energy Lab., Golden, CO (United States)
• Sponsoring Organization: USDOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-83CH10093
• OSTI ID: 5207962
• Report Number(s): NREL/TP-257-4512; CONF-910912-1; ON: DE92001156
• Resource Relation: Conference: Seminar on design and construction of storage and disposal facilities for low-level radioactive wastes, Troyes (France), 30 Sep - 4 Oct 1991
• Country of Publication: United States
• Language: English

Related Subjects

17 WIND ENERGY
42 ENGINEERING
PHOTOELASTICITY
TURBINE BLADES
STRESS ANALYSIS
COATINGS
DYNAMIC LOADS
MATERIALS TESTING
STRAINS
TESTING
WIND TURBINES
ELASTICITY
MACHINERY
MECHANICAL PROPERTIES
TENSILE PROPERTIES
TURBINES
TURBOMACHINERY
PHOTOELASTIC STRESS ANALYSIS
PHOENIX 7.9-METER BLADE
CRITICAL STRAIN AREAS
170602* - Wind Energy Engineering- Turbine Design & Operation
420500 - Engineering- Materials Testing