Pressure bag molding : manufacturing, mechanical testing, non-destructive evaluation, and analysis

摘要: Process limitations in Resin Transfer Molding (RTM) have been identified that make this otherwise popular process less attractive for the fabrication of wind turbine blades, especially as size new blades increases. Three main areas research were addressed work. The first was “pressure bag molding,” a variation RTM designed to remedy inherent with RTM. Critical manufacturing parameters and testing conducted compare these pressure molding those second area nondestructive evaluation method fiberglass materials involves transmittance infrared light through laminate. Exploratory tests gain an understanding behavior evaluation. A damage accumulation test properties products molding. third focus development numerical progressive model. ANSYS used model complex layered, angled laminates chosen comparison. parameter showed superior performance Mechanical similar products, except slightly reduced compressive strength test. seemed provide reasonable results. resolution mechanical measurement not adequate facilitate comparison SAND2006-7855P Unlimited Release Printed October 2007 This report is thesis submitted by author partial fulfillment requirements degree Master Science Engineering at Montana State University-Bozeman, January 2004. Copyright Eric Barnholt Larsen All Rights Reserved. work partly funded Sandia Contract P.O. 238810 University (MSU). Doug Cairns MSU Principal Investigator Tom Ashwill Technical Manager. U.S. Government has paid-up, non-exclusive, irrevocable worldwide license reproduce, prepare derivative works, distribute copies public, perform publicly display publicly, or on behalf Government.