Strength Comparison of Flawed Single-Layer and Multilayer AISI 301 Stainless Steel Pressure Vessels at Cryogenic Temperatures
Abstract
An experimental investigation was conducted to determine the strengths of single-layer and multilayer scale model tanks of AISI 301 stainless steel containing sharp notches and having the same total wall thickness. Material was used for both the single- layer and multilayer tanks having 60- and 70-percent cold reduction. The tanks were pressurized to burst at -320 and 423 F. Smooth, sharp-edge-notch, and sharp- center-notch tensile specimens were tested to provide data for correlation with the tank strengths. The results indicate that an increase of burst stress of approximately 15 to 20 percent for the flawed multilayer tanks can be obtained relative to the comparable single-layer flawed tanks. Three multilayer tanks exhibited failure of the outer layer prior to complete tank failure. This characteristic could provide a fail-safe type of de- sign. Although the multilayer method of construction reduced the notch sensitivity in the tanks, the more notch-ductile 60-percent cold-reduced material was still found to permit higher burst strengths than the 70-percent cold-reduced material where there was a sharp notch in the tank wall.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1965
- Accession Number
- ADA392793
Entities
People
- William S. Pierce
Organizations
- National Aeronautics and Space Administration