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Multi-lab comparison on r-curve methodologies: alloy 2024-t3
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Reynolds, Anthony P. |
| Copyright Year | 1994 |
| Description | In an effort to determine an optimum method for ranking the fracture toughness of developmental aluminum alloys for High Speed Civil Transport applications, five labs performed K and/or J based fracture tests on aluminum alloy 2024-T3. Two material thicknesses were examined: 0.063 in. and 0.125 in. Middle crack tension and compact tension specimens were excised from 60 in. wide middle crack tension panels which had been previously tested at Boeing. The crack resistance curves generated were compared to the R-curves from 60 in. wide specimens. The experimental program indicated that effective stress intensity from secant compliance based crack length and stress intensity calculated from J-integral testing were equivalent. In addition, comparison of different specimen sizes and configurations indicated that standard validity requirements for compact tension specimens may be overly restrictive. |
| File Size | 939183 |
| Page Count | 44 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19950010445 |
| Archival Resource Key | ark:/13960/t0rr6s23b |
| Language | English |
| Publisher Date | 1994-10-01 |
| Access Restriction | Open |
| Subject Keyword | Metallic Materials Thickness Panels J Integral Stress Intensity Factors Aluminum Alloys Aircraft Design Tension Supersonic Transports Fracture Strength Fracturing Loads Forces Crack Propagation Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
