Machining of Aircraft Titanium with Abrasive-Waterjets for Fatigue Critical Applications
Laboratory tests were conducted to determine the fatigue performance of AWJ-machined aircraft titanium. Dog-bone specimens machined with AWJs were prepared and tested with and without sanding and dry-grit blasting with Al2O3 as secondary processes. The secondary processes were applied to remove the visual appearance of AWJ-generated striations and to clean up the garnet embedment. The fatigue performance of AWJ-machined specimens was compared with baseline specimens machined with CNC milling. Fatigue test results not only confirmed the findings of the aluminum dog-bone specimens but also further enhance the fatigue performance. In addition, titanium is known to be notoriously difficult to cut with contact tools while AWJs cut it 34% faster than stainless steel. AWJ cutting and dry-grit blasting are shown to be a preferred combination for processing aircraft titanium that is fatigue critical.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1059217
- Report Number(s):
- PNNL-SA-72050
- Resource Relation:
- Conference: ASME 2010 Pressure Vessels and Piping Division/K-PVP Conference (PVP2010), July 18–22, 2010, Bellevue, Washington, 5:42-53; Paper No. PVP2010-25063
- Country of Publication:
- United States
- Language:
- English
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