Cyclic Crack Growth Testing of an A.O. Smith Multilayer Pressure Vessel with Modal Acoustic Emission Monitoring and Data AssessmentDigital Wave Corp. (DWC) was retained by Jacobs ATOM at NASA Ames Research Center to perform cyclic pressure crack growth sensitivity testing on a multilayer pressure vessel instrumented with DWC's Modal Acoustic Emission (MAE) system, with captured wave analysis to be performed using DWCs WaveExplorerTM software, which has been used at Ames since 2001. The objectives were to document the ability to detect and characterize a known growing crack in such a vessel using only MAE, to establish the sensitivity of the equipment vs. crack size and / or relevance in a realistic field environment, and to obtain fracture toughness materials properties in follow up testing to enable accurate crack growth analysis. This report contains the results of the testing.
Document ID
20140008836
Acquisition Source
Langley Research Center
Document Type
Contractor Report (CR)
Authors
Ziola, Steven M. (Digital Wave Corp. Centennial, CO, United States)
Date Acquired
July 9, 2014
Publication Date
January 1, 2014
Subject Category
Mechanical EngineeringStructural Mechanics
Report/Patent Number
NASA/CR-2014-218156NF1676L-18207
Funding Number(s)
WBS: WBS 724297.20.21.01.03 CONTRACT_GRANT: NNA09DB39C PROJECT: OSMA SMA Project 724297