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An acoustic emission and acousto-ultrasonic analysis of impact damaged composite pressure vessels (Document No: 19960028149)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Walker, James L. |
| Copyright Year | 1996 |
| Description | The use of acoustic emission to characterize impact damage in composite structures is being performed on composite bottles wrapped with graphite epoxy and kevlar bottles. Further development of the acoustic emission methodology will include neural net analysis and/or other multivariate techniques to enhance the capability of the technique to identify dominant failure mechanisms during fracture. The acousto-ultrasonics technique will also continue to be investigated to determine its ability to predict regions prone to failure prior to the burst tests. Characterization of the stress wave factor before, and after impact damage will be useful for inspection purposes in manufacturing processes. The combination of the two methods will also allow for simple nondestructive tests capable of predicting the performance of a composite structure prior to its being placed in service and during service. |
| File Size | 4029048 |
| Page Count | 100 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19960028149 |
| Archival Resource Key | ark:/13960/t85j2g22g |
| Language | English |
| Publisher Date | 1996-05-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Nondestructive Tests Neural Nets Performance Prediction Bottles Ultrasonic Tests Multivariate Statistical Analysis Pressure Vessels Failure Analysis Acoustic Emission Graphite-epoxy Composites Composite Structures Kevlar Trademark Impact Damage 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 |
