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Improved sizing of impact damage in composites based on thermographic response
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Leckey, Cara A. Rogge, Matthew D. Winfree, William P. |
| Copyright Year | 2013 |
| Description | Impact damage in thin carbon fiber reinforced polymer composites often results in a relatively small region of damage at the front surface, with increasing damage near the back surface. Conventional methods for reducing the pulsed thermographic responses of the composite tend to underestimate the size of the back surface damage, since the smaller near surface damage gives the largest thermographic indication. A method is presented for reducing the thermographic data to produce an estimated size for the impact damage that is much closer to the size of the damage estimated from other NDE techniques such as microfocus x-ray computed tomography and pulse echo ultrasonics. Examples of the application of the technique to experimental data acquired on specimens with impact damage are presented. The method is also applied to the results of thermographic simulations to investigate the limitations of the technique. |
| File Size | 718284 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20130013393 |
| Archival Resource Key | ark:/13960/t45q9xd71 |
| Language | English |
| Publisher Date | 2013-04-29 |
| Access Restriction | Open |
| Subject Keyword | Air Transportation And Safety Nondestructive Tests Damage Assessment Aircraft Construction Materials Inspection Computerized Simulation Size Determination Ultrasonics Finite Element Method Carbon Fibers Howell Patricia A. Delaminating Aircraft Structures Impact Damage Thermography Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Article |
