| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Coatings to Protect Materials from Extreme Environments
|
| Presentation Title |
Novel Multiscale Shear Adhesion Testing of Thermal Barrier Coatings |
| Author(s) |
John T. Daspit, Clifton Bumgardner, Xiaodong Li |
| On-Site Speaker (Planned) |
John T. Daspit |
| Abstract Scope |
Advanced testing techniques are required to elucidate the materials properties of advanced materials and coatings. Island Shear Adhesion testing (ISAT) allows for mitigation of bending forces to directly target Mode II fracture mechanics at a range of length scales. Here, we apply ISAT to shear pre-milled coating islands. This test differs from other adhesion tests by targeting precise regions and interfaces of interest. In typical interlaminar adhesion tests, the weakest link (whether interfacial or intercoating) fractures, preventing further information from being gathered on other layers. ISAT has been performed on thermal barrier coatings with success and will be compared with results from pull off tests and interlaminar tensile tests. |