Viscous material-filled synthetic defects for vibrothermography
| Autor: | Stephen D. Holland, Daniel J. Barnard, Jeremy Blake Renshaw |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Materials science
business.industry Fissure Mechanical Engineering Acoustics Delamination Ultrasonic testing Vibration amplitude Structural engineering Condensed Matter Physics Viscous material Vibration medicine.anatomical_structure Material defect Nondestructive testing medicine General Materials Science business |
| Zdroj: | NDT & E International. 42:753-756 |
| ISSN: | 0963-8695 |
| DOI: | 10.1016/j.ndteint.2009.07.003 |
| Popis: | This paper describes a method to create viscous material-filled (VMF) synthetic defects for vibrothermography that, like cracks, delaminations, or disbonds, generate heat when exposed to vibration. Standard synthetic defects used in nondestructive evaluation, such as EDM notches and flat-bottom holes, are not suitable for vibrothermography since they do not generate a measurable amount of heat when vibrated. An array of viscous material-filled synthetic defects can be used to evaluate the vibration field in a structure due to a specific source to determine if local vibration amplitudes are sufficient to detect cracks or other defects in different locations in a structure. These synthetic defects can be used to resolve the long-standing problem of testing vibration coverage in a specimen for vibrothermography. Such defects can be manufactured in a wide range of materials and can aid in probability of detection studies. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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