Abstract
The depth of short cracks (70-200 μm surface length) has been measured with an acoustic microscope by utilizing the nondestructive time-of-flight diffraction technique (TOFD). The depth measurements were first carried out in the transparent polymer polystyrene, thus allowing a comparison between the acoustical values and direct optical measurements: the agreement in the results was better than 95%. The depth of a 70 μm long crack in an aluminium alloy was then measured, demonstrating the application of the technique to metals.
Original language | English |
---|---|
Pages (from-to) | 4910-4917 |
Number of pages | 8 |
Journal | Journal of Materials Science |
Volume | 28 |
Issue number | 18 |
DOIs | |
State | Published - Jan 1993 |
ASJC Scopus subject areas
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering