Detection of subsurface defects using phase conjugate waves and forced vibration

Autor:	Osamu Ikeda, Yoshiaki Odai, Takuso Sato
Rok vydání:	1987
Předmět:	Physics Wave propagation business.industry Materials Science (miscellaneous) Acoustics Phase (waves) Signal Industrial and Manufacturing Engineering Vibration Four-wave mixing Optics Nondestructive testing Business and International Management business Phase conjugation Image resolution
Zdroj:	Applied Optics. 26:4231
ISSN:	1539-4522 0003-6935
Popis:	In four-wave mixing in BSO crystal, a periodic forced vibration is applied to both the object under test and the standard object to provide signal and reference waves, respectively. The system images subsurface defects of the test object by converting the difference of vibration between the test and the standard objects into image intensity. The principle and basic experimental results are given.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b1e84e2189d01d003f6c4b462a1d4882 https://doi.org/10.1364/ao.26.004231 Zobrazit plný text záznamu