Detection of Leaky-Rayleigh Waves at Air-Solid Interfaces by Laser Interferometry

Abstract

Leaky-Rayleigh waves have been studied extensively at liquid-solid interface in the last 30 years [1–4]. Both leaky-Rayleigh and leaky-Lamb waves have found many application in Nondestructive Evaluation, e.g. surface defect characterization, etc [5,6]. Because of the difficulties associated with ultrasonic wave generation and detection in air in the megaHerz region air coupled non destructive evaluation has only recently been explored [7,8].KeywordsRayleigh WaveRayleigh Wave VelocityUltrasonic Wave GenerationOptical HeterodyneUltrasonic PressureThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.