Skip to content
Journal article

Ultra-low noise front-end electronics for air-coupled ultrasonic non-destructive evaluation

Turo A, Salazar J, Chavez J, Kichou H, Gomez T, De Espinosa F, Garcia-Hernandez M ...see all

NDT and E International, vol. 36, issue 2 (2003) pp. 93-100

  • 15

    Readers

    Mendeley users who have this article in their library.
  • 17

    Citations

    Citations of this article.
  • 1.4k

    Views

    ScienceDirect users who have downloaded this article.
Sign in to save reference

Abstract

Air-coupled ultrasonic inspection has been demonstrated to be a non-contact method of great interest in non-destructive evaluation (NDE) applications. The absence of direct contact or a liquid couplant provides this technique very attractive benefits in front of the well-known and well-developed liquid-coupled ultrasonic inspection systems. A wide range of defects can be detected by means of ultrasound coupled to and harvested from the specimen in absence of contact when using appropriate transducers designed for their operation in air. This paper presents an easy way to integrate air-coupled piezoelectric transducers in conventional ultrasonic NDE equipment. The design of a specific front-end electronics by using an ultra-low noise amplifier enables existing inspection systems to be used for the dry-coupled ultrasonic test of materials and structures. The amplifier provides the receiver with a signal-to-noise ratio large enough for good quality signal processing and imaging. System dynamic ranges of more than 100 dB are achieved. ?? 2003 Elsevier Science Ltd. All rights reserved.

Author-supplied keywords

  • Air-coupled ultrasound
  • Low-noise amplifier
  • Non-destructive evaluation

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Get full text

Authors

Cite this document

Choose a citation style from the tabs below