Location

La Jolla, CA

Start Date

1-1-1987 12:00 AM

Description

We have built the first commercially-made low frequency acoustic microscope, measured its characteristics, and explored its utility for NDE of composites and other aerospace materials. We studied the effects of numerical aperture and frequency on resolution and defect sensitivity. Interesting effects were noted. We determined limits on scanning speed and imaging depth and demonstrated the technical feasibility of the technique for practical problems. We obtained samples of rocket motor casings from the Navy, and structural parts from Navy and Air Force contractors, and demonstrated successful detection of defects in several cases of real interest.

Book Title

Review of Progress in Quantitative Nondestructive Evaluation

Volume

6A

Chapter

Chapter 2: Imaging, Microscopy, Inversion and Reconstruction

Section

Imaging and Microscopy

Pages

535-542

DOI

10.1007/978-1-4613-1893-4_61

Language

en

File Format

application/pdf

Share

COinS
 
Jan 1st, 12:00 AM

Imaging of Advanced Composites with a Low-Frequency Acoustic Microscope

La Jolla, CA

We have built the first commercially-made low frequency acoustic microscope, measured its characteristics, and explored its utility for NDE of composites and other aerospace materials. We studied the effects of numerical aperture and frequency on resolution and defect sensitivity. Interesting effects were noted. We determined limits on scanning speed and imaging depth and demonstrated the technical feasibility of the technique for practical problems. We obtained samples of rocket motor casings from the Navy, and structural parts from Navy and Air Force contractors, and demonstrated successful detection of defects in several cases of real interest.