Published January 1985 | Version v1
Report Metadata-only

NDE of structural ceramics by high frequency ultrasonics

Creators

  • 1. National Research Council of Canada, Ottawa, ON (Canada)

Description

A high frequency ultrasonic system with computer controlled data acquisition and analysis has been described. The system has been used to detect surface flaws in the size range of 20-300 μm in hot pressed silicon nitride. The detection technique is based on Rayleigh waves which are generated as a result of the mode conversion of compressional waves incident from water onto the surface of the test material at near the Rayleigh angle. The scattering of the Rayleigh waves by surface cracks has been detected, analysed in the time and frequency domains, and correlated with the size of the cracks

Part of:
NDT in Canada - the next 20 years

Additional details

Publishing Information

Imprint Title
NDT in Canada - the next 20 years
Imprint Pagination
473 p.
Journal Page Range
p. 307-315.
Report number
AECL--8707

Conference

Title
5. Canadian conference on nondestructive testing.
Dates
28-31 Oct 1984.
Place
Toronto, ON (Canada).

INIS

Country of Publication
Canada
Country of Input or Organization
Canada
INIS RN
22069357
Subject category
S42: ENGINEERING;
Resource subtype / Literary indicator
Conference
Descriptors DEI
CRACKS; SILICON NITRIDES; ULTRASONIC TESTING
Descriptors DEC
ACOUSTIC TESTING; MATERIALS TESTING; NITRIDES; NITROGEN COMPOUNDS; NONDESTRUCTIVE TESTING; PNICTIDES; SILICON COMPOUNDS; TESTING

Optional Information