Accession Number:

ADA172732

Title:

Structure Dynamic Theories of Fracture Diagnosis.

Descriptive Note:

Technical rept. Jan-Dec 85,

Corporate Author:

NEW MEXICO UNIV ALBUQUERQUE DEPT OF MECHANICAL ENGINEERING

Personal Author(s):

Report Date:

1986-03-03

Pagination or Media Count:

137.0

Abstract:

Two modal theories of damage diagnosis are presented. The modal frequency theory, based on the changes in a modal frequencies of a structure due to damage, can identify both the location and the intensity of a crack for simple fracture configurations. The transmissibility theory, which uses the changes in transmissibilities across a structure, is proposed as a feasible method for large structures. The report reveals the uncertainties of the modal frequency theory. The transmissibility theory is illustrated with a frame structure in localizing a fracture damage.

Subject Categories:

  • Structural Engineering and Building Technology
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE