Accession Number:

ADA329633

Title:

Mechanics of Widespread Fatigue Damage & Life Enhancement Methodologies for Aging Aerospace Structures.

Descriptive Note:

Final technical rept. 15 Apr 93-14 Dec 96,

Corporate Author:

GEORGIA INST OF TECH ATLANTA COMPUTATIONAL MECHANICS CENTER

Personal Author(s):

Report Date:

1997-05-01

Pagination or Media Count:

333.0

Abstract:

The major aircraft structural situation considered in this research is that of a thin skin stiffened by orthogonal frames and stringers, with the possibility of a lap joint. Effects on this situation considered in this research are 1 impact by foreign objects, 2 fatigue damage due to repetitive loading, and 3 corrosion damage. Various theoretical models, pertaining to the response of the subject aircraft structure to these effects, have been considered 1 the Finite Element Alternating Method FEAM applied to a single crack, 2 FEAM applied to Multiple Site Damage MSD, and others. An analysis is also presented which pertains to the repair of cracks by application of a composite patch using adhesive.

Subject Categories:

  • Civilian Aircraft
  • Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE