A Design Study in Crack Patching,

reportActive / Technical Report | Accession Number: ADA089024 | Open PDF

Abstract:

A numerical investigation into the behaviour of cracked sheets which are patched with an overlay of composite material, is presented. This study gives guidelines as to the optimum location, size, and shape of patches. The main considerations are reduction in the stress intensity factors at the crack tip, the maximum fibre stress in the patch and the maximum shear stress in the adhesive bond between patch and sheet. Author

Author(s):
Jones, R. ; Callinan, R. J.
Author Organization(s):
AERONAUTICAL RESEARCH LABS MELBOURNE (AUSTRALIA)
Pagination:
0025

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARL/STRUC-376
 Subject Terms
Joint Capability Areas:
JCA_1_Force Support; JCA_4.6_Engineering; JCA_1.2_Force Preparation; JCA_1.2.3_Educating; JCA_5_Command and Control; JCA_6.4.1_Secure Information Exchange; JCA_5.3_Planning; JCA_6.4_Information Assurance; JCA_6_Net Centric; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.3_Maintain
Modernization Areas:
Quantum Science and Computing
Communities of Interest:
Air Platforms
Descriptor(s):
*COMPOSITE MATERIALS, *CRACKS, *REPAIR, *FEASIBILITY STUDIES, *ADHESIVE BONDING, STRESSES, FIBERS, OPTIMIZATION, INTENSITY, BONDED JOINTS, SHEAR STRESSES, SHEETS, NUMERICAL METHODS AND PROCEDURES, AUSTRALIA
Field(s)/Group(s):
Adhesives, Seals and Binders, Mechanics
Keyword(s):
Patching, Design studies, Crack tips, Crack patching
Report Date:
1979 Jul 01