Stress intensity factors for multiple cracks in an adhesively bonded sandwich sheet

Journal Article · Fri Jan 01 04:00:00 EST 1993 · Journal of Engineering Materials and Technology; (United States)

DOI:https://doi.org/10.1115/1.2902146· OSTI ID:6468686

Nishimura, T ^[1]

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1. Mitsubishi Heavy Industries, Ltd., Nagoya (Japan)

A new method is proposed for analyzing stress intensity factors of multiple cracks in an adhesively bonded metallic sandwich sheet. Using a basic solution of a single crack and taking unknown density of surface tractions and adhesive shear stresses, Fredholm integral equations and compatibility equations are formulated based upon stress free condition along each crack and displacement continuity between the sheets and adhesive layers, respectively. These equations are solved simultaneously, and the stress intensity factors of multiple cracks are determined from the derived density of tractions. It is shown that the mutual interaction of multiple cracks in a sandwich sheet is smaller than that in a monolithic sheet. Also, mutual interaction of cracks in the same sheet is smaller than that of cracks in the different sheets.

• OSTI ID: 6468686
• Journal Information: Journal of Engineering Materials and Technology; (United States), Journal Name: Journal of Engineering Materials and Technology; (United States) Vol. 115:1; ISSN 0094-4289; ISSN JEMTA8
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360603* -- Materials-- Properties
AEROSPACE INDUSTRY
BONDING
COMPOSITE MATERIALS
CRACKS
DATA
ELEMENTS
EQUATIONS
FABRICATION
HONEYCOMB STRUCTURES
INDUSTRY
INFORMATION
INTEGRAL EQUATIONS
JOINING
MATERIALS
MECHANICAL PROPERTIES
MECHANICAL STRUCTURES
METALS
NUMERICAL DATA
SHEAR PROPERTIES
STRESS ANALYSIS
STRESS INTENSITY FACTORS
THEORETICAL DATA
WEIGHT