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Experimental investigation of strain concentrations caused by inserts in sandwich beams

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National Technical University of Athens   

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Experimental investigation of strain concentrations caused by inserts in sandwich beams (EN)
Kollarini, MJ (EN)
Tsouvalis, NG (EN)
journalArticle (EN)
2014-03-01T01:28:22Z
2008 (EN)
This paper presents an experimental study of the strain concentrations developing across the insert-core junctions in a sandwich beam with an implanted stiff insert into its core. Strain measurements were carried out at several positions on the skins and across the insert-core junction, for several sandwich beam specimens loaded in 3-points bending and having inserts with various geometries. The materials used were typical marine glass/polyester composite and PVC foams and the specimens were manufactured with the vacuum infusion method. A full material characterization was performed for the composite skins. The experimental results demonstrated a pure linear bending response of the specimens, as well as significant strain concentration factors across the insert-core junction, reaching values up to 3.3. Strain concentration factors measured for butt inserts were lower than those measured on the tension side of the specimens with scarf inserts. Transverse strains measurements verified that all specimens were in a plane stress state. © Journal compilation © 2008 Blackwell Publishing Ltd. (EN)
Materials Science, Characterization & Testing (EN)
Material characterizations (EN)
Sand wich beams (EN)
Insert (EN)
Composite skins (EN)
Bending (deformation) (EN)
A plane (EN)
Strain concentration factors (EN)
Transverse strains (EN)
Concentration (process) (EN)
Offshore oil well production (EN)
Vacuum applications (EN)
Composite (EN)
Vacuum infusion (EN)
Sandwich structures (EN)
Core junctions (EN)
Strain concentrations (EN)
Strain (EN)
Sandwich (EN)
Foams (EN)
Joints (structural components) (EN)
Experimental investigations (EN)
Strain measurement (EN)
Skin (EN)
Experimental studies (EN)
Glass/polyester (EN)
Linear bending (EN)
Strain (EN)
English
BLACKWELL PUBLISHING (EN)
National Technical University of Athens
Digital Library of National Technical University of Athens | Dspace@NTUA
Κεντρική Βιβλιοθήκη Ε.Μ.Π.
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