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US 2012/0070668 A1Published application
Multi-ferroic structural health monitoring systems and methods
AssigneeThe Boeing Company
InventorsGary E. Georgeson, Robert James Miller
Life of this patent
Estimating the term…
Abstract
A method for testing a multiple layer structure is described. The method includes monitoring strains experienced by strain sensitive, magnetic particles disbursed within an adhesive between a first layer and a second layer, and analyzing any changes in the strains experienced by the particles to determine an amount of damage or degradation to the structure.
Claims25
A method for testing a multiple layer structure, said method comprising:
- monitoring strains experienced by strain sensitive, magnetic particles dispersed within an adhesive between a first layer and a second layer;
- and
- analyzing any changes in the strains experienced by the particles to determine an amount of damage or degradation to the structure.
A structural health monitoring system for multiple layer structures comprising:
- a plurality of strain-sensitive magnetic particles dispersed within a bonding area between at least two individual layers;
- at least one multiferroic sensor dispersed on a surface of the multiple layer structure, proximate to an area of the structure to be monitored, said at least one multiferroic sensor capable of monitoring strains experienced by said strain-sensitive magnetic particles;
- and
- a controller configured for periodic interrogation of the at least one multiferroic sensor.
1 more element
A composite structure comprising:
- a first layer;
- a second layer;
- an adhesive layer between said first layer and said second layer;
- and
- a plurality of strain-sensitive magnetic particles dispersed within said adhesive layer.
2 more elements
Dependencies are inferred from the claim text.