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Wing shape sensing from measured strain (Document No: 20150000844)
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Pak, Chan-Gi |
| Copyright Year | 2015 |
| Description | A new two step theory is investigated for predicting the deflection and slope of an entire structure using strain measurements at discrete locations. In the first step, a measured strain is fitted using a piecewise least squares curve fitting method together with the cubic spline technique. These fitted strains are integrated twice to obtain deflection data along the fibers. In the second step, computed deflection along the fibers are combined with a finite element model of the structure in order to extrapolate the deflection and slope of the entire structure through the use of System Equivalent Reduction and Expansion Process. The theory is first validated on a computational model, a cantilevered rectangular wing. It is then applied to test data from a cantilevered swept wing model. |
| File Size | 2488996 |
| Page Count | 23 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_20150000844 |
| Archival Resource Key | ark:/13960/t13n7581b |
| Language | English |
| Publisher Date | 2015-01-05 |
| Access Restriction | Open |
| Subject Keyword | System Equivalent Reduction and Expansion Process Shape Sensing Fiber Optic Strain Sensor Slopes Degrees of Freedom Deflection Rectangular Wings Strain Gages Wing Tips Fiber Optics Finite Element Method Wings Least Squares Method Strain Measurement Nastran Leading Edges Aerodynamic Loads Multidisciplinary Design Optimization Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Presentation |
