Abstract
Cubic-spline and discrete-quadratic polynomial techniques are presented for reliably computing up to third-order derivatives of experimental information. The concept is demonstrated by stress analyzing from measured displacements a transversely loaded plate and a beam under four-point bending. The respective displacement fields were recorded using holography and moiré. The accuracy of the employed numerical-differentiation techniques is indicated.
Original language | English (US) |
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Pages (from-to) | 105-112 |
Number of pages | 8 |
Journal | Experimental Mechanics |
Volume | 13 |
Issue number | 3 |
DOIs | |
State | Published - Mar 1973 |
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Aerospace Engineering