Higher-order numerical differentiation of experimental information - Cubic-spline and discrete-quadratic polynomials are described for numerically computing up through third-order derivatives. Concept is demonstrated by stress analyzing, from moiré and holographically recorded displacements, loaded plates and beams

R. E. Rowlands*, T. Liber, I. M. Daniel, P. G. Rose

*Corresponding author for this work

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Physics