Comparison of the Time Domain Windows Specified in the ISO 18431 Standards Used to Estimate Modal Parameters in Steel Plates

Table 1

Natural frequencies [Hz] estimated by using three different windows.

Vibrational mode	Numerical; model	Hanning	Flat TOP	Rectangular
First bending	636	640.9	634.8	636.3
First torsion	671	671.4	671.4	668.3
Second torsion	1472	1465	1469	1468
Second bending	1640	1697	1691	1694