Vibration Analysis for Monitoring of Ancient Tie-Rods

Table 1

Experimental acquisitions.

Tie-rod number	Cross-section [mm^2]	Length [mm]	Natural frequencies [Hz]
			I	II	III	IV	V	VI
PT1		3178	15.30	—	49.00	—	92.30	—
PT2		3233	16.80	—	53.80	—	98.80	—
PT3		3228	16.30	—	53.80	—	103.00	—
PT4		3218	16.00	33.50	51.30	71.80	95.00	121.80
PT5		3188	5.50	—	28.30	—	65.50	91.00
PT6		2748	21.75	49.00	85.25	131.20	188.50	255.20
PT7		2768	20.00	45.50	80.00	123.80	179.20	242.20
PT8		3358	14.75	32.75	55.75	85.25	121.20	176.50
PT9		3248	15.50	34.25	58.75	90.00	128.00	173.00
PT10		3388	17.75	38.00	63.25	94.75	133.00	177.50
PT11		3440	13.25	29.75	51.25	78.25	111.50	150.80
PT12		3298	14.50	30.25	48.25	69.25	94.00	122.20
PT13		3140	13.75	—	47.25	—	95.75	—
PT14		2510	19.25	46.50		84.00	—	134.50