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F. Qiu et al.
Fig. 15.3 S at the floor of
the tank AE localization
triangulation net
sensor is placed at the center of the tank bottom, it can form a triangle with the No. 1
and No. 2 sensors positioning, the attenuation of acoustic source S can be reduced.
15.3 Experiment of Acoustic Source Location
and Identification Method for Simulated Tank Floor
15.3.1 Experimental System and Parameter Settings
In this experiment, the round steel plate made of Q235 carbon structural steel, which
is commonly used in the bottom plate of atmospheric vertical storage tank, with the
size of 1600 mm diameter and 8 mm thickness. DP3I sensor and the third generation
full digital system produced by PAC are selected [6]. PDT is set to 300 µs, HDT is
600 µs, HLT is 1000 µs. Since the positioning acoustic source in this experiment
comes from the 2H (0.5) lead breaking, the detection threshold is set to 40 dB [7].
15.3.2 Sensor Layout Program and Experiment
In this experiment, six sensors are evenly coupled to the periphery of the circular
plate. At the same time, 1 sensor is coupled in the center of the circular plate. The
sensor layout and lead breaking position are shown in Fig. 15.4. Table 15.1 shows
the coordinates of sensors 1–6.
F. Qiu et al.
Fig. 15.3 S at the floor of
the tank AE localization
triangulation net
sensor is placed at the center of the tank bottom, it can form a triangle with the No. 1
and No. 2 sensors positioning, the attenuation of acoustic source S can be reduced.
15.3 Experiment of Acoustic Source Location
and Identification Method for Simulated Tank Floor
15.3.1 Experimental System and Parameter Settings
In this experiment, the round steel plate made of Q235 carbon structural steel, which
is commonly used in the bottom plate of atmospheric vertical storage tank, with the
size of 1600 mm diameter and 8 mm thickness. DP3I sensor and the third generation
full digital system produced by PAC are selected [6]. PDT is set to 300 µs, HDT is
600 µs, HLT is 1000 µs. Since the positioning acoustic source in this experiment
comes from the 2H (0.5) lead breaking, the detection threshold is set to 40 dB [7].
15.3.2 Sensor Layout Program and Experiment
In this experiment, six sensors are evenly coupled to the periphery of the circular
plate. At the same time, 1 sensor is coupled in the center of the circular plate. The
sensor layout and lead breaking position are shown in Fig. 15.4. Table 15.1 shows
the coordinates of sensors 1–6.