US 12,332,214 B2
Structure soundness evaluation using elastic waves on divided areas
Hidefumi Takamine, Shinagawa (JP); Yuki Ueda, Yokohama (JP); Kazuo Watabe, Yokohama (JP); Tomoki Shiotani, Kyoto (JP); and Katsufumi Hashimoto, Kyoto (JP)
Assigned to Kabushiki Kaisha Toshiba, Tokyo (JP); and Kyoto University, Kyoto (JP)
Filed by Kabushiki Kaisha Toshiba, Tokyo (JP); and Kyoto University, Kyoto (JP)
Filed on Feb. 25, 2021, as Appl. No. 17/184,667.
Application 17/184,667 is a continuation of application No. PCT/JP2018/034004, filed on Sep. 13, 2018.
Prior Publication US 2021/0181157 A1, Jun. 17, 2021
Int. Cl. G01N 29/14 (2006.01); G01N 29/24 (2006.01); G01N 29/44 (2006.01)
CPC G01N 29/14 (2013.01) [G01N 29/2437 (2013.01); G01N 29/44 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A structure evaluation system comprising:
a plurality of sensors detecting elastic waves; and
one or more processor configured to:
locate elastic wave sources on the basis of the elastic waves detected by each of the plurality of sensors;
set a plurality of divided areas by dividing an elastic wave source distribution into the plurality of divided areas which are equal to or smaller than a size of damage that a user wants to detect and include one or more position to which an impact is applied, the elastic wave source distribution indicating the location of the elastic wave sources obtained based on results of locating the elastic wave sources;
compare a feature amount of the elastic waves in each of the plurality of divided areas with one or more criteria determined according to an installation position of the plurality of sensors in the elastic wave source distribution, the feature amount being a density of each of the plurality of divided areas dividing the elastic wave source distribution obtained based on the results of locating the elastic wave sources; and
after the comparison, evaluate a deterioration state of a structure for each of the plurality of divided areas based on the one or more criteria.