Patent ID: 11906472
Assignee: nan
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A testing system for concrete structures comprising:
a load sensor positionable to measure a load on the concrete structure to distinguish between at least two different load values;
a plurality of transmitters positionable on the structure and configured to independently transmit acoustic excitation waves into the structure;
a plurality of receivers positioned positionable on the structure and configured to receive diffuse waves of the excitation waves from the plurality of transmitters; and
an electronic computer executing a program stored in a non-transitory medium to:
receive the diffuse waves from the plurality of receivers;
calculate a decorrelation coefficient based on the diffuse waves and a wave speed of the diffuse waves for at least two different load values;
calculate a sensitivity kernel based on the diffuse waves; and
apply an inversion algorithm to estimate a distribution density based on the decorrelation coefficient and the sensitivity kernel and indicating a presence of defects within the concrete structure.