Patent ID: 11946877
Assignee: GIATEC SCIENTIFIC INC.
Field: Measurement (Instruments)
Classification: CPC G  B | IPC B  G

Claim 10:
11. A system for performing an assessment of a predetermined characteristic of a concrete structure comprising:
a measurement device comprising:
a pair of first electrodes configured to be placed into contact with an area of the concrete structure containing a rebar;
a pair of second electrodes configured in line with and between the pair of first electrodes and to contact the area of the concrete structure containing the rebar whilst the pair of first electrodes are in contact with the area of the concrete structure containing the rebar;
an electrical circuit coupled to the pair of first electrodes for generating a narrow electrical pulse to a pair of first electrodes; and
a measurement circuit for measuring a time dependent voltage response from the pair of second electrodes; and

an analysis system executing instructions to configure the analysis system to perform a process comprising:
receiving the measured time dependent voltage response from the measurement device;
fitting the measured time dependent voltage response to a theoretical transient to establish a fitted transient function;
determining constants of the fitted transient function; and
determining one or more electrical equivalent circuit elements of an equivalent circuit model of the concrete structure containing the rebar in dependence upon the constants of the fitted transient response; and

the assessment of the predetermined characteristic of the concrete structure is established in dependence upon the determined one or more electrical equivalent circuit elements of the equivalent circuit model of the concrete structure.