Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Patent
1980-05-02
1982-01-05
Willis, Davis L.
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
250338, G01J 100
Patent
active
043096107
ABSTRACT:
A method of determining location and orientation of metallic reinforcing members in reinforced concrete whereby the members are heated inductively, e.g. by a spiral coil lying in a plane parallel to the plane of the reinforced concrete slab, and the heating of the members is detected by thermally sensitive means, such as a camera (e.g. thermovision), film or paper responsive to infrared radiation. The heat pattern represents the pattern of reinforcement.
REFERENCES:
patent: 4005289 (1977-01-01), Del Grande
patent: 4174480 (1980-11-01), Kaihara et al.
Hochtief Aktiengesellschaft vorm. Gebruder Helfmann
Ross Karl F.
Willis Davis L.
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