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New non destructive method to find flaws in concrete
Researchers at the Commerce Department’s National Bureau of Standards describe an impact echo technique that uses surface mounted receivers to capture sound waves reflected by internal flaws. Flaw location is inferred from echo travel times and can apply to plain or reinforced concrete.
MENTIONED IN THIS ARTICLE
Commerce Department
National Bureau of Standards
NBS
Nicholas Carino
NBS Center For Building Technology
HS. Lew