Improved Sonic Appartus foir Determining the Dynamic Modulus of Concrete Specimens

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Title: Improved Sonic Appartus foir Determining the Dynamic Modulus of Concrete Specimens

Author(s): C. E. Goodell

Publication: Journal Proceedings

Volume: 47

Issue: 9

Appears on pages(s): 53-60

Keywords: no keywords

Date: 9/1/1950

Abstract:
After a brief introduction to sonic testing and a description of commercial equipment, the appartus built for the Michigan State Highway Department is discussed. Reliable results can be obtained by an unskilled worker with this compact equipment which as twice the frequency band spread of the usual oscillator. A wiring diagram of the sonic appartus is included.