TITLE

Reflectometric detection of shock wave propagation within a concrete wall

AUTHOR(S)
Biele, Joachim K.
PUB. DATE
April 2000
SOURCE
AIP Conference Proceedings;2000, Vol. 505 Issue 1, p1029
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A reflectometer device was set up in order to observe shock wave propagation in concrete. Reflective elements were comprised of an upper edge of the concrete wall and the front of an embedded conduit which ran through the thickness of the wall. The reflectometer then was completed by two PVDF film sensors. The first one was located directly in the rectangular center of the vertical plane above the conduit center line. Thus, all its four corners were of equal distance, equal to the wall width of 40 cm. The second one was placed on a plug closing the intake area of the conduit in order to take face-on measurement of the blast from a HE charge to initiate shock waves in the concrete material. Measurements were taken after detonating HE face-on in front of the intake area sensor. From the reflectometer geometry and times between shocks, velocities within this type of concrete were deduced. The pulse profile is found to represent detailed material behavior under shock loading.
ACCESSION #
5985641

 

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