Title:
Acoustic Emission Behavior of Concrete
Author(s):
P.F. Mlakar, R.E. Walker, B.R. Sullivan,
and V.P. Chiarito
Publication:
Symposium Paper
Volume:
82
Issue:
Appears on pages(s):
619-638
Keywords:
acoustic emission; nondestructive tests; pipes (tubes);
reinforced concrete; stresses; vibration.
DOI:
10.14359/6576
Date:
9/1/1984
Abstract:
The acoustic emissions of various concrete specimens under different loadings are studied. First, six monotonic and six cyclic load compression tests on 6- by 12-in. cylindrical concrete specimens were monitored for acoustic emission. Fundamental data were collected and analyzed and the Kaiser effect was observed. The data are presented as counts versus events to aid in the identification of source characteristics. Next, one multiaxial load (compression and tension) test was monitored. The slope of the counts- versus-events curve for this primarily tension test differed from those of the curves for the compression test. This difference suggests that the source characteristics of concrete acoustic emissions can be empirically separated and identified. Finally, the emissions detected in a model of a reinforced concrete circular conduit