TRID
Text Size:

Title:

Crack classification in concrete based on acoustic emission

Accession Number:

01174453

Record Type:

Component

Availability:

Find a library where document is available

Order URL: http://worldcat.org/issn/09500618

Abstract:

The fracture mode of cracking in concrete is normally changing from tensile mode to shear mode at impending failure. As for crack classification in concrete by acoustic emission (AE) techniques, two crack classification methods have been carried out. One of them is parameter-based method (parameter analysis) which has been carried out by employing two parameters of the average frequency and the RA value. The proportion of these two parameters, however, has not been determined yet. The other crack classification is simplified GreenÆs functions for moment tensor analysis (SiGMA) procedure which is known as signal-based method. The SiGMA analysis is based on the generalized theory of AE, while the parameter analysis results from an empirical relation. Therefore, an optimal proportion of the parameter analysis is in great demand. In this study, these crack classification methods are compared and discussed from results of three types of concrete failure tests. As a result, ratios of the shear crack which are identified by SiGMA analysis are good agreement with those by parameter analysis in the case that the proportion of the RA value and the average frequency is set to 1û200. (A) Reprinted with permission from Elsevier.

Language:

English

Authors:

OHNO, K
OHTSU, M

Pagination:

2339-2346

Publication Date:

2010-12

Serial:

Construction and Building Materials

Volume: 24
Issue Number: 12
Publisher: Elsevier
ISSN: 0950-0618

Subject Areas:

Materials; I32: Concrete

Source Agency:

TRL

Crowthorne House, Nine Mile Ride
Wokingham, Berkshire RG40 3GA United Kingdom

Source Data:

ITRD E157185

Files:

ITRD

Last Modified:

Sep 30 2010 11:12AM

More Articles from this Serial Issue: