A Novel Acoustic Emission Technique to Monitor Damage Evolution in Masonry Structures

2010 ◽  
Vol 163-167 ◽  
pp. 2461-2464
Author(s):  
Paola Antonaci ◽  
Pietro G. Bocca ◽  
Davide Masera
Keyword(s):  
Acoustic Emission ◽  
Damage Evolution ◽  
Mechanical Response ◽  
Acoustic Emission Technique ◽  
Destructive Testing ◽  
Cyclic Action ◽  
Emission Analysis ◽  
Analysis Technique ◽  
Non Destructive

The aim of this work is to analyse the mechanical response of the masonry specimens under long-term action by means of cyclic tests. To this end laboratory tests were carried out at the Non-Destructive Testing Laboratory of the Politecnico di Torino. The Acoustic Emission technique was employed to assess the damage evolution, and the mechanical properties decay in order to evaluate the extent and the evolution of micro and macro-cracking due to cyclic action until structural collapse in masonry blocks and mortar layers by means of a novel Acoustic Emission analysis technique.

Fatigue Crack Propagation Monitoring by Acoustic Emission Signal Analysis

2011 ◽  
Vol 465 ◽  
pp. 370-373 ◽  
Author(s):  
Paola Antonaci ◽  
Pietro G. Bocca ◽  
Davide Masera
Keyword(s):  
Acoustic Emission ◽  
Signal Analysis ◽  
Mechanical Response ◽  
Non Destructive Testing ◽  
Destructive Testing ◽  
Testing Laboratory ◽  
Cyclic Action ◽  
Emission Signal ◽  
Non Destructive

The aim of this work is to analyse the mechanical response of the masonry specimens under long-term action by means of cyclic tests. To this end laboratory tests were carried out at the Non-Destructive Testing Laboratory of the Politecnico di Torino. The Acoustic Emission technique was employed to assess the damage evolution, and the mechanical properties decay in order to evaluate the extent and the evolution of micro and macro-cracking due to cyclic action until structural collapse in masonry blocks and mortar layers.

A Review of Acoustic Emission Technique for Machinery Condition Monitoring: Defects Detection & Diagnostic

2012 ◽  
Vol 229-231 ◽  
pp. 1476-1480 ◽  
Author(s):  
Salah M. Ali Al-Obaidi ◽  
M. Salman Leong ◽  
R.I. Raja Hamzah ◽  
Ahmed M. Abdelrhman
Keyword(s):  
Acoustic Emission ◽  
Condition Monitoring ◽  
State Of The Art ◽  
The State ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Acoustic Emission Technique ◽  
Destructive Testing ◽  
Machinery Condition Monitoring ◽  
Non Destructive

Acoustic emission (AE) measurements are one of many non-destructive testing methods which had found applications in defects detection in machines. This paper reviews the state of the art in AE based condition monitoring with particular emphasis on rotating and reciprocating machinery applications. Advantages and limitations of the AE technique in comparison to other condition monitoring techniques in detecting common machinery faults are also discussed.

Acoustic Emission Method for Monitoring Corrosion Reactions

CORROSION ◽  
1976 ◽  
Vol 32 (4) ◽  
pp. 121-126 ◽  
Author(s):  
T. W. RETTIG ◽  
M. J. FELSEN
Keyword(s):  
Acoustic Emission ◽  
Non Destructive Testing ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
Destructive Testing ◽  
Corrosion Reaction ◽  
Reaction Processes ◽  
Non Destructive ◽  
Corrosion Research

Abstract There is a continuing need for new test techniques to follow corrosion reaction processes and to predict long-term materials performance in aggressive environments. Additionally, there is a growing awareness of the importance of applying non-destructive inspection to determine the presence of corrosion in non-visible areas of equipment and structures. The possibilities of utilizing acoustic emission for a broad range of applications in the study of these problems were explored. Proprietary methods were developed to follow corrosion reactions and to monitor corrosion of simulated and actual structures. These experiments point out the applicability of acoustic emission as a sensitive new tool for corrosion research and non-destructive testing (NDT) in corrosion prone structures and equipment.

Experimental Study on Detecting the Building Damage Caused by Fire with Acoustic Emission Technique

2011 ◽  
Vol 90-93 ◽  
pp. 3117-3121
Author(s):  
Jun Li Lv ◽  
Yu Li Dong ◽  
Jian Dong Sun
Keyword(s):  
Experimental Study ◽  
Acoustic Emission ◽  
Damage Evolution ◽  
Detection Method ◽  
Building Damage ◽  
Acoustic Emission Technique ◽  
Whole Process ◽  
Fire Experiment ◽  
Non Destructive ◽  
Peak Value

Acoustic emission technique is a non-destructive detection method that can continuously and dynamically detect the damage evolution inside the structure. In this paper, a local fire experiment is conducted within an entity building to acquire and analyze acoustic emission parameters in the whole process of the experiment. Results show that the number of events is closely related to the crack development, the peak value of the energy rate occurs when a large number of cracks appear, signals with the amplitude less than 80db account for more than 90%, signal amplitudes produced by the building damage in different stages from fire development to fire attenuation are different, and most signals with the amplitude of 75db – 85db are produced in the stage of fire development.

scholarly journals Corrosion Assessment of Pre-corrosion Concrete Specimens using Acoustic Emission Technique

2021 ◽  
Vol 53 (2) ◽  
pp. 210111
Author(s):  
Ahmad Zaki ◽  
Zainah Ibrahim
Keyword(s):  
Acoustic Emission ◽  
Small Scale ◽  
Load Testing ◽  
Non Destructive Testing ◽  
Shear Cracks ◽  
Flexural Behaviour ◽  
Acoustic Emission Technique ◽  
Destructive Testing ◽  
Loading Test ◽  
Non Destructive

The acoustic emission (AE) technique is known as a non-destructive testing (NDT) method, which is effective for assessing corrosion in concrete structures. This study aims to utilize the AE technique, for the assessment of pre-corroded concrete specimens, which are under load testing. Experiments were carried out on small-scale pre-corroded specimens, which were subjected to monotonic loading. The results showed that the majority of the beam specimens failed with shear cracks. Three AE parameters, namely acoustic emission hits, as well as the RA and AF values, were also used, in order to assess the flexure behaviour of the pre-corroded beam specimens. These experiments helped to understand the flexural behaviour of pre-corroded specimens, which were under a loading test, via the use of the AE technique.

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