Theory and Case Analysis of Impact Echo Method

2021 ◽  
Keyword(s):  
Case Analysis ◽  
Impact Echo ◽  
Impact Echo Method

Estimation of Impact-Echo Method for the Assessment of Long-Term Frost Resistance of Ceramic Tiles

2014 ◽  
Vol 1000 ◽  
pp. 285-288 ◽  
Author(s):  
Michal Matysík ◽  
Iveta Plšková ◽  
Zdeněk Chobola
Keyword(s):  
Frost Resistance ◽  
Surface Condition ◽  
Acoustic Method ◽  
Ceramic Tiles ◽  
Impact Echo ◽  
Thaw Cycle ◽  
Freeze Thaw Cycle ◽  
Confocal Scanning ◽  
The Impact ◽  
Impact Echo Method

The aim of this paper is to evaluate the possibility of using the Impact-echo method for assessment of extremely long period of frost resistance of ceramic tiles. Sets of ceramic tiles of the Ia class to EN 14 411 B standard made by manufacture RACOs have been analyzed. The ceramic tiles under investigation have been subjected to 500 freeze-thaw-cycle based degradation in compliance with the relevant EN ISO 10545-12 standard. To verify the correctness of the Impact-echo method results, additional physical properties of the ceramic tiles under test have been measured. To analyze the specimen surface condition, we also used Olympus LEXT 3100 confocal scanning microscope. It has been proved that the acoustic method Impact-echo is a sensitive indicator of the structure condition and can be applied to the ceramic cladding element frost resistance and service life prediction assessment.

Estimation of Thickness of Concrete Slab Members Using Impact Echo Method

2014 ◽  
Vol 605 ◽  
pp. 139-142
Author(s):  
Seong Uk Hong ◽  
Yong Taeg Lee ◽  
Seung Hun Kim ◽  
J.H. Na
Keyword(s):  
Concrete Slab ◽  
Hardness Test ◽  
Pulse Velocity ◽  
Non Destructive Testing ◽  
Testing Methods ◽  
Destructive Testing ◽  
Impact Echo ◽  
Maintenance And Repair ◽  
Non Destructive ◽  
Impact Echo Method

Recently, the interest in maintenance and repair of existing concrete structures have increased, and it is typical to use non-destructive testing methods such as rebound hardness test or ultrasonic pulse velocity method to execute maintenance and repair of structures efficiently. Many non-destructive testing methods are being used in practice such as at construction sites, but verification for site applications are quite inadequate. Thus, this study intends to evaluate the applicability of Impact Echo Method which is one of the non-destructive testing methods using stress wave. Total of four specimens were planned and produced. The thickness of concrete slab members was estimated using I.E(OLSENs Freedom Data PC with Win.TFS Software Version 2.5.2). The estimated materials of concrete members by IE was found to be IE-1 specimen 178mm, IE-2 specimen 197mm, IE-3 specimen 191mm, and IE-4 specimen 263mm, and the error rate was found to be 4.22%~18.67% (average 9.6%), showing that they are relatively well in agreement. In this study, the experiments were executed with the objective of estimating the thickness of concrete slab members using Impact Echo Method. Through this study, the applicability of thickness estimation in concrete slab members using impact echo method could be confirmed.

scholarly journals Evaluation of the degree of degradation using the impact-echo method in civil engineering

2016 ◽  
Vol 50 (6) ◽  
pp. 879-884
Author(s):  
Daniela Štefková ◽  
Kristýna Timčaková ◽  
Libor Topolá ◽  
Petr Cikrle
Keyword(s):  
Civil Engineering ◽  
Impact Echo ◽  
The Impact ◽  
Impact Echo Method ◽  
Degree Of Degradation

Application of impact-echo method for rockbolt length detection

2022 ◽  
Vol 316 ◽  
pp. 125904
Author(s):  
Yu-Feng Lin ◽  
Jhih-Wei Ye ◽  
Chia-Ming Lo
Keyword(s):  
Impact Echo ◽  
Impact Echo Method

scholarly journals Experimental Research and Numerical Simulation on Grouting Quality of Shield Tunnel Based on Impact Echo Method

2016 ◽  
Vol 2016 ◽  
pp. 1-10
Author(s):  
Fei Yao ◽  
Guangyu Chen ◽  
Jianhong Su
Keyword(s):  
Numerical Simulation ◽  
Finite Element ◽  
Working Conditions ◽  
Acoustic Impedance ◽  
Shield Tunnel ◽  
Test Results ◽  
Impact Echo ◽  
Simulation Results ◽  
The Impact ◽  
Impact Echo Method

To identify shield grouting quality based on impact echo method, an impact echo test of segment-grouting (SG) test piece was carried out to explore effect of acoustic impedance of grouting layers and grouting defects on impact echo law. A finite element numerical simulation on the impact echo process was implemented. Test results and simulation results were compared. Results demonstrated that, under some working conditions, finite element simulation results and test results both agree with theoretical values. The acoustic impedance ratio of SG material influenced the echo characteristics significantly. But thickness frequency could not be detected under some working conditions because the reflected energy is weak. Frequency feature under grouting defects was more complicated than that under no grouting defects.

Internal Imperfection Detection of Concrete Composite Component Using Ultrasonic Method and Impact-Echo Method

2013 ◽  
Vol 639-640 ◽  
pp. 1046-1050 ◽  
Author(s):  
Yun Feng Xiao ◽  
Da Hai Zhang ◽  
Li Liu
Keyword(s):  
Detection Method ◽  
Ultrasonic Method ◽  
Test Method ◽  
New Method ◽  
Masonry Structures ◽  
Composite Component ◽  
Impact Echo ◽  
The Impact ◽  
Impact Echo Method ◽  
Concrete Component

The ultrasonic method and the impact-echo method are two kinds of nondestructive test method (NDT), which are widely used, not only for concrete component, but for masonry structures. However, it is hard to detect the flaw in the concrete composite component if only with one kind of detection method. In this study, the principle of ultrasonic method and impact-echo method are outlined. And an attempt of a new method is taken, that Ultrasonic method together with Impact-echo method is used in detecting the deflection in Concrete Composite Component. It is proved that the result of this new method is more accurate and stable than that of only using ultrasonic method or impact-echo method. Introduction Introduction

Assessing frost resistance of concrete by impact-echo method

2015 ◽  
Vol 67 (6) ◽  
pp. 317-324 ◽  
Author(s):  
Xiaobin Lu ◽  
Fengling Ma ◽  
Allyn Luke ◽  
Ronglu Wang
Keyword(s):  
Frost Resistance ◽  
Impact Echo ◽  
Impact Echo Method
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