Energy dissipation capacity of fibre reinforced concrete under biaxial tension–compression load. Part II: Determination of the fracture process zone with the acoustic emission technique

2015 ◽  
Vol 62 ◽  
pp. 187-194 ◽  
Author(s):  
Elmar K. Tschegg ◽  
Andreas Schneemayer ◽  
Ildiko Merta ◽  
Klaus A. Rieder
Keyword(s):  
Acoustic Emission ◽  
Fracture Process ◽  
Fracture Process Zone ◽  
Biaxial Tension ◽  
Process Zone ◽  
Fibre Reinforced Concrete ◽  
Acoustic Emission Technique ◽  
Compression Load ◽  
Energy Dissipation Capacity

Applications of Acoustic Emission Technique Associated with the Fracture Process Zone in Concrete Beam – A Review

2012 ◽  
Vol 626 ◽  
pp. 147-151 ◽  
Author(s):  
Siti Ramziah Basri ◽  
Norazura Muhamad Bunnori ◽  
Sakhiah Abdul Kudus ◽  
Shahidan Shahiron ◽  
Mohd Nazli Md. Jamil ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fracture Process ◽  
Fracture Process Zone ◽  
Concrete Beam ◽  
Process Zone ◽  
Failure Mechanisms ◽  
Aggregate Size ◽  
Plain Concrete ◽  
Bending Test ◽  
Acoustic Emission Technique

This paper summarized the recent development within the application of acoustic emission technique in the formation of fracture process zone and the AE energy released during the fracture process in concrete beam specimens. AE technique is a non destructive technique which is a useful tool to study the energy released during the different failure mechanisms in different types of materials and fracture process is one of the failure mechanisms in concrete. Most of the researchers were applied three point bending test on plain concrete in order to determine the facture process zone of the concrete and some of them were used numerical modeling to verify their results. The results between AE data and experimental in different parameters such as specimens size and aggregate size are normally compared. As a conclusion, AE technique is a very useful tool to determine the fracture process zone in concrete.

scholarly journals Determination of some characteristic fracture of concrete of notched beam in bending test

2020 ◽  
Vol 61 (HTCS6) ◽  
pp. 96-101
Author(s):  
Bui Truong Son ◽  
Pham Duc Tho ◽  
Nguyen Thi Nu ◽  
Tran The Truyen ◽  
Tran Nam Hung ◽  
...  
Keyword(s):  
Stress Intensity ◽  
Critical Stress ◽  
Fracture Process ◽  
Fracture Process Zone ◽  
Process Zone ◽  
Bending Test ◽  
Intensity Factors ◽  
Simulation Results ◽  
Compression Resistance

This paper presents the identification some principal fracture parameters of concretes by experiment and simulation on notched beam in bending. The comparison between experimental and simulation results allows to determinate the Critical stress intensity factors KIC, fracture energy Gf and characteristic lengths of fracture process zone (FPZ) lch of 6 class of concrete with the compression resistance varying from 20 MPa to 50 MPa. These are important parameter in the model for predicting the timelife of concrete structure exposed in coastal area.

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