Acoustic emission analysis of cyclically loaded superelastic shape memory alloy fiber reinforced mortar beams

Sherif, Muhammad M.; Tanks, Jonathon; Ozbulut, Osman E.

doi:10.1016/j.cemconres.2017.02.021

Cited by 41 publications

(11 citation statements)

References 39 publications

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“…Choi et al (2015Choi et al ( , 2017 concluded that the addition of SMA fibre in concrete improved the flexural strength and the crack-closing capacity of concrete. Sherif et al (2017) validated that crack recovery ratio was increased after adding SMA fibre, to 65% and 68% at 0.5% and 1.0% fibre volume ratios. Khakimova et al (2015) suggested the optimum 1:1 volume ratio between steel and SMA fibres for both cracking recovery and bending resistance in SMA-steelfibre-reinforced concrete.…”

Section: Introductionmentioning

confidence: 58%

Flexural and toughness properties of NiTi shape memory alloy, polypropylene and steel fibres in self-compacting concrete

Aslani

Liu

Wang

2019

Journal of Intelligent Material Systems and Structures

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Self-compacting concrete presents good workability to fill complicated forms without mechanical vibrations. This concrete is often reinforced with fibres to improve the strength and toughness. This study investigated the use of nickel -titanium (NiTi) shape memory alloy fibres in comparison with polypropylene and steel fibres in self-compacting concrete. The performances of the fresh fibre–reinforced self-compacting concrete are explored by slump flow and J-ring experiments. Meanwhile, the static and cyclic flexural tests are conducted to estimate the bending resistance strength performance, residual deformation and recovering capacity of shape memory alloy, polypropylene and steel fibre–reinforced self-compacting concrete. Moreover, the flexural toughness of the shape memory alloy, polypropylene and steel fibre–reinforced self-compacting concrete is calculated using four different codes. The shape memory alloy fibre–reinforced self-compacting concrete with 0.75% volume fraction presents the largest flexural strength, re-centering ability and toughness in comparison with polypropylene and steel fibre–reinforced self-compacting concretes. The experimental results demonstrated the beneficial influence of the shape memory and superelastic properties of NiTi in postponing initial crack formation and restricting the crack widths.

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Section: Introductionmentioning

confidence: 58%

Flexural and toughness properties of NiTi shape memory alloy, polypropylene and steel fibres in self-compacting concrete

Aslani

Liu

Wang

2019

Journal of Intelligent Material Systems and Structures

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“…With advantages such as sensitivity to geometry, integrity, and sensitivity to dynamic defects, AE monitoring techniques have been applied to monitor different types of corrosion. (30)(31)(32) However, most of the research is focused on the characteristics of AE sources. To the best of our knowledge, no papers or reports on the specific relationship between crack propagation and AE signals have been published.…”

Section: Introductionmentioning

confidence: 99%

Characteristic of Acoustic Emission Signal from Stress Corrosion Cracking in Low-Carbon Nitrogen-Enhanced Stainless Steel

2017

Sensors and Materials

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The problem of stress corrosion cracking (SCC), which causes sudden failure of metals subjected to stress in a high-temperature, high-pressure water environment, is studied. Acoustic emission (AE) monitoring is a promising method for detecting the initiation and propagation of SCC. In this study, pencil-lead breaks are used as AE signal sources to first validate the parameters for the verification of the finite element modeling of microcracking. Then, a simplified fracture propagation model of low-carbon nitrogen-enhanced (316LN) stainless steel is established on the basis of moment tensor theory. Finally, the inner connection between the energy release rate of the AE source and the morphological aspect of crack formation is analyzed. The results of modal analysis show that the amount of energy released by the growing crack is linearly proportional to crack depth. Moreover, their frequency characteristics are almost unchanged from the results of analysis by fast Fourier transform. Therefore, SCC initiation and propagation in 316LN stainless steel can be evaluated by this detection method. Moreover, this analysis method based on the energy release rate of the AE source can also be extended to almost all solid materials and structural crack detection.

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“…Cyclic loading and unloading tests with acoustic emission monitoring are an effective approach to quantitatively measuring deformation and damage characteristics of various materials [11][12][13][14][15][16][17][18][19][20]. Sherif et al [12] captured and analyzed AE signals to characterize the crack formation and crack width development in the cyclic loading processes.…”

Section: Introductionmentioning

confidence: 99%

“…Sherif et al [12] captured and analyzed AE signals to characterize the crack formation and crack width development in the cyclic loading processes. AE method had been utilized to capture the fatigue crack growth of concrete mortar under cyclic contact loading [14].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Mechanical Behavior of Dry and Water Saturated Igneous Rock with Acoustic Emission Monitoring

Guo

Feng

et al. 2018

Shock and Vibration

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The uniaxial cyclic loading tests have been conducted to study the mechanical behavior of dry and water saturated igneous rock with acoustic emission (AE) monitoring. The igneous rock samples are dried, naturally immersed, and boiled to get specimens with different water contents for the testing. The mineral compositions and the microstructures of the dry and water saturated igneous rock are also presented. The dry specimens present higher strength, fewer strains, and rapid increase of AE count subjected to the cyclic loading, which reflects the hard and brittle behavior and strong burst proneness of igneous rock. The water saturated specimens have lower peak strength, more accumulated strains, and increase of AE count during the cyclic loading. The damage of the igneous rocks with different water contents has been identified by the Felicity Ratio Analysis. The cyclic loading and unloading increase the dislocation between the mineral aggregates and the water-rock interactions further break the adhesion of the clay minerals, which jointly promote the inner damage of the igneous rock. The results suggest that the groundwater can reduce the burst proneness of the igneous rock but increase the potential support failure of the surrounding rock in igneous invading area. In addition, the results inspire the fact that the water injection method is feasible for softening the igneous rock and for preventing the dynamic disasters within the roadways and working faces located in the igneous intrusion area.

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Acoustic emission analysis of cyclically loaded superelastic shape memory alloy fiber reinforced mortar beams

Cited by 41 publications

References 39 publications

Flexural and toughness properties of NiTi shape memory alloy, polypropylene and steel fibres in self-compacting concrete

Flexural and toughness properties of NiTi shape memory alloy, polypropylene and steel fibres in self-compacting concrete

Characteristic of Acoustic Emission Signal from Stress Corrosion Cracking in Low-Carbon Nitrogen-Enhanced Stainless Steel

Dynamic Mechanical Behavior of Dry and Water Saturated Igneous Rock with Acoustic Emission Monitoring

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