scholarly journals APLICATION OF ACOUSTIC EMISSION FOR MONITORING EROSIVE WEAR TESTS OF LOW CARBON STEEL BY SOLID PARTICLES

2014 ◽  
Author(s):  
Gustavo Borges Tiboni ◽  
Carlos Henrique da Silva
Keyword(s):  
Acoustic Emission ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Erosive Wear ◽  
Solid Particles ◽  
Low Carbon ◽  
Wear Tests

Feature Extraction of the Acoustic Emission Signals of Low Carbon Steel Pitting Corrosion Based on Independent Component Analysis and Wavelet Transform

2013 ◽  
Vol 373-375 ◽  
pp. 677-680
Author(s):  
Wei Li ◽  
Yu Li Gong ◽  
Yang Yu
Keyword(s):  
Acoustic Emission ◽  
Carbon Steel ◽  
Independent Component Analysis ◽  
Pitting Corrosion ◽  
Wavelet Transformation ◽  
Low Carbon Steel ◽  
Component Analysis ◽  
Independent Component ◽  
Low Carbon ◽  
Ae Signals

Based on the characteristics of the acoustic emission (AE) signals from low carbon steel pitting corrosion, a new extraction method was proposed with wavelet transformation and independent component analysis. The experiment result shows that the new method can overcome the influence induced by the uncertainty of the independent source of low carbon steel pitting corrosion and good extraction result can be achieved.

Detection and Identification of Different Metal Materials with Same Damage of Stretching Based on Acoustic Emission in Audible Domain

2013 ◽  
Vol 419 ◽  
pp. 321-327
Author(s):  
Yun Tao Lu ◽  
Zong Bai Deng ◽  
Ya Yuan ◽  
Qing Xu ◽  
Can Zhang
Keyword(s):  
Acoustic Emission ◽  
Carbon Steel ◽  
Low Carbon Steel ◽  
Tensile Tests ◽  
Parameter Analysis ◽  
Metallic Materials ◽  
Low Carbon ◽  
Detection And Identification ◽  
Calculation Results ◽  
Metal Materials

Analysis of metallic materials damage signal is effective for studying strength failure.Domestic and foreignscholars do much workbased on acoustic emission due to its real-time detection. Most researches are in ultrasonic region, few in audible domain. In this paper, taking low-carbon steel and cast iron as an example, we collected acoustic emission signals during tensile tests. Thenestablishassociated diagrams of processed signals, with multivariable parameter analysis used for eigenvalue processing. After normalizing data,wefigured out ranges of synthetic parameters. The experiment and calculation results show that eigenvalue of every low-carbon steel in one certain event is greater than cast iron’s. As a result,synthetic parameters canmake significant effect in detecting and identifying different metal materials

Effect of Ceramic Particle Reinforcement on the Erosion Resistance of Thermally Sprayed De-Icing Systems

2021 ◽  
Author(s):  
Shahed Taghian Dehaghani ◽  
André McDonald ◽  
Ali Dolatabadi
Keyword(s):  
Metal Matrix ◽  
Turbine Blades ◽  
Matrix Material ◽  
Low Carbon Steel ◽  
Erosive Wear ◽  
Cold Spraying ◽  
Solid Particles ◽  
Flame Spraying ◽  
Low Carbon ◽  
Wear Rates

Abstract Developing effective heating systems to prevent ice accretion on the surface of wind turbine blades and aircraft wings is of great significance for extreme cold environments. However, due to high velocity impingement of water droplets and solid particles on the surface of these components, an appreciable degree of surface material degradation may occur. In this study, nickel-chromium-aluminum-yttrium (NiCrAlY) was chosen as a metal matrix material for a coating-based heating system. Pure ceramic powders, namely, alumina and titania, and a cermet powder, tungsten carbide-cobalt (WC-12Co), were mechanically admixed with NiCrAlY powder and deposited to fabricate reinforced metal matrix composite (MMC) coatings. The powders were deposited on cylindrical low carbon steel bars by using flame spraying. The specimens were placed in a wind tunnel to conduct a comparative investigation of their erosive wear resistance under water droplet impact. A cold spraying unit was used for solid particle impact erosion tests. The erosive wear rates were quantified by measuring mass loss. The experimentally obtained results showed noticeably lower wear rate in NiCrAlY-WC-12Co and NiCrAlY-titania coatings compared to the other coatings. The results suggest that certain MMC coatings could be effectively employed to decrease the erosion rate of coating-based heating elements.

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