37 Result(s)
within
Acoustics
Characterization and Evaluation of Materials
**u-**u Zhang
Conference Paper
Physics
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Chapter and Conference Paper
Experimental Research on Acoustic Emission Monitoring of Dynamic Corrosion on a Simulated Tank Floor
In this work, an acoustic emission monitoring experiment of a tank floor plate was conducted in a laboratory simulation of practical production conditions. In addition to analysis of the corrosion mechanism, e...
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Chapter and Conference Paper
Feature Extraction of Corrosion Acoustic Emission Signals Based on Genetic-Matching Pursuit Algorithm
The acoustic emission (AE) detecting is an effective online tank bottom corrosion monitoring method. It is easy to discover early corrosion. Aiming at random unstable features of AE signals from tank bottom co...
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Chapter and Conference Paper
Separation of the Elastic and Plastic Wave in Electromagnetically Induced Acoustic Emission Testing
In this chapter, a developed electromagnetically induced acoustic emission technique (EMAE) which can be used for nondestructive flaw detection is introduced. This method is different from traditional acoustic...
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Chapter and Conference Paper
Deflection on Hit-Count Curves in Acoustic Emission Could Reflect the Damage Extent of C/C Composite Material Structure
Counts of each hit are related to the damage extent of C/C composite material structure. The relative curves of Hit and Count as well as Hit and Energy of AE, attained from static load procedure of C/C composi...
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Chapter and Conference Paper
Calibration Principle for Acoustic Emission Sensor Sensitivity
Acoustic emission sensors are the most important part of an acoustic emission detection system, which directly determines the validity and accuracy of the detection result. In order to improve the reliability ...
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Chapter and Conference Paper
Three-Dimensional Finite Element Simulation of Signal Detection Transducer for Electromagnetically Induced Acoustic Emission
Electromagnetically induced acoustic emission technique is a new nondestructive testing technology. By electromagnetically induced high density eddy current pulse, we can get a strong signal which can be used ...
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Chapter and Conference Paper
Research on Acoustic Emission Attenuation Characteristics and Experiments on Composite Cylinders
The object of our research is the 50L carbon fiber composite cylinder. Using the acoustic attenuation theory formula of a fixed emission frequency and a non-fixed emission frequency, we calculated the acoustic...
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Chapter and Conference Paper
Numerical Simulation of Wave-Guiding Properties and Optimization Design for Wave-Guiding Rod
Wave-guiding rod is an auxiliary detection tool of acoustic emission (AE) testing under special conditions and plays the role of transmitting AE signals. But the AE signals propagating in the wave-guiding rod ...
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Chapter and Conference Paper
Intelligent Evaluation Method of Tank Bottom Corrosion Status Based on Improved BP Artificial Neural Network
According to the acoustic emission information and the appearance inspection information of tank bottom online testing, the external factors associated with tank bottom corrosion status are confirmed. Applying...
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Chapter and Conference Paper
Application of Acoustic Emission Technology for Rolling Bearing Condition Monitoring on Passenger Ropeway
As one of the most important parts on the passenger ropeway, the rolling bearing is difficult to be disassembled for in-service inspection. Online monitoring of rolling bearing on passenger ropeway could be ca...
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Chapter and Conference Paper
Research Based on the Acoustic Emission of Wind Power Tower Drum Dynamic Monitoring Technology
Wind power tower drum is one of the key components of the wind power equipment. Whether the wind tower drum performs safety directly affects the efficiency, life, and performance of wind power equipment. Wind ...
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Chapter and Conference Paper
Development of High-Speed Wi-Fi Wireless Acoustic Emission System
In order to satisfy the requirement of AE testing and monitoring for pipeline, large pressure vessel, large crane and amusement device, a new 16-channel high-speed Wi-Fi wireless acoustic emission system based...
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Chapter and Conference Paper
Statistical Analysis of Events of Random Damage in Assessing Fracture Process in Paper Sheets Under Tensile Load
This investigation presents an experimental, computational, and data-enabled method to study the statistics of these ERD in the evolution of fracture process in paper sheets, which holds the key to making accu...
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Chapter and Conference Paper
Research on the Acoustic Emission and Metal Magnetic Memory Characteristics of the Crane Box Beam During Destructive Testing
In order to achieve rapid detection and localization of defects in a crane box beam, we used acoustic emission technology (AET) and metal magnetic memory technology (MMMT) to obtain the propagating characteris...
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Chapter and Conference Paper
Acoustic Emission Behavior of Titanium During Tensile Deformation
Application of the acoustic emission (AE) technique allows investigating collective processes of plastic deformation at different time scales spreading from microseconds up to the duration of the mechanical te...
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Chapter and Conference Paper
Material Parameters Determining the Band Gaps of Solid-Solid Phononic Crystals
Material parameters directly determining band gaps for general threedimensional phononic crystals are derived from the basic wave equations. These parameters include the mass density ratio, shear modulus ratio...
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Chapter and Conference Paper
Application of Microacoustical Technique to Study Elastic Properties and Microstructure of New Generation of Bulk Metallic Glasses
Elastic properties of bulk metallic glass (BMG) Pd39Ni10Cu10P21 have been studied basing on sonic velocity data analysis. Different states of the Pd39Ni 10Cu 1 oP21 system (glassy state, super-cooled liquid (SCL)...
