The Early Detection of Fatigue Damage by Exoelectron Emission and Acoustic Emission

2009 ◽  
pp. 143-143-15
Author(s):  
JF Moore ◽  
S Tsang
Keyword(s):  
Acoustic Emission ◽  
Early Detection ◽  
Fatigue Damage ◽  
Exoelectron Emission

Evaluation of Fatigue Damage in Reinforced Concrete Slab by Acoustic Emission.

1999 ◽  
pp. 251-259
Author(s):  
Shigenori YUYAMA ◽  
Zhang-Wang LI ◽  
Takeshi TOMOKIYO ◽  
Masaru YOSHIZAWA ◽  
Taketo UOMOTO
Keyword(s):  
Acoustic Emission ◽  
Reinforced Concrete ◽  
Fatigue Damage ◽  
Concrete Slab ◽  
Reinforced Concrete Slab

scholarly journals Characterization of Fatigue Damage in 304L Steel by an Acoustic Emission Method

2013 ◽  
Vol 66 ◽  
pp. 651-660 ◽  
Author(s):  
A. Ould Amer ◽  
A.-L. Gloanec ◽  
S. Courtin ◽  
C. Touze
Keyword(s):  
Acoustic Emission ◽  
Fatigue Damage ◽  
Acoustic Emission Method ◽  
Emission Method ◽  
304L Steel

scholarly journals Analysis of Damage Evolution in Concrete under Fatigue Loading by Acoustic Emission and Ultrasonic Testing

Materials ◽  
2022 ◽  
Vol 15 (1) ◽  
pp. 341
Author(s):  
Marc Thiele ◽  
Stephan Pirskawetz
Keyword(s):  
Acoustic Emission ◽  
Elastic Modulus ◽  
Cyclic Loading ◽  
Fatigue Damage ◽  
Fatigue Loading ◽  
Measurement Methods ◽  
Material Structure ◽  
Fatigue Process ◽  
Acoustic Methods ◽  
Normal Strength

The fatigue process of concrete under compressive cyclic loading is still not completely explored. The corresponding damage processes within the material structure are especially not entirely investigated. The application of acoustic measurement methods enables a better insight into the processes of the fatigue in concrete. Normal strength concrete was investigated under compressive cyclic loading with regard to the fatigue process by using acoustic methods in combination with other nondestructive measurement methods. Acoustic emission and ultrasonic signal measurements were applied together with measurements of strains, elastic modulus, and static strength. It was possible to determine the anisotropic character of the fatigue damage caused by uniaxial loading based on the ultrasonic measurements. Furthermore, it was observed that the fatigue damage seems to consist not exclusively of load parallel oriented crack structures. Rather, crack structures perpendicular to the load as well as local compacting are likely components of the fatigue damage. Additionally, the ultrasonic velocity appears to be a good indicator for fatigue damage beside the elastic modulus. It can be concluded that acoustic methods allow an observation of the fatigue process in concrete and a better understanding, especially in combination with further measurement methods.

scholarly journals Acoustic Emission Wavelet Analysis of Filament Wound Composite Tube Fatigue Damage Process

2015 ◽  
Vol 9 (1) ◽  
pp. 214-219 ◽  
Author(s):  
Su Hua ◽  
Chang Cheng
Keyword(s):  
Acoustic Emission ◽  
Wavelet Transform ◽  
Fatigue Damage ◽  
Frequency Band ◽  
Low Frequency ◽  
High Signal ◽  
Wave Form ◽  
Radial Compression ◽  
Time Frequency ◽  
Emission Signal

This paper performed a radial compression fatigue test on glass fiber winding composite tubes, collected acoustic emission signals at different fatigue damages stages, used time frequency analysis techniques for modern wavelet transform, and analyzed the wave form and frequency characteristics of fatigue damaged acoustic emission signals. Three main frequency bands of acoustic emission signal had been identified: 80-160 kHz (low frequency band), 160-300 kHz (middle frequency band), and over 300kHz (high frequency band), corresponding to the three basic damage modes: the fragmentation of matrix resin, the layered damage of fiber and matrix, and the fracture of cellosilk respectively. The usage of wavelet transform enabled the separation of fatigue damaged acoustic emission signals from interference wave, and the access to characteristics of high signal-noise-ratio fatigue damage.

scholarly journals Characterisation of fatigue damage in composites using an Acoustic Emission Parameter Correction Technique

2018 ◽  
Vol 151 ◽  
pp. 237-244 ◽  
Author(s):  
Safaa Kh Al-Jumaili ◽  
Mark J. Eaton ◽  
Karen M. Holford ◽  
Matthew R. Pearson ◽  
Davide Crivelli ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Fatigue Damage ◽  
Correction Technique ◽  
Emission Parameter ◽  
Acoustic Emission Parameter ◽  
Parameter Correction
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