Acoustic emission detection of fatigue cracks in wind turbine blades based on blind deconvolution separation

2016 ◽  
Vol 40 (6) ◽  
pp. 959-970 ◽  
Author(s):  
Z Bo ◽  
Z Yanan ◽  
C Changzheng
Keyword(s):  
Acoustic Emission ◽  
Wind Turbine ◽  
Blind Deconvolution ◽  
Fatigue Cracks ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Emission Detection

Acoustic Emission for Structural Integrity Assessment of Wind Turbine Blades

2014 ◽  
pp. 369-382 ◽  
Author(s):  
Nikolaos K. Tsopelas ◽  
Dimitrios G. Papasalouros ◽  
Athanasios A. Anastasopoulos ◽  
Dimitrios A. Kourousis ◽  
Jason W. Dong
Keyword(s):  
Acoustic Emission ◽  
Wind Turbine ◽  
Structural Integrity ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Integrity Assessment

Acoustic Emission Monitoring of Small Wind Turbine Blades

2002 ◽  
Author(s):  
P. A. Joosse ◽  
M. J. Blanch ◽  
A. G. Dutton ◽  
D. A. Kouroussis ◽  
T. P. Philippidis ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Wind Turbine ◽  
Fibre Composite ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Static Test ◽  
Damage Propagation ◽  
Test Methodology ◽  
Certification Procedure ◽  
Damage Processes

Wind turbine blade certification tests, comprising a static test, a fatigue test, and finally a residual strength test, often involve sudden audible cracking sounds from somewhere within the blade, without the operators being able to locate the noise source, or to determine whether damage (minor or major) has occurred. A current EC-funded research project is looking at the possibility of using acoustic emission (AE) monitoring during testing of fibre composite blades to detect such events and assess the blade condition. AE can both locate and characterise damage processes in blades, starting with non-audible signals occurring due to damage propagation at relatively low loads. The test methodology is discussed in the context of the blade certification procedure and results are presented from a series of static and fatigue blade tests to failure in the laboratory. Inferences are drawn about small differences in the manufacture of the nominally identical blades and conclusions are presented for the application of the methodology.

Health monitoring of operating wind turbine blades with acoustic emission

2012 ◽  
pp. 347-352 ◽  
Author(s):  
N Tsopelas ◽  
D Kourousis ◽  
I Ladis ◽  
A Anastasopoulos ◽  
D Lekou ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Wind Turbine ◽  
Health Monitoring ◽  
Turbine Blades ◽  
Wind Turbine Blades

Acoustic Emission Monitoring of Small Wind Turbine Blades

2002 ◽  
Vol 124 (4) ◽  
pp. 446-454 ◽  
Author(s):  
P. A. Joosse ◽  
M. J. Blanch ◽  
A. G. Dutton ◽  
D. A. Kouroussis ◽  
T. P. Philippidis ◽  
...  
Keyword(s):  
Acoustic Emission ◽  
Wind Turbine ◽  
Fiber Composite ◽  
Turbine Blades ◽  
Wind Turbine Blades ◽  
Acoustic Emission Monitoring ◽  
Test Methodology ◽  
Emission Monitoring ◽  
Certification Procedure ◽  
Composite Blades

Wind turbine blade certification tests often generate sudden audible cracking sounds from somewhere within the blade, without the operators being able to locate the noise source or to evaluate the existence or the extent of any damage. It would be beneficial to be able to detect any damage incurred by the blade, whether it is accompanied by audible noise or not. The current project, named AEGIS, is looking at the possibility of using acoustic emission monitoring during testing of fiber composite blades to detect the source of damage events and assess the blade condition. The test methodology is discussed in the context of the blade certification procedure and results are presented from a series of static and fatigue blade tests to failure in the laboratory.

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