Application of wavelet transform on modal acoustic emission source location in thin plates with one sensor

Jiao, Jingpin; He, Cunfu; Wu, Bin; Ren-yuan, Fei; Wang, Xiuyan

doi:10.1016/j.ijpvp.2004.03.009

Cited by 98 publications

(65 citation statements)

References 9 publications

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“…Most recently, an MAE-based source mapping method was developed [Jiao et al, 2006;Jiao et al, 2008] and the founders claimed that it produces improved accuracy. Furthermore, this technique makes single sensor linear source location detection possible (Jiao et al, 2004;Oskouei & Ahmadi, 2008).…”

Section: Introductionmentioning

confidence: 99%

An Investigation of Acoustic Emission Signal Attenuation for Monitoring of Progressive Failure in Fiberglass Reinforced Composite Laminates

Hafizi¹,

Epaarachchi²,

Lau³

2013

Int J Automot Mech Eng

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Glass fiber reinforced polymer (GFRP) laminates have a high damping characteristic which can retard ultra-high frequency guided wave signals from propagating along the plate. Owing to this, the identification of an effective area for sensor location is essential. Appropriate signal processing, including wavelet analysis was done, in order to observe the details of an acoustic emission (AE) signal which was emitted at a distance from it source. This study reveals that it is necessary to consider the near field and far field effects of AE signal attenuation, in particular, to determine a composite's micro failure characterization. Consequently, this attenuation behavior was used to develop the non-velocity based source mapping to monitor the progressive failure in composite laminates. This paper details the outcomes of the signal energy attenuation method with an improved algorithm for progressive failure monitoring in fiberglass reinforced composite laminates and the 'effective length' for better AE detection.

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Section: Introductionmentioning

confidence: 99%

An Investigation of Acoustic Emission Signal Attenuation for Monitoring of Progressive Failure in Fiberglass Reinforced Composite Laminates

Hafizi¹,

Epaarachchi²,

Lau³

2013

Int J Automot Mech Eng

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“…The study was carried out as a function of the signal-to-noise (S/N) ratio. Jiao et al (2004) applied the theory of the wavelet transform and modal acoustic emission to analyse the propagation of elastic waves in thin plates. Experimentally they have shown that by using Gabor Wavelet, the WT can be applied to the AE signal and using the peak of the magnitude of the wavelet transform, the arrival times of the different modes can be determined.…”

Section: Source Localisation By Signal Processingmentioning

confidence: 99%

Structural damage localisation by acoustic emission technique: A state of the art review

Sengupta

Datta

Topdar

2015

Lat. Am. j. solids struct.

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Structural damages are often associated with under-performance of an engineering system. Hence localisation of such damages, followed by remedial measures, is the key to ensure proper functioning of the structures during their design lives. Acoustic emission (AE) technique is one of the effective non destructive evaluation (NDE) techniques for damage localisation. The present study makes an effort to review the existing literature on this technique under a few broad categories and discuss chronological advancements in each such category. The advantages and drawbacks of each method are deliberated and further scopes of research are pointed out.

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“…Most of the location methods are based on evaluation of time difference between wave arrivals to different sensors. In the procedure of locating AE sources is essential to determine the arrival times of AE waves at different sensors (Jiao et al, 2004). In cases when time of arrivals is difficult or impractical to detect, other methods are applied.…”

Section: Ae Sources Locationmentioning

confidence: 99%

“…Different authors demonstrated, that it is possible to extract accurately the arrival times of AE signals with the results of WT (Grosse et al, 2002;Hamstad, 2004;Hamstad et al, 2003;Jeong et al, 2000;Jiao et al, 2004). More important information is possible to obtain from peak stress.…”

Section: Ae Sources Locationmentioning

confidence: 99%

“…The separation of these modes in sensors can make possible to extract accurate information about the source that produces the wave. According to Jiao (Jiao et al, 2004) AE signals are in fact dispersive elastic waves. The AE sources are usually manufacturing defects, minor cuts resulting from a defective welding, delamination, displacements, cracks, crevices and others.…”

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confidence: 99%

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Acoustic Emission Studies in Hip Arthroplasty – Peak Stress Impact In Vitro Cemented Prosthesis

Gueiral¹,

Nogueira²

2012

Recent Advances in Arthroplasty

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Engineering has a very important role in the development of non-destructive monitoring of orthopaedical systems allowing the evaluation of its integrity. Sir John Charnley revolutionized the field of joint arthroplasty in the 1960s with the development of the total hip replacement. He replaced the diseased hip joint with a steel femoral component and a plastic acetabular socket cup combination, both fixed into the bone using a self-curing acrylic cement, polymethylmethacrylate (PMMA) (Browne et al, 2005). That way, he has restored some of the most problematic joints in the human body. The placement of the metal implant in the channel open in the femoral bone without using cement or by mechanical attack, called a non cemented arthroplasty, came into use in an effort to solve the problem. A study about prostheses reviews, between 1979 and 2005, show that's were higher in non-cemented prosthesis, leading to studies on new forms of interface bone/metal. The growth of cemented arthroplasties has been observed since 2005. By Ramos (Ramos et al, 2005), cemented arthroplasty is one of the most successful surgical techniques in orthopaedics. However, the cemented prosthesis has a tendency to fray during the time of their life due to stress and fatigue of the cement material leading to it cracking. The growing importance of different Total Hip Arthroplasty (THA) studies is due to increased life expectancy of the population and its social and clinical relevance. Interdisciplinary THA studies such as: biomechanics (Bergmann et al, 2001;Fonseca et al, 2010;Nabais, 2006;Ramos et al, 2005; Stolk et al, 2006;Teixeira et al, 2008; Vieira, 2004); finite element analysis (Bachtar et al, 2006;Nizam Ahmad et al, 2006;Ridzwan et al, 2006) and acoustic emission monitoring (Browne et al, 2005;Cristofolini et al, 2003;Davies et al, 1996;Franke et al, 2004;Gueiral, 2008;Qi et al, 2005;Qi, 2000;Rowland et al, 2004) have been published. Research has been done to improve the performance of artificial implants, addressing factors such as geometry, materials, cements, and other surgical techniques that directly or indirectly, might influence the performance and success of cemented arthroplasty. Although the lifetime of a THA is between 10 and 15 years, there are factors that lead to loss of prosthesis such as the separation of the femoral prosthesis due to the splitting of connection between the implant/cement and cement/bone. The human body responds through its immune system causing inflammation and pain in osseous structure, which in most cases leads to the replacement of the prosthesis.

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Application of wavelet transform on modal acoustic emission source location in thin plates with one sensor

Cited by 98 publications

References 9 publications

An Investigation of Acoustic Emission Signal Attenuation for Monitoring of Progressive Failure in Fiberglass Reinforced Composite Laminates

An Investigation of Acoustic Emission Signal Attenuation for Monitoring of Progressive Failure in Fiberglass Reinforced Composite Laminates

Structural damage localisation by acoustic emission technique: A state of the art review

Acoustic Emission Studies in Hip Arthroplasty – Peak Stress Impact In Vitro Cemented Prosthesis

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