Quantification of Acoustic Emission from Crack Growth in Plate Structures

Wilcox, Paul D.; Lee, Chee Kin; Scholey, Jonathan J.; Wisnom, Michael R; Friswell, Michael I.; Drinkwater, Bruce W.

doi:10.1063/1.2718142

Cited by 1 publication

(2 citation statements)

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“…This circumstance should be taken into account when processing primary AE data. Wilcox (Wilcox et al, 2007) presented a modelling of the acoustic emission process in the crack growth in plate structures. The modelling framework referred as Quantification of Acoustic Emission Forward (QAE-Forward), is a forward model of the AE process from source to detection.…”

Section: Ae Process Modellingmentioning

confidence: 99%

“…Several models of acoustic emission process, taking into account the application and the materials, are referred following. Source modelling (Hora, 2010); physicomathematical model of generation of AE (Belikov, 2008;2010); crack grouth finite element modelling in plate structures (Wilcox et al, 2007); micromechanical model of microcrack formation in heterogeneous materials (Nosov et al, 2003) and AE waveforms modelling in thin plates (Prosser et al, 1998).…”

Section: Ae Process Modellingmentioning

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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Section: Ae Process Modellingmentioning

confidence: 99%