Acoustic emission technique for fracture analysis in wood materials

Lamy, Fabrice; Takarli, Mokhfi; Angellier, Nicolas; Dubois, Frédéric; Pop, Octavian

doi:10.1007/s10704-014-9985-x

Cited by 37 publications

(19 citation statements)

References 14 publications

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“…Acoustic emission (AE) refers to transient elastic waves, which occur when strain energy is suddenly released with the micro-damage formation of a structure [26]. The space shuttle Columbia disaster upon re-entry, leading to disintegration of the spacecraft and the loss of seven crew members, has served to focus worldwide attention on the requirement for effective structural health monitoring (SHM) techniques as a key enabling technology for future space exploration and space technologies [27,28].…”

Section: Acoustic Emissionmentioning

confidence: 99%

Non-radiative healing assessment techniques for fractured long bones and osseointegrated implant

Vien

Russ

et al. 2019

Biomed. Eng. Lett.

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The paper provides an overview of the fracture healing process of long bones, a review of work that proposed appropriate physical parameters for the assessment of healing and highlights some recent work that reported on the development of non-radiative technique for healing assessment. An overview of the development and monitoring of osseointegration for trans-femoral osseointegrated implant is also presented. The state of healing of a fractured long bone and the stability of osseointegrated implants can be seen as engineering structural components where the mechanical properties are restored to facilitate their desired function. To this end, this paper describes non-radiative techniques that are useful for healing assessment and the stability assessment of osseointegrated implants. The achievement of non-radiative quantitative assessment methodologies to determine the state of healing of fractured long bones and to assess the stability of osseointegrated implant will shorten the patient's rehabilitation time, allowing earlier mobility and return to normal activities. Recent work on the development of assessment techniques supported by the Office of Naval Research as part of the Monitoring of Osseointegrated Implant Prosthesis program is highlighted.

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Section: Acoustic Emissionmentioning

confidence: 99%

Non-radiative healing assessment techniques for fractured long bones and osseointegrated implant

Vien

Russ

et al. 2019

Biomed. Eng. Lett.

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“…Analyzing the acoustic energy level has led to differentiating micro-fractures (low energy) from surface shrinking during drying [37]. Lamy et al [38] studied the failure process of Douglas fir under monotonic loading by using acoustic emission measurements, digital image acquisition, and force-displacement curve analysis. The results show that crack initiation and crack propagation detected by AE activities is in line with the image analysis results.…”

Section: Introductionmentioning

confidence: 99%

The Song Dynasty Shipwreck Monitoring and Analysis Using Acoustic Emission Technique

Zhao

et al. 2019

Forests

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The monitoring of acoustic emission (AE) has allowed tracing of the damage in wooden cultural objects exposed to variations in ambient relative humidity (RH). A year-long on-site AE monitoring of the Song Dynasty shipwreck confirmed the usefulness of the technique in tracing climate-induced damage in wood. New coupling material is tested to make it conform to the conservation rules which is non-corrosive to monitoring objects and a reversible operation. As sensitive parameter of wood damage caused by variations RH, the accumulated ringing counting tends to increase with the increase of daily fluctuation of RH (DFRH). In addition, the damage of wooden cultural objects during shrinkage is stronger than that during swelling. The relationship between the probability of AE activity and the daily DFRH is established and it is determined that the daily variation of RH for long-term protection of the Song Dynasty shipwreck should be controlled within 4%, and an early warning will be given if it exceeds 10%.

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“…Acoustic Emission (AE) is a non-destructive technique allowing insitu monitoring of damage development [6]. The technique is widely applied to research of fracture behaviour in various materials, including metals [7], concrete [8], wood [9], rock [10], masonry [11], and to monitor the integrity of structures [12,13]. Acoustic emissions are elastic waves released at the moment of damage formation.…”

Section: Introductionmentioning

confidence: 99%

Effectiveness of acoustic emission parameters to monitor the crack formation in refractories – Case study on castables of different brittleness

Andreev

Naveen

Verstrynge

2019

Journal of the European Ceramic Society

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Variability of in-service loads justifies the broad range of microstructures in ceramic refractories used as high temperature industrial insulation. Application of the non-destructive technique of Acoustic Emission (AE) potentially provides an insight into the microstructural response to thermo-mechanical loads and enables rational material development and application. Regarding the multitude of existing AE approaches, effectiveness of a number of AE damage parameters was studied. The AE parameters were obtained in cyclic three-point bending for refractory castables showing different brittleness at failure. No significant damping effects and good correlation with material brittleness was seen for the parameters of event counts, b-value, and AF/RA ratio. The loads introducing critical damage obtained from LOAD and CALM ratios of AE were in agreement with those indicated by AF/RA ratio and event counts during unloading. In the study, the parameter of AF/RA ratio differentiating between shear and tensile failure signals was seen as the most universal criterion.

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Acoustic emission technique for fracture analysis in wood materials

Cited by 37 publications

References 14 publications

Non-radiative healing assessment techniques for fractured long bones and osseointegrated implant

Non-radiative healing assessment techniques for fractured long bones and osseointegrated implant

The Song Dynasty Shipwreck Monitoring and Analysis Using Acoustic Emission Technique

Effectiveness of acoustic emission parameters to monitor the crack formation in refractories – Case study on castables of different brittleness

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