Feasibility of ultrasonic and eddy current methods for measurement of residual stress in shot peened metals

Lavrentyev, A. I.; Stucky, Paul; Veronesi, William A.

doi:10.1063/1.1306227

Cited by 15 publications

(11 citation statements)

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“…Compressive (tensile) stresses cause an increase (decrease) in the electrical conductivity [7]. Upto 5% increase in conductivity is obtained near the surface of water peened specimens.…”

Section: Discussionmentioning

confidence: 99%

“…The multi-frequency eddy current inversion technique is hence effective for assessing the near surface changes in conductivity due to peening and can be used to gauge information regarding the depth of reversal of residual stresses and relative intensities of peening between different samples. Future directions involve the study of the effect of dislocation density [7] on the eddy current signals and an attempt to isolate them as a step towards the calibration of conductivity profiles as the actual stress profiles. …”

Section: Discussionmentioning

confidence: 99%

“…1. The residual stresses occurring due to peening have been well studied and documented [6,7]. A result from finite element simulation of stationary impingement of a water jet on a thick body indicates that localized plastic yielding initiates below the surface, causing maximum compressive stresses in the sub-surface region [6].…”

Section: Water Jet Peeningmentioning

confidence: 98%

“…The assumption is valid in the cases of shot peened or water peened samples in which the stress profiles are inherently axisymmetric [6,7]. The data required for the inverse model are:…”

Section: Inverse Model: Incremental Layer Approachmentioning

confidence: 99%

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A multi-frequency eddy current inversion method for characterizing conductivity gradients on water jet peened components

Sundararaghavan

Balasubramaniam

Babu

et al. 2005

NDT & E International

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“…Compressive (tensile) stresses cause an increase (decrease) in the electrical conductivity [7]. Upto 5% increase in conductivity is obtained near the surface of water peened specimens.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Water Jet Peeningmentioning

confidence: 98%

“…The assumption is valid in the cases of shot peened or water peened samples in which the stress profiles are inherently axisymmetric [6,7]. The data required for the inverse model are:…”

Section: Inverse Model: Incremental Layer Approachmentioning

confidence: 99%

See 2 more Smart Citations

A multi-frequency eddy current inversion method for characterizing conductivity gradients on water jet peened components

Sundararaghavan

Balasubramaniam

Babu

et al. 2005

NDT & E International

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“…They give a positive acoustoelastic constant (increasing speed with increasing compressive stress) [7]. They give a positive acoustoelastic constant (increasing speed with increasing compressive stress) [7].…”

mentioning

confidence: 99%

Characterization of Surface Treated Aero Engine Alloys by Rayleigh Wave Velocity Dispersion

Köhler¹,

Barth²,

Schubert³

et al. 2010

AIP Conference Proceedings

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Investigation of local rayleigh wave velocity dispersion due to surface residual stress AIP Conf.ABSTRACT. In aero engines mechanically high stressed components made of high-strength alloys like IN718 and Ti6Al4V are usually surface treated by shot-peening. Other methods, e.g. laserpeening, deep rolling and low plasticity burnishing are also available. All methods introduce compressive residual stress desired for minimize sensitivity to fatigue or stress corrosion failure mechanisms, resulting in improved performance and increased lifetime of components. Beside that, also cold work is introduced in an amount varying from method to method. To determine the remaining life time of critical aero engine components like compressor and turbine discs, a quantitative non-destructive determination of compressive stresses is required. The opportunity to estimate residual stress in surface treated aero engine alloys by SAW phase velocity measurements has been re-examined. For that original engine relevant material IN718 has been used. Contrary to other publications a significant effect of the surface treatment to the sound velocity was observed which disappeared after thermal treatment. Also preliminary measurements of the acousto-elastic coefficient fit into this picture.

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Ultrasonic health monitoring in structural engineering: buildings and bridges

Mutlib

Baharom

El-Shafie

et al. 2015

Struct. Control Health Monit.

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SUMMARYUltrasonic monitoring is one of the most important tools in the field of structural health monitoring (SHM). The main goal of this paper is to provide a comprehensive review of the recent advances and achievements in ultrasonic wave SHM of buildings and bridges built with concrete and steel materials and the types of sensors used in these structures. In this paper, the parameters affecting the monitoring process, including the type of damage, the type of ultrasonic wave, and the type of sensor, are reviewed. The sensor devices used to transmit and receive ultrasonic waves, like lead zirconate titanate, electromagnetic acoustic transducer, and others and their applications in building and bridges, are discussed. The limitations of each type of theses sensors are highlighted. Finally, conclusions are drawn and recommendations for an improved sensor overcoming the shortcomings of the current sensors are given.

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Feasibility of ultrasonic and eddy current methods for measurement of residual stress in shot peened metals

Cited by 15 publications

References 0 publications

A multi-frequency eddy current inversion method for characterizing conductivity gradients on water jet peened components

A multi-frequency eddy current inversion method for characterizing conductivity gradients on water jet peened components

Characterization of Surface Treated Aero Engine Alloys by Rayleigh Wave Velocity Dispersion

Ultrasonic health monitoring in structural engineering: buildings and bridges

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