Imperial College London
Alternate

DrPeterHuthwaite

Faculty of Engineering, Department of Mechanical Engineering

Reader in Mechanical Engineering
 
 
 
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Contact

 

p.huthwaite Website

 
 
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Location

 

566City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Sarris:2023:10.1016/j.ndteint.2023.102790,
author = {Sarris, G and Haslinger, SG and Huthwaite, P and Lowe, MJS},
doi = {10.1016/j.ndteint.2023.102790},
journal = {Independent Nondestructive Testing and Evaluation (NDT and E) International},
pages = {1--13},
title = {Ultrasonic methods for the detection of near surface fatigue damage},
url = {http://dx.doi.org/10.1016/j.ndteint.2023.102790},
volume = {135},
year = {2023}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Fatigue zones in a material can be identified using ultrasonic waves, as it has been shown that their propagation speed will reduce when travelling through such a zone. However, as fatigue damage is usually concentrated in a thin near-surface layer, through-thickness measurements result in very small changes of the average propagation speed across the full thickness, which are potentially difficult to reliably correlate to specific fatigue states. In this study, we have completed fatigue state assessments using Rayleigh waves, which travel on the surface of a material, to maximise those changes. We found that the use of Rayleigh waves amplifies the changes in speed, after propagation in the damaged region, by a factor of up to ten. The monotonic nature of the reduction in wave speed was verified against the theory using dislocation density measurements. Finally, a stiffness-reducing finite-element modelling technique, able to capture the effects of fatigue on the time of flight of longitudinal bulk and Rayleigh waves, was also derived and verified against the experimental measurements.
AU  - Sarris,G
AU  - Haslinger,SG
AU  - Huthwaite,P
AU  - Lowe,MJS
DO  - 10.1016/j.ndteint.2023.102790
EP  - 13
PY  - 2023///
SN  - 0963-8695
SP  - 1
TI  - Ultrasonic methods for the detection of near surface fatigue damage
T2  - Independent Nondestructive Testing and Evaluation (NDT and E) International
UR  - http://dx.doi.org/10.1016/j.ndteint.2023.102790
UR  - https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000926429100001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S0963869523000051?via%3Dihub
UR  - http://hdl.handle.net/10044/1/104382
VL  - 135
ER  -
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