Imperial College London
Portrait Picture

M H Ferri Aliabadi

Faculty of Engineering, Department of Aeronautics

Chair in Aerostructures
 
 
 
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Contact

 

+44 (0)20 7594 5077m.h.aliabadi

 
 
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Assistant

 

Miss Lisa Kelly +44 (0)20 7594 5056

 
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Location

 

CAGB323City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Seno:2019:10.3390/s19173659,
author = {Seno, AH and Aliabadi, MHF},
doi = {10.3390/s19173659},
journal = {Sensors (Basel, Switzerland)},
title = {Impact localisation in composite plates of different stiffness impactors under simulated environmental and operational conditions},
url = {http://dx.doi.org/10.3390/s19173659},
volume = {19},
year = {2019}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - A parametric investigation of the effect of impactor stiffness as well as environmental and operational conditions on impact contact behaviour and the subsequently generated lamb waves in composite structures is presented. It is shown that differing impactor stiffness generates the most significant changes in contact area and lamb wave characteristics (waveform, frequency, and amplitude). A novel impact localisation method was developed based on the above observations that allows for variations due to differences in impactor stiffness based on modifications of the reference database method and the Akaike Information Criterion (AIC) time of arrival (ToA) picker. The proposed method was compared against a benchmark method based on artificial neural networks (ANNS) and the normalised smoothed envelope threshold (NSET) ToA extraction method. The results indicate that the proposed method had comparable accuracy to the benchmark method for hard impacts under various environmental and operational conditions when trained only using a single hard impact case. However, when tested with soft impacts, the benchmark method had very low accuracy, whilst the proposed method was able to maintain its accuracy at an acceptable level. Thus, the proposed method is capable of detecting the location of impacts of varying stiffness under various environmental and operational conditions using data from only a single impact case, which brings it closer to the application of data driven impact detection systems in real life structures.
AU  - Seno,AH
AU  - Aliabadi,MHF
DO  - 10.3390/s19173659
PY  - 2019///
SN  - 1424-8220
TI  - Impact localisation in composite plates of different stiffness impactors under simulated environmental and operational conditions
T2  - Sensors (Basel, Switzerland)
UR  - http://dx.doi.org/10.3390/s19173659
UR  - https://www.ncbi.nlm.nih.gov/pubmed/31443522
UR  - http://hdl.handle.net/10044/1/73591
VL  - 19
ER  -
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