Browsing College of Engineering and Informatics by Author "Science Foundation Ireland"
Now showing items 1-20 of 26
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Adaptive artifact removal for selective multistatic microwave breast imaging signals
Elahi, Muhammad Adnan; Glavin, Martin; Jones, Edward; O'Halloran, Martin (Elsevier, 2017-02-01)Microwave imaging is one of the most promising alternative breast imaging modalities. Early-stage artifact removal is an important signal processing component of a microwave breast imaging system. In this paper, a monostatic ... -
Challenges of post-measurement histology for the dielectric characterisation of heterogeneous biological tissues
La Gioia, Alessandra; O'Halloran, Martin; Porter, Emily (MDPI, 2020-06-09)The dielectric properties of biological tissues are typically measured using the open-ended coaxial probe technique, which is based on the assumption that the tissue sample is homogeneous. Therefore, for heterogeneous ... -
Characterisation of LCF performance of X100 weld-joints: Mechanistic yield strength modelling, finite element analyses and DIC testing
Long, D.J.; Devaney, R.J.; O'Donoghue, P.E.; Song, H.; Barrett, R.A.; Leen, Sean B. (Elsevier, 2021-03-26)This paper is concerned with the effect of welding on the fatigue behaviour of X100 material for steel catenary risers. The methodology includes both modelling and experimental characterisation. The modelling combines (i) ... -
Comparison of radar-based microwave imaging algorithms applied to experimental breast phantoms
Elahi, Muhammad Adnan; Lavoie, B. R.; Porter, Emily; Glavin, Martin; Jones, E.; Fear, E. C.; O'Halloran, Martin (Union Radio-Scientifique Internationale, 2017-08-19)Microwave imaging is a promising imaging modality for the early detection of breast cancer. The two most important signal processing components of a radar-based microwave imaging system are the early-time artifact removal ... -
Deep learning for facial expression recognition: A step closer to a smartphone that knows your moods
Bazrafkan, Shabab; Nedelcu, Tudor; Filipczuk, Pawel; Corcoran, Peter (Institute of Electrical and Electronics Engineers, 2017-01-08)By growing the capacity and processing power of the handheld devices nowadays, a wide range of capabilities can be implemented in these devices to make them more intelligent and user friendly. Determining the mood of the ... -
Dielectric characterization of diseased human trabecular bones at microwave frequency
Amin, Bilal; Shahzad, Atif; Farina, Laura; Parle, Eoin; McNamara, Laoise; O'Halloran, Martin; Elahi, Muhammad Adnan (Elsevier, 2020-02-07)The objective of this study is to determine whether in vitro dielectric properties of human trabecular bones, can distinguish between osteoporotic and osteoarthritis patients' bone samples. Specifically this study enlightens ... -
A dislocation mechanics constitutive model for effects of welding-induced microstructural transformation on cyclic plasticity and low-cycle fatigue for X100Q bainitic steel
Devaney, Ronan J.; Barrett, Richard A.; O'Donoghue, Padraic E.; Leen, Sean B. (Elsevier, 2020-12-14)This paper presents a physically-based cyclic viscoplasticity model to capture the influence of welding-induced microstructural transformation on the fatigue response of the bainitic high-strength low-alloy steel, X100Q. ... -
A dislocation-based yield strength determination model in nano-indentation test
Tao, Ping; Ye, Fei; Gong, Jianming; Barrett, Richard A.; Leen, Sean B. (SAGE Publications, 2021-02-20)This paper presents a dislocation-based yield strength model for the nano-indentation size effect. The model is based on functional expressions involving the densities of statistically stored dislocations and geometrically ... -
Dual-phase cohesive zone modelling and experimental validation for hydrogen-assisted cracking of 2205 duplex stainless steel
Tao, Ping; Ye, Fei; Gong, Jianming; Yang, Xinyu; Barrett, Richard A.; Leen, Sean B. (Elsevier, 2021-01-01)The hydrogen-assisted cracking (HAC) behavior of 2205 duplex stainless steel is investigated via experimental testing and computational modelling, with specific focus on developing a predictive methodology for the coupled ... -
Early-stage dielectric characterisation of renal cell carcinoma for positive surgical margin detection
La Gioia, Alessandra; Elahi, Adnan; Bottiglieri, Anna; Istuk, Niko; Dowling, Catherine; D'Arcy, Frank; O'Halloran, Martin; Porter, Emily (Institute of Electrical and Electronics Engineers, 2019-03-31)Partial nephrectomy is preferred to total nephrectomy tor clinically localised renal cell carcinoma. In order to minimise the risk of local tumour recurrence after partial nephrectomy, ideally, the surgical margins of the ... -
Effect of welding on microstructure and mechanical response of X100Q bainitic steel through nanoindentation, tensile, cyclic plasticity and fatigue characterisation
Devaney, Ronan J.; O'Donoghue, Padraic E.; Leen, Sean B. (Elsevier, 2020-12-30)This paper presents an experimental characterisation of fatigue at welded connections for the next-generation high-strength low-alloy offshore riser steel, X100Q. An instrumented girth weld is conducted with a parallel ... -
Experimental and computational characterization of the effect of manufacturing-induced defects on high temperature, low-cycle fatigue for MarBN
O'Hara, Eimear M.; Phelan, B.; Osgerby, S.; Barrett, Richard A.; Raghavendra, R.; Leen, Sean B.; Harrison, Noel M. (Elsevier, 2020-05-22)Manufacturing-induced defects are a key source of crack initiation and component failure under high temperature cyclic loading. In this work, 3D X-ray micro-computed tomography and microstructural analysis of manufacturing-induced ... -
Experimental investigation on damage evolution in pre-corroded aluminum alloy 7075-T7651 under fatigue loading
Song, Haipeng; Liu, Changchun; Zhang, Hao; Yang, Xudong; Chen, Yajun; Leen, Sean B. (Elsevier, 2020-09-01)This paper experimentally investigates the fatigue damage evolution in pre-corroded aluminum alloy (AA) 7075-T7651 via digital image correlation (DIC) and scanning electron microscopy (SEM). Three stages of fatigue damage ... -
Exploiting tissue dielectric properties to shape microwave thermal ablation zones
Bottiglieri, Anna; Ruvio, Giuseppe; O’Halloran, Martin; Farina, Laura (MDPI, 2020-07-16)The dielectric characterization of tissue targets of microwave thermal ablation (MTA) have improved the efficacy and pre-procedural planning of treatment. In some clinical scenarios the tissue target lies at the interface ... -
Gaze Visual - A graphical software tool for performance evaluation of eye gaze estimation systems
Kar, Anuradha; Corcoran, Peter (Institute of Electrical and Electronics Engineers, 2018-08-15)The concept of an open source software developed for all round performance evaluation of gaze tracking systems is presented. The capabilities of this software towards quantitative, statistical and visual analysis of gaze ... -
Investigating human bone microarchitecture and dielectric properties in microwave frequency range
Amin, Bilal; Shahzad, Atif; Farina, Laura; Parle, Eoin; McNamara, Laoise; O'Halloran, Martin; Elahi, Muhammad Adnan (Institute of Electrical and Electronics Engineers, 2019-03-31)Dielectric properties of bones are proposed to monitor bone quality. However, no study has investigated the relationship between bone dielectric properties and microarchitecture of bone, which is of paramount importance ... -
Investigation of histology radius for dielectric characterisation of heterogeneous materials
La Gioia, Alessandra; O'Halloran, Martin; Elahi, Muhammad Adnan; Porter, Emily (Institute of Electrical and Electronics Engineers, 2018-07-13)Knowledge of the dielectric properties of biological tissues is fundamental in the design of novel electromagnetic-based medical devices. Tissue dielectric properties are typically measured using the open-ended coaxial ... -
The past, present and future in scaffold-based tendon treatments
Lomas, A.J.; Ryan, C.N.M.; Sorushanova, A.; Shologu, N.; Sideri, A.I.; Tsioli, V.; Fthenakis, G.C.; Tzora, A.; Skoufos, I.; Quinlan, Leo R.; Ó Laighin, Gearóid; Mullen, A.M.; Kelly, A.M.; Kearns, J.L.; Biggs, S.; Pandit, Abhay; Zeugolis, Dimitrios I. (Elsevier, 2015-04)Tendon injuries represent a significant clinical burden on healthcare systems worldwide. As the human population ages and the life expectancy increases, tendon injuries will become more prevalent especially among young ... -
Performance of leading artifact removal algorithms assessed across microwave breast imaging prototype scan configurations
Elahi, Muhammad Adnan; Curtis, C.; Lavoie, B.R.; Glavin, Martin; Jones, Edward; Fear, E.; O’Halloran, Martin (Elsevier, 2017-03-02)Microwave imaging is a promising imaging modality for the detection of early-stage breast cancer. One of the most important signal processing components of microwave radar-based breast imaging is early stage artifact ... -
Real-time automotive street-scene mapping through fusion of improved stereo depth and fast feature detection algorithms
Javidnia, Hossein; Corcoran, Peter (Institute of Electrical and Electronics Engineers, 2017-01-08)The real-time tracking of street scenes as a vehicle is driving is a key enabling technology for autonomous vehicles. In this work we provide the basis for such a system through combining an improved advanced random walk ...