- document
-
Iaccarino Idelson, A. (author), Sánchez López, Miguel (author), Groves, R.M. (author)The mechanical aspects of canvas painting conservation and the study of the effects of conservation treatments benefit greatly from quantifying the mechanical characteristics of the materials. However, this is seldom possible as only few labs have the necessary equipment. This paper presents the development of a biaxial tester to be used for...journal article 2023
- document
-
Takali, Farid (author), Nirwal, Sonal (author), Othmani, Cherif (author), Groves, R.M. (author)It has been shown that the roots of guided waves in laminate plates produced by the ordinary differential equations (ODE) approach may not hold under to some computational conditions. A particular drawback of the 2D formulation of the ODE approach is the lack of reliability in the case of unidirectional laminates due to the decoupling...journal article 2023
- document
-
Cheng, L. (author), Nokhbatolfoghahai, A. (author), Groves, R.M. (author), Veljkovic, M. (author)The performance of the Acoustic Emission (AE) technique is significantly dependent on the sensors attached to the structural surface. Although conventional commercially AE sensors, like R15a and WSa sensors, have been extensively employed in monitoring many different structures, they are unavailable in restricted-assess areas. In contrast,...conference paper 2023
- document
-
Tao, N. (author), Anisimov, A. (author), Groves, R.M. (author)Thick composite materials are commonly used as load-bearing structures in marine applications. Developing a suitable and sophisticated non-destructive testing (NDT) method for thick composites is an urgent challenge to improve the safety, reliability and maintenance of these structures. Digital shearography has become an important NDT...journal article 2022
- document
-
Fazzi, L. (author), Struzziero, G. (author), Dransfeld, C.A. (author), Groves, R.M. (author)The unique sensing features of the tilted Fibre Bragg Grating (TFBG) as a single three-parameter optical sensor are demonstrated in this work, to monitor the manufacturing process of composite materials produced using Vacuum Assisted Resin Transfer Moulding (VARTM) process. Each TFBG sensor can measure simultaneously and separately strain,...journal article 2022
- document
-
Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)The plasmon resonance spectral peak of a gold spherical nanoparticle (NP) will shift when the NP shape is changed from sphere to spheroid. This may be used as a novel strain detection method with gold NPs embedded in a medium of different refractive index (RI). Applying a strain to the external medium will cause a change in the shape of the...conference paper 2022
- document
-
Fazzi, L. (author), Dias, Nuno (author), Holynska, Malgorzata (author), Tighe, Adrian (author), Rampini, Riccardo (author), Groves, R.M. (author)In this research the ageing of a silicone adhesive in a simulated space environment is monitored through an embedded three parameter tilted fibre Bragg grating (TFBG) sensor. Here, the silicone is used as an adhesive between two thin cover glasses, and the space environmental ageing is simulated by thermal cycles in high vacuum conditions ...journal article 2022
- document
-
Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)Strain-based structural health monitoring (SHM) relies on high performance strain sensing methods. Gold nanoparticle (NP) doped fibre optic sensors not only have the potential to increase the intensity of the backscattered signal to increase the signal to noise ratio but also have plasmon resonance peaks in the visible light range. The...journal article 2022
- document
-
Nokhbatolfoghahai, A. (author), M. Navazi, H. (author), Groves, R.M. (author)In this paper, to increase the performance of the sparse reconstruction method in real complex engineering structures an adaptive dictionary learning framework is proposed which updates the dictionary matrix, to allow improved compatibility with the complex structure. This proposed framework was developed by combining analytical modeling with...journal article 2022
- document
-
Tao, N. (author), Anisimov, A. (author), Groves, R.M. (author)This study aims at improving shearography non-destructive testing (NDT) of deep defects in thick composites with thermal loading. Instead of conventional global heating (GH), the core idea is to apply novel spatially modulated heating (SMH) for shearography NDT. In this paper, the finite element method (FEM) has been used to advance...journal article 2022
- document
-
De Breuker, R. (author), Mkhoyan, T. (author), Nazeer, N. (author), Stuber, V.L. (author), Wang, Xuerui (author), Mkhoyan, A. (author), Groves, R.M. (author), van der Zwaag, S. (author), Sodja, J. (author)This article describes the challenges of integrating smart sensing, actuation, and control concepts into an over-sensed and over-actuated technology integrator. This technology integrator has more control inputs than the expected responses or outputs (over-actuated), and its every state is measured using more than one sensor system (over-sensed)...journal article 2022
- document
-
Wang, X. (author), Benedictus, R. (author), Groves, R.M. (author)Nanoparticle (NP) doping of optical fibres can be used to increase the intensity of the backscattered light used for distributed strain sensing and has shown the advantages of high precision strain detection and multiplex sensing experimentally. However, the backscatter spectral characteristics of NP-doped optical fibres have not been described...journal article 2022
- document
-
Nazeer, N. (author), Groves, R.M. (author), Benedictus, R. (author)In this paper, with the final aim of shape sensing for a morphing aircraft wing section, a developed multimodal shape sensing system is analysed. We utilise the method of interrogating a morphing wing section based on the principles of both hybrid interferometry and Fibre Bragg Grating (FBG) spectral sensing described in our previous work....journal article 2022
- document
-
Tao, N. (author), Anisimov, A. (author), Elenbaas, Marcel (author), Groves, R.M. (author)The use of thick composites and sandwich structures is increasing rapidly in marine, aerospace, and wind energy industries [1–3]. For example in the marine sector, sandwich structures consisting of glassfiber laminate skins bonded to a foam core are attractive because of the advantages of being light-weight, resistant to corrosion and underwater...conference paper 2022
- document
-
Soman, Rohan (author), Fazzi, L. (author), Nokhbatolfoghahai, A. (author), Groves, R.M. (author), Ostachowicz, Wieslaw (author)To perform active structural health monitoring (SHM), guided waves (GW) have received great interest as they can inspect large areas with a few sensors and are sensitive to barely-visible structural damages. Fiber Bragg grating (FBG) sensors offer several advantages such as small size, low weight and ability to be embedded but their use has...conference paper 2022
- document
-
Meister, S. (author), Kolbe, Andreas (author), Groves, R.M. (author)The demand for efficient composite production processes is growing as the proportion of composites in modern aircraft increases. Particularly, thermoplastic composites are interesting for sustainability and cost efficiency. They can be manufactured using deposition methods, which involve heating by radiation in the visible and near-infrared...journal article 2022
- document
-
Gatto, Valentina (author), Anisimov, A. (author), Lettinga, W. (author), Tao, N. (author), Lantman, Merel (author), Crijns, Bernice (author), Groves, R.M. (author)Structural delamination in mural paintings is a complex phenomenon and is considered among the most frequent types of damage. In conservation practice, the most common technique to identify structural detachments is the percussion method. Full-field optical techniques based on interferometry, such as shearography, can provide a more...conference paper 2021
- document
-
Adrianus Ewald, V. (author), Sridaran Venkat, Ramanan (author), Asokkumar, Aadhik (author), Benedictus, R. (author), Boller, Christian (author), Groves, R.M. (author)Predictive maintenance, as one of the core components of Industry 4.0, takes a proactive approach to maintain machines and systems in good order to keep downtime to a minimum and the airline maintenance industry is not an exception to this. To achieve this goal, practices in Structural Health Monitoring (SHM) complement the existing Non...journal article 2021
- document
-
Tao, N. (author), Anisimov, A. (author), Groves, R.M. (author)With the increasing application of thick composites in marine, wind energy and aerospace industries, the inspection of thick composites becomes more and more challenging when considering the variety of thick structures (e.g., laminate, sandwich, honeycomb structures). Shearography is a full-field and non-contact optical non-destructive...conference paper 2021
- document
-
Maria, M. (author), d'Hont, Lieve (author), Anisimov, A. (author), Stols-Witlox, Maartje (author), Groves, R.M. (author)In this study, we describe a method for measuring the spectral reflectance of a paint layer at both the surface and in the volume of the paint layers. We first present a fringes model which illustrates the possibilities for spectral reconstruction using a Short-Time-Fourier-Transform algorithm. We investigate the remaing percentage errors and...conference paper 2021