Searched for: +
(1 - 20 of 35)

Pages

List view
Grid view
document
Galanopoulos, Georgios (author), Milanoski, Dimitrios (author), Eleftheroglou, N. (author), Broer, Agnes A.R. (author), Zarouchas, D. (author), Loutas, Theodoros (author)
An increasing interest for Structural Health Monitoring has emerged in the last decades. Acoustic emission (AE) is one of the most popular and widely studied methodologies employed for monitoring, due to its capabilities of detecting, locating and capturing the evolution of damage. Most literature so far, has employed AE for characterizing...
journal article 2023
document
Galanopoulos, Georgios (author), Fytsilis, Efthimios (author), Yue, N. (author), Broer, Agnes A.R. (author), Milanoski, Dimitrios (author), Zarouchas, D. (author), Loutas, Theodoros (author)
In this paper we execute a complex test campaign to develop a novel methodology for the Remaining Useful Life (RUL) estimation of complex multi-stiffened composite aeronautical panels utilizing Machine Learning models trained with Structural Health Monitoring (SHM) data from hierarchically simpler elements, i.e., single-stiffened panels....
journal article 2023
document
Broer, Agnes A.R. (author), Yue, N. (author), Galanopoulos, Georgios (author), Benedictus, R. (author), Loutas, Theodoros (author), Zarouchas, D. (author)
To move towards a condition-based maintenance practice for aircraft structures, design of reliable health management methodologies is required. Development of diagnostic methodologies is commonly realised on simplified sample structures with assumptions that methodologies can be adapted for application to realistic aircraft structures under...
conference paper 2023
document
Galanopoulos, Georgios (author), Eleftheroglou, N. (author), Milanoski, Dimitrios (author), Broer, Agnes A.R. (author), Zarouchas, D. (author), Loutas, Theodoros (author)
Prognosis of the Remaining Useful Life (RUL) of a structure from Structural Health Monitoring data is the ultimate level in the SHM hierarchy. Reliable prognostics are key to a Condition Based Maintenance paradigm for aerospace systems and structures. In the present work, we propose a methodology for RUL prognosis of generic aeronautical...
conference paper 2023
document
Moradi, M. (author), Broer, Agnes A.R. (author), Chiachío, Juan (author), Benedictus, R. (author), Zarouchas, D. (author)
Health indicators are indices that act as intermediary links between raw SHM data and prognostic models. An efficient HI should satisfy prognostic requirements such as monotonicity, trendability, and prognosability in such a way that it can be effectively used as an input in a prognostic model for remaining useful life estimation. However,...
conference paper 2023
document
Moradi, M. (author), Broer, Agnes A.R. (author), Chiachío, Juan (author), Benedictus, R. (author), Loutas, Theodoros H. (author), Zarouchas, D. (author)
A health indicator (HI) is a valuable index demonstrating the health level of an engineering system or structure, which is a direct intermediate connection between raw signals collected by structural health monitoring (SHM) methods and prognostic models for remaining useful life estimation. An appropriate HI should conform to prognostic...
journal article 2023
document
Galanopoulos, Georgios (author), Eleftheroglou, N. (author), Milanoski, Dimitrios (author), Broer, Agnes A.R. (author), Zarouchas, D. (author), Loutas, Theodoros (author)
We present a generic methodology for developing a Health Indicator out of strain-based Structural Health Monitoring data suitable for implementation in prognostic tasks. For this purpose, an in-house test campaign is launched. Single-stringered composite panels are subjected to compression-compression fatigue with the strains being monitored...
journal article 2023
document
Broer, Agnes A.R. (author), Yue, N. (author), Galanopoulos, Georgios (author), Benedictus, R. (author), Loutas, Theodoros (author), Zarouchas, D. (author)
Health management methodologies for condition-based maintenance are often developed using sensor data collected during experimental tests. Most tests performed in laboratories focus on a coupon level or flat panels, while structural component testing is less commonly seen. As researchers, we often consider our experimental tests to be...
conference paper 2022
document
Yue, N. (author), Broer, Agnes A.R. (author), Briand, William (author), Rébillat, Marc (author), Loutas, Theodoros (author), Zarouchas, D. (author)
The application of structural health monitoring (SHM) in composite airframe structural elements under long-term realistic fatigue loading needs to consider the structural behavior on the global level, which is an intricate task. The overall structural stiffness is a key design parameter for composite structures and the stiffness degradation...
journal article 2022
document
Broer, Agnes A.R. (author), Benedictus, R. (author), Zarouchas, D. (author)
With the increased use of composites in aircraft, many new successful contributions to the advancement of the structural health monitoring (SHM) field for composite aerospace structures have been achieved. Yet its application is still not often seen in operational conditions in the aircraft industry, mostly due to a gap between research focus...
journal article 2022
document
Visschers, Fabian L.L. (author), Massaad Mouawad, J.M. (author), van Neer, P.L.M.J. (author), Verweij, M.D. (author), Liu, Danqing (author), Broer, Dirk J. (author)
Coatings with dynamic surface structures are appealing to many applications like haptics and soft robotics. Restrictively, the speed of the surface dynamics in these coatings is often limited to frequencies below 1 kHz, which makes them unsuitable for applications like acoustics and communication optics. This work describes a method to create...
journal article 2022
document
Broer, Agnes A.R. (author), Galanopoulos, Georgios (author), Benedictus, R. (author), Loutas, Theodoros (author), Zarouchas, D. (author)
Conducting damage diagnostics on stiffened panels is commonly performed using a single SHM technique. However, each SHM technique has both its strengths and limitations. Rather than straining the expansion of single SHM techniques going beyond their intrinsic capacities, these strengths and limitations should instead be considered in their...
journal article 2021
document
Galanopoulos, Georgios (author), Milanoski, Dimitrios (author), Broer, Agnes A.R. (author), Zarouchas, D. (author), Loutas, Theodoros (author)
The development of health indicators (HI) of diagnostic and prognostic potential from generally uninformative raw sensor data is both a challenge and an essential feature for data‐driven diagnostics and prognostics of composite structures. In this study, new damage‐sensitive features, developed from strains acquired with Fiber Bragg Grating ...
journal article 2021
document
Van Der Perk, M. E.Madeleine (author), Broer, Linda (author), Yasui, Yutaka (author), Robison, Leslie L. (author), Hudson, Melissa M. (author), Laven, Joop S.E. (author), Van Der Pal, Helena J. (author), Tissing, Wim J.E. (author), Krijthe, J.H. (author)
Background: Female childhood cancer survivors (CCSs) carry a risk of therapy-related gonadal dysfunction. Alkylating agents (AA) are well-established risk factors, yet inter-individual variability in ovarian function is observed. Polymorphisms in CYP450 enzymes may explain this variability in AA-induced ovarian damage. We aimed to evaluate...
journal article 2021
document
Galanopoulos, Georgios (author), Milanoski, Dimitrios (author), Broer, Agnes A.R. (author), Zarouchas, D. (author), Loutas, Theodoros (author)
In order to reduce aircraft downtimes Condition-Based-Maintenance (CBM) is a topic gaining increased popularity in recent years. However, to apply such maintenance policies reliable health monitoring techniques should be implemented. Two state of the art monitoring techniques, namely Fiber Bragg Gratings (FBG) and Acoustic Emission (AE) are...
conference paper 2021
document
Milanoski, Dimitrios (author), Galanopoulos, Georgios (author), Broer, Agnes A.R. (author), Zarouchas, D. (author), Loutas, Theodoros (author)
Real-time Structural Health Monitoring (SHM) of aeronautical structural components is a technology persistently investigated the last years by researchers and engineers to potentially reduce the cost and/or implementation of scheduled maintenance tasks. To this end, various types of sensors have been proposed to serve this role, e.g....
conference paper 2021
document
Broer, Agnes A.R. (author), Galanopoulos, Georgios (author), Zarouchas, D. (author), Loutas, Theodoros (author), Benedictus, R. (author)
A case study is presented in which the first steps are made towards the development of a structural health monitoring (SHM) data fusion framework. For this purpose, a composite single-stiffener panel is subjected to compression-compression fatigue loading (R = 10). The carbon-epoxy panel contains an artificial disbond of 30 mm, which was...
conference paper 2021
document
Broer, Rutger (author)
The thesis analyses the role of public participation and energy justice perceptions of local stakeholders on policy-making in the heating transition in the district Mariahoeve in The Hague. The thesis shows that the municipality of The Hague approaches public participation both top-down and bottom-up. Participants mainly expressed justice...
master thesis 2020
document
Broer, Agnes A.R. (author), Zarouchas, D. (author), Benedictus, R. (author)
Experimental campaign to develop a multi-sensing structural health monitoring (SHM) framework in order to diagnose impact damage in stiffened composite aircraft structures on all four SHM levels, namely 1) detection, 2) localisation, 3) type, and 4) severity.
poster 2020
document
Broer, Agnes A.R. (author), Zarouchas, D. (author)
A new constant life diagram (CLD) model is proposed to predict the fatigue life of carbon fibre-reinforced epoxy laminates under constant amplitude (CA) loading. The CLD is asymmetric and non-linear, and it is built upon the anisomorphic CLD model. It consists of two sub-models; one sub-model is applicable to laminates with lay-ups...
journal article 2019
Searched for: +
(1 - 20 of 35)

Pages

List view
Grid view