Searched for: subject%3A%22inspection%22
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Koohmishi, Mehdi (author), Kaewunruen, Sakdirat (author), Chang, L. (author), Guo, Y. (author)
Railway track health monitoring and maintenance are crucial stages in railway asset management, aiming to enhance the train operation quality and service life. For this aim, various inspection means (using diverse non-destructive testing techniques) have been applied, however, these means are mostly not able to monitor whole railway track...
review 2024
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Dekhovich, A. (author), Bessa, M.A. (author)
We introduce a new continual (or lifelong) learning algorithm called LDA-CP &S that performs segmentation tasks without undergoing catastrophic forgetting. The method is applied to two different surface defect segmentation problems that are learned incrementally, i.e., providing data about one type of defect at a time, while still being...
journal article 2024
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Yarveisy, R. (author), Khan, Faisal (author), Abbassi, Rouzbeh (author)
This paper presents a data-driven approach to predict the pipelines’ corrosion-induced Burst failure. In this approach, different aspects of pit growth progression and spatial distribution of pits are simulated. The proposed approach takes advantage of population characteristics to model these aspects of the degradation paths for each pipe...
journal article 2024
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Ewald, Vincentius (author)
One of the classical solutions to maintain the aircraft structural integrity is to rely on the analysis of non-destructive testing (NDT) inspector with various inspection methods. However, it is relatively expensive in matter of time and costs to train human resources until the certification is reached. Further, in majority of the cases of...
doctoral thesis 2023
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Wu, Di (author)
Ultrosonic pulse-echo testing is gaining increasing attention for its feasibility, accuracy, and versatility in structural examinations of concrete constructions. A1040 MIRA 3D PRO is an emerging low-frequency pulse-echo ultrasonic tomography device. Developed in 2021, this device is claimed to be suitable for manual and automated concrete...
master thesis 2023
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Tao, N. (author)
THICK composite materials, e.g., thickness of more than 50 mm, are increasingly being used across diverse industry sectors owing to their significant advantages of weightsavings, superiormaterial properties and load-carrying capability. These materials tend to be adopted in safety-critical applications such as large primary or secondary load...
doctoral thesis 2023
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Bhustali, P. (author), Andriotis, C. (author)
Long-term inspection and maintenance (I&M) planning, a multi-stage stochastic optimization problem, can be efficiently formulated as a partially observable Markov decision process (POMDP). How- ever, within this context, single-agent approaches do not scale well for large multi-component systems since the joint state, action and observation...
conference paper 2023
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Heerkens, Lidewij (author)
The Nederlandse- Voedsel en Warenautoriteit (NVWA) asked the at-first-sight simple question of how to combine risk-based and random methods for inspection. Risk-based and random inspection methods have contrasting incentives. Risk-based inspection increases efficiency and allocates resources efficiently but fails to regulate low and emergent...
master thesis 2023
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Schmidt, Stephan (author)
This paper examines the end-to-end development process for a Convolution Neural Network (CNN) based damage classification tool for ultrasonic inspection of aerospace-grade composite structures. The recent advent of Artificial Intelligence (AI) and Machine Learning (ML) has piqued the interest of the aerospace industry since it has the potential...
master thesis 2023
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Ayaydin, Suzan (author)
Food safety inspections play an important role in the safety of consumers of food products. Even though food safety regulations have disciplinary power over food-related businesses, inspections are needed to ensure that regulations are followed for the well-being of consumers. Traditionally inspections did not have a goal of targeting higher...
master thesis 2023
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van Eeden, Simon (author)
Visual inspection of liquid medicine containers for contamination and defects is mandatory and crucial to ensure their safety for injection. This document presents research and development of three modules of the Visual Particle Inspection Subsystem (VPIS), an automatic inspection subsystem with the task of detecting and classifying particle...
master thesis 2023
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Zhao, Wenbo (author), Qiang, Weile (author), Yang, Fei (author), Jing, Guoqing (author), Guo, Y. (author)
Ballast layer defects are the primary cause for rapid track geometry degradation. Detecting these defects in real-time during track inspections is urgently needed to ensure safe train operations. To achieve this, an indicator, the track degradation rate (TDR) was proposed. This rate is calculated using track geometry inspection data to locate...
journal article 2023
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Tao, N. (author), Anisimov, A. (author), van Duijn, Esther (author), Vos, Lisette (author), Steeman, Ilse (author), Keune, Katrien (author), Noble, Petria (author), Groves, R.M. (author)
The assessment of the structural condition of cultural heritage objects is important for conservation interventions and their long-term preservation. This investigation concerns The Night Watch (1642), a large-format 17<sup>th</sup>-century canvas painting by Rembrandt van Rijn that is on display in the Rijksmuseum, Amsterdam. This painting,...
conference paper 2023
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Gamper, Hannes (author), Forkel, David (author), Diaz Rosales, A. (author), Garai, Jorge Playán (author), Almagro, Carlos Veiga (author), Buonocore, Luca Rosario (author), Matheson, Eloise (author), Di Castro, Mario (author)
At CERN, radiation surveys of equipment and beam lines are important for safety and analysis throughout the accelerator complex. Radiation measurements are highly dependent on the distance between the sensor and the radiation source. If this distance can be accurately established, the measurements can be used to better understand the...
conference paper 2023
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Huang, Y. (author), Qin, Guojin (author), Yang, M. (author)
RBI, referring to a risk-based approach to inspection planning, is an established pipeline integrity management method. Both corrosion and dents are the primary threats to pipeline integrity. However, they are often treated separately in RBI without considering their interactions. This coupling may lead to a synergic effect on integrity...
journal article 2023
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Shrestha, Ranjit (author), Moradi, M. (author), Sfarra, Stefano (author), Kim, Wontae (author)
The infrared thermography (IRT) technique has shown great potential with many applications in a variety of fields, such as aerospace, petroleum, civil engineering, and so forth. This chapter is designed to provide an overview of the method of IRT in non-destructive material evaluation. It begins with the general introduction and development...
book chapter 2023
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Klerk, W.J. (author), van Bergeijk, Vera (author), Kanning, W. (author), Wolfert, A.R.M. (author), Kok, M. (author)
The condition of flood defence revetments is influenced by many different degradation processes such as animal burrowing, rutting and growth of weeds. Many of these processes are shock-based rather than progressive continuous. As shocks can cause a drop in performance, this means that the condition of a revetment can suddenly decrease,...
journal article 2023
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Haschenburger, A.I. (author)
Composites are increasingly used in the aerospace industry due to their lightweight potential and flexible design options. The most widespread manufacturing process for large components made of fibre composites is still the open mould process. In this process, a composite component is placed on a mould and hermetically sealed with a vacuum bag...
doctoral thesis 2022
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Reinhard, Marko (author)
To meet global market demands, it will remain important to further scale up photovoltaics (PV) production. During the production of solar cells, several defects can occur. Current approaches in quality inspection are reaching their speed limits. This thesis project evaluates the feasibility of faster quality inspection by using deep learning...
master thesis 2022
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Koid, Eunice (author)
Law enforcement occurs in a complex environment that contains a variety of actors that interact with one another. These interactions create emerging collective behavior over time. For example, inspectors will try to influence non-compliant actors to become compliant, while inspectees may comply or thwart inspections. Inspection agencies such as...
master thesis 2022
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