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Towards an Improvement of Airport Retail Waste Management Using the Double Diamond Design Process 32nd

Towards an Improvement of Airport Retail Waste Management Us...

引用

32nd International Conference on Flexible Automation and Intelligent Manufacturing

作者： Tjahjono, Michelle Tjahjono, Benny Unal, Enes Trung Hieu Tran Cranfield Univ Ctr Design Engn Cranfield MK43 0AL Beds England Coventry Univ Ctr Business Soc Coventry CV1 5FB W Midlands England

ISBN: (纸本)9783031381645;9783031381652

This paper describes a research project to improve airport retail waste management, particularly in terms of waste segregation and effective processing according to current waste management practices. The Double Diamond design process was employed as the research methodology to identify and challenge these practices. On-site observations were conducted to begin the project by collecting data on the most recent airport waste management procedures and this was the demonstration of the Discover and problem identification phase of the Double Diamond methodology. Airports may apply this in the Develop and Delivery phases to boost recovery rates and handle waste more effectively and economically, lowering the waste transported to landfills or for incineration, and achieving their net-zero goals. This paper contributes to the body of knowledge on global waste management methods, especially in the aviation sector where little academic discourse exists on this issue. Practitioners can benefit from the Double Diamond's design structure to provide guidance for implementing and assessing airport waste management practices.

关键词： Double Diamond design waste management airport waste retail waste net zero

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Design Parameters to Develop Porous Structures: Case Study Applied to DLP 3D Printing 32nd

Design Parameters to Develop Porous Structures: Case Study A...

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32nd International Conference on Flexible Automation and Intelligent Manufacturing

作者： Rodrigues, R. Lopes, P. Oliveira, Luis Santana, L. Lino Alves, J. Univ Porto Mestrado Design Ind & Prod Porto Portugal Univ Porto INEGI Fac Engn Porto Portugal Univ Sao Paulo Sao Paulo Brazil

ISBN: (纸本)9783031382406;9783031382413

Generative design is a collaborative design process between humans and computers that provides multiple solutions to the same problem. Lattice structures are developed using this method to reduce one property, e.g. mass, while trying to maintain another, e.g. strength. This work arises with the aim of developing lattice structures for bone implants to make them porous and promote the healing process of bone tissue. Periodic Cell type test cubes were developed with maximum pore sizes of 500 and 300 mu m and wall thicknesses of 1, 0.6, 0.4 and 0.2 mm, and Stochastic Voronoi type test cubes with a wall thickness of 0.4 mm with 500, 750, 1000, 1500 and 2000 points. The cubes were printed on a Digital Light Processing Technology 3D printer, to be analysed according to printability, uncured resin removal, mass and compressive strength. The periodic test cubes didn't pass the printing stage as they came out deformed or pore filled. The stochastic type test cubes showed acceptable results regarding the printing and cleaning process. When comparing the results of the compression tests, it is seen that increasing the number of points, while keeping the thickness, there is an increase in the mechanical properties, which can be seen with the results of the samples of 500 points, that compared with the dense ones, present a reduction of 98% in relation to the maximum tension of compression and 99% in the compression modulus, and with the samples with 2000 points, that present a reduction of 97% and 98%, respectively.

关键词： Additive Manufacturing Digital Light Processing Generative Design Lattice Structures Periodic Stochastic

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Free Vibration Behavior of Laminated Composite Plates 15th

Free Vibration Behavior of Laminated Composite Plates

引用

15th International Conference on Vibration Problems (ICoVP)

作者： Adim, Belkacem Daouadji, Tahar Hassaine Tissemsilt Univ Dept Sci & Technol Tissemsilt Algeria Tiaret Univ Geomat & Sustainable Dev Lab Tiaret Algeria Tiaret Univ Dept Civil Engn Tiaret Algeria

ISBN: (纸本)9789819959211;9789819959228

The present research consists of analyzing the free vibration of composite plates using a new four-variable high-order refined shear function compared to five variables in other high-order theories. Among the advantages of this new theory: It takes into account the shear effect in the calculation of strains without the use of shear correction factors and which gives rise to such a parabolic variation of shear stresses in thickness by satisfying the conditions of nullity of shear stresses at the surfaces (upper and lower). The numerical results obtained by the present high-order shear theory predict natural frequencies with such accuracy while comparing with the elasticity solution and other solutions of the high-order theories available in the literature. In the light of the results obtained we can say that the present high-order shear theory is accurate, simple and effective for studying the dynamic behavior of composite plates.

关键词： Composite materials Laminated plate High order refined plate theory Transverse shear Free vibration

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Point Cloud Interpolation by RGB Image to Estimate Road Surface Profile for Preview Suspension Control 16th

Point Cloud Interpolation by RGB Image to Estimate Road Surf...

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16th International Symposium on Advanced Vehicle Control

作者： Inoue, Masato Kawasaki, Yosuke Suzuki, Takuma Washimi, Yuta Tanimoto, Tsutomu Takahashi, Masaki Keio Univ Grad Sch Hiyoshi 3-14-1 Yokohama Kanagawa Japan Nissan Motor Co Ltd EV Syst Lab Res Div Yokohama Kanagawa Japan Keio Univ Kiyoshi 3-14-1 Yokohama Kanagawa Japan

ISBN: (纸本)9783031703942;9783031703928;9783031703911

The growing prevalence of autonomous driving is expected to shift passengers' attention from driving, increasing the demand for enhanced ride comfort. Studies addressing ride comfort have prominently explored active suspension control with recent research on preview suspension control using on-board sensors. The proposed systems often include LiDAR deployment at the front for high-precision road surface profiles. However, these systems often involve costly sensors such as LiDAR, making it impractical for on-board installation. Nonetheless, in recent autonomous vehicles, LiDAR tend to be mounted on the roof. It would be beneficial to leverage this LiDAR for preview control, the point cloud obtained from the roof has insufficient density to accurately perceive the unevenness on the road surface. To overcome the low-density issue in point cloud data obtained from less channels LiDAR, this study applies a supervised machine learning model, developed for autonomous driving, to estimate road surface profiles and enhance the precision of these estimations.

关键词： Depth completion Autonomous car LiDAR Neural Network Point cloud densification Preview control

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Multiple Sensors and Partial Calibration for On-Board Measurement of Rail Acoustic Roughness: Results of Rolling Tests 14th

Multiple Sensors and Partial Calibration for On-Board Measur...

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14th International Workshop on Railway Noise (IWRN)

作者： Chiello, Olivier Pallas, Marie-Agnes Le Bellec, Adrien Tufano, Rita Augez, Romain Malardier, Benjamin Reynaud, Emanuel Vincent, Nicolas Faure, Baldrik Univ Gustave Eiffel CEREMA Univ Lyon UMRAE F-69675 Lyon France Vibratec Railway Business Unit 28 Chem Petit Bois F-69131 Ecully France SNCF Innovat & Res 1-3 Ave Francois Mitterrand F-93212 St Denis France

ISBN: (纸本)9789819978519;9789819978526

The indirect measurement of roughness using vibro-acoustic sensors on board rolling stock is promising, as shown by recent research on this topic. However, a number of improvements can be made to the existing methods to extend their range of validity. In this paper, the performance of the multi-sensor method developed in the framework of the French research project MEEQUAI is presented. The estimation of the effective roughness is performed for different sensor families using a least squares method in the frequency domain, from the signal spectra in third octave and modelled transfer functions corresponding to the detected track layout. A partial calibration method is also proposed. The calibration gain is relative and allows the variability of the transfers with the track support to be retained, thanks to the models. The method was tested in France with sensors installed on a test train running at several speeds on a track section of a railway test center as well as on two track sections of the national railway network with different supports.

关键词： Rolling noise Rail roughness On-board measurement Calibration

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Production Radio-Chromic Films Dosimeter for Low and High Irradiation Dose Application

Production Radio-Chromic Films Dosimeter for Low and High Ir...

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Saudi International Conference on Nuclear Power engineering (SCOPE)

作者： Alsuhybani, Mohammed S. Albarqi, Mubarak M. Alsulami, Raed A. Alqahtani, Sarah H. Alharbi, Khalid N. Alotaibi, Mohammed F. King Abdulaziz City Sci & Technol Nucl Technol Inst Riyadh 11442 Saudi Arabia

ISBN: (纸本)9783031643613;9783031643620

The aim of this study is to provide a dosimeter film for industrial and medical applications using different types of dyes with polyvinyl alcohol as support (using a concentration of 10 mu mand 30 mu mthicknesses of (10, 15, 20 ml), and polyvinyl alcohol (PVA) films were exposure to gamma rays. The films were exposed to different dosage ranges (from 5-60 kGy). Ultraviolet-visible (UV/VIS) spectrophotometer was used to measure the color change of film dosimeter before and after exposure to gamma rays (at 250 to 800 nm), Also the film stability was studied at different time periods 1, 7 and 14 days for all films. These films need further studies with different parameters.

关键词： dosimetry radiation detection dyes radiation protection

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Noise Incentivisation for UK High Speed Train Procurement 14th

Noise Incentivisation for UK High Speed Train Procurement

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14th International Workshop on Railway Noise (IWRN)

作者： Sica, Gennaro Marshall, Tom Sims, Jon Owen, David Bewes, Oliver High Speed Two HS2 Ltd 1 Eversholt St London NW1 2DN England Arup 63 St Thomas St Bristol BS1 6JZ Avon England

ISBN: (纸本)9789819978519;9789819978526

The latest generation of high speed trains can be designed, constructed and operated with a lower noise emission that many existing trains. It is permissible to procure these trains for use in sensitive situations such as highly population regions where the noise impact could result in significant environmental impacts. To ensure that the cost of the noise control is proportionate to the benefit it provides, HS2 has developed a mechanism to incentivize pass-by noise in the Tender Evaluation of its fleet of high speed trains. The benefit has been assessed by estimating the monetized value of quieter trains operating on the new HS2 railway as well as the existing railway lines. This value was then used in the whole life value model developed for the Tender Evaluation to ensure train manufactures have a sufficient incentive to include state-of-the-art noise control measures in the design of the new trains. This approach has been successful in achieving the pass-by noise level set out as envisaged mitigation in the HS2 environmental assessments. The noise benefit of trains that are approximately 4 dB quieter than the national specification for interoperability will be experienced by approximately 320,000 people living near one thousand kilometers of railway.

关键词： High speed rail Procurement Incentivisation

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Quasi-3D Modeling of Solid Oxide Fuel Cells for Combined Degradation Study 14th

Quasi-3D Modeling of Solid Oxide Fuel Cells for Combined Deg...

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14th International Conference on Computational Heat and Mass Transfer (ICCHMT)

作者： Noguchi, K. Kishimoto, M. Iwai, H. Kyoto Univ Dept Mech Engn & Sci Nishikyo Ku Kyoto 6158540 Japan

ISBN: (纸本)9783031672408;9783031672415

A quasi-3D model of a single solid oxide fuel cell (SOFC) considering degradation phenomena has been developed to investigate its macroscopic performance during long-term operation. Chromium poisoning, YSZ phase transformation, and interconnector oxidation are considered as the degradation modes. Chromium poisoning is modeled as a decrease in the active triple-phase boundary (TPB) length in the cathode caused by the deposition of chromia. YSZ phase transformation is modeled as a decrease in the ionic conductivity of the electrolyte depending on local temperature and oxygen partial pressure in the anode. Interconnector oxidation is modeled byWagner's theory considering the local temperature and oxygen partial pressure. The simulation results show that the electrochemically active area tends to avoid regions with a higher extent of degradation for all degradation phenomena. Combined degradation behavior is also investigated and discussed.

关键词： Solid oxide fuel cell Quasi-3D model Degradation Multiphysics

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Improvement of the Sewage System for the Nuclear Power Plant WWER-1000 Reactor 8th

Improvement of the Sewage System for the Nuclear Power Plant...

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8th International Scientific-Technical Conference (MANUFACTURING)

作者： Kondus, Vladyslav Pavlenko, Ivan Pitel, Jan Kulikov, Oleksandr Rybalchenko, Volodymyr Ivanov, Vitalii Ciszak, Olaf Sumy State Univ Sumy Ukraine Tech Univ Kosice Presov Slovakia Pozan Univ Technol Poznan Poland

ISBN: (纸本)9783031564659;9783031564635

Currently, there are 4 nuclear power plants (NPPs) operating in Ukraine with 15 power units of the WWER-1000 and WWER-440 types. Each NPP requires the timely replacement of expired equipment for safe operation. About 60% of the country's electricity generation in Ukraine in 2022 was done by NPPs. At the same time, it is worth noting that 7 out of 15 Ukrainian power units have decommissioning dates no later than 2028. This can lead to a loss of up to 20% of electricity generation. To prevent such negative trends, the service life of these power units should be extended with a deep renovation of the existing equipment. Therefore, the article aims to research and develop critical pumping equipment with improved performance (e.g., efficiency, suction capacity) for reactors of the WWER-1000 type. The research was supplemented by top-level design principles, achieving high-performance levels, and design safety considerations. As a result, the development and implementation of modern pumping equipment for the nuclear power industry guarantees the reliability and operation safety of NPPs.

关键词： Energy Efficiency Nuclear Power Process Innovation Self-priming Pump

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Identifying an Image Classification Model forWelding Defects Detection 1

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8th International Scientific-Technical Conference (MANUFACTURING)

作者： Quintero, Hector Elizabeth Mendieta, Elisa Pinzon-Acosta, Cesar Technol Univ Panama Cent Campus Dr Victor Levi Sasso Panama City Panama Theoret Computat & Appl Mech Lab Cent Campus Dr Victor Levi SassoBldg 1 Panama City Panama

ISBN: (数字)9783031564673

ISBN: (纸本)9783031564697;9783031564673

This study aims to evaluate three neural network models to identify a base model that will be used for welding defect detection. A methodology is proposed that involves evaluating three different models: EfficientNet, MobilNet, and You Only Look Once, using a dataset of images of dogs and cats for training. The analysis includes training, monitoring, and tuning crucial parameters to achieve an optimal model. The final model selection will be based on accuracy, complexity and training time, ensuring the most accurate and efficient detection of the database (cats and dogs). You Only Look Once is identified as an attractive model due to its high object detection accuracy, crucial for accurate defect identification. Challenges include variability in conditions and defect types, necessitating greater diversity of data sets and model refinement to improve visual presentation. The impact of this study lies in its ability to evaluate the application of convolutional neural networks model for welding defect detection, which can have a great impact on the quality and safety of welded structures in various industrial fields. By achieving more accurate and efficient defect detection, potentially dangerous and costly structural failures can be avoided. Furthermore, the developed methodology and approaches may be applicable to other domains requiring visual anomaly detection, thus extending the impact beyond the realm of welding.

关键词： convolutional neural networks inspection object detection

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