Relevant bibliographies by topics / Aerospace Lightweighting

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Book chapters
  4. Conference papers

Academic literature on the topic 'Aerospace Lightweighting'

Author: Grafiati
Published: 25 June 2021
Last updated: 8 February 2022

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Journal articles on the topic "Aerospace Lightweighting"

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Nickels, Liz. "Software toolkits for architected materials, lightweighting, and more." Metal Powder Report 75, no. 4 (July 2020): 203–6. http://dx.doi.org/10.1016/j.mprp.2020.04.003.

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Wang, Dengfeng, Shuang Wang, and Chong Xie. "A multi-objective optimization approach for simultaneously lightweighting and maximizing functional performance of vehicle body structure." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering 234, no. 7 (August 6, 2019): 2086–102. http://dx.doi.org/10.1177/0954407019868140.

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This study presents a hybrid approach to integrate the comprehensive sensitivity analysis method, support vector machine technology, modified non-dominated sorting genetic algorithm-II method and the technique for order preference by similarity to ideal solution, which have been applied to multi-objective lightweight optimization of the B-pillar structure of an automobile. First, numerical models of the static–dynamic stiffness and the crashworthiness performance of automobile are established and validated by experimental testing. Then, the comprehensive sensitivity analysis method is used to define the final optimization variables. Experimental design and support vector machine based surrogate model techniques are introduced to establish the approximate model; subsequently, the modified non-dominated sorting genetic algorithm-II algorithm is applied to the multi-objective lightweight optimization design of the B-pillar structure, and the non-dominated solution set is determined. The principal component analysis method is applied to determine the weight of each objective. Finally, the technique for order preference by similarity to ideal solution method is used to rank Pareto front from best to worst to obtain the optimal solution; furthermore, a comparison between the original model and optimized design denotes that the mass of the B-pillar being reduced by 22.55% under the other impacting indicators is well guaranteed. Therefore, the proposed hybrid approach provided promising prospects in the lightweight and crashworthiness optimization application of the B-pillar.
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Kohar, Christopher P., Amir Zhumagulov, Abhijit Brahme, Michael J. Worswick, Raja K. Mishra, and Kaan Inal. "Development of high crush efficient, extrudable aluminium front rails for vehicle lightweighting." International Journal of Impact Engineering 95 (September 2016): 17–34. http://dx.doi.org/10.1016/j.ijimpeng.2016.04.004.

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Mahfoud, Musbah, and Daryoush Emadi. "Aluminum Recycling - Challenges and Opportunities." Advanced Materials Research 83-86 (December 2009): 571–78. http://dx.doi.org/10.4028/www.scientific.net/amr.83-86.571.

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Aluminum has experienced significant growth in several sectors over the last decade as a result of its properties and performance attributes. Aluminum is being recognized by different sectors such as automotive, construction, aerospace, etc. as a one of the best candidate material for various applications. Increasing demand for aluminum-based products and further globalization of the aluminum industry have contributed significantly to the higher consumption of aluminum scrap for re-production of aluminum alloys. In automotive applications, for example, the opportunities for continued growth in powertrain and suspension applications plus lightweighting of body structures offer the potential for considerable further growth. Today, a large amount of the aluminum going into new products is coming from recycled products. This represents a growing "energy bank" of aluminum that will become available for recycling at the end of vehicles' lives, and thus recycling is becoming a major issue, and it is essential to tackle this problem before it is too late. The future growth offers opportunity for new recycling technologies and practices to maximize scrap quality, improve efficiency and reduce cost. The present paper highlights some of the current development work in recycling, the challenges facing the implementation of recycling technologies and the future prospective of the idea.
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Meininger, Rik D., Chol-Bum M. Kweon, Michael T. Szedlmayer, Khanh Q. Dang, Newman B. Jackson, Christopher A. Lindsey, Joseph A. Gibson, and Ross H. Armstrong. "Knock criteria for aviation diesel engines." International Journal of Engine Research 18, no. 7 (September 20, 2016): 752–62. http://dx.doi.org/10.1177/1468087416669882.

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The objective of this study was to develop knock criteria for aviation diesel engines that have experienced a number of malfunctions during flight and ground operation. Aviation diesel engines have been vulnerable to knock because they use cylinder wall coating on the aluminum engine block, instead of using steel liners. This has been a trade-off between reliability and lightweighting. An in-line four-cylinder four-stroke direct-injection high-speed turbocharged aviation diesel engine was tested to characterize its combustion at various ground and flight conditions for several specially formulated Jet A fuels. The main fuel property chosen for this study was cetane number, as it significantly impacts the combustion of the aviation diesel engines. The other fuel properties were maintained within the MIL-DTL-83133 specification. The results showed that lower cetane number fuels showed more knock tendency than higher cetane number fuels for the tested aviation diesel engine. In this study, maximum pressure rise rate, or Rmax, was used as a parameter to define knock criteria for aviation diesel engines. Rmax values larger than 1500 kPa/cad require correction to avoid potential mechanical and thermal stresses on the cylinder wall coating. The finite element analysis model using the experimental data showed similarly high mechanical and thermal stresses on the cylinder wall coating. The developed diesel knock criteria are recommended as one of the ways to prevent hard knock for engine developers to consider when they design or calibrate aviation diesel engines.
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Guba, P., A. Gesing, J. Sokolowski, A. Conle, A. Sobiesiak, S. Das, and M. Kasprzak. "In-situ formed, ultrafine Al-Si composite materials: ductility." Journal of Achievements in Materials and Manufacturing Engineering 1-2, no. 92 (January 2, 2019): 5–12. http://dx.doi.org/10.5604/01.3001.0013.3182.

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Purpose: The work objective includes optimization of the casting production and heat treatment processes that will simultaneously maximize the combination of strength, hardness, and ductility for hypereutectic Al-Si compositions with Si volume fractions of as much as 25 vol.%. In addition, such an in-situ formed composite alloy will attain a unique combination of low production cost, high potential recycled content, and functional characteristics suitable for mission critical aerospace and vehicular applications. Design/methodology/approach: The unique High Pressure Die Casting Universal Metallurgical Simulator and Analyser (HPDC UMSA) was used for melting, cyclic melt treatment, and solidification of the hypereutectic Al-Si-X (A390). The produced as-cast structures contained colonies of nano-diameter Si whiskers and other morphologies, and absence of primary silicon particles. Heat treated structures rendered nano and ultrafine metal matrix composites. Findings: New developed as-cast Al-Si materials containing nano-diameter Si whiskers, without primary silicon particles required ultra short time heat treatment to result in nano and ultrafine metal matrix composite, rendering their hardness, strength and wear resistance, and the same time retaining toughness and ductility. Research limitations/implications: The cast samples were produced in laboratory conditions and potential tensile strength was estimated from empirical correlation with micro-hardness measurements. In the future, the comprehensive mechanical properties need to be tested. Practical implications: These ultrafine Si, Al-MMCs can be net-shape formed by modified HPDC technology or consolidated from spray-atomized alloy powder. Originality/value: Optimization of the entire production process for the hypereutectic Al-Si alloy compositions achieved a uniform distribution of ~ 25 vol.% of ultrafine Si particles in ductile FCC-Al matrix further reinforced by age hardening with nano-scale spinodal GP-zones. The associated mechanical property and ductility improvements will open a wide range of critical lightweighting components in transportation: aerospace, terrestrial vehicle and marine to the optimized hypereutectic Al-Si alloys. Presently, these components do not use the commercial HPDC A390 alloys due to their limited ductility and strength. Proposed new technology will allow conversion of various cast airspace alloys with ultrahigh mechanical properties to the automotive applications.
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Zimbeck, W. R., and R. W. Rice. "Freeform Fabrication of Components with Designed Cellular Structure." MRS Proceedings 542 (1998). http://dx.doi.org/10.1557/proc-542-165.

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AbstractOne of the more intriguing freeform fabrication application areas is the fabrication of bodies with designed microstmctures. While design of reinforced composite microstructures has received much attention, construction of designed porous or cellular structures may have greater technical feasibility and offers attractive practical benefits. Freeform fabrication advantages compared to existing foam and honeycomb fabrication techniques are discussed with emphasis on control over pore size, shape, orientation and distribution including hierarchical and functionally graded pore structures, all in combination with the ability to fabricate near net shape objects of complex geometry. Potential applications include the use of designed surface and bulk porosity to enhance both short and long term fixation of structural metal implants to bone, and lightweighting of aerospace components to approach optimized mass efficiency based on predicted stress distributions within a part. Progress using a stereo/photolithographic fabrication technique to construct designed pore structures in stainless steel bodies is presented. Various techniques used to fabricate fine porosity (size less than a layer thickness), coarse porosity (size greater than a layer thickness), and truss, open cell and honeycomb structures with characteristically high cell volume fraction (i.e., greater than 50 percent) are described.
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Bhattacharjee, Debraj, Tamal Ghosh, Prabha Bhola, Kristian Martinsen, and Pranab Dan. "Ecodesigning and improving performance of plugin hybrid electric vehicle in rolling terrain through multi-criteria optimisation of powertrain." Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering, July 3, 2021, 095440702110275. http://dx.doi.org/10.1177/09544070211027531.

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This work presents an ecodesigning and operating performance improvement methodology in series-parallel Plugin hybrid electric vehicle (PHEV) in passenger car category, through optimisation of powertrain, considering gradeability overreaching rolling terrain. Designing involves consideration for power of prime movers and the geometric specification governing gear ratio, which is the teeth number. PHEV performance is measured in terms of various output characteristics, such as, fuel economy, emissions, vehicle weight, battery charge, maximum velocity and maximum acceleration etc. and such output indicators comprising both ecodesign and vehicle operating performance attributes, eleven in all, are considered. For optimisation, the design space is generated using NREL, ADVISOR simulator in accordance with Taguchi’s method. Multi-criteria optimisation is used to converge the aforesaid output indicators into a single one using TOPSIS, MTOPSIS, Grey Relational Analysis and their surrogate assisted evolutionary algorithm (SAEA) based solutions to select the best from. Such design solutions are tested with UDDS driving cycle for performance analysis; reflecting superiority of SAEA based results. However, best values of output indicators are not from a single solution but are spread over these SAEAs. While, gradability is embedded in the model, its variation as supplemental factor, together with total ownership cost, are included, for extended modelling to ascertain the suitability amongst SAEAs. To extend the test for suitability beyond one driving cycle, also a combined one is formed by integrating two other, namely NEDC and 1015Prius with UDDS. The simulation experiment results from combined driving cycle also indicate preference in favour of MTOPSIS-SAEA model, complying upto 25% gradability for rolling terrain, substantially better than the reference model while also ensuring savings in fuel cost by about 60% over the entire ownership period besides reduction in greenhouse gas emissions ranging between 18% and 21%. This solution also helps in lightweighting the vehicle by over 6%.
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Dissertations / Theses on the topic "Aerospace Lightweighting"

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Losey, Bradley. "Analysis of Magnetic Gear End-Effects to Increase Torque and Reduce Computation Time." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1595514209192582.

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Book chapters on the topic "Aerospace Lightweighting"

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Kiran Kumar, A. S. "Lightweighting—Systematic Approach in Aerospace Industry." In Light Weighting for Defense, Aerospace, and Transportation, 121–26. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-1263-6_9.

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Miracle, Daniel. "Lightweighting and the Future of Aerospace Metals." In Light Weighting for Defense, Aerospace, and Transportation, 27–38. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-15-1263-6_2.

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Conference papers on the topic "Aerospace Lightweighting"

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Rizzolo, Robert H., and Daniel Walczyk. "Ultrasonic Consolidation of Thermoplastic Composite Prepreg for Automated Tape Layup." In ASME 2014 International Manufacturing Science and Engineering Conference collocated with the JSME 2014 International Conference on Materials and Processing and the 42nd North American Manufacturing Research Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/msec2014-4167.

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There is a need to manufacture advanced composite parts faster, cheaper and with less waste as interest in these materials for lightweighting components used by the aerospace, automotive, marine and energy markets continues to grow. For example, although hot gas torch heating is a well-established process for producing advanced thermoplastic composites parts in automated tape layup (ATL), researchers are looking at other polymer welding methods including laser, infrared and ultrasonic heating in an attempt to improve the process. This paper focuses on benchmarking the capabilities of a new method, ultrasonic consolidation, against another standard process for consolidating thermoplastic composites, i.e. thermal pressing. To accomplish this, 3-point beam bending tests are conducted on specimens made with both methods and flexural strength results were used as an objective comparison. The ultrasonic welding proved to be more effective in welding PET/Carbon tape than thermal, showing an increase of maximum flexural stiffness of 65% for the highest performing ultrasonic consolidation samples, but did not weld HDPE/Glass as effectively with the best ultrasonic samples having 36% lower stiffness. The quasi-isotropic samples showed very similar results. The results show that given suitable process parameters and a compatible thermoplastic composites system, ultrasonic consolidation of prepreg composite tape can be as effective as current thermal methods in terms of performance, but still manage to decrease the time and energy consumed.
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