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"Temporary fasteners are required in aircraft assembly, especially in the assembly of wings, fuselage, and aircraft skin's substructure prior to drilling holes for permanent fasteners by automated drilling machines. The objective was to develop a temporary fastener that can be installed, clamped, loosened, and removed from one side with a short head length. Published papers, web pages and patents relating to temporary fasteners were reviewed. Then by considering the ability to meet the operation requirements and concerns, a temporary fastener was designed with the following advantages: · a simple structure that can be easily fabricated · a short head length to save assembly time and reduce the risk of collision between the drilling machine and the head of temporary fastener · an inner thread driver to provide a high clamping load · capable of single-sided one-man operation. The designed fastener was fabricated using VascoMax C300 material. Finite element analysis (FEA) was employed to simulate the working process of the fastener with different design parameters. Deformed shapes of the temporary fastener flexible fingers after heat treatment were simulated, and the simulation results were validated with physical prototypes using a reverse engineering approach. The design parameters of both the flexible fingers and the spring were analyzed, and the analytical data was validated with experimental data measured by strain gages. During the fastener working process, a load cell and a torque sensor were employed to measure clamping force and tightening torque, respectively. The measured results agree well with FEA predictions."--Abstract, page iii.
In its entirety, automation is part of an integrated, multi-disciplinary product development process including the design, process, production, logistics, and systems approach—it depends on all these areas, but it also influences them as well. Automation in aerospace manufacturing is present throughout the entire supply chain, from elementary part manufacturing at suppliers up to final assembly, and a clear understanding of all the benefits (and drawbacks) of automation would help designers and engineers select the right designs for and levels of automation. The Right Level of Automation Within Industry 4.0 examines all impacts of automation that should be known by designers, manufacturers, and companies before investments in automation-related decisions are made—regardless of the which industry they work in. The process and the set of criteria discussed in this report will help decision makers select the right level of automation. Click here to access the full SAE EDGETM Research Report portfolio. https://doi.org/10.4271/EPR2022013
The Integrated Product and Process Design and Development (IP2D2) method is quickly becoming the new standard for the rapid creation of competitively priced, high-quality products. IP2D2 indicates, in the broadest sense, the overlapping, interacting, and iterative nature of all of the aspects of the product realization process. The method is a continuous process whereby a product's cost, performance and features, value, and time-to-market lead to a company's increased profitability and market share. This new text/reference reflects the sweeping changes this approach has brought to traditional engineering design courses and to industry. Carefully organized, with sections on each major stage of the approach, Integrated Product and Process Design and Development: The Product Realization Process is the first complete treatment of this new direction in engineering. The book is designed to help you cultivate an attitude toward design that encourages creativity and innovation, while considering the equally important considerations of customer requirements and satisfaction, quality, reliability, manufacturing methods and material selection, assembly, cost, the environment, and scheduling. Extensively class tested in senior- and graduate-level engineering design courses at the University of Maryland, the book gives equal time to conceptual and practical aspects. As each concept is introduced and explained, two book-long examples provide you with a realistic sense of how a product's creation progresses through its various stages. Numerous checklists and other practical guidelines help you learn to apply the IP2D2 method to your own work. Students and newly graduated engineers will appreciate the modern perspective that more nearly reflects what they will encounter in practice than what is obtainable in traditional texts. For more experienced practicing engineers, this is the new information they need to keep up with recent rapid changes and stay marketable today and in the future.
This book constitutes the refereed proceedings of the 14th International Conference on Optimization and Applications, OPTIMA 2023, held in Petrovac, Montenegro, during September 18–22, 2023. The 27 full papers included in this book were carefully reviewed and selected from 68 submissions. They were organized in topical sections as follows: ​mathematical programming; global optimization; discrete and combinatorial optimization; game theory and mathematical economics; optimization in economics and finance; and applications.
The two volume set LNCS 13258 and 13259 constitutes the proceedings of the International Work-Conference on the Interplay Between Natural and Artificial Computation, IWINAC 2022, held in Puerto de la Cruz, Tenerife, Spain in May – June 2022. The total of 121 contributions was carefully reviewed and selected from 203 submissions. The papers are organized in two volumes, with the following topical sub-headings: Part I: Machine Learning in Neuroscience; Neuromotor and Cognitive Disorders; Affective Analysis; Health Applications Part II: Affective Computing in Ambient Intelligence; Bioinspired Computing Approaches; Machine Learning in Computer Vision and Robot; Deep Learning; Artificial Intelligence Applications.