scholarly journals A Comparison of Lightweight Design Concepts of a Passenger Aircraft Seat Using Topology and CFRP Laminate Optimization

2020 ◽  
Author(s):  
Logan Kupchanko ◽  
Stephen Roper ◽  
Haksung Lee ◽  
Mongyoung Huh ◽  
Il Yong Kim
Keyword(s):  
Lightweight Design ◽  
Cfrp Laminate ◽  
Design Concepts ◽  
Laminate Optimization ◽  
Passenger Aircraft

New Multi-Material Design Concepts and High Integration Light Metal Applications for Lightweight Body Structures

2010 ◽  
Vol 638-642 ◽  
pp. 437-442 ◽  
Author(s):  
Gundolf Kopp ◽  
Elmar Beeh
Keyword(s):  
Lightweight Design ◽  
Steel Structure ◽  
Material Design ◽  
Light Metal ◽  
Attractive Potential ◽  
Reference Structure ◽  
Lightweight Construction ◽  
Design Concepts ◽  
Research Activities ◽  
Crash Performance

A major motivation for the development of new vehicle structures is, apart from the reduction of fuel consumption, is to decrease emissions which affect the climate. Therefore we also have to look at the reduction of vehicle weight and consequently at various strategies for lightweight construction. In the future steel structure concepts still show lightweight potential. But even more attractive potential for lightweight body in white structures could be realised by new multi-material design concepts and highly integrated light metal applications. Today’s research activities are focussed on the area of multi-material design, with the objective of placing the material with the best properties for the given requirements in the right position. Based on various methods of lightweight construction, techniques and tools, it is possible to find an optimum between lightweight design and costs. These activities will be illustrated by several research examples. One example will be the lightweight concept of the front module developed by the Institute of Vehicle Concepts (DLR) in the European research project -‘Super Light Car’ (SLC). By using aluminium in the front structure and the high pressure die casting strut tower the concept has a weight benefit of 32% compared to a steel reference structure. The methodology for reaching targets and requirements like weight reduction, crash performance and cost targets will be explained. Another example is a concept which is developed in the DLR project ‘Novel Vehicle Structures’. This concept shows the combination of different materials and a new construction method to increase front impact crash performance.

scholarly journals EXTENDED TARGET WEIGHING APPROACH (ETWA): IMPACT AND RISK ANALYSIS OF LIGHTWEIGHT CONCEPTS IN THE PRODUCT-PRODUCTION SYSTEM-CO-DESIGN

2021 ◽  
Vol 1 ◽  
pp. 1537-1546
Author(s):  
Albert Albers ◽  
Tobias Stürmlinger ◽  
Sven Revfi ◽  
Kamran Behdinan
Keyword(s):  
Risk Analysis ◽  
Production System ◽  
Production Systems ◽  
Design Method ◽  
Lightweight Design ◽  
Design Solution ◽  
Change Propagation ◽  
Design Concepts ◽  
Extended Target ◽  
The Impact

AbstractLightweight design in interconnected systems becomes more and more complex as the interdependencies cannot be overseen by the product developer. Varying one component might not only influence the interfaces to other components but also the underlying production systems.Therefore, this contribution focuses on the product/production interdependencies and how they can be supported within lightweight design. Based on a functional description of the product it is possible to derive new lightweight design solutions and also to evaluate the change propagation in the production system. For this, a method for the impact and risk analysis is integrated in the lightweight design method Extended Target Weighing Approach (ETWA). By doing so, a risk value for the adapted production system can be calculated and different design concepts can be compared.The application of the developed method on a simplified use-case shows great potentials when evaluating the impact of a newly developed lightweight design solution on an already existing production system supporting the product development in decision making.

Innovative Structural and Joining Concepts for Lightweight Design of a Scaled Model of a Heavy Vehicle System

2007 ◽  
Author(s):  
Gergis W. William ◽  
Samir N. Shoukry ◽  
Jacky C. Prucz ◽  
Thomas H. Evans
Keyword(s):  
Composite Materials ◽  
Lightweight Design ◽  
Research Work ◽  
Core Structure ◽  
Heavy Vehicle ◽  
Scaled Model ◽  
Design Concepts ◽  
Overall Design ◽  
Frp Composite ◽  
Vehicle System

The research work presented in this paper aims at investigating the benefits and practicality of implementing lightweight composite materials and design concepts in heavy trailer systems. The overall purpose is to devise innovative, lightweight design and joining concepts for heavy vehicle structures. A 1 to 4 scaled model representation of a trailer was built to assess the feasibility of creating a trailer from fiber-reinforced polymer (FRP) composite materials and therefore using innovative bonding methods to join the design parts. This portion of work focused on using the process of designing and fabricating the model to have first hand knowledge and experience on possible bonding methods and the types of materials and structures that will optimize strength and weight saving characteristics. Current trailer configurations were studied and shown to have high weight sources in the flooring structure. The process of analyzing innovative bonding methods and the implementation of composite sandwich technology created an alternative lightweight structure to replace heavy flooring constituents of trailer hauls. Finite element modeling and experimental analysis reveal that sandwich technology with a core structure that adds flexural stiffness to the overall design and is aided by an FRP faceplate that geometrically matches the core structure provides solutions to decrease heavy vehicle system weight.

High resolution at low voltage: A new approach

1989 ◽  
Vol 47 ◽  
pp. 76-77
Author(s):  
Arthur V. Jones
Keyword(s):  
Low Voltage ◽  
Emission Sources ◽  
New Approach ◽  
Design Concepts ◽  
Probe Diameter ◽  
Low Voltage Operation ◽  
Sufficient Intensity ◽  
Electron Microscopes ◽  
Scanning Electron Microscopes ◽  
Immersion Type

With the introduction of field-emission sources and “immersion-type” objective lenses, the resolution obtainable with modern scanning electron microscopes is approaching that obtainable in STEM and TEM-but only with specific types of specimens. Bulk specimens still suffer from the restrictions imposed by internal scattering and the need to be conducting. Advances in coating techniques have largely overcome these problems but for a sizeable body of specimens, the restrictions imposed by coating are unacceptable.For such specimens, low voltage operation, with its low beam penetration and freedom from charging artifacts, is the method of choice.Unfortunately the technical dificulties in producing an electron beam sufficiently small and of sufficient intensity are considerably greater at low beam energies — so much so that a radical reevaluation of convential design concepts is needed.The probe diameter is usually given by

Experience Design Applied to Research

2019 ◽  
Vol 2 (1) ◽  
Author(s):  
Andrea CAPRA ◽  
Ana BERGER ◽  
Daniela SZABLUK ◽  
Manuela OLIVEIRA
Keyword(s):  
Information Technology ◽  
Product Development ◽  
Design Process ◽  
Development Process ◽  
Product Development Process ◽  
Experience Design ◽  
Low Resolution ◽  
Design Concepts ◽  
Innovative Products ◽  
Technological Products

An accurate understanding of users' needs is essential for the development of innovative products. This article presents an exploratory method of user centered research in the context of the design process of technological products, conceived from the demands of a large information technology company. The method is oriented - but not restricted - to the initial stages of the product development process, and uses low-resolution prototypes and simulations of interactions, allowing users to imagine themselves in a future context through fictitious environments and scenarios in the ambit of ideation. The method is effective in identifying the requirements of the experience related to the product’s usage and allows rapid iteration on existing assumptions and greater exploration of design concepts that emerge throughout the investigation.

Optimization of Process Parameters in Stir Casting of Hybrid Metal Matrix (LM25/SiC/B4C) Composite Using Taguchi Method

2017 ◽  
Vol 13 (9) ◽  
pp. 6475-6479
Author(s):  
M. Arulraj ◽  
P.K. Palani ◽  
L. Venkatesh
Keyword(s):  
Taguchi Method ◽  
Matrix Material ◽  
Base Material ◽  
Stir Casting ◽  
Aluminium Matrix ◽  
Matrix Composites ◽  
Design Concepts ◽  
Specific Strength ◽  
Optimization Of Process Parameters ◽  
Reinforcement Material

Aluminium based composites exhibit many attractive material properties such as increased stiffness, wear resistance, specific strength and vibration damping and decreased co-efficient of thermal expansion compared with the conventional aluminium alloys. Aluminium Matrix Composites consist of non-metallic reinforcement which offers advantageous properties over base material. Reinforcements like SiC, B4C and Al2O3 are normally preferred to improve the mechanical properties. Here Aluminum LM25 is selected as matrix material while Silicon carbide and Boron carbide are selected as reinforcement material. The fabrication of aluminium matrix was done by stir casting method. In the present study an attempt has been made to investigate the effect of three major stir casting parameters (stir speed, stir duration and preheated temperature of reinforcement material) on stir casting of Aluminium LM25 - SiC - B4C composite. Experiments were conducted based on Taguchi methodology. Taguchi quality design concepts of L9 orthogonal array has been used to determine S/N ratio and through S/N ratio a set of optimum stir casting parameters were obtained. The experimental results confirmed the validity of Taguchi method for enhancing tensile strength of castings. 

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