Statistical Modeling of Polarimetric RCS of Road Surfaces for Scattering Simulation and Optimal Antenna Polarization Determination

Incoherent backscattering of mm-waves from natural rough surfaces is considered. A novel method is proposed to determine the statistical properties of surface scattering from range profile measurements. The method is based on modeling the road surface as a grid of uncorrelated scattering elements, described by normalized scattering matrices....

Intrusion Resilience Systems for Modern Vehicles

Current vehicular Intrusion Detection and Prevention Systems either incur high false-positive rates or do not capture zero-day vulnerabilities, leading to safety-critical risks. In addition, prevention is limited to few primitive options like dropping network packets or extreme options, e.g., ECU Bus-off state. To fill this gap, we introduce the...

Convergence of Scattering Parameters and HαA-Features of Road Surfaces

The convergence of polarimetric scattering parameters and H, α and A features of road surfaces under various conditions is analysed. It is shown that the number of radar measurements used for surface classification can be traded off with accuracy of the estimation of the mean value and covariance of S-parameters and H, α and A features....

Statistical Polarimetric RCS Model of an Asphalt Road Surface for mm-Wave Automotive Radar

A method for extracting fully polarimetric statistical properties of road surface radar cross sections is presented. This method is subsequently applied to extract radar cross section information from an asphalt road surface. Furthermore, an approach is introduced to synthesise the scattered signal of road surface returns as measured by a radar....

Circular composites: A design guide for products containing composite materials in a circular economy

The circular composites design guide presents circular economy strategies, product design aspects and tools to (re-)design products containing composite materials for a circular economy.<br/>A circular economy closes the loop for products, parts and materials, through reuse and recycling. In this guide you will find 5 circular economy strategies...

Application of fibre reinforced plastic sandwich structures for automotive crashworthiness applications

In this work the application of fibre reinforced plastic (FRP) sandwich<br/>structures, with particular focus on aramid fibre tufted sandwiches is being studied for<br/>automotive crashworthiness applications using impact testing and numerical simulation.

Improvement of the in-plane crushing response of CFRP sandwich panels by through-thickness reinforcements

Fibre reinforced plastic (FRP) composite materials can provide superior specific energy absorption performance over conventional metallic structures if crush stability can be maintained during the impact event. The core in sandwich structures helps to stabilise the crush front by preventing global buckling, but delamination remains a barrier to...

On local panel distortions due to hot-curing adhesives

For many joining applications, adhesive bonding is the favoured method. It provides the ability to join dissimilar materials such as metals and plastics. Adhesive bonds can be formed over large flange areas subsequently increasing the overall stiffness of the assembly. In some cases, however, the bonding process can lead to distortions, i.e....

Exploring the micro-level of technological innovation systems: Expectations as a key to understanding actor strategies in the field of "green" vehicles.

Innovation at several levels is necessary in order to transform the current automotive based transportation system into a more sustainable one. Alternative propulsion systems, like fuelcell, battery-electric or hybrid vehicles were proposed, as green alternatives to the dominant fossil fuel based mobility system. In particular the technological...

Dissemination of the Linked-benefit Strategy in Sustainable Marketing

Multinationals wanting to sell eco-friendly products are advised by the green-marketing literature to apply a socalled linked-benefit strategy [1, 2, p.121], which describes attributes of a product (or service) that are positive for the environment and links those to benefits for the consumer (e.g. convenience, cost-savings). This paper reviews...

Aeroelastic tailoring using lamination parameters: Drag reduction of a Formula One rear wing

The aim of the present work is to passively reduce the induced drag of the rear wing of a Formula One car at high velocity through aeroelastic tailoring. The angle-of-attack of the rear wing is fixed and is determined by the required downforce needed to get around a turn. As a result, at higher velocity, the amount of downforce and related...

Materials and manufacturing processes of the Superbus

The Superbus is a new public transportation non polluting, fast, economic, and appealing vehicle developed in The Netherlands as proof of concept for the implementation of a new transportation system which includes totally new infrastructure and logistics. This new vehicle is sustainable, can transport passengers and goods from point to point...

Haptic gas pedal feedback for active car-following support

The research presented in this dissertation focuses on supporting drivers in the longitudinal control of their vehicle during car-following. The goal of the research is the human-centred development of a haptic gas pedal interface that comfortably supports drivers in maintaining a safe separation with a leading vehicle during car-following. Two...