The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
In marine archaeology, many artifacts made of metallic or organic material are found in different state of conservation depending of the environment in which they are discovered. Once brought to the surface for study or display purposes, the artifacts need to be treated properly otherwise they deteriorate in a short lapse of time. The fragility of organic artifacts and the volumetric variation caused...
We tested five 3D digitization systems and one method of 2D+ recording on one object: a human skull from the Royal Belgian Institute of Natural Sciences collection (RBINS). We chose a skull because it has both simple and complex structures and different materials such as bone and enamel within the same object. The results obtained with the different technologies were compared for 3D shape accuracy,...
This paper deals with the modeling and position control of an ElectroActive Polymer (EAP) actuator system consisting in a combination of an EAP membrane and a mass-spring biasing mechanism. First, a description of the biasing system is provided, and a physical-based dynamic model is derived for the whole system. Then, the model is used for the identification of an experimental actuator, and for the...
In this paper we describe designing and implementation of a powerful, fast and compact simple 3D modeler (SM3D). In addition to saving cost and time (due to high processing speed), 3D objects can be created with minimum system resources by using this application. Easy learning and using are other strengths of this application. Modularity using classification and applying Dynamic-Link Library files...
This paper demonstrates relevant physics and provides recommendations regarding thin sheet absorber material applications in enclosures of electronic circuitry. Sheet absorbers placed on the walls of an enclosure are studied herein both experimentally and through the full-wave numerical simulations. In practical applications, the applied absorbing patches need to be selected in terms of proper material...
Electronic commerce (EC) is characterized by keen competition. Therefore, understanding how to attract consumers to browse and purchase on the web sites becomes increasingly important to electronic retailers. In the EC context, salespeople are replaced by web interface. Therefore, web interface may influence consumers' product knowledge and purchase intention. The objective of this research is to...
First, it is introduced that the BIM technology in the paper in order to solve the problem of built drawings and the completion of settlement in the completion phase. Then, verifying the feasibility of BIM technology in the completion phase through judging whether that matches two conditions. The first condition is whether the completion model with BIM is integrity or not. The second is the BIM technology...
The term hap tic refers to the tactile sensation perceived by the user when he is manipulating objects in a Virtual Environment. These sensations are extremely important in Virtual Reality simulators for training medical and dental procedures with the goal of increasing the level of motor skills. Many tasks trained, such as teeth and bones drilling, are held in rigid bodies and require parts of the...
In this paper a miniature circuit breaker (MCB) is analyzed using a finite method analysis (FEA) software. Once the 3D model was implemented, a series of simulations were carried out in order to find out the forces that appear inside the electromechanical trip unit and what influences the plunger to trip faster. Also, the influence of the material nonlinearity is emphasized in order to understand...
Permittivity of granular type material (GTM) is determined by waveguide reflection/transmission method which is considered most accurate in dielectric material characterization. In this process, GTM is mixed with another host medium. In the simulation, GTM and host medium both are assumed to have known value of complex permittivity and GTM permittivity is extracted from the observed linear relationship...
Plasmoinc structures, in particularly plasmonic nano antennas are very attractive in many applications. From other side numerical simulations of plasmonic structures are very demanding and expensive in terms of memory and CPU time, making the selection of a suitable numerical method for the field computation important. The numerical problems are caused because optical nanostructures based on metal...
In this study, an analytical procedure to synthesize a biphasic composite panel with spherical inclusions is developed. The procedure is based on the knowledge of a frequency dependent Debye parameters associated to a homogeneous material with desired shielding performance. The proposed procedure is validated by applying the analytical expression to different biphasic composite structures with different...
A variety of internet services closely related with our daily lives are currently being provided due to the advances in information technology and computer industry. Among those services, virtual simulation applications can enable customers to experience various products before they purchase them. An example of such services is a virtual makeup simulation that allows customers to try cosmetics, hair...
Modern material handling systems (MHS) are complex systems which are controlled by various control units on different automation levels. The design of the MHS facility layout and the development of the control units require the application of different CAE tools but simulation and virtual commissioning does currently not play a significant role because there is no integrated simulation-based verification...
Recently, it has been researched to adopt the dual arm robot at the packaging and assembly line of an electric device such as a mobile phone. At the research area of the end-effector development, it is necessary to extract demanded functions and to allocate these functions to allowable numbers of end-of-arm-tool (EOAT). On allocating steps, it is often occurred that one EOAT must grip materials with...
In paper are presented main knowledge from the area of logistics, enterprise logistics and production logistics. On the base of theoretical knowledge in second part of the paper are described experiences from the application of logistics and simulation in the area of flexible manufacturing system design. The paper also introduces an example application of logistic flow optimization of a real flexible...
A circularly polarized microstrip metallic patch antenna made reusing and recycling materials from construction debris is proposed, designed, fabricated and validated in this paper. Such device is used in RFID systems operating at the 902–928MHz UHF band allocated for International Telecommunication Union, ITU, Region 2, that includes North and South America. The antenna is composed of two stacked...
This work describes the research activity in the Terafly project which aims at the development of an automated architecture for the inspection and measurement of industrial components. The project addresses flaw detection and analysis of para-aramid synthetic fiber components by means of Terahertz 3D tomographies and CAD models. This paper describes the stages of the system, from the model-to-object...
The reliability of wire bond is very significant due to its function of providing interconnection and signal passage to the integrated circuit. Wire bond shear test are utilized to evaluate the reliability and bond strength of bonded wires. In this study, the wire bond shear test is simulated. The effects of shear tool height on the stress response of bonded wires are examined through simulation....
A virtual-world environment becomes a truly engaging platform when users have the ability to insert 3D content into the world. However, arbitrary 3D content is often not optimized for real-time rendering, limiting the ability of clients to display large scenes consisting of hundreds or thousands of objects. We present the design and implementation of an automatic, unsupervised conversion process that...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.