TY - JOUR A1 - Khaled, W. A1 - Bruhns, Otto T. A1 - Reichling, S. A1 - Böse, Holger A1 - Baumann, Michael A1 - Monkman, Gareth J. A1 - Egersdörfer, Stefan A1 - Meier, Alexander A1 - Klein, Dagmar A1 - Freimuth, Herbert A1 - Ermert, Helmut T1 - A haptic system for virtual reality applications based on ultrasound elastography and electrorheological fluids JF - Acoustical Imaging Y1 - 2004 U6 - https://doi.org/10.1007/978-1-4020-2402-3_85 IS - 27 SP - 667 EP - 675 PB - Kluver Academic CY - Dordrecht & New York ER - TY - CHAP A1 - Khaled, W. A1 - Reichling, S. A1 - Bruhns, Otto T. A1 - Ermert, Helmut A1 - Monkman, Gareth J. A1 - Egersdörfer, Stefan A1 - Baumann, Michael A1 - Böse, Holger A1 - Freimuth, Herbert A1 - Tunayar, A. T1 - Palpation imaging using a haptic sensor actuator system for medical applications T2 - Actuator 2004 : 9th International Conference on New Actuators & 3rd International Exhibition on Smart Actuators and Drive Systems, 14-16 June 2004, Bremen, Germany Y1 - 2004 SP - 379 EP - 382 PB - HVG Hanseatische Veranstaltungs-GmbH CY - Bremen ER - TY - JOUR A1 - Klein, Dagmar A1 - Freimuth, Herbert A1 - Monkman, Gareth J. A1 - Egersdörfer, Stefan A1 - Meier, Alexander A1 - Böse, Holger A1 - Baumann, Michael A1 - Ermert, Helmut A1 - Bruhns, Otto T. T1 - Electrorheological Tactile Elements JF - Mechatronics N2 - The use of ultrasound systems for medical examination and diagnosis is nothing new. The extension of ultrasound techniques for real time elastographic analysis purposes represents a more recent development. Nevertheless, as they stand all such techniques rely on the interpretation of two-dimensional visual data displayed on a video screen. In reality however, a medical doctor will make as much use of exploratory touch as he or she does vision, making the simultaneous portrayal of both video and tactile information most desirable [Böse H, Monkman GJ, Freimuth H, Ermert H. Haptisches Sensor-Aktor-System uaf der grundlage der Echtzeitelastographie sowie von elktro- und magnetorheologischen Materialien “HASASEM” [3]. BMBF Antrag 01 IR A14D, Oktober 2000]. This paper discusses the preliminary tests and basic design parameters for single tactels using electrorheological fluids. The final aim is to produce a prototype three-dimensional tactile display comprising electrically switchable micro-machined cells whose mechanical moduli are governed by phase changes experienced by electrorheological fluids. This will be integrated with the latest elastographic ultrasonic sensor systems in order to present the human fingers with controllable surfaces capable of emulating biological tissue, muscle and bone. Y1 - 2005 U6 - https://doi.org/10.1016/j.mechatronics.2004.05.007 VL - 15 IS - 7 SP - 883 EP - 897 PB - Pergamon CY - Oxford ER - TY - JOUR A1 - Klein, Dagmar A1 - Rensink, D. A1 - Freimuth, Herbert A1 - Monkman, Gareth J. A1 - Egersdörfer, Stefan A1 - Böse, Holger A1 - Baumann, Michael T1 - Modelling the Response of a Tactile Array using an Electrorheological Fluids JF - Journal of Physics D: Applied Physics N2 - This paper reports the first step in the development of a tactile array suitable for the presentation of haptic information in virtual reality. The system is based on the electric field dependence of the viscosity of electrorheological fluids. The simulation, as well as the experimental realization of single tactels is described. The mathematical approach is based on the Eckart model (Eckart W 2000 Continuum Mech. Thermodyn. 12 341–62) and its validity is demonstrated by comparing the resulting yield stress with the experimental results from Wunderlich (2000 Dissertation Universität Erlangen-Nürnberg). Two different tactel designs are realized and the experimental results are compared with numerical simulation. The design of modification B is shown to be applicable for the realization of an actuator array with high spatial resolution. Y1 - 2004 U6 - https://doi.org/10.1088/0022-3727/37/5/023 SN - 1361-6463 SN - 0022-3727 VL - 37 IS - 5 SP - 794 EP - 803 PB - IOP Publ. CY - Bristol ER -