A. Chakraborty, A. Kundu, S. Chatterjee, and B. Gupta
West Bengal, India
This paper presents a novel design of single-bit RF MEMS phase shifter. The basic novelty introduced for phase shifter design in this case, is by scaling down of the lateral dimensions of the conventional RF MEMS shunt switch by 10 times. The Mechanical and Electromechanical analysis of the designed miniature RF MEMS fixed-fixed beam is performed using COMSOL Multiphysics v.3.5a as an FEM ...
G. Vijila, S. Vijayakumar, M. Alagappan, and A. Gupta
PSG College of Technology
Tamil Nadu, India
This paper projects a novel 3D capacitive accelerometer design to identify a severe accident and initiate airbag deployment systems. It will detect the rapid negative acceleration of the vehicle to avoid the severity of the collision. Such a device demands excellent performance in terms of sensitivity, noise immunity, linearity, bias and scale factor stability over time and environmental changes. ...
R. C. Thiagarajan
ATOA Scientific Technologies Private Limited, Bangalore, India
Conductive Composites such as carbon fiber reinforced composites are increasingly used in safety critical aerospace applications. The catastrophic macro structural failure of composite structures initiates from a micro level failure event such as fiber breaks. The ability to detect damage early on can improve the safety level and reliability of composite structures. A multilevel self-sensing ...
Time-Dependent Thermal Stress and Distortion Analysis During Additive Layer Manufacturing, by Powder Consolidation by Laser Heating
M.S. Yeoman, J. Sidhu
1. Continuum Blue Ltd., Tredomen Innovation & Technology Park, Tredomen, Ystrad Mynach, United Kingdom
BAE Systems, Advanced Technology Centre, Bristol, United Kingdom
A time-dependent COMSOL Multiphysics model of an additive manufacture process, which uses powder consolidation by laser heating was developed, providing a platform to better understanding the manufacture process & provide a tool to reduce resulting distortion & optimization of an additive manufacture process. The model simulates a high intense laser energy source moving along a pre-defined time ...
R. Costley, H. Diaz-Alvarez, M. McKenna, A. Miller
U.S. Army Engineer Research and Development Center, Vicksburg, MS, USA
Two finite element models have been developed to investigate the acoustic radiation from a Pratt truss train bridge. The first model was a time dependent structural model that determined the vibration response of the structure due to two wheels, representing a single axle, moving across the bridge at constant speed. This model was expanded to include multiple axles to represent a locomotive. The ...
L. Spicci, M. Cati
Esaote, Firenze, Italy
Ultrasound imaging probes are widely used for several types of diagnosis applications. In the present work we focus our attention on a disk-type probe, which is widely used in CW and PW operating conditions. In particular we present a 2D-axial symmetry FEM for the probe, capable to predict both the operative temperature values at different driving signal frequencies, both the heating dynamics. ...
J. Kundrata, A. Baric
Faculty of Electrical Engineering and Computing, University of Zagreb, Zagreb, Croatia
This paper presents the electrical and thermal analysis of an OLED module. The OLED module consists of the OLED tile and the DC-DC converter incorporated in its backplane. The DC-DC converter is realized as an integrated circuit and its inductor is embedded in the the backplane. The DC-DC converter is highly efficient, but a fraction of the electrical power is dissipated in the integrated circuit ...
S. Singh, N. Baheti, A. Tiwari
Institute of Engineering & Science, IPS Academy, Indore, Madhya Pradesh, India
Spray drying is a common drying technique in food industries to convert liquid to powder form. A good understanding on the dynamic behavior of the process is important to ensure proper control. The aim of this study is to develop empirical models for spray drying of whole milk powder and orange juice powder. A preliminary study on the effect of several inputs such as inlet air temperature, feed ...
L. Armellin, F. Gatelli, and G. Tanghetti
R&D Department, Metelli S.p.A., Cologne, BS, Italy
Ball joints are widely used in many applications. This paper describes the contact and kinematic analysis of an Rzeppa type constant-velocity joint (CV-joint). Starting from a conveniently simplified 3D model, at fixed joint angle of 45°, a CV-joint made of all “generic steel” components has been studied. Considering only a “perfect” geometry (i.e. not affected by ...
Multiphase, Dual Polymer Injection Molding and Cooling of an Open Cavity to Form both Distinct and Graduated Material Properties within a Complex Three-Dimensional Body
Continuum Blue Ltd, Forest Row, United Kingdom
With the advancement of medical devices and implants, many now require more advanced nonlinear, hyper-elastic materials such as elastomers to be extensively utilized in the body. This combined with the need to allow for considerably different, varying and graduated material responses within the three-dimensional device, poses a difficult challenge to manufacturing an elastomeric implant in a ...