For assessment of safety, it is necessary to measure the maximum possible force exerted by a bone conduction device coupled to the human head. Calibration of bone conduction hearing aids and vibrators in the audiometric range is based on measurement of acceleration and force using an artificial mastoid. Extending the measurement to the high audio range was accomplished using a live head. To ass...

automobile body plays crucial role in preventing the collision energy transfer in severe accidents to the passengers. if the collision energy is dissipated or saved in bumper or chassis, the amount of damage to the occupants would be minimized. using novel laminated panel (fiber metal laminate) in auto body, and considering the characteristics such as high energy absorption, strength, high dent...

The dynamics of a platoon of adaptive cruise control vehicles is analyzed for a general mechanical response of the vehicle’s powertrain. Effects of acceleration-feedback control that were not previously studied are found. For small acceleration-feedback gain, which produces marginally string-stable behavior, the reduction of a disturbance (with increasing car number ) is found to be faster than...

To effectively improve the estimated level of railway vehicles’ vertical dynamic responses and provide a more suitable reference for selection its secondary suspension damping parameter, this paper has derived root mean square values analytical formulae car body acceleration, stroke, axle box action force vehicles under random excitation track closer to actual characteristics. The correctness i...

In order to study the influence of an integration time step on dynamic calculation a vehicle-track-bridge under high-speed railway, (VTB) coupled model is established. The accuracy and stability different speeds or track regularity states studied. irregularity further analyzed by using spectral characteristic sensitive wavelength. According results, disparity among effect VTB at very small. Hig...

Since the 1960 Child Safety Systems in cars have been developed. The 3 point safety belt for adults rated as one of the 10 most important inventions for mankind, the seat belt has saved more than 1.5 Million lives. As well children have to be secured in a car but the 3 point belt is designed for adults. A 27 kg child is forced forward with 1.200 kg at 48 kph impact velocity. Here vulnerable bod...

* Address all correspondence to this author. ABSTRACT The comfort assessment for car occupants is not an easy task to achieve. It is a matter of personal perceiving, thus a solution which may seem comfortable to one could be not to another. Moreover it is a field which requires knowledge both from science and medicine. The vibrational comfort analysis is the topic of this paper. There are diffe...

Car body deformation modeling plays a very important role in crash accident analyses, as well as in safe car body design. The determination of the energy absorbed by the deformation and the corresponding Energy Equivalent Speed can be of key importance, however their precise determination is a very difficult task. Although, using the results of crash tests, intelligent and soft methods offer an...

This analysis of time series of eye movements is a saccade-detection algorithm that is based on an earlier algorithm. It achieves substantial improvements by using an adaptive-threshold model instead of fixed thresholds and using the eye-movement acceleration signal. This has four advantages: (1) Adaptive thresholds are calculated automatically from the preceding acceleration data for detecting...

conclusions during car crashes, especially car rollover, unbelted occupants are more likely to sustain multiple severe injuries and death. law enforcement of the seat belt usage for all occupants (front and rear seat) is obligatory to reduce severe injuries sustained as a result of car accidents, especially in vehicles with low safety. results a total of 560 patients used seat belts (68.1%). th...