The Experts below are selected from a list of 1584 Experts worldwide ranked by ideXlab platform
P. Kubový - One of the best experts on this subject based on the ideXlab platform.
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whiplash Injury and Head Injury Criterion during deceleration
Journal of Biomechanics, 2012Co-Authors: K. Jelen, O. Fanta, P. KubovýAbstract:The aim of this study is to monitor and describe physically the natural response of the Head to rapid deceleration. The methodology of using an impact simulator was adopted for simulating a load which is applied to the passengers wearing a seat belt in a Head-on collision of a car at the speed of 30 km/h. There are two major mechanical causes of various mechanisms leading to Head injuries. Direct impact involving a collision of the Head with another solid object at an appreciable velocity, and a non-contact impact involving a sudden Head motion without direct contact with another solid object. Ruan et al [1994] studied the impact response of the human Head by a 3D finite element analysis. Willinger [1999] simulated anatomical details during deceleration. This study aims to reveal the issue of non-contact impacts.
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Whiplash Injury and Head Injury Criterion during Deceleration
Transactions on Transport Sciences, 2011Co-Authors: K. Jelen, O. Fanta, R. Billich, D. Hadraba, P. KubovýAbstract:Cervical spine injuries have become an urgent problem in modern society. Regardless of social status or background, the high rate of neck injuries is a serious healthcare issue worldwide. The cervical spine Injury is mainly caused by external impact and is termed as whiplash Injury. In addition, the Head also performs a whiplash movement during rapid deceleration. The aim of this study is to monitor and describe physically the natural response of the Head to rapid deceleration. The methodology of using an impact simulator was adopted for simulating a load which is applied to passengers wearing a seat belt in a Head-on collision of a car at the speed of 30 km/h. Furthermore, a series of comparative tests of two versions (impact with and without a blindfold) were conducted to determine the influence of vision and consciousness on risk and the seriousness of trauma and the results were compared with measurements on a dummy.
K. Jelen - One of the best experts on this subject based on the ideXlab platform.
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Influence of the front part of the vehicle and cyclist's sitting position on the severity of Head Injury in side collision
Acta of bioengineering and biomechanics, 2013Co-Authors: Ondřej Fanta, Jan Boucek, Dan Hadraba, K. JelenAbstract:An Injury of cyclists during a collision with a car is currently a neglected topic. Most research projects evaluate in detail the Injury of pedestrians, but with an increasing number of cyclists it will be necessary to devote more attention to their safety. This study is focused on the most common type of collision and offers insights into the biomechanics of cyclist’s Head Injury without the use of bicycle helmet. Initial mechanical and kinematic conditions that affect Head Injury Criterion (HIC) after a car hits a cyclist were determined using simulation software MADYMO. In relation to HIC, three different shapes of the front part of the car and three basic cyclist’s positions were compared.
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whiplash Injury and Head Injury Criterion during deceleration
Journal of Biomechanics, 2012Co-Authors: K. Jelen, O. Fanta, P. KubovýAbstract:The aim of this study is to monitor and describe physically the natural response of the Head to rapid deceleration. The methodology of using an impact simulator was adopted for simulating a load which is applied to the passengers wearing a seat belt in a Head-on collision of a car at the speed of 30 km/h. There are two major mechanical causes of various mechanisms leading to Head injuries. Direct impact involving a collision of the Head with another solid object at an appreciable velocity, and a non-contact impact involving a sudden Head motion without direct contact with another solid object. Ruan et al [1994] studied the impact response of the human Head by a 3D finite element analysis. Willinger [1999] simulated anatomical details during deceleration. This study aims to reveal the issue of non-contact impacts.
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Whiplash Injury and Head Injury Criterion during Deceleration
Transactions on Transport Sciences, 2011Co-Authors: K. Jelen, O. Fanta, R. Billich, D. Hadraba, P. KubovýAbstract:Cervical spine injuries have become an urgent problem in modern society. Regardless of social status or background, the high rate of neck injuries is a serious healthcare issue worldwide. The cervical spine Injury is mainly caused by external impact and is termed as whiplash Injury. In addition, the Head also performs a whiplash movement during rapid deceleration. The aim of this study is to monitor and describe physically the natural response of the Head to rapid deceleration. The methodology of using an impact simulator was adopted for simulating a load which is applied to passengers wearing a seat belt in a Head-on collision of a car at the speed of 30 km/h. Furthermore, a series of comparative tests of two versions (impact with and without a blindfold) were conducted to determine the influence of vision and consciousness on risk and the seriousness of trauma and the results were compared with measurements on a dummy.
Gordon Wyeth - One of the best experts on this subject based on the ideXlab platform.
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ICRA - Demonstrating the safety and performance of a velocity sourced series elastic actuator
2008 IEEE International Conference on Robotics and Automation, 2008Co-Authors: Gordon WyethAbstract:Actuators with deliberately added compliant elements in the transmission system are often described as improving the safety of the actuator at the detriment of the performance. We show that our variant of the series elastic actuator topology, the velocity sourced series elastic actuator, has well defined performance characteristics that make for improvements in safety and performance over conventional high impedance actuators. The improvement in performance was principally achieved by having tight velocity control of the DC motor that acts as the mechanical power source for the actuator. Results for performance are given for point to point transition times, while results for safety are based on empirical assessment of the Head Injury Criterion during collisions.
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Assessing the safety of a velocity sourced series elastic actuator using the Head Injury Criterion
2007Co-Authors: Gordon Wyeth, Geoffrey R. WalkerAbstract:The Velocity Sourced Series Elasic Actuator has been proposed as a method for providing safe force or torque based acutation for robots without compromsing the actuator performance. In this paper we assess the safety of Velocity Sourced Series Elastic Actuators by measuring the Head Injury Criterion scores for collisions with a model Head. The study makes a comparitive analysis against stiff, high impedance actuation using the same motor without the series elastic component, showing that the series elastic component brings about a massive reduction in the chance of Head Injury. The benefits of a collision detection and safe reaction system are shown to be limited to collisions at low speeds, providing greater interaction comfort but not necessarily contributing to safety from Injury.
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Assessing the safety of a velocity sourced series elastic actuator
2007Co-Authors: Gordon Wyeth, Geoffrey R. WalkerAbstract:The Velocity Sourced Series Elastic Actuator has been proposed as a method for providing safe force or torque based actuation for robots without compromising the actuator performance. In this paper we assess the safety of Velocity Sourced Series Elastic Actuators by measuring the Head Injury Criterion scores for collisions with a model Head. The study makes a comparative analysis against stiff, high impedance actuation using the same motor without the series elastic component, showing that the series elastic component brings about a massive reduction in the chance of Head Injury. The benefits of a collision detection and safe reaction system are shown to be limited to collisions at low speeds, providing greater interaction comfort but not necessarily contributing to safety from Injury.
Geoffrey R. Walker - One of the best experts on this subject based on the ideXlab platform.
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Assessing the safety of a velocity sourced series elastic actuator using the Head Injury Criterion
2007Co-Authors: Gordon Wyeth, Geoffrey R. WalkerAbstract:The Velocity Sourced Series Elasic Actuator has been proposed as a method for providing safe force or torque based acutation for robots without compromsing the actuator performance. In this paper we assess the safety of Velocity Sourced Series Elastic Actuators by measuring the Head Injury Criterion scores for collisions with a model Head. The study makes a comparitive analysis against stiff, high impedance actuation using the same motor without the series elastic component, showing that the series elastic component brings about a massive reduction in the chance of Head Injury. The benefits of a collision detection and safe reaction system are shown to be limited to collisions at low speeds, providing greater interaction comfort but not necessarily contributing to safety from Injury.
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Assessing the safety of a velocity sourced series elastic actuator
2007Co-Authors: Gordon Wyeth, Geoffrey R. WalkerAbstract:The Velocity Sourced Series Elastic Actuator has been proposed as a method for providing safe force or torque based actuation for robots without compromising the actuator performance. In this paper we assess the safety of Velocity Sourced Series Elastic Actuators by measuring the Head Injury Criterion scores for collisions with a model Head. The study makes a comparative analysis against stiff, high impedance actuation using the same motor without the series elastic component, showing that the series elastic component brings about a massive reduction in the chance of Head Injury. The benefits of a collision detection and safe reaction system are shown to be limited to collisions at low speeds, providing greater interaction comfort but not necessarily contributing to safety from Injury.
O. Fanta - One of the best experts on this subject based on the ideXlab platform.
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whiplash Injury and Head Injury Criterion during deceleration
Journal of Biomechanics, 2012Co-Authors: K. Jelen, O. Fanta, P. KubovýAbstract:The aim of this study is to monitor and describe physically the natural response of the Head to rapid deceleration. The methodology of using an impact simulator was adopted for simulating a load which is applied to the passengers wearing a seat belt in a Head-on collision of a car at the speed of 30 km/h. There are two major mechanical causes of various mechanisms leading to Head injuries. Direct impact involving a collision of the Head with another solid object at an appreciable velocity, and a non-contact impact involving a sudden Head motion without direct contact with another solid object. Ruan et al [1994] studied the impact response of the human Head by a 3D finite element analysis. Willinger [1999] simulated anatomical details during deceleration. This study aims to reveal the issue of non-contact impacts.
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Whiplash Injury and Head Injury Criterion during Deceleration
Transactions on Transport Sciences, 2011Co-Authors: K. Jelen, O. Fanta, R. Billich, D. Hadraba, P. KubovýAbstract:Cervical spine injuries have become an urgent problem in modern society. Regardless of social status or background, the high rate of neck injuries is a serious healthcare issue worldwide. The cervical spine Injury is mainly caused by external impact and is termed as whiplash Injury. In addition, the Head also performs a whiplash movement during rapid deceleration. The aim of this study is to monitor and describe physically the natural response of the Head to rapid deceleration. The methodology of using an impact simulator was adopted for simulating a load which is applied to passengers wearing a seat belt in a Head-on collision of a car at the speed of 30 km/h. Furthermore, a series of comparative tests of two versions (impact with and without a blindfold) were conducted to determine the influence of vision and consciousness on risk and the seriousness of trauma and the results were compared with measurements on a dummy.
