Head excursion Sample Clauses

The "Head excursion" clause defines the permissible range of movement for a person's head, typically in the context of safety testing for vehicles or protective equipment. It sets specific limits on how far the head can move forward, backward, or sideways during an impact or crash scenario, often measured in millimeters or inches. By establishing these boundaries, the clause ensures that safety devices like seat belts or helmets effectively restrain the head, reducing the risk of injury and ensuring compliance with safety standards.
Head excursion no part of the head of the dummy shall pass beyond the planes FD, FG and DE, as shown in figure 2 below. This shall be judged up to 300 ms or the moment that the dummy has come to a definitive standstill whatever occurs first. Except when testing using Q6 or Q3 dummy where the value in relation to the FD plane is 840 mm.
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Head excursion no part of the head of the dummy shall pass beyond the planes FD, FG and DE, as shown in figure 2 below. This shall be judged up to 300 ms or the moment that the dummy has come to a definitive standstill whatever occurs first. In the case there is a contact of such an Enhanced Child Restraint System with the 100 mm diameter bar and all injury assessment and dummy’s head displacement criteria are met, there shall be one further dynamic test (front impact) with the heaviest dummy intended for the given range of size indication and without the 100 mm diameter bar; the requirements for this test are that all criteria other than forward displacement shall be met.
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Head excursion no part of the head of the manikin shall not pass beyond the planes FD, FG and DE, as shown in Figure 4 below. This shall be judged up to 300 ms or the moment that the manikin has come to a definitive standstill whatever occurs first. In the case there is a contact of such a child restraint with the 100 mm diameter bar and all performance injury assessment and manikin’s head displacement criteria are met, there shall be one further dynamic test (front impact) with the heaviest dummy intended for such child restraint the given iSize indication and without the 100 mm diameter bar; the requirements for this test are that all criteria other than forward displacement the criteria of paragraph 7.1.4.2. (child restraint integrity) and paragraph 7.1.4.4.1.2.1. (head exposure) are met. Steel tube 500 x 100 x 90 E Steel tube 500 x ∅100 x ∅90 C r G Dimensions in mm 700 800 380 D F 6.6.4.4.2. Child restraints of the "specific vehicle" category: when tested in a complete vehicle or a vehicle body shell, the head shall not come into contact with any part of the vehicle. However, if there is contact, the speed of impact of the head shall be less than 24 km/h and the part contacted shall meet the requirements of the energy absorption test laid down in Regulation No. 21, Annex 4. the head impact criterion HIC and the Head Acceleration 3ms shall be used as assessment criteria. In tests with complete vehicles it shall be possible to remove the manikins from the child restraint without the use of tools after the test.
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