Place one finger behind the diagonal section of the webbing at the height of the dummy sternum. Pull the webbing horizontally forward and away from the chest, and utilizing the force provided by the retractor mechanism only, allow it to freely retract in the direction of the upper anchorage. Repeat this step three times.
1. Back and seat pans The back and seat pans are constructed of reinforced plastic and metal; they simulate the human torso and thigh and are mechanically hinged at the H-point. A quadrant is fastened to the probe hinged at the H-point to measure the actual torso angle. An adjustable thigh bar, attached to the seat pan, establishes the thigh centreline and serves as a baseline for the hip angle quadrant.
2. Body and leg elements Lower leg segments are connected to the seat pan assembly at the T-bar joining the knees, which is a lateral extension of the adjustable thigh bar. Quadrants are incorporated in the lower leg segments to measure knee angles. Shoe and foot assemblies are calibrated to measure the foot angle. Two spirit levels orient the device in space. Body element weights are placed at the corresponding centres of gravity to provide seat penetration equivalent to a 76 kg male. All joints of the 3-D H machine should be checked for free movement without encountering noticeable friction.
1 For details of the construction of the 3-D H machine refer to SAE International (SAE), 000 Xxxxxxxxxxxx Xxxxx, Xxxxxxxxxx, Xxxxxxxxxxxx 00000, Xxxxxx Xxxxxx of America (SAE J826 1995 version). The machine corresponds to that described in ISO Standard 6549: 1999. Figure 5-1 Figure 5-2
1. Purpose Determination of compliance with the requirements of paragraph 5.5.2. of this Regulation.
Place one finger behind the diagonal section of the webbing at the height of the dummy sternum. Pull the webbing horizontally forward and away from the chest, and utilizing the force provided by the retractor mechanism only, allow it to freely retract in the direction of the upper anchorage. Repeat this step three times. Description of the three-dimensional H-point machine 0 (3‑D H machine)
1. Back and seat pans The back and seat pans are constructed of reinforced plastic and metal; they simulate the human torso and thigh and are mechanically hinged at the H‑point. A quadrant is fastened to the probe hinged at the H-point to measure the actual torso angle. An adjustable thigh bar, attached to the seat pan, establishes the thigh centreline and serves as a baseline for the hip angle quadrant.
2. Body and leg elements Lower leg segments are connected to the seat pan assembly at the T‑bar joining the knees, which is a lateral extension of the adjustable thigh bar. Quadrants are incorporated in the lower leg segments to measure knee angles. Shoe and foot assemblies are calibrated to measure the foot angle. Two spirit levels orient the device in space. Body element weights are placed at the corresponding centres of gravity to provide seat penetration equivalent to a 76 kg male. All joints of the 3-D H machine should be checked for free movement without encountering noticeable friction. Figure 5-1 3-D H machine elements designation Figure 5-2 Dimensions of the 3-D H machine elements and load distribution (Dimensions in millimetres)
1. Purpose Determination of compliance with the requirements of paragraph 5.5.2. of this Regulation.
