SAE J 2858-2017 Hybrid III Ten-Year-Old Child Dummy User-s Manual.pdf

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1、_ SAE Technical Standards Board Rules provide that: “This report is published by SAE to advance the state of technical and engineering sciences. The use of this report is entirely voluntary, and its applicability and suitability for any particular use, including any patent infringement arising there

2、from, is the sole responsibility of the user.” SAE reviews each technical report at least every five years at which time it may be revised, reaffirmed, stabilized, or cancelled. SAE invites your written comments and suggestions. Copyright 2017 SAE International All rights reserved. No part of this p

3、ublication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior written permission of SAE. TO PLACE A DOCUMENT ORDER: Tel: 877-606-7323 (inside USA and Canada) Tel: +1 724-776-497

4、0 (outside USA) Fax: 724-776-0790 Email: CustomerServicesae.org SAE WEB ADDRESS: http:/www.sae.org SAE values your input. To provide feedback on this Technical Report, please visit http:/standards.sae.org/J2858_201710 SURFACE VEHICLE INFORMATION REPORT J2858 OCT2017 Issued 2017-10 Hybrid III Ten-Yea

5、r-Old Child Dummy Users Manual RATIONALE This document was issued to provide an SAE manual for the 10-year-old ATD, which has not been previously published. FOREWORD Government and industry researchers identified a need for a large-sized child dummy in 2000. An average ten-year-old was selected as t

6、he most appropriate size based on a study by Klinich et al., (Klinich, K. D.; Pritz, H. B.; Beebe, M. S.; Welty, K. E. 1994. Survey of older children in automotive restraints. Thirty-eighth Stapp Car Crash Conference Proceedings. pp. 245-264. SAE Report No. SAE 942222.) The Hybrid III Family Task Gr

7、oup met to define the size, weight, impact response characteristics and response measurements for a 10-year-old child dummy which would be similar in design to the midsize adult male Hybrid III dummy. Some variations from this design were included to address the multiple applications expected for th

8、is size of dummy, which include: testing child restraint systems at the upper end of the weight limits studying performance of restraint systems in vehicles with and without additional child restraint systems evaluating airbag deployment scenarios school-bus testing pedestrian impact testing The siz

9、e and weight specifications of the Hybrid III 10-year-old dummy are generally based on the average characteristic dimensions taken from anthropometry studies of 10-year-old boys and girls. The biofidelic impact response requirements for head, neck, chest, and knees were extrapolated from the corresp

10、onding Hybrid III adult male responses taking into account the differences in size, weight, and tissue material properties that exist between children and adults. SAE INTERNATIONAL J2858 OCT2017 Page 2 of 47 TABLE OF CONTENTS 1. SCOPE 4 1.1 Manual Overview 4 1.1.1 Appendices . 4 1.1.2 Other SAE Docu

11、ments 4 1.1.3 Test Definitions . 4 1.1.4 Part Numbers 4 1.2 Construction 4 1.3 Clothing . 5 1.4 Instrumentation . 5 2. REFERENCES 7 2.1 Applicable Documents 7 2.1.1 SAE Publications . 7 3. ABBREVIATIONS . 7 4. DISASSEMBLY AND ASSEMBLY PROCEDURES . 7 4.1 Dummy Posture 7 4.2 Head 9 4.3 Neck 10 4.4 Upp

12、er Torso/Arms . 13 4.4.1 Spine Box Disassembly 16 4.5 Lower Torso/Legs . 18 5. CERTIFICATION TEST PROCEDURES 25 5.1 Head Drop Test . 25 5.2 Neck Tests 27 5.3 Thorax Impact Test . 31 6. INSPECTION TEST PROCEDURES . 34 6.1 External Measurements 34 6.2 Mass Measurements . 38 6.3 Knee Impact Test 39 6.4

13、 Torso Flexion Test 40 7. NOTES 43 7.1 Revision Indicator 43 APPENDIX A ACCELEROMETER HANDLING GUIDELINES . 44 APPENDIX B GUIDELINES FOR REPAIRING FLESH 46 APPENDIX C JOINT ADJUSTMENT PROCEDURES 47 Figure 1 Instrumentation locations 6 Figure 2 Front view of hybrid III 10YO 8 Figure 3 Side view of hy

14、brid III 10YO in upright posture . 8 Figure 4 Side view of hybrid III 10YO in slouched posture . 9 Figure 5 Optional accelerometer block for the 10YO dummy head 9 Figure 6 Remove arm/shoulder assembly to gain access to neck 10 Figure 7 Left BHCS attaching neck assembly to spine box 11 Figure 8 Right

15、 BHCS and adjusting shoulder bolt attaching neck assembly to spine box . 11 Figure 9 Right view showing neck angles achieved when placing adjusting shoulder bolt in different positions . 12 Figure 10 Components of neck assembly . 12 Figure 11 Components of joint between spine box and shoulder suppor

16、t assembly 13 Figure 12 Removing upper torso from lower torso 13 Figure 13 Removal of front rib end stiffener 14 Figure 14 Threaded rib strip on interior of ribs 14 Figure 15 Back rib stiffeners and posterior lower thorax accelerometer mount 15 Figure 16 Location of upper posterior thorax accelerome

17、ter 15 SAE INTERNATIONAL J2858 OCT2017 Page 3 of 47 Figure 17 Removing stops from chest deflection transducer assembly 16 Figure 18 Thorax instrumentation block used with chest deflection transducer assembly . 16 Figure 19 Removal of shoulder stop components . 17 Figure 20 Shoulder assembly 17 Figur

18、e 21 Components of arm to shoulder joint 18 Figure 22 Remove lumbar spine from pelvis using two SHCS accessible from the top . 19 Figure 23 Removal of pelvic instrumentation block. the two remaining SHCS that attach the lumbar spine assembly are also shown. . 19 Figure 24 Exploded view of lumbar spi

19、ne assembly . 20 Figure 25 Adjustment of the lumbar spine angle . 20 Figure 26 Lumbar spine assembly, with lumbar adjustment angles marked, and designations for Standard Posture (SP) and Standard Slouched (SS) indicated . 20 Figure 27 Orientation of right iliac load cell . 21 Figure 28 Access for in

20、stalling iliac load cells . 21 Figure 29 Shoulder bolt connects thigh to the femur component . 22 Figure 30 Three SCHS, accessible through three rearmost holes in dummy flesh, connect the hip joint to the pelvis . 22 Figure 31 The thigh and knee assembly are connected by the femur load cell replacem

21、ent . 23 Figure 32 Exploded view of knee assembly 23 Figure 33 Exploded view of lower leg . 24 Figure 34 Exploded view of ankle joint 25 Figure 35 Head drop test set-up specifications . 27 Figure 36 Neck pendulum arm specifications . 28 Figure 37 Instrumentation setup for neck flexion test . 30 Figu

22、re 38 Thorax impact test setup . 33 Figure 39 Hysteresis calculation . 34 Figure 40 External dimensions 36 Figure 41 Knee impact test setup 40 Figure 42 Example of torso flexion test set-up 41 Figure 43 Example of torso flexion pull bracket 42 Figure 44 Front view of abdomen set up . 42 Figure 45 Si

23、de view of abdomen set up 43 Table 1 Pendulum impulse specification for neck flexion test . 30 Table 2 Pendulum impulse specification for neck extension test 31 Table 3 External dimensions 37 Table 4 Assembly masses . 38 SAE INTERNATIONAL J2858 OCT2017 Page 4 of 47 1. SCOPE This users manual covers

24、the Hybrid III 10-year old child test dummy. The manual is intended for use by technicians who work with this test device. It covers the construction and clothing, assembly and disassembly, available instrumentation, external dimensions and segment masses, as well as certification and inspection tes

25、t procedures. It includes guidelines for handling accelerometers, guidelines for flesh repair, and joint adjustment procedures. Finally, it includes drawings for some of the test equipment that is unique to this dummy. 1.1 Manual Overview 1.1.1 Appendices Several guidelines and procedures apply to v

26、arious parts throughout the dummy, and are included in the appendices for easier reference. First, when handling an instrumented dummy, improper techniques can damage instrumentation, particularly accelerometers. Appendix A contains guidelines for safe handling of instrumented dummies. Second, the v

27、inyl flesh of dummies can be damaged, but is often repairable. Appendix B contains instructions for repairing dummy flesh. Third, procedures for adjusting the joints throughout the dummy are included in Appendix C. 1.1.2 Other SAE Documents In addition to the attached appendices, other SAE publicati

28、ons are particularly useful when working with the Hybrid III dummies. SAE J211-1 provides the most recent guidelines and procedures for dummy instrumentation and filtering. SAE Information Report J1733 illustrates the instrumentation available for the Hybrid III dummies, along with descriptions of h

29、ow to apply the positive right-hand rule sign convention. 1.1.3 Test Definitions Test procedures are classified as either Certification Tests or Inspection Tests. Certification tests are specified for dummy responses which could affect dummy measurements that are used by governments and safety engin

30、eers to assess occupant injury potential. Certification tests are performed by the dummy manufacturer to assure that a new component or assembly meets the SAE specified response requirements. The crash dummy user will periodically perform the certification tests to assure the dummy is maintained at

31、the SAE specified performance levels. Inspection tests are supplemental to the certification tests to ensure that a component meets its design intent. They are performed by the dummy manufacturer on new parts. The dummy user may conduct inspection tests when a part is damaged or replaced. 1.1.4 Part

32、 Numbers All part numbers in this manual refer to the drawing package in the docket of the National Highway Traffic Safety Administration. Copies of the drawing package for this dummy can be obtained from Reprographic Technologies, www.repro-, 18810 Woodfield Rd., Gaithersburg MD 20879, (301)-670-78

33、74. 1.2 Construction One-piece cast aluminum skull with removable vinyl head and cap skins. The vinyl skin has been tuned to give human-like response for forehead impacts. The head is the same one used in the Hybrid III small female dummy. A rubber segmented neck that has been tuned to give human-li

34、ke angle versus moment response in dynamic flexion (forward bending) and extension (rearward bending) articulations. Neck can be adjusted to four different positions from 0 to 22. Cable through the necks longitudinal axis to increase the necks durability to high axial loads. Six spring steel ribs wi

35、th polymer-based damping materials to provide the chest with a human-like force-deflection response and a minimum deflection space of 60 mm. Top and bottom rib stops to control the vertical movement of the rib cage. SAE INTERNATIONAL J2858 OCT2017 Page 5 of 47 Two methods available for chest deflect

36、ion measurement: a traditional ball-slider rotary potentiometer mechanism, as well as the IR-TRACC. More humanlike shoulder shape. Zippered chest jacket for easy removal. Cylindrical rubber lumbar spine. Pelvis and abdominal assembly has a seated design with vinyl skin and foam flesh molded over an

37、aluminum pelvis casting. Features have been incorporated to allow the dummy to be seated in a humanlike slouched posture when appropriate. The thighs contain ball-jointed femurs and retaining rings for hip pivot joint. A knee insert under a vinyl knee impact surface controls impact response. The fle

38、sh has a more realistic seated cross section. 1.3 Clothing When used in testing, the dummy should wear shirt (childrens size 10 to 12) and pants (childrens 14 to 16) which are thermal knit, waffle weave, 50%/50% polyester and cotton underwear or equivalent. The neckline should be small enough to pre

39、vent contact between a shoulder belt and the dummys skin. The pants should end above the dummys knee. The shirt and pants should each weigh no more than 0.14 kg (0.31 pound). The shoes should be childrens size 2-1/2 wide leather athletic shoe. Each shoe weighs 0.59 kg 0.05 kg (1.30 pounds 0.10 pound

40、). 1.4 Instrumentation The following is the instrumentation which the SAE Task Group agreed would be needed to evaluate child restraints and air bag interactions with children of this size, also illustrated in Figure 1: Three uniaxial accelerometers in the head Two tilt sensors in the head Six-chann

41、el upper neck load cell Six-channel lower neck load cell Chest Deflection Rotary Potentiometer or IR-TRACC Two accelerometers on the sternum Two accelerometers at the back of the spine box Triaxial accelerometers in the upper torso and pelvis Two-channel shoulder load cells Six-channel lumbar spine

42、load cell Two-channel anterior superior iliac spine load cells Six-channel femur load cell (single axis available) Six-channel leg load cells at mid shaft (single axis available) SAE INTERNATIONAL J2858 OCT2017 Page 6 of 47 Figure 1 - Instrumentation locations SAE INTERNATIONAL J2858 OCT2017 Page 7

43、of 47 2. REFERENCES 2.1 Applicable Documents The following publications form a part of this specification to the extent specified herein. Unless otherwise indicated, the latest issue of SAE publications shall apply. 2.1.1 SAE Publications Available from SAE International, 400 Commonwealth Drive, War

44、rendale, PA 15096-0001, Tel: 877-606-7323 (inside USA and Canada) or +1 724-776-4970 (outside USA), www.sae.org. SAE J211-1-1 Instrumentation for Impact Test - Part 1 - Electronic Instrumentation SAE J211-1-2 Instrumentation for Impact TestPart 2: Photographic Instrumentation SAE J1733 Sign Conventi

45、on for Vehicle Crash Testing SAE J2517 Hybrid III Family Chest Potentiometer Calibration Procedure 3. ABBREVIATIONS Threaded fastener abbreviations used in manual: 3.1 SHCS Socket Head Cap Screw 3.2 FHCS Flat Head Cap Screw 3.3 BHCS Button Head Cap Screw 3.4 SHSS Socket Head Shoulder Screw 3.5 SSCP

46、Socket Screw, Cup Point 4. DISASSEMBLY AND ASSEMBLY PROCEDURES 4.1 Dummy Posture The Hybrid III 10YO has an adjustable neck and lumbar spine to allow a variety of postures. The neck angle can be set to 0, 8, 16, or 23 relative to the spine box. The lumbar spine can be adjusted from 0 to 24 relative

47、to the top of the pelvis in increments of 4. Standard upright dummy posture, shown in Figures 2 and 3, is achieved by setting the neck angle at 16 and the lumbar angle at 12. A standard slouched posture, shown in Figure 4, is achieved by setting the neck angle to 23 and the lumbar angle to 0. Other

48、slouched postures are also possible. SAE INTERNATIONAL J2858 OCT2017 Page 8 of 47 Figure 2 - Front view of Hybrid III 10YO Figure 3 - Side view of Hybrid III 10YO in upright posture SAE INTERNATIONAL J2858 OCT2017 Page 9 of 47 Figure 4 - Side view of Hybrid III 10YO in slouched posture 4.2 Head The

49、head of the 10YO dummy is the same one used on the Hybrid III small female dummy. The small female accelerometer block may be used with the 10YO. However, there is a different accelerometer block available for the 10YO that allows mounting of tilt sensors (Figure 5). Figure 5 - Optional accelerometer block for the 10YO dummy head SAE INTERNATIONAL