Hybrid III 10 Year Old Child Dummy

Available Product Lines

  • 420-0000-H (ATD Assembly)

Overview

Two recent events have influenced the development of the Hybrid III 10 year old crash dummy. In May of 2000, NHTSA issued its final rulemaking for the upgrade to FMVSS208. One option of the regulation requires the passenger airbag to be deactivated if a child representing a typical six year old or smaller occupies the front seat, while the airbag must be activated for a small female or larger. This leaves the population of children that fall between a six year old and a small female who could be exposed to an inflating airbag. The Hybrid III 10 year old is designed to represent this population for airbag OOP (Out of Position) testing to evaluate the potential for injury from deploying airbags for those crashes while the airbag is not deactivated. The dummy will be an important part of due care test matrices.

In June 2000, the SAE Hybrid Dummy Family Task Group provided specifications for the dummy and has since overseen the development of the 10 year old.

In November 2000, the Transportation Recall Enhancement Accountability and Documentation (TREAD) Act was signed into law in the United States, calling for the Secretary of Transport to initiate rulemaking for the purpose of improving the safety of child restraints. NHTSA is required to consider more comprehensive testing of child restraints, including booster seats and a 10 year old crash dummy of Hybrid III design.

NHTSA is to consider modifying FMVSS213 and must develop a new consumer information program for child restraints. The Hybrid III 10 year old is expected to be included in NHTSA rulemaking in the next year, under the provision of the TREAD Act.

Simulation Models

Humanetics offers highly detailed and fully validated Finite Element Models of its dummies in the codes LS-DYNA, PAM-CRASH, ABAQUS and RADIOSS, along with FE modeling consultancy services.

Dummy Features

Head and Neck

The head is the same as the Hybrid III 5th Small Female. The skull is a two-piece aluminum casting with a removable vinyl skin certified to a head drop impact test. A triaxial accelerometer pack located at the head center of gravity enables the calculation of HIC. The neck is flexible, molded butyl rubber construction with a center cable. An adjustable lower neck bracket allows the head and neck to be positioned in the standing, seated erect, reclined and slouched postures. The neck is calibrated to flexion and extension moment/rotation corridors. Optional six-axis upper and lower neck load cells are available.

Upper Torso

A steel spine box supports six high-strength steel ribs bonded to polymer based damping material. A combined clavicle and scapula aluminum shoulder is sloped for improved shoulder belt routing. A urethane bib and aluminum/nylon sternum carry accelerometers for measurement of Viscous Criterion in OOP airbag testing. Vertical motion of the ribs is limited by rib guides. To measure chest deflection, the dummy is fitted with the rotary potentiometer and transducer arm as standard. Optionally, the thorax can be fitted with two IR-Traccs for high rate point-to-point deflection measurement. The IR-Traccs are fitted with rotary potentiometers at the pivot to measure lateral rotation. The upper torso is certified to thorax pendulum impact and lumbar flexion tests. The arms are vinyl skin over urethane foam with a welded steel skeleton. Optional shoulder load cells can directly measure applied belt loads.

Lower Torso

A cylindrical rubber lumbar spine with center cable mounts on an optional six-axis lumbar load cell. An adjustable lumbar bracket allows for 25 degrees of pre-positioning. The pelvis assembly is vinyl skin over urethane foam construction molded in a semi-slouched seated position. The pelvic bone is an aluminum casting with optional biaxial load cells on each ilium. A triaxial accelerometer pack mounts in the rear of the pelvis. The legs are vinyl skin over urethane foam molded over a welded steel skeleton.

Technical Specifications

Instrumentation

All instrumentation is optional except for the chest deflection potentiometer. Three (3) optional tilt sensors in the head, chest and pelvis are available to measure Rx and Ry for pre-test positioning. The standard dummy is delivered with structural replacements for the load cells.

Location Description Channels
Head:
Triaxial Accelerometer Pack
One (1) Tilt Sensor
Ax, Ay, Az (HIC)
Rx, Ry
Neck:
Six-Axis Upper Neck Load Cell
Six-Axis Lower Neck Load Cell
Fx, Fy, Fz, Mx, My, Mz
Fx, Fy, Fz, Mx, My, Mz
Thorax:
Triaxial Accelerometer pack
Two (2) Spine Accelerometers
One (1) Tilt Sensor
Ax, Ay, Az (Chest Accel)
Ax opposite Ribs 1 & 6 (V*C)
Rx, Ry
Sternum:
Two (2) Accelerometers
Two (2) IR-TRACCs Chest Defl
Ax, Ay, Az
Upper Dx, Lower Dx
Lumbar Spine: Six-Axis Lumbar Spine Load Cell Fx, Fy, Fz, Mx, My, Mz
Pelvis:
Triaxial Accelerometer Pack
Two-Axis ASIS Load Cells
One (1) Tilt Sensor
Ax, Ay, Az
Fx, Fx (upper & lower)
Rx, Ry
Femur:
Uniaxial Femur Load Cell
Six-Axis Femur Load Cell
Fx (one per leg)
Fx, Fy, Fz, Mx, My, Mz
 

Test Equipment

The following fixtures are required to calibrate and set up this Dummy:
Location Description
Head: Head Drop Test
Neck: 
Neck Pendulum
Neck Apater Plate
Thorax:
Thorax Impact Fixture
Chest Probe
Chest Depth Gage
H-Point Locator
Torso:
Torso Flexion Test Fixture
Pull Bracket Assembly
Knee:
Knee Impact Fixture
Femur Load Cell Adaptor
Knee Impact Probe
Ext. Dimesions: External Dim. Seat

Assembly Weights

Part Weight (lb) Tolerance (+/-)
Head: 8.23 0.10
Neck: 1.77 0.10
Upper Torso: 17.94 0.30
Lower Torso: 19.21 0.30
Upper Leg, Right: 5.90 0.15
Upper Leg, Left: 5.90 0.15
Lower Leg, Right: 4.92 0.15
Lower Leg, Left: 4.92 0.15
Foot, Right: 0.90 0.10
Foot, Left: 0.90 0.10
Upper Arm, Right:  1.78 0.10
Upper Arm, Left: 1.78 0.10
Forearm, Right: 1.35 0.10
Forearm, Left: 1.35 0.10
Hand, Left:  0.38 0.10
Hand, Right: 0.38 0.10
Total Weight:  77.61 2.00

External Dimensions

Description Dimension (in) Tolerance (+/-)
Total Sitting Height 28.5 0.5
Should Pivot Height 15.4 0.3
Hip Pivot Height 3.31 0.2
Hip Pivot from Backline   5.44 0.2
Shoulder Pivot from Backline 3.35 0.2
Thigh Clearance 4.25 0.3
Back of Elbow to Wrist Pivot 9.25 0.3
Should Pivot From Backline 1.90 0.1
Shoulder to Elbow Length 10.75 0.3
Elbow Rest Height   5.45 0.4
Buttock to Knee Length  18.00 0.4
Popliteal Height 13.40 0.4
Knee Pivot to Floor Height 14.80 0.3
Buttock Popliteal Length 14.50 0.4
Check Depth w/o Jacket 6.50 0.3
Foot Length 7.70 0.3
Buttock to Knee Pivot Length 16.50 0.4
Head Breadth  5.60 0.2
Head Depth 7.20 0.2
Hip Breadth 10.40 0.3
Shoulder Breadth 12.37 0.3
Foot Breadth  3.00 0.3
Head Circumference  21.20 0.4
Chest Circumference w/ Jacket  27.50 0.5
Waist Circumference 28.00 0.5
Ref. Loc. Chest Circumference 13.50 0.2
Ref. Loc. Waist Cirumference 5.80 0.2