CRABI 12 Month Old Child

Available Product Lines

  • 921022-000-H (ATD Assembly)

Overview

The CRABI 12 Month Old was developed by FTSS and Denton to evaluate small child restraint systems in automotive crash environments, in all directions of impact, with or without air bag interaction. Basic anthropometry for this important new test device was taken from the University of Michigan Transportation Research Institute Report 85-23. Weight distribution and scaling methods for the infant were approved by the Society of Automotive Engineers' (SAE) Infant Dummy Task Group.

The dummy weighs 10.0Kg and has a 747MM standing or 480 MM sitting height. The Hybrid Ill-like neck and lumbar spine are laterally notched to reduce lateral stiffness. The shoulders have ample support for durability and human-like performance in areas where seatbelt webbing may be placed. In addition, rubber elements are used in each joint to improve biofidelity and to give CRABI infant-like range of motion.

The design meets all the SAE Infant  Dummy Task Group anthropometry,  biomechanical and instrumentation  requirements. The instrumentation design incorporates six load cells to provide load measurements at the occipital condyles,  cervical vertebrae-7, lumbar vertebrae-S,  shoulders and pubic locations. Accelerometers are used to measure head, chest and pelvic  acceleration and head angular acceleration. All instrumentation is easily accessed.

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.

Test Dummy Measurement Capabilities

  • Head Triaxial Acceleration
  • Head Angular Acceleration (1 channels)
  • Upper Neck Forces and Moments (8 channels)
  • Lower Neck Forces and Moments (6 channels)
  • Shoulder Forces (2 channels each)
  • Chest Triaxial Acceleration
  • Lumbar Spine Forces and Moments (6 channels)
  • Pelvic Triaxial Acceleration
  • Pelvic (Pubic) Forces (2 channels)

Technical Specifications

Instrumentation

Location Description Channels
Head:
2 Triaxial Accelerometer Pack
1 Accelerometer for angular acceleration
Ax, Ay, Az (used for HIC)
Az
Neck:
6-Axis Upper Neck Load Cell
6-Axis Lower Neck Load Cell
Fx, Fy, Fz, Mx, My, Mz
Fx, Fy, Fz, Mx, My, Mz
Shoulder: 2-Axis Shoulder Load Cell Fx, Fz
Thorax:
1 Triaxial Accelerometer Pack
Ax, Ay, Az
Lumbar Spine: 6-Axis Lumbar Spine Load Cell Fx, Fy, Fz, Mx, My, Mz
Pelvis:
1 Triaxial Accelerometer Pack
 

2-Axis Pubic Force Load Cell

Ax, Ay, Az
Fx, My
 

Test Equipment

The following fixtures are required to calibrate and set up this Dummy:
Location Description
Head:
Head Drop Test Fixture
Head Suspension Cables
Neck:
Neck Pendulum Test Fixture
Headform Assembly for the CRABI 12 Month Old Infant Neck Test.
Bracket, bib simulator and hardware included (less potentiometers)
Thorax:
Thorax Pendulum Test Fixture
Chest Probe Assembly, CRABI 12 Month Old Infant.
Includes suspension cables

Assembly Weights

Part  Weight (kg)  Weight (lbs)
Head 2.64 ± .05 5.82 ± .11
Neck 0.38 ± .03 0.84 ± .07
Torso 3.68 ± .10 8.11 ± .22
Arm, Left or Right 0.60 ± .03 1.32 ± .07
Leg, Left or Right 1.05 ± .03 2.31 ± .07
Total Weight 10.00 ± .30 22.05 ± .66

External Dimensions

Description  Dimension (in.)
Total Sitting Height 18.50 ± .30
Shoulder Pivot Height 11.19 ± .30
Hip Pivot Height 1.30 ± .20
Hip Pivot from Backline 1.78 ± .20
Shoulder Pivot from Backline 2.18 ± .20
Thigh Clearance 2.68 ± .20
Back of Elbow to Fingertip 7.68 ± .30
Shoulder Pivot to Elbow Flesh 5.20 ± .30
Elbow Rest Height 6.21 ± .30
Buttock to Knee Length 8.28 ± .30
Popliteal Height (ref. to seat) 5.76 ± .30
Knee Pivot Height 6.80 ± .30
Buttock Popliteal Length 6.00 ± .30
Chest Depth with Jacket 4.53 ± .30
Foot Length 3.84 ± .20
Stature 29.15 ± .50
Buttock to Knee Pivot Lenght 7.23 ± .20
Hip Breadth 6.54 ± .30
Shoulder Breadth 8.20 ± .30
Foot Breadth 1.74 ± .20
Chest Circumference with Jacket 18.31 ± .50
Waist Circumference 18.45 ± .50
Reference Location for Chest Circumference & Chest Depth 10.30 ± .20
Reference Location for Waist Circumference 2.40 ± .20