CRABI 6 Month Old Infant Dummy

 

Available Models

  • Humanetics - 910420-000

Overview

The 6 Month-Old CRABI dummy, has been developed at Humanetics 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 (SAE) Infant Dummy Task Group. The dummy weighs 17.2 pounds and has a 26.4 inches standing or 17.3 inches sitting height. The Hybrid Ill-like neck and lumbar spine are laterally notched to reduce lateral stiffness.

The shoulders have ample flesh 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 the CRABI infant-like range of motion.

The Humanetics design meets all the SAE Infant Dummy Task Group anthropometry, biomechanical and instrumentation requirements. The instrumentation design incorporates three 6- channel load cells to provide load measurements at the cervical-i, cervical-7 and lumbar-5 vertebrae locations. Accelerometers are used to measure head, chest and pelvic acceleration and head angular acceleration. All instrumentation is easily accessed.

Test Dummy Measurement Capabilities

  • Head Triaxial  Acceleration  Head Angular Acceleration (I channel)  Upper Neck Forces and Moments  (6 channels)  Lower Neck Forces and Moments
  • (6 channels)  Chest Triaxial Acceleration  Lumbar Spine Forces and  Moments (6 channels)  Pelvic Triaxial Acceleration

Technical Specifications

 

Assembly Weights

Part Target Weight (lb) Tolerance (+/-) Actual Weight (lb) Tolerance (+/-)
Head 4.65 0.05 4.65 0.10
Neck 0.63 0.01 0.84 (4) 0.05
Torso 6.68 0.01 6.50 (4) 0.15
Arms 1.87 0.02 1.85 0.10
Legs 3.37 0.03 3.50 0.30
Total Weight 17.20 0.17 17.20 0.50

External Dimensions

Description Target Dimension (in) Tolerance (+/-) Actual Dimension (in) Tolerance (+/-)
Height 26.40 0.24 26.30 0.30
Sitting Height 17.30 0.18 17.40 0.20
Head Breadth 4.70 0.12 4.70 0.20
Head Depth 6.10 0.15 6.10 0.20
Head Circumference 17.40 0.44 17.40 0.40
Head Height 5.60 0.15 5.80 0.20
Chin to back of head 7.10 0.18 6.80 0.20
Chin to Neck 1.70 0.04 1.70 0.10
Head Vertex to Occipital Condyles 4.00 0.04 4.00 0.10
Head Vertex to Lead CG 2.76 0.03 2.76 0.10
Head Back to head CG 3.54 0.03 3.54 0.10
Neck Breadth 2.50 0.06 2.70 0.10
Neck Circumference 8.70 0.22 5.90 0.10
Neck Length 3.20 0.08 2.70 0.10
Shoulder height (Seated) 11.40 0.12 11.40 0.20
Shoulder Breadth 7.70 0.19 7.70 0.20
Shoulder Depth 2.30 0.06 1.90 0.20
Shoulder-Elbow Length 5.10 0.13 5.10 0.20
Elbow-Hand Length 6.90 0.17 6.90 0.20
Upper Arm Circumferenceat Hid Biceps 5.30 0.13 5.30 0.20
Forearm Circumference 5.40 0.14 5.50 0.20
Chest Breadth 5.60 0.14 5.60 0.20
Chest Depth 4.00 0.10 4.00 0.20
Chest Circumference 16.70 0.42 16.70 0.40
Waist Breadth 5.10 0.13 5.40 0.20
Waist Circumference 15.10 0.38 16.70 0.20
Abdominal Depth (3)     4.70 0.20
Hip Breadth (Standing) 5.70 0.14 5.90 0.20
Hip Breadth (Seated) 6.10 0.15 5.90 0.20
Thigh Depth 2.50 0.60 2.70 0.10
Rump - Knee Length 6.70 0.17 6.70 0.20
Rump - Sole Length 11.60 0.29 11.60 0.30
Mid Thigh Circumference 8.30 0.21 8.60 0.10
Calf Circumference 6.40 0.14 6.80 0.10
Ankle Circumference 4.70 0.12 1.90 0.10