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Child Crash Dummy Injury Assessment and CRS Interaction

30 Chapters
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01
Course overview
scope, technical context, and the role of child crash dummies in CRS safety assessment.
technicalCRS
02
Child occupant anatomy and injury biomechanics
scaling principles, injury tolerances, and AIS coding relevant to dummy design.
occupantbiomechanics
03
Overview of child restraint systems (CRS)
categories, installation modes, and regulatory frameworks (FMVSS 213, ECE R44/R129).
restraintCRS
04
Anthropomorphic test devices (ATDs) for children
history, families (Hybrid III 3-year-old, Q-series, CRABI), and key design differences.
AnthropomorphicATDs
05
Dummy instrumentation
accelerometers, load cells, potentiometers, and data acquisition chains for injury metrics.
instrumentationaccelerometers
06
Injury criteria for child occupants
HIC, BrIC, Nij, chest deflection, abdominal pressure, and their derivation from dummy measurements.
criteriaoccupants
07
Calibration and certification of child dummies
test procedures, tolerances, and frequency per regulatory standards.
Calibrationcertification
08
Sled testing fundamentals
pulse generation, deceleration sleds, and test setup for CRS evaluation with child dummies.
generationdeceleration
09
Frontal impact test protocols
FMVSS 213, ECE R44/R129 frontal, and dummy positioning for driver and passenger airbag interactions.
protocolsFMVSS
10
Side impact test protocols
ECE R129 side impact, FMVSS 213 side, and dummy seating for near-side and far-side configurations.
protocolsECE
11
Rear impact and whiplash considerations for child occupants
dummy biofidelity limitations and CRS design implications.
whiplashconsiderations
12
CRS installation and misuse effects
ISOFIX/LATCH, belt routing, top tether, and dummy response sensitivity to misuse.
CRSinstallation
13
Dummy positioning and pre-test setup
H-point, seating posture, limb placement, and instrumentation cable routing.
positioningpre-test
14
Data processing and filtering
SAE J211, CFC filters, and computation of injury metrics from raw dummy signals.
processingfiltering
15
Injury risk curves and probability of injury
statistical methods, age adjustment, and application to dummy data.
probabilitystatistical
16
Finite element modeling of child dummies
model validation, mesh development, and coupling with CRS FE models.
modelingvalidation
17
CRS FE modeling and dummy interaction
contact definitions, material models, and simulation of belt and airbag loading.
CRSmodeling
18
Validation of numerical models against sled tests
correlation metrics, dummy response comparison, and model updating.
Validationnumerical
19
Parametric studies using child dummy models
design of experiments for CRS parameters and injury outcome sensitivity.
Parametricexperiments
20
Airbag interaction with child dummies
out-of-position (OOP) testing, deployment timing, and injury mitigation strategies.
interactionout-of-position
21
Belt loading and pressure distribution on child dummies
belt geometry, pretensioners, load limiters, and chest deflection.
pressuredistribution
22
Abdominal and pelvic injury assessment
dummy abdomen design, pressure sensors, and CRS design to reduce submarining.
Abdominalassessment
23
Head and neck injury in CRS
dummy head accelerometers, neck loads, and CRS features (headrests, side wings).
CRSaccelerometers
24
Q-series dummy specifics
Q0, Q1, Q1.5, Q3, Q6, Q10 design features, instrumentation, and injury criteria.
Q-seriesspecifics
25
Hybrid III child dummies
3-year-old and 6-year-old design, limitations, and comparison with Q-series.
IIIyear-old
26
CRABI dummy
design, instrumentation, and applications in airbag OOP testing.
CRABIinstrumentation
27
Test dummy selection for CRS development
matching dummy size, injury criteria, and regulatory requirements to design targets.
selectionCRS
28
Case study
frontal CRS sled test with Q3 dummy—setup, execution, data analysis, and injury metric interpretation.
CRSexecution
29
Case study
side impact CRS evaluation with Q6 dummy—dummy positioning, door intrusion simulation, and head excursion.
CRSevaluation
30
Future trends
advanced child dummies (THOR-5F child, Q-dummies with improved biofidelity), virtual testing, and harmonization efforts.
advancedTHOR-5F