Project: Dummy Development: Brain Injury Modelling

Reference: S084D/VF

Last update: 23/06/2004 15:42:16

Objectives

The project objectives are to assess:

* the potential for the combined use of the impact response of a dummy headform and computer simulation to predict brain accelerations;
* the ability to use the acceleration data resulting from impacting the dummy headform as an input in a brain injury model for predicting brain injury levels; and
* the ability of brain models to calculate brain injury levels from acceleration data recorded in dummy head and headform impacts and propose brain injury criteria.

Description

The project will provide a new means of assessing head injuries taking advantage of the latest developments in computer modelling techniques and our understanding of brain injuries.

The current measure used for the assessment of brain and skull injury is the Head Injury Criterion (HIC). Although this is the best and most widely accepted injury criterion for the head, it is not able to predict injury risk independently of the impact conditions. A value of 1000 HIC represents a finite risk (about 20%) of serious brain injury and/or skull fracture when impacting a rigid surface. Yet a value of well over 2000 HIC for a soft impact (e.g. an airbag) represents a low injury risk. A further limitation is that HIC only relates to linear acceleration induced injuries, whereas many vehicle accident injuries are considered to be induced by rotational acceleration, or a combination of both.

If we are to continue reducing road casualties, and encouraging the introduction of new technologies such as airbags, it is vital that we have an accurate means of assessing the likelihood of head injuries.

Contractor(s)

TRL Limited
Crowthorne House, Nine Mile Ride, Wokingham, Berkshire, RG40 3GA
+44 (0)1344 773131

Contract details

Cost to the Department: £394,711.00

Actual start date: 18 November 1997

Actual completion date: 24 May 2004

Publication(s)

Literature Review: Dummy Development - Brain Injury Modelling
Author: TRL Ltd
Publication date: 01/11/1998
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

Report on a Scientific Mission to the Institute de Mecanique des Fluids (IMF), Strasbourg, France
Author: TRL Ltd
Publication date: 01/11/1999
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

PR/SE/859/04. The Effect on the Predictions of a Finite Element Head Model of Representing the Skull as a Rigid Body
Author: TRL Ltd
Publication date: 31/01/2004
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

PR/SE/225/04. Dummy Development: Brain Injury Modelling
Author: TRL Ltd
Publication date: 01/03/2004
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

PR/SE/702/03. A Review of the SIMon Injury Risk Assessment Tool
Author: TRL Ltd
Publication date: 01/07/2003
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

PR/SE/584/02. Investigations Into the Use of Numerical Head Models for Assessing Head and Brain Injuries
Author: TRL Ltd
Publication date: 31/01/2003
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

PR/SE/719/03. Literature Review. A Contemporary Overview of the Biomechanics and Modelling of Head Injuries
Author: TRL Ltd
Publication date: 01/07/2003
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

Paper. Comparative Study Between Finite Element Human Head and Dummy Head Model Responses Under Impact. Presented at IRCOBI 2004
Author: TRL Ltd and Universite Louis Pasteur Strasbourg
Publication date: 01/03/2004
Unpublished
Source: Contact: adrian.eaton@dft.gsi.gov.uk

Summary of results

  1. This project was originally intended to support an EC Framework project that never came about and, because of this, the original objectives became unrealistic and, as a result, the quality of the project suffered.