Faculty Collaboration Database

Thoracic deformation and velocity analysis in frontal impact. J Biomech Eng 1995 Feb;117(1):48-52

Date

02/01/1995

Pubmed ID

7609484

DOI

10.1115/1.2792269

Scopus ID

2-s2.0-0029239681 (requires institutional sign-in at Scopus site)   19 Citations

Abstract

The objective of the present study was to measure dynamic chest deformations and compute chest velocity and viscous criterion during real world frontal impacts conducted on a horizontal sled. Four unembalmed human cadavers were restrained using a three-point belt restraint in the driver seat of a sled buck. Two chest bands (each with a 24 gauge capability) were placed on the thorax to record the temporal deformation patterns during impact. All tests were conducted at a velocity of approximately 50 kph. Biomechanical data were gathered digitally at a sampling rate of 12,500 Hz. Multiple rib fractures were identified in all specimens at autopsy. Analysis of approximately 800 temporal deformation contours of the thorax demonstrated regional differences. The overall mean maximum normalized chest deflections, maximum chest compression velocities, and peak viscous response variables ranged from 0.15 to 0.51, 1.79 to 4.87 m/s, and 0.15 to 1.95 m/s, respectively. These findings clearly illustrate the potential use of the chest band output to correlate injury with biomechanical variables and establish thoracic impact tolerance.

Author List

Yoganandan N, Morgan RM, Eppinger RH, Pintar FA, Skrade DA, Sances A Jr

Authors

Frank A. Pintar PhD Chair, Professor in the Biomedical Engineering department at Medical College of Wisconsin
Narayan Yoganandan PhD Professor in the Neurosurgery department at Medical College of Wisconsin

MESH terms used to index this publication - Major topics in bold

Accidents, Traffic
Biomechanical Phenomena
Cadaver
Female
Humans
Male
Middle Aged
Monitoring, Physiologic
Seat Belts
Thoracic Injuries
Time Factors
Viscosity