Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Frictional Forces on Flat Belts

Frictional Forces on Flat Belts

Flat belts are commonly used in various industrial applications for transmitting power from one pulley to another. When a flat belt is wrapped around a set of pulleys, it experiences different tensions at the driving pulley ends due to the friction between the belt and pulley surface. When the pulley moves in a counterclockwise direction, the tension T2 on the opposite side of the pulley where the belt is moving away from is higher than the tension T1 on the side where the belt is moving...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Predicting Dental Caries in Young Children in Primary Health Care Settings.

Journal of dental research·2023

Same author

Health service COVID-19 wellbeing and support initiatives: a mixed-methods evaluation.

Occupational medicine (Oxford, England)·2022

Same author

A Survey of Latent Tuberculosis Screening and Treatment Practices in a Tertiary Centre.

Irish medical journal·2021

Same author

Alterations in the Magnetoencephalography Default Mode Effective Connectivity following Concussion.

AJNR. American journal of neuroradiology·2021

Same author

A New Tool for the Assessment and Improvement of Clinical Record Keeping.

Irish medical journal·2020

Same author

Prevalence and Incidence of Microhemorrhages in Adolescent Football Players.

AJNR. American journal of neuroradiology·2020

Search research articles

Related Experiment Video

Updated: Jun 4, 2026

A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation

A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation

Published on: September 14, 2017

Rib fracture timing in dynamic belt tests with human cadavers.

S M Duma¹, A R Kemper, J D Stitzel

¹Center for Injury Biomechanics, Virginia Tech-Wake Forest University, Center for Injury Biomechanics, Stanger Street, Blacksburg, VA 24061, USA. Duma@vt.edu

Clinical Anatomy (New York, N.Y.)

|February 16, 2011

Summary

This summary is machine-generated.

Dynamic belt loading tests reveal all rib fractures occur within 35% thorax compression. Left-side fractures typically precede right-side fractures in simulated car crashes, providing precise injury timing data.

More Related Videos

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

Published on: August 17, 2017

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

Published on: March 11, 2017

Related Experiment Videos

Last Updated: Jun 4, 2026

A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation

A Method to Estimate Cadaveric Femur Cortical Strains During Fracture Testing Using Digital Image Correlation

Published on: September 14, 2017

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

Method and Instrumented Fixture for Femoral Fracture Testing in a Sideways Fall-on-the-Hip Position

Published on: August 17, 2017

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

Proximal Cadaveric Femur Preparation for Fracture Strength Testing and Quantitative CT-based Finite Element Analysis

Published on: March 11, 2017

Area of Science:

Biomechanics
Injury Biomechanics
Forensic Engineering

Background:

Understanding thorax injury mechanisms is crucial for automotive safety.
Previous studies often lack precise injury timing relative to loading events.

Purpose of the Study:

To present data on rib fracture timing during dynamic belt loading of human cadavers.
To correlate rib fracture events with specific mechanical parameters like chest compression and load.

Main Methods:

Utilized 47 strain gages in two human cadavers (male and female) to record strain histories.
Developed a custom belt loading device to simulate severe car crash thoracic loading (40% compression, 150 ms cycle).
Analyzed strain gage data to determine the exact timing of each rib fracture and compared it to real-time mechanical data.

Main Results:

All observed rib fractures occurred within the initial 35% of thorax compression.
Left-side rib fractures generally occurred before right-side fractures.
Established correlations between chest compression levels and Abbreviated Injury Scale (AIS) scores, with AIS 4 occurring at 33.3% compression.

Conclusions:

Dynamic belt loading provides a method to precisely time rib fractures relative to mechanical forces.
Fracture timing data can refine injury assessment scales like AIS in crash simulations.
This research offers valuable insights into the biomechanics of thoracic trauma during vehicle impacts.