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Validation of a Whole-Body Vibration Transmission Reduction Device
Authors: Nolan, Alex, Hassan, Marwan, Oliver, Michele Lea
Identifier: CSBE18207
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Published in: CSBE-SCGAB Technical Conferences » AGM Guelph 2018
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Description: Whole-body vibration (WBV) exposure has been linked to low back injuries and other disorders. Agricultural operations involving mobile equipment such as tractors expose operators to WBV with most tractor seats amplifying rather than attenuating WBV. An active vibration control device has been designed to attenuate WBV by altering device damping properties based on input vibration. The purpose of this work is to test the device on human participants. 10-15 participants will complete trials while seated on the newly designed device and directly on a tractor seat which will be placed on a hexapod robot. Participants will be exposed to 25 profiles comprised of 20 second bouts of individual vibration frequencies ranging between 1-5 Hz resulting in an approximately 10-minute total exposure for each of the two seating conditions (20 minutes total). The profiles as well as the experiment seat condition orders will be randomized. Following each 20 second bout, participants will verbally report their discomfort to the experimenter using a 9-point continuous scale. Vertical acceleration data will be collected using two uniaxial accelerometers, one of which will be carpet taped to the robot and one will be embedded in a seat pad. Acceleration values will be weighted for ISO 2631 Comfort and Health and Seat Effective Amplitude Transmissibility values will be determined. Muscle activation levels (%MVC RMS) will be assessed from surface electrodes from the internal and external obliques, and thoracic and lumbar erector spinae muscles. After each 10-minute vibration exposures, participants will complete a seat comfort questionnaire.
Keywords: Whole-Body Vibration, Vibration Attenuation, Tractor Seats
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Date: 2018-07-22
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Conference name: CSBE/SCGAB 2018 Annual Conference, School of Engineering, University of Guelph, Guelph, Ontario, July 22-25 2018.
Session name: Poster Session
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Type: Text.Article
Format:
Publication type: Technical conference
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
DOI:
Description: Whole-body vibration (WBV) exposure has been linked to low back injuries and other disorders. Agricultural operations involving mobile equipment such as tractors expose operators to WBV with most tractor seats amplifying rather than attenuating WBV. An active vibration control device has been designed to attenuate WBV by altering device damping properties based on input vibration. The purpose of this work is to test the device on human participants. 10-15 participants will complete trials while seated on the newly designed device and directly on a tractor seat which will be placed on a hexapod robot. Participants will be exposed to 25 profiles comprised of 20 second bouts of individual vibration frequencies ranging between 1-5 Hz resulting in an approximately 10-minute total exposure for each of the two seating conditions (20 minutes total). The profiles as well as the experiment seat condition orders will be randomized. Following each 20 second bout, participants will verbally report their discomfort to the experimenter using a 9-point continuous scale. Vertical acceleration data will be collected using two uniaxial accelerometers, one of which will be carpet taped to the robot and one will be embedded in a seat pad. Acceleration values will be weighted for ISO 2631 Comfort and Health and Seat Effective Amplitude Transmissibility values will be determined. Muscle activation levels (%MVC RMS) will be assessed from surface electrodes from the internal and external obliques, and thoracic and lumbar erector spinae muscles. After each 10-minute vibration exposures, participants will complete a seat comfort questionnaire.
Keywords: Whole-Body Vibration, Vibration Attenuation, Tractor Seats
Résumé:
Mots-clés:
Citation:
Volume:
Issue:
Pages -
Contributor:
Date: 2018-07-22
Technical field:
Conference name: CSBE/SCGAB 2018 Annual Conference, School of Engineering, University of Guelph, Guelph, Ontario, July 22-25 2018.
Session name: Poster Session
Other information:
Type: Text.Article
Format:
Publication type: Technical conference
Source:
Relation:
Coverage: Canada
Language 1: en
Language 2:
Rights: Canadian Society for Bioengineering
Notes:
Other files:
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