Thermal Perception of Ventilation Changes in Full-Face Motorcycle Helmets: Subject and Manikin Study.
We report the effects of full-face motorcycle helmet ventilation systems on heat, airflow, noise, and comfort perception for ventilation changes on the scalp. Eight subjects (aged 28.0 ± 5.4 years) underwent two experimental trials at ambient temperatures of 23.7 ± 0.4°C or 27.5 ± 0.3°C. In each tri...
| Publicado en: | Annals of Occupational Hygiene Vol. 55; no. 2; pp. 192 - 202 |
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| Autores principales: | , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Oxford University Press / USA
Mar2011
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=58150046&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 58150046 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 00034878 JQ4 jtl: Annals of Occupational Hygiene issn: 00034878 maglogo: N pubinfo: dt: Mar2011 vid: 55 iid: 2 pid: 622 pub: Oxford University Press / USA artinfo: ui: 58150046 104349560 104349560 10.1093/annhyg/meq074 58150046 ppf: 192 ppct: 10 formats: fmt: @attributes: type: P tig: atl: Thermal Perception of Ventilation Changes in Full-Face Motorcycle Helmets: Subject and Manikin Study. aug: au: Bogerd, Cornelis P. Rossi, René M. Brühwiler, Paul A. affil: Empa, Swiss Federal Laboratories for Materials Science and Technology, Laboratory for Protection and Physiology, Lerchenfeldstrasse 5, CH-9011 St Gallen, Switzerland sug: subj: Head Protective Devices Motor Vehicles Temperature Ventilation Human Models, Anatomic Questionnaires Data Analysis Software Paired T-Tests McNemar's Test Nonparametric Statistics Multiple Logistic Regression Funding Source ab: We report the effects of full-face motorcycle helmet ventilation systems on heat, airflow, noise, and comfort perception for ventilation changes on the scalp. Eight subjects (aged 28.0 ± 5.4 years) underwent two experimental trials at ambient temperatures of 23.7 ± 0.4°C or 27.5 ± 0.3°C. In each trial, the thermally equilibrated subjects underwent two examination phases, during which four different helmets were assessed at wind speeds of 39.2 ± 1.9 km h−1 and 59.3 ± 1.4 km h−1. Vent-induced heat loss in the scalp ranged from −6.1 to 6.1 W, corresponding to vents being closed or opened, respectively. Perception of vent-induced changes was assessed immediately after the change. We find that the vent-induced heat loss, the subject, and the helmet are the most important response factors. In addition, comparison of two helmets with similar vent-induced heat loss suggests that internal airflow patterns may be important in explaining the observed perception differences. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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