Parcourir par tags

Tous les tags » Vibrations - Généralités (RSS)
ISO 8041-1 - Réponse des individus aux vibrations - Appareillage de mesure
Le présent document donne les spécifications de performances et les limites de tolérance pour les instruments destinés à mesurer les valeurs de vibration afin d'évaluer la réponse des individus aux vibrations. Il inclut les exigences relatives aux essais de conformité, ou à la validation, à la vérification périodique et aux contrôles in situ, ainsi que la spécification concernant les calibrateurs de vibration destinés aux contrôles in situ. Les instruments de mesure des vibrations spécifiés...
Special Issue on Workplace Noise and Vibration
Noise and vibration in the workplace have been known health hazards for many, many years and most countries have had regulations or guidance material for decades. However, sadly, we have not yet succeeded in defeating these problems. The WHO estimates that over 360 million people in the world live with disabling hearing loss with about 16% being due to noise. In Australia the latest NIHL claims data from Safe Work Australia (SWA) show a significant downward trend from 2012. Unfortunately, on closer investigation, nearly all the reduction was due to NSW where there had been a change in the eligibility...
Méthodes de simulation temporelles pour résoudre des problématiques de bruit et vibrations
Revue de la littérature Le présent projet a consisté à faire une étude bibliographique des outils de modélisation temporelle et à documenter leurs applications en santé et en sécurité du travail, plus spécifiquement dans la réduction des bruits et des vibrations impulsionnelles transitoires ou non linéaires. La revue de la littérature a couvert près de deux cents documents. Source : http://www.irsst.qc.ca/-publication-irsst-simulation-temporelles-bruit-vibrations-r-806.html
Nodal control of grass trimmer handle vibration
Imposing node technique is applied to the grass trimmer shaft in order to achieve very low vibration (node) at the handle location. The optimum tuning frequencies of the two tuned vibration absorbers (TVAs) attached at 0.74L and 0.85L along the shaft of the grass trimmer are determined using the imposing node technique. Transverse deflection, experimental modal analysis and operating deflection shape analysis of the grass trimmer were carried out, and the results indicated that nearly zero deflection (node) was induced at the position very close the loop handle location. Moreover, the vibration...
The effectiveness of BS EN ISO 28927-9:2009 concerning the vibration emission of scaling hammers and needle scalers
The work in this report provides HSE with information regarding: the likelihood that use of a tool's vibration emission value will result in minimised vibration exposures for the end user; and the limitations of the declared vibration emission value measured according to the standard test code, for use in a vibration exposure assessment. Source : http://www.hse.gov.uk/research/rrpdf/rr967.pdf
An investigation into the effects of potential changes in concrete properties when aged and weathered on hand arm vibration emission magnitudes
During vibration emission measurements of hammers according to EN60745-2-6 (work published as RR868), variations in results were found which appeared to be related to the condition or age of the concrete test blocks following a 12-month period of outside storage. In one case, the emission value was reduced by 36%. For two of the three tools identified in RR868, the variation in vibration emission resulted in a change from the manufacturers' data not being verified to being verified in accordance with EN12096. This work aimed to replicate the situation that gave rise to the results detailed...
Syllabus of the NEBOSH National Diploma «Physical agents»
This article explain that vibration injury is typical of the «slow accidents» that build through continued exposure to the so-called physical agents, which also include noise and radiation... damages many lives. It presents the syllabus of the NEBOSH National Diploma «Physical agents» and resumes information on Whole-body vibration and Hand-arm vibration. In his series for NEBOSH National Diploma students, Lawrence Bamber details the risks posed by vibration, its effects on the individual and assessment and control of exposure. Source : Bad Vibes . Bamber, L. Health and...
Communiquer sans entendre le bruit ambiant
Des casques supercommunicants et antibruit permettront une meilleure communication entre opérateurs en milieu industriel. Les fabricants d'EPI se penchent sur les solutions Bluetooth adaptées à l'environnement industriel. «Les prochaines générations de ces appareils devraient permettre de communiquer avec un plus grand nombre de personnes et sur des portées plus grandes.» Des détecteurs sans fil mesureront l'exposition du travailleur et des logiciels performants donneront «avec précision combien d'heures ou...
National Hazard Exposure Worker Surveillance Vibration exposure and the provision of vibration control measures in Australian
This report focuses on the exposure of Australian workers to vibration and the control measures that are provided in workplaces that eliminate, reduce or control worker exposure to vibration. The aims of this report are threefold. The first aim is to describe patterns of exposure to vibration in conjunction with patterns of vibration control provisions with respect to industry, occupation and other relevant demographic and employment variables. The second aim is to make recommendations, where possible, for the development of work health and safety and workers compensation policy. The final aim...
Proceedings of the Second American Conference on Human Vibration
There is a saying, "If it moves, it vibrates." This is especially true in our modern industrial environments, where workers use powered tools, machinery, vehicles, and heavy equipment. How workers are affected by these elements of the industrial working environment is a concern of health professionals, governments, and scientists around the world. How to adequately assess the effects of human vibration exposure is an equally important issue. Source : http://www.cdc.gov/niosh/mining/pubs/pubreference/outputid2883.htm
Vibration website - rebranded
New design, new features - advice and guidance on the risks associated with hand arm and whole body vibration. http://www.hse.gov.uk/vibration/index.htm

Abonnement courriel

Messages récents

Catégories

Mots-Clés (Tags)

Blogoliste

Archives