title: Tool-specific performance of vibration-reducing gloves for attenuating palm-transmitted vibrations in three orthogonal directions.
abstract: Vibration-reducing (VR) gloves have been increasingly used to help reduce vibration exposure, but it remains unclear how effective these gloves are. The purpose of this study was to estimate tool-specific performances of VR gloves for reducing the vibrations transmitted to the palm of the hand in three orthogonal directions (3-D) in an attempt to assess glove effectiveness and aid in the appropriate selection of these gloves. Four typical VR gloves were considered in this study, two of which can be classified as anti-vibration (AV) gloves according to the current AV glove test standard. The average transmissibility spectrum of each glove in each direction was synthesized based on spectra measured in this study and other spectra collected from reported studies. More than seventy vibration spectra of various tools or machines were considered in the estimations, which were also measured in this study or collected from reported studies. The glove performance assessments were based on the percent reduction of frequency-weighted acceleration as is required in the current standard for assessing the risk of vibration exposures. The estimated tool-specific vibration reductions of the gloves indicate that the VR gloves could slightly reduce (<5%) or marginally amplify (<10%) the vibrations generated from low-frequency (<25 Hz) tools or those vibrating primarily along the axis of the tool handle. With other tools, the VR gloves could reduce palm-transmitted vibrations in the range of 5%-58%, primarily depending on the specific tool and its vibration spectra in the three directions. The two AV gloves were not more effective than the other gloves with some of the tools considered in this study. The implications of the results are discussed.
  Hand-transmitted vibration exposure may cause hand-arm vibration syndrome. Vibration-reducing gloves are considered as an alternative approach to reduce the vibration exposure. This study provides useful information on the effectiveness of the gloves when used with many tools for reducing the vibration transmitted to the palm in three directions. The results can aid in the appropriate selection and use of these gloves.
authors.affiliation: Engineering & Control Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA.
authors.forename: Ren G
authors.initials: RG
authors.lastname: Dong
authors.affiliation: Engineering & Control Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA.
authors.forename: Daniel E
authors.initials: DE
authors.lastname: Welcome
authors.affiliation: Biodynamics Laboratory, University of Connecticut Health Center, Farmington, CT 06030-2017, USA.
authors.forename: Donald R
authors.initials: DR
authors.lastname: Peterson
authors.affiliation: Engineering & Control Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA.
authors.forename: Xueyan S
authors.initials: XS
authors.lastname: Xu
authors.affiliation: Engineering & Control Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA.
authors.forename: Thomas W
authors.initials: TW
authors.lastname: McDowell
authors.affiliation: Engineering & Control Technology Branch, National Institute for Occupational Safety and Health, Morgantown, WV 26505, USA.
authors.forename: Christopher
authors.initials: C
authors.lastname: Warren
authors.affiliation: Biodynamics Laboratory, University of Connecticut Health Center, Farmington, CT 06030-2017, USA.
authors.forename: Takafumi
authors.initials: T
authors.lastname: Asaki
authors.affiliation: Biodynamics Laboratory, University of Connecticut Health Center, Farmington, CT 06030-2017, USA.
authors.forename: Simon
authors.initials: S
authors.lastname: Kudernatsch
authors.affiliation: Biodynamics Laboratory, University of Connecticut Health Center, Farmington, CT 06030-2017, USA.
authors.forename: Antony
authors.initials: A
authors.lastname: Brammer
keywords: Anti-vibration glove; Hand-arm vibration; Hand-arm vibration syndrome; Hand-transmitted vibration; Vibration-reducing glove