کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1096622 1487468 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of tool handle diameter on temporary threshold shift (TTS) of vibrotactile perception
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی صنعتی و تولید
پیش نمایش صفحه اول مقاله
Effect of tool handle diameter on temporary threshold shift (TTS) of vibrotactile perception
چکیده انگلیسی

ObjectiveTemporary threshold shifts (TTSs) of fingertip vibrotactile perception were measured in a laboratory study to examine the effects of handle size in combination with vibration frequency, amplitude, and frequency weighting, on human responses to hand–arm vibration (HAV).MethodsTen healthy male subjects were exposed to two levels of HAV: 125 Hz–5.0 m/s2 and 125 Hz–20.0 m/s2 (represented as a combination of vibration frequency and rms acceleration) using two different handles (22 and 35 mm in diameter) excited with a shaker. A simplified version of method of limits were used to measure vibrotactile perception thresholds and TTSs were then calculated as the difference between fingertip vibrotactile perception thresholds measured before and after 5 min vibration exposure.ResultsAt 125 Hz–5.0 m/s2 vibration, the handle size significantly affected TTSs in fingertip vibrotactile perception. In contrast, the handle size did not significantly affect the TTSs at 125 Hz–2.0 m/s2 vibration.ConclusionsOur results suggest that handle size is more sensitive to the TTS in fingertip vibrotactile perception under relatively lower vibration level. From a viewpoint of risk assessment to HAV exposure, TTS after short-term exposure to HAV is indicative of HAV syndrome resulted from long-term exposure to HAV. Since the long-term effect has been the accumulation of repeated short-term effect of HAV, our results suggest that the tool handle size is recommended to be designed based on the vibration level so as to diminish TTS.Relevance to industryResults obtained from this study show that the range of handle diameter examined in this study does not have a significant influence on TTS in vibrotactile perception. This finding gives fundamental data to the designing of hand-held power tools.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Industrial Ergonomics - Volume 38, Issues 9–10, September–October 2008, Pages 697–702
نویسندگان
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