ANALYSIS AND MITIGATION OF HAND ARM POWER TOOLS VIBRATION | ||
| Journal of Engineering and Sustainable Development | ||
| Article 1, Volume 20, Issue 5, October 2016, Pages 172-188 | ||
| Authors | ||
| Jumaa S. Chiad; Bashar A. Bedaiwi; Mohannad Yousif Idrees | ||
| Abstract | ||
| The hard workers are usually suffering from big medical problems after working with vibrating equipment such as compressor and different type of drills. These and many relative problems give a big motivation to study, measuring and analysis the vibration. The data were resulting from the vibration of the power tools to the human hand of the user that is in touch with this vibrating equipment are considered one of the most interesting Biomechanical Engineering. This work studies the vibration frequency, displacement, velocity acceleration that will be measured at different hand points. Examination was conducted to two workers (subjects) which are different in age, weight and height. This investigation requires a design and manufacture of vibration measurement system according to international standard( ISO 28927-10).ANSYS 15 program was chosen in order to evaluate the numerical results and then to compare with experimental results. Different types were used of Anti-vibration gloves in order to reduce the vibration connecting to hand-arm worker. The results show that values of acceleration and frequency are increased with the decreasing the distance of sensor point from the drill handle. When using the subject (1) as grand foundation , the reduction in frequency and acceleration when wearing gloves, The reduction percentage in the metacarpal for the sponge handle is (34.4 %) while in the working gloves is (30.6 %) , silicon gloves is (28.6 %), cloth gloves is (26.6 %), and leather gloves is (25.9 %). It was found that the reduction percentage in the carpal for the sponge handle is (44.8 %) while in silicon gloves is (40.8 %), the working gloves is (25.4 %), leather gloves is (19.5 %), and cloth gloves is (18 %). It was found that the reduction percentage in the elbow for the sponge handle is (42.6 %) while in silicon gloves are (28.3 %), and the working gloves is (15.4 %). The reduction percentage in the shoulder for the silicon gloves was (38.1 %) while in the leather gloves is (21.7 %), and the sponge handle is (1.5 %). | ||
| Keywords | ||
| hand vibration; acceleration; frequency; Accelerometer | ||
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