Vibration Exposure for Selected Power Hand Tools Used in Automobile Assembly

Non-power and power cutting hand tools are mainly used every day in vineyards for grapevines pruning during 5 months (November - March). The grapevines pruning with the help of non-power tools is very stressful for wine growers. Repetitive movements combined with external forces in finger-hand-wrist-system, extreme positions in arm-shoulder-system, climate condition are some of the stress factors. Grapevines pruning with 5 manual prunes produced by 3 different manufacture and 2 power hand tools (electrically and pneumatically) were analysed. The results reveal that grapevines pruning with pneumatic and electric prunes is up to 30% more effective (according to productivity) than cutting with non-powered hand tools. At the same time is grapevines cutting with power tools more stressful as with non-powered one.

Download Full-text

Vibration of Power Hand Tool and Discomfort Experience among Malaysian Industrial Workers

Advanced Engineering Forum ◽

10.4028/www.scientific.net/aef.10.313 ◽

2013 ◽

Vol 10 ◽

pp. 313-317 ◽

Cited By ~ 1

Author(s):

Rahayu K. Seri ◽

A. Nurulhuda ◽

A. Rohana

Keyword(s):

Industrial Workers ◽

Hand Tools ◽

Industrial Worker ◽

Limit Value ◽

Exposure Limit ◽

Time Period ◽

Hand Tool ◽

Before And After ◽

Long Time ◽

Power Hand Tools

In reality, people who worked with power vibrating tools exposed with the vibrated syndrome that effect their normal life especially who involved for long time period. Hand-arm vibration (HAV) is a widespread hazard in many industries and occupations involving the use of handheld power tools or hand-fed machines. This paper describes a research and observation on the vibrating hand tool. The objective of this study is to measure and compare the grip strength and hand arm vibration before and after using the Ready-Reckoned standard for industrial workers. Continually, an analysis is conducted due to the pain and discomfort experience that face by the workers. This research also do the analysis about the effects of the vibration to the workers hand depend on the duration of handling the power hand tool. Hundred respondent was involved which 50 men and 50 women who had been identified as an industrial worker and working with power hand tools or machinery. The respondents were interviewed and answer Q-Survey that directly conducted at their workplace after doing the test. As the result, worker who works 8 hours per day, the exposure limit value (ELV) is 5m/s, it can cause fatal effects. Most of workers suffered with fingers that gone white on cold exposure and weakness in hand grip.

Download Full-text

EVALUATION OF DIFFERENT TYPE OF GLOVE USING VIBRATING HAND TOOL

Jurnal Teknologi ◽

10.11113/jt.v76.5667 ◽

2015 ◽

Vol 76 (6) ◽

Author(s):

Nurul Hanna Mas’aud ◽

Bulan Abdullah

Keyword(s):

Manufacturing Industry ◽

Manufacturing Industries ◽

Satisfaction Survey ◽

Vibration Exposure ◽

Satisfaction Level ◽

Health Issues ◽

Hand Tools ◽

Hand Tool ◽

Different Types ◽

The Common

The paper presents satisfaction survey of the glove conditions while using vibrating hand tool in a manufacturing industry. The effects of vibration can cause health issues to the workers especially to those who are using vibrating hand tools. Hand held vibrating tools have become the common use in the manufacturing area. A study stated that many researchers have found that vibration exposures have become a common health problem in manufacturing industries. The research scope and objectives are to evaluate the satisfaction level of the workers using different types of gloves as well as to see how effective they are at reducing vibration exposure. The input data were collected by satisfaction survey among 30 respondents. There are three types of gloves conditions; (i) without glove, (ii) knitted glove and (iii) fingerless anti-vibration glove. The comparison of worker’s satisfaction level between these three conditions was summarized. It clearly showed that the use of fingerless anti-vibration glove is the most comfortable among the workers. The main advantage is that the fingers and thumb remain uncovered resulting in unconstructed movements.

Download Full-text

Subjective Worker Assessments of Hand Tools Used in Automobile Assembly

AIHAJ ◽

10.1080/15298668991375290 ◽

1989 ◽

Vol 50 (12) ◽

pp. 639-645 ◽

Cited By ~ 37

Author(s):

THOMAS J. ARMSTRONG ◽

LAURA PUNNETT ◽

PHILLIP KETNER

Keyword(s):

Hand Tools ◽

Automobile Assembly

Download Full-text

Effect of short-time vibration exposure on work movements with carpenters' hand tools

International Journal of Industrial Ergonomics ◽

10.1016/0169-8141(91)90013-c ◽

1991 ◽

Vol 8 (2) ◽

pp. 125-134 ◽

Cited By ~ 2

Author(s):

Eva Hammarskjöld ◽

Karin Harms-Ringdahl ◽

Jan Ekholm ◽

Björn Samuelson

Keyword(s):

Vibration Exposure ◽

Hand Tools ◽

Short Time

Download Full-text

Dynamics of Power Hand Tools on Operator Hand and Arm Stability

Proceedings of the Human Factors and Ergonomics Society Annual Meeting ◽

10.1177/154193129403801013 ◽

1994 ◽

Vol 38 (10) ◽

pp. 602-606 ◽

Cited By ~ 2

Author(s):

Seoungyeon Oh ◽

Robert G. Radwin

Keyword(s):

Perceived Exertion ◽

Horizontal Distance ◽

Subjective Ratings ◽

Ratings Of Perceived Exertion ◽

Hand Tools ◽

Hand Tool ◽

Power Hand Tools ◽

Tool Dynamics

Threaded fastener tightening was studied to determine effects of tool dynamics (torque and build-up time) and workstation configuration (orientation, horizontal distance and height) on operator kinematics and ability to stabilize a right-angle power hand tool. Hand velocity, hand displacement, tool torque, and spindle angle were recorded during tool operation. Four subjects participated. Workstation factors and tool dynamics had significant effects on hand stability. The magnitude of hand velocity and displacement was significantly greater for (1) vertical work surfaces compared to horizontal work surfaces; (2) vertical work surfaces higher than 90 cm above the ground; (3) horizontal work surfaces 90 cm above the ground; (4) increasing torque levels, and (5) long torque build-up times. Subjective ratings of perceived exertion were greater for increasing torque levels, long build-up times, and increasing workstation heights. Perceived exertion was significantly related to hand velocity and displacement ( p<0.05), however, the strength of the correlation was small (R2 ranged between 0.01 and 0.10).

Download Full-text