טכניון מכון טכנולוגי לישראל
הטכניון מכון טכנולוגי לישראל - בית הספר ללימודי מוסמכים  
M.Sc Thesis
M.Sc StudentRosen Tali
SubjectCombining Redesign and Instruction to Reduce Hand-tool CTD
Exposure and Increase Productivity
DepartmentDepartment of Architecture and Town Planning
Supervisors Dr. Yair Lifshitz
Professor Ron Nabarro
Full Thesis textFull thesis text - English Version


Abstract

Working with hand tools can greatly affect user’s exposure to Cumulative Trauma Disorders (CTD). In a certain plant, tweezers are the principle tool being used. This study examined the effects that working with different types of tweezers and different sets of instructions had on speed and comfort. Straight-bodied tweezers, the standard used in the plant, were examined along side with bent-bodied tweezers in the performance of two types of operations. The participants were divided into three groups, one simply given the tweezers and asked to perform the tasks. The second, given instruction on how to hold the tweezers and the third was given both instruction and an ergonomic explanation.

It was found that the straight and bent tweezers each best suited a different type of operation in both ergonomic and productive aspects. The importance of receiving instructions on how to use the tools has been shown since the group that did not receive instructions achieved poorer performance. The results stress the need to adapt the right tool to the right task along with proper instructions on how to use the tool. Such implementation could achieve both less exposure to CTD and better performance, which are essential in high precision jobs.