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1.2 Problem Statement
Poor design and excessive use of sheet metal cutting may be associated with increased incidence chronic disorders of the hand, wrist and forearm. Dissatisfaction using the
sheet metal cutting for the long time because discomfort factor. Short term fatigue and discomfort has been considered risk factors for musculoskeletal
syndromes and have therefore been used been used as criteria in ergonomic guidelines and standard. Type of tools, the majority of injury is inflicted by non power hand tools
due to the widespread use of non powered hand tools. Sheet metal cutter is a non powered hand tools. Therefore this project will focus on the evaluation and improving
the design of sheet metal cutting.
1.3 Objectives of Study
The main objectives this project is to conduct an ergonomics evaluation of sheet metal cutters. This project can improve the sheet metal cutters more comfort and less comfort
for users during their job. To achieve the main objectives, these sub objectives are described:
To perform a hand tool ergonomics assessment for sheet metal cutters. To conduct a usability assessment of sheet metal cutters.
To assess the subjective grip force requirements while operating sheet metal
cutters.
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1.4 Scope of Project
This project focuses to sheet metal cutting hand tools about comfort and discomfort factors, related from ergonomic sheet metal cutting design. Focus to the musculoskeletal
disorder and injury factors from the type of sheet metal cutting design. Comparison and evaluate good design of sheet metal cutting from different types of tools user. Scopes in
sheet metal cutters laboratory testing is curved and straight cutting only with material plate thickness 0.8 mm. Subjective of grip force testing focus for right handed users
only.
1.5 PotentialBenefit of Project.
Benefit in this project is identifying musculoskeletal effect for the long term and musculoskeletal disorders using the sheet metal cutting tools. Reduce injury from the
sheet metal cutting design and improve the ergonomic factor for the tools. Other benefit in this project is improving the comfort user from sheet metal cutting design and
prevention worker dissatisfaction during user sheet metal cutters. Overall project benefit is sheet metal cutting improving from user aspect, design aspect and ergonomic aspect
prevention long term and short term musculoskeletal problem to the workers.
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CHAPTER 2
LITERATURE REVIEW
2.1 Introduction