The worker shown below is driving 4 screws into a panel with a powered driver. His production quota is 2,300 panels per 8-h shift. What specific ergonomic problems are found on this job? For each problem: (a) specify an ergonomics improvement that would correct the problem and (b) provide a specific design principle to support this methods change. Problem Neck flexion Shoulder abduction Ulnar deviation Trigger finger Standing posture Ergonomics Improvement tilt panel up lower work surface to elbow rest height use 3-finger trigger to minimize stress on one part Design Principle Principle 2 of workplace design: Adjust the worl surface height based on the task being performed re-orient panel, or pistol- Principle 3&4 of tool design: Perform twisting motions with the elbows bent & Maintain a grip tool straight wrist sit/stand stool to alternate postures Principle 1 of workplace design: Determine wor surface height by elbow height Principle 5 of tool design: Avoid tissue compression Principle 5 of workplace design: Encourage postural flexibility

The worker shown below is driving 4 screws into a panel with a powered driver. His production quota is 2,300 panels per 8-h shift. What specific ergonomic problems are found on this job? For each problem: (a) specify an ergonomics improvement that would correct the problem and (b) provide a specific design principle to support this methods change. Problem Neck flexion Shoulder abduction Ulnar deviation Trigger finger Standing posture Ergonomics Improvement tilt panel up lower work surface to elbow rest height use 3-finger trigger to minimize stress on one part Design Principle Principle 2 of workplace design: Adjust the worl surface height based on the task being performed re-orient panel, or pistol- Principle 3&4 of tool design: Perform twisting motions with the elbows bent & Maintain a grip tool straight wrist sit/stand stool to alternate postures Principle 1 of workplace design: Determine wor surface height by elbow height Principle 5 of tool design: Avoid tissue compression Principle 5 of workplace design: Encourage postural flexibility

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Concept explainers

Forming and Shaping

Metal forming is a category of metalworking process through which the material can be given the desired shape and size by subjecting it to plastic deformation, where the component undergoes bulk deformation process upon application of loads. Unlike the shearing and machining process, the material does not undergo up to a failure point as indicated in the stress-strain curve. Hence, the stresses induced during the forming process are greater than yield strength but less than the failure strength of the material. The process does not lead to the loss of material, so it can be said to be an economical process. During forming, the material is subjected to tensile forces, compressive forces, bending, and shearing loading conditions. The material should possess the property of ductility to undergo the forming process.

Question

IN-CLASS EXAMPLE
The worker shown below is driving 4 screws into a panel with a powered driver. His
production quota is 2,300 panels per 8-h shift. What specific ergonomic problems are
found on this job? For each problem: (a) specify an ergonomics improvement that would
correct the problem and (b) provide a specific design principle to support this methods
change.
Problem
Neck flexion
Shoulder
abduction
Trigger finger
Ergonomics
Improvement
Standing posture
tilt panel up
lower work surface to
elbow rest height
Ulnar deviation re-orient
or pistol- Principle 3&4 of tool design: Perform twisting
grip tool
motions with the elbows bent & Maintain a
straight wrist
use 3-finger trigger to
minimize stress on one
part
Design Principle
Principle 2 of workplace design: Adjust the work
surface height based on the task being
performed
sit/stand stool to alternate
postures
Principle 1 of workplace design: Determine work
surface height by elbow height
Principle 5 of tool design: Avoid tissue
compression
Principle 5 of workplace design: Encourage
postural flexibility

The worker shown below is using a 10-lb pneumatic nut runner to tighten nuts within a tractor cab compartment. What are health and safety problems likely to result from her job? Evaluate the job and the
workstation identifying poor work design features. Please come up with at least five poor design features.
(Please refer to the format of the answers in the class example solution)
No.
1
2
3
4
園
5
Problem
Ergonomics Improvement
Design Principle

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