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- Johansson Hanse, Jan, 1954, et al.
(författare)
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Upplevd muskeltrötthet i nacke och skuldra
- 2007
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- Rapporten baseras på två studier. Studie 1 syftade till att utveckla ett formulär för upplevd muskeltrötthet i nacke och skuldra. Studie 2 syftade till att studera upplevd muskeltrötthet i nacke och skuldra vid olika grad av styrt arbetstempo vid två industriföretag (N=29). Tillvägagångssättet vid framtagningen av formuläret var att till en början försöka fånga relativt många olika uttryck för trötthet, för att successivt reducera antalet uttryck till ett hanterbart antal. Intervjuer genomfördes med anställda inom industrin (N=6). I studie 2 testades ett formulär med 20 uttryck angående upplevd muskeltrötthet i nacke och skuldra. Resultatet visade att upplevd muskeltrötthet ökade signifikant under arbetspassen för 11 av 20 uttryck. Ett preliminärt formulär har utformats, vilket benämns MFQ (”Muscular Fatigue Questionnaire”).
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- Neumann, W. Patrick, et al.
(författare)
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Innovation and employee injury risk in automotive disassembly operations
- 2018
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Ingår i: International Journal of Production Research. - : Taylor & Francis. - 0020-7543 .- 1366-588X. ; 56:9, s. 3188-3203
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Tidskriftsartikel (refereegranskat)abstract
- Engineering innovations in car disassembly systems are studied for affects on system operators’ risk of repetitive strain injury (RSI). Objective instrumented measures of injury risk factors with synchronized video-based task analyses were used to examine changes in operators’ RSI risk during two cases of engineering innovation: 1) a shift in industrial model from traditional extracting saleable parts to line-based full material recovery, and 2) the prospective effects of a simulated “Lean” inspired process improvement in the line system.Both cases of innovation showed significantly increased movement speeds and reduced muscular recovery opportunities, implying increased RSI risk. This case study reveals a mechanism by which innovation may increase RSI risks for operators. Managers responsible for engineering innovation should ensure their teams have the tools and mandate necessary to control injury hazards as part of the development and design process. These cases suggest how failure to manage RSI hazards in the innovation process may allow increases of injury risks that can compromise operational performance. This “innovation pitfall” has implications for operator health and organizational sustainability. Alternative pathways are discussed.
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- Palmerud, Gunnar, 1948, et al.
(författare)
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Mechanical exposure implications of rationalization : A comparison of two flow strategies in a Swedish manufacturing plant
- 2012
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Ingår i: Applied Ergonomics. - : Elsevier BV. - 0003-6870 .- 1872-9126. ; 43:6, s. 1110-1121
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Tidskriftsartikel (refereegranskat)abstract
- The aim of this case study was to (1) investigate differences in mechanical exposure (i.e. mechanical forces arising in the body of the operator) between two production strategies: long-cycle parallelised flow assembly (OLD) and conventional serial flow assembly (NEW), and (2) estimate potential changes in job exposure as a consequence of waste reduction when rationalising a line system.Data on postures, movements and whole body exposure were collected during an ordinary working shift, by means of video recordings synchronised to direct technical measurements of six professional operators.The results revealed the machine paced NEW system to have slower movements with less time spent in movements of high velocity compared to the self-paced OLD system. No significant differences were found between time-median posture levels. ‘Disturbances’ in the NEW system offered lower mechanical risk exposures compared to direct assembly work. Modelling the removal of wasteful ‘disturbances’ revealed both an increase in risk-implying fast movements and decrease in recovery-implying periods at low velocity – effectively isolating a work intensification. This study helps expose the complex relationship between rationalizations and mechanical exposure for system operators
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