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Sample size analysis for a production line study of time
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Autores
Orientador(es)
Resumo(s)
Setting labor standards is an important topic to operational
and strategic planning which requires the time studies establishment.
This paper applies the statistical method for the definition of a sample
size in order to define a reliable cycle time for a real industrial process.
For the case study it is considered a welding process performed by a single
operator that does the load and unload of components in 4 di↵erent
welding machines. In order to perform the time studies, it is necessary to
collect continuously data in the production line by measuring the time
taken for the operator to perform the task. In order to facilitate the measurements,
the task is divided into small elements with visible start and
end points, called Measurement Points, in which the measurement process
is applied. Afterwards, the statistical method enables to determine
the sample size of observations to calculate the reliable cycle time. For
the welding process presented, it is stated that the sample size defined
through the statistical method is 20. Thus, these time observations of the
task are continuously collected in order to obtain a reliable cycle time
for this welding process. This time study can be implemented in similar
way in other industrial processes.
Descrição
Palavras-chave
Statistical analysis Sample size Time studies
Contexto Educativo
Citação
Silva, Maria Isabel; Vaz, Clara B. (2024). Sample size analysis for a production line study of time. In 32nd International Conference on Flexible Automation and Intelligent Manufacturing (FAIM). p. 178-186. ISBN 978-3-031-38164-5
Editora
Springer Nature