Revista Chapingo Serie Ciencias Forestales y del Ambiente
Universidad Autónoma Chapingo
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Revista Chapingo Serie Ciencias Forestales y del Ambiente
Volume XXV, issue 3, September - December 2019
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Estudio de la producción en un aserradero de corte cualitativo a través del uso de simulación de eventos discretos y diseño de experimentos
Study of the production in a custom-cut sawmill through the use of discrete event simulation and experimental design

Francisco P. Vergara-González; Patricio E. González-Ríos; Gerson Rojas-Espinoza; Claudio A. Montero-Nahuelcura

http://dx.doi.org/10.5154/r.rchscfa.2018.01.007

Received: 2018-01-16

Accepted: 2019-05-02

Available online: 2019-05-03 / pages.291-304

 

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  • descriptionAbstract

    Introduction: When sawing logs without diameter sorting, the cutting program generates decisions and routes depending on the log’s appearance and machine load.
    Objective: To optimize the production flow of a custom-cut Pinus radiata D. Don sawmill, through detection and analysis of critical machines, using discrete event simulation and experimental design.
    Materials and methods: Two simulation models were developed for sawing logs with lengths of 2.5 and 5.0 m, and diameters between 34 and 44 cm to produce sawnwood with a thickness of 5/4" with variable width. The number of logs processed per shift was the response variable of the model. Heavily-used machines and transports with long queues were candidates for critical machines. The impact on production was determined by means of experimental design, where the factors assessed were: (A) delivery from bandsaw carriage 1 to band saw 3, (B) increased debarker capacity, (C) failures eliminated from bandsaw 1 and 2, and (D) direct delivery from bandsaw 2 to edger 2.
    Results and discussion: Modifications to the production flow were proposed because factors B, C and D significantly increased (P = 0.1) the production level (logs per shift); the increases over the sawmill’s initial condition were 13 and 18 % for lengths of 2.5 and 5.0 m, respectively. 
    Conclusion: Simulation and experimental design can be applied in small and medium-sized sawmills to improve production when processing logs without diameter sorting.

    Keyworks: Pinus radiata; production flow; critical machine; simulation model; log length
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  • starCite article

    Vergara-González, F. P.,  González-Ríos, P. E.,  Rojas-Espinoza, G., &  Montero-Nahuelcura, C. A. (2019).  Study of the production in a custom-cut sawmill through the use of discrete event simulation and experimental design. Revista Chapingo Serie Ciencias Forestales y del Ambiente, XXV(3), 291-304. http://dx.doi.org/10.5154/r.rchscfa.2018.01.007