An inspection policy for shredder equipment used in steel production lines considering buffer level and operating time

2021 ◽  
Vol 60 ◽  
pp. 640-651
Author(s):  
Waldomiro A. Ferreira Neto ◽  
Cristiano A.V. Cavalcante ◽  
Augusto C.J. Santos ◽  
Luís H.C. Araújo ◽  
Alexandre R. Alberti ◽  
...  
2014 ◽  
Vol 3 (1) ◽  
pp. 1
Author(s):  
Carlos G. Spínola ◽  
J.M. Cañero-Nieto ◽  
C.J. Galvez-Fernandez ◽  
J.M. Bonelo

2021 ◽  
Vol 11 (19) ◽  
pp. 8965
Author(s):  
Czesław Dembiński ◽  
Zbigniew Potok ◽  
Stanisław Dolny ◽  
Richard Kminiak ◽  
Tomasz Rogoziński

The study specifies the value of the dust resistance coefficient in the process of wood dust filtration in a pilot-scale test stand. The experiments were carried out for one type of filter material—polyester with a PP film previously used in different production lines. Filter bags from the filtering installation of the processing line for narrow surfaces of furniture panels of the honeycomb structure with a chipboard frame, HDF, natural veneer cladding, and a line of CNC drilling machines, were taken into account. Before the pilot-scale tests, the bags had been in use in industrial installations from zero to nine months. All tests were performed under identical filtration conditions. The values of the dust resistance coefficient depend on the operating time and the conditions in which filtration is carried out in an industrial plant, and increased from 6507 s−1 to 10,208 s−1 for the bags from the filter of the narrow surfaces processing line and to 29,729 s−1 for the bags from the filter of the drilling line. The most important factor influencing the properties of the filter bag in the process of wood dust filtration in an industrial filter is the cleaning pulses frequency.


1989 ◽  
Vol 26 (3) ◽  
pp. 543-551 ◽  
Author(s):  
Dror Zuckerman

We consider a machine which generates income at rate I during its operating time. The machine is composed of N independent stochastically failing units. A failure of each one of the units causes a breakdown of the machine.The machine's status (good or failed) is observed continuously, by a controller, at zero cost. In the event of a breakdown, exactly one unit is failed, and a series of inspections is performed, in order to identify the failed unit and the reasons for its failure. At any time along the inspection process only one unit can be tested.An inspection of a given unit is characterized by its cost rate and inspection time. At the end of the inspection process, the failed unit is repaired at a known cost, and a new operating cycle is started.Our objective is to formulate an optimal inspection strategy under two optimality criteria: long-run average net income, and total expected discounted net income.


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