Model Integrasi Penjadwalan Produksi Batch dan Penjadwalan Perawatan dengan Kendala Due Date
Abstract: This
paper discusses the
integration model of
batch production and
preventive maintenance scheduling
on a single machine producing, an item to
be delivered at a
common due date. The
machine is a
deteriorating machine that
requires preventive maintenance
to ensure the availability of the machine at a desired service level.
Decision variables of the model are the number of preventive maintenances, the
schedule, length of production runs, as well as the number of batches, batch
sizes and the production schedule of the resulting batches for each production run.
The objective function
of the model
is to minimize
the total cost
consisting of inventory costs
during parts processing,
setup cost and
cost of preventive
maintenance. The results show
three important points: First, the sequence of optimal batches always follows
the SPT (short processing
time). Second, variation
of preventive maintenance
unit cost does not
influence the sequence of batches. Third, the first production run length from
production starting time is smaller
than the next
production run length
and this pattern
continues until the
due date. When in process inventory unit cost is increased, the pattern
will continue until a specified cost limit, and beyond the limit the pattern
will change to be the opposite pattern.
Penulis: Zahedi, TMA Ari
Samadhi, Suprayogi, Abdul Hakim Halim
Kode Jurnal: jptindustridd140438
