In this study, we consider a particular version of the hybrid flexible flow shop (HFFS) scheduling problem, inspired from real-life application in printing industry. The considered problem is variation classical Flow which specific constraints are jointly considered, such as non-identical parallel machines, sequence-dependent setups on machine eligibility, and precedence among jobs, order to mi...

In this paper we consider n-jobs, m-machines permutation flow shop scheduling problems. Flow shop scheduling is one of the most important combinational optimization problems. The permutation flow shop scheduling problems are NP-Hard (Non deterministic Polynomial time Hard). Hence many heuristics and metaheuristics were addressed in the literature to solve these problems. In this paper a hybrid ...

This paper focuses on a Flexible Flow Shop (FFS) problem in a paint company in an attempt to minimize production makespan. The FFS problem is characterized by multiple products being produced in machines in stages with sequence dependent set up times and infinite intermediate storages. As the FFS problem is computationally complex, two heuristic methods are employed to solve the Mixed Integer L...

In the present work, an industrial case study has been considered for multi-objective flow shop scheduling problem including the sequence dependent set up time. The multi-objectives include the minimization of sum of total weighted squared tardiness, total weighted squared earliness, makespan and number of tardy jobs. Industries can select the optimal sequence with respect to required objective...

In this paper, we present an approach to deal with fuzzy constraints in a flow shop problem. The flexible constraints on job release date and due date, as well as job processing time are described by fuzzy sets. We propose a method to calculate the satisfaction degree of the schedule with respect to fuzzy release dates and fuzzy due dates of jobs. The objective is to obtain a schedule which has...

This paper deals with scheduling problems of the Flexible manufacturing systems (FMS). The objective is to improve the utilization of FMS. Lot Streaming (LS) is used to meet this objective. In this paper a comparative study is performed between the applications of new methods: Brute Force method (BFM) and Joinable Schedule Approach (JSA). Case studies for Flow Shop Systems (FSS) are performed. ...