Manufacturing Systems Module 10

Manufacturing Systems

• Manufacturing systems produce standardized products in large volumes.
• Composition includes three basic components: inputs, processes, and outputs.
• Inputs refer to raw materials and parts used in manufacturing.
• Processes involve methods and techniques for transforming inputs into outputs.
• Outputs are the final products or services resulting from the manufacturing process.
• Manufacturing systems coordinate resources, machines, and workers for efficient production.
• A well-designed manufacturing system is crucial for ensuring product quality and meeting customer expectations.
• These systems enhance efficiency and productivity, lowering costs and increasing profits.
• Manufacturing contributes to job creation and supports economic growth.

Service Systems

• Service systems exhibit higher uncertainty regarding capacity and costs.
• Arrival Process:
  • Customers can be classified based on source (infinite or finite).
  • Arrivals may be individual or in groups (single arrivals or batch arrivals).
  • Customers may arrive deterministically (at regular times) or stochastically (random intervals).

General Structure of Queuing Systems

• Service System:
  • Consists of structure and speed aspects.
  • Structure can vary from single server models (one service facility) to multiple parallel facilities.
  • Single server models feature one service point, like a library counter.
  • Multiple, parallel facilities with a single queue, where each server handles the same service (e.g., mechanics at a service station).
  • Multiple, parallel facilities with multiple queues, where different servers have separate queues (e.g., electricity bill counters).
  • Service facilities in a series can involve multiple service steps at different stations (e.g., machining processes).
• Speed of Service:
  • Expressed in terms of service rate (number of customers serviced over time) and service time (duration needed for servicing).
  • Service rate and service time are reciprocals indicating a facility's capacity.

Queue Structure

• Queue structure involves the discipline governing the order of service for waiting customers.
• First-come-first-served is one example of a common queue discipline.