Period of processing for multi-entry and multi-outlet non-blocking serial production line

Abstract In a multistage serial production line, products with defect can be repaired or reworked to ensure high product quality. This paper studies a multistage serial manufacturing system with quality rework loops. Rework is the activity to repair or repeat the work on the defect parts during manufacturing processes, and it adds to cost and cycle time. This paper introduces an event-based data-enabled mathematical model for a stochastic production line with quality rework loops. The system performance properties are analyzed and permanent production loss due to quality rework loops is identified. The mathematical model and system performance identification methodology are studied analytically through numerical case studies.

Download Full-text

Energy Efficiency Management of an Integrated Serial Production Line and HVAC System

IEEE Transactions on Automation Science and Engineering ◽

10.1109/tase.2013.2284915 ◽

2014 ◽

Vol 11 (3) ◽

pp. 789-797 ◽

Cited By ~ 32

Author(s):

Michael P. Brundage ◽

Qing Chang ◽

Yang Li ◽

Guoxian Xiao ◽

Jorge Arinez

Keyword(s):

Energy Efficiency ◽

Production Line ◽

Hvac System ◽

Serial Production

Download Full-text

Standalone Throughput Analysis on the Wave Propagation of Disturbances in Production Sub-Systems

Journal of Manufacturing Science and Engineering ◽

10.1115/1.4024815 ◽

2013 ◽

Vol 135 (5) ◽

Cited By ~ 13

Author(s):

Yang Li ◽

Qing Chang ◽

Michael P. Brundage ◽

Guoxian Xiao ◽

Stephan Biller

Keyword(s):

Line Segment ◽

Production Line ◽

Evaluation Method ◽

Production Systems ◽

System Productivity ◽

Serial Production ◽

Multistage Manufacturing ◽

Performance Indexes ◽

Single Station ◽

Definition Of

Standalone throughput (SAT) of a single station is one of the most widely used performance indexes in industry due to its clear definition, ease of evaluation and the ability to provide a guidance for continuous improvement in production systems. A complex multistage manufacturing system is typically segmented into several subsystems for efficient local management. It is important to evaluate performance of each subsystem to improve overall system productivity. However, the definition of standalone throughput of a production subsystem is not as clear as for a single station in current literatures or in practice, not to say an effective evaluation method. This paper deals with the standalone throughput of a serial production line segment. The definition and implication of standalone throughput of a line segment is discussed. A data driven method is developed based on online production data and is proved analytically under a practical assumption. In addition, the method is verified through simulation case studies to be an accurate and fast estimation of the standalone throughput of a production line segment.

Download Full-text

c-Bottlenecks in serial production lines: Identification and application

Mathematical Problems in Engineering ◽

10.1155/s1024123x01001776 ◽

2001 ◽

Vol 7 (6) ◽

pp. 543-578 ◽

Cited By ~ 69

Author(s):

S.-Y. Chiang ◽

C.-T. Kuo ◽

S. M. Meerkov

Keyword(s):

Cycle Time ◽

Production Line ◽

Markovian Model ◽

Production Lines ◽

Serial Production ◽

Automotive Engine ◽

Machine Reliability ◽

Bottleneck Identification ◽

Serial Production Lines

The bottleneck of a production line is a machine that impedes the system performance in the strongest manner. In production lines with the so-called Markovian model of machine reliability, bottlenecks with respect to the downtime, uptime, and the cycle time of the machines can be introduced. The two former have been addressed in recent publications [1] and [2]. The latter is investigated in this paper. Specifically, using a novel aggregation procedure for performance analysis of production lines with Markovian machines having different cycle time, we develop a method for c-bottleneck identification and apply it in a case study to a camshaft production line at an automotive engine plant.

Download Full-text