A Multicriteria Decision-Making Model for Selecting Warehouse Rack Systems

Napat Srinual; Nantawan  Boonraksa

Authors

Napat Srinual Department of Logistics and Transportation Management, Faculty of Logistics and Transportation Management, Panyapiwat Institute of Management
Nantawan Boonraksa Department of Logistics and Transportation Management, Faculty of Logistics and Transportation Management, Panyapiwat Institute of Management

Keywords:

Multicriteria Decision Making, Analytical Hierarchy Process, Neutrosophic Sets, Warehouse Rack Systems

Abstract

Selecting the right racking system in warehouses significantly affects costs, productivity, and efficiency. This decision is complex due to various subjective factors. This study proposes a multicriteria decision making approach combining the Analytical Hierarchy Process (AHP) with Neutrosophic Sets (NSs) to manage uncertainty, ambiguity, and indeterminacy in the decision-making process. The study employs an AHP-NS model to determine criteria weights and rank potential racking storage systems. Five options were evaluated: Selective, Double-reach, Drive-in, Drive-through, and Push-back racks. These were assessed based on four primary criteria and ten sub-criteria, identified through literature review and experts. Six decision-makers from diverse roles, including top management, finance, engineering, procurement, and operations, were selected using stratified random sampling. Their input was crucial in evaluating the alternatives against the established criteria. The results revealed that “Speed” was the most critical factor, accounting for 37% of the decision weight, followed by utilization, cost, and type of access. Interestingly, LIFO and FIFO access methods were ranked least important at 3% and 4%, respectively. The Selective racking system emerged as the top choice, scoring 75% overall. This comprehensive approach offers a structured method for warehouse managers to make informed decisions on racking systems, considering multiple factors and stakeholder perspectives.

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