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Identifying industry-specific components of product liability response system using Delphi-AHP method

Seo J. H., Bae S. M.

Management and Production Engineering Review

2016

Vol. 7, No. 4

27--38

PL (product liability) response system is an enterprise-wide system that prevents company’s financial loss due to PL-related accidents. Existing researches on PL response system are mainly focused on preventive and/or defense strategies for the companies. Also, it is obvious that each industry has their original characteristics related on PL issues. It means industryspecific characteristics should be considered to adopt PL response strategies. Thus, this paper aims to discuss industry-specific PL response system and their components. Based on prior researches, we tried to reveal the possibility of its application to manufacturing companies of existing PL response strategies using Delphi method with PL experts. Based on first round results, we tried to classify existing PL strategies of manufacturing companies into several categories. To validate our suggestion for essential components of PL response system, second round Delphi method are applied. Analytic hierarchy process (AHP) technique will be applied to identify a prioritized list of each components and strategies. Existing PL response strategies could be categorized with six components - strategy, technology, investment, training, awareness, and organization. Among six components, Technology - it represents the technology needed for improving the safety of all products – is the most important components to prepare PL accidents. The limitation of this paper is on the size of survey and variety of examples. However, the future study will enhance the potential of the proposed method. Regardless of rich research efforts to identify PL response strategies, there is no effort to categorize these strategies and prioritized them. Well-coordinated and actionable PL response strategies and their priorities could help small-and-medium sized enterprise (SME) to develop their own PL response system with their limited resources.

A study on numerical analysis of the resistance spot welding process

Zhigang H., Kim I. S., Son J. S., Kim H.-H., Seo J. H., Jang K. C., Lee D. K., Kuk J.M.

Journal of Achievements in Materials and Manufacturing Engineering

2006

Vol. 14, nr 1-2

140--145

Purpose: Over the last few years, there has been a growing interest in quantitative representation of heat transfer and fluid flow phenomena in weld pools in order to study relationships between the processing variables and the quality of the weldment produced and to use this information for the optimization and mobilization of the welding process. Design/methodology/approach: A 2D axisymmetric Finite Element Method (FEM) model has been developed to analyze the transient thermal behaviors of Resistance Spot Welding (RSW) process. In this model, the temperature dependent material properties, phase change and convectional boundary conditions were taken account for the improvement of the calculated accuracy, but the determination of the contact resistance at the surface is moderately simplified in order to reduce the calculating time through the analysis. Findings: The developed model has been employed the thermal history of the whole process (including cooling) and temperature distributions for any position in the weldment. Research limitations/implications: Future research in the field of RSW processing could focus on analysis of the stress and strain distributions as well as deformation in the weldment. Originality/value: It can be concluded that the maximum temperature was up to 1346°C, nearly the molten point of mild steel, and verified by the observation of the surface of the weldment after welding