System reliability, setup cost reduction of sustainable manufacturing for shoes and its raw materials supply chain

• Main Authors: Nandra, Richa, Majumder, Arunava
• Format: Conference Proceeding
• Language: English
• Subjects: Arsenic; Contaminants; Footwear; Graphical representations; Greenhouse gases; Lean manufacturing; Mean time to failure; Optimization; Product quality; Production costs; Raw materials; Social factors; Supply chains; Sustainable development; System reliability
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0194265

The rate at which a product is manufactured has a significant effect on its excellence. The manufacturing quality deteriorates as the manufacturing rate increases. It is aimed at developing a model of a single vendor multi-buyer shoe supply chain with variables such as manufacturing costs, product quality, environmental factors, and social factors that affect supply chains. Based on the shoe manufacturing rate, a unit shoe manufacturing cost is calculated. Moreover, manufacturing rate increases result in deterioration of product quality. As an indicator of reliability, mean time to failure (MTTF) is calculated as an inverse function of manufacturing rate. The surge in released waste from manufacturing units, with increased manufacturing, raises the level of greenhouse gases emissions with other pollutants. Even, during the manufacturing of shoes many chemicals such as arsenic, cadmium, chromium, cobalt, copper, lead, mercury, nickel, and zinc are used. Also, the ultimate last step of shoes disposal add great environment concerns. Moreover, shoe manufacturing is a labor intensive process. Hence, in order to reduce the environmental pollution causing environment as well as social disturbances and harms, industries necessitate investing an amount either for technological development or as the carbon tax. Recently, the industries are aware of investing in social welfare also as insurances and other benefits to its labors along with the environmental cost as it is important for a long term sustainable development. Besides, investment in technology to reduce the emission of green house gases and other contaminants may result increase the total cost of a shoe firm. Therefore, an attempt to trim down setup cost is also employed by assuming a variable investment to encourage lean manufacturing. Considering all these facts a cost minimization model is developed which is solved to obtain a global optimal strategy. Numerical solution and graphical representations are given to examine the effect of sustainability cost parameters to total supply chain cost.