Single Sourcing | ScienceGate

Single Sourcing and Multiple Sourcing in an Analysis of the Purchasing Strategy of a Selected Enterprise

Przegląd Organizacji ◽

10.33141/po.2013.05.03 ◽

2013 ◽

pp. 15-19

Author(s):

Agnieszka Rutkowska

Keyword(s):

Multiple Sourcing ◽

Single Sourcing

Tematem artykułu jest jeden z obszarów decyzyjnych wyróżnianych w ramach strategii zakupów - struktura bazy dostawców. Rozpatrywany jest on wg kryterium liczebności dostawców, zgodnie z którym wyróżnia się dwie główne strategie: single sourcing i multiple sourcing. Artykuł rozpoczyna się wprowadzeniem teoretycznym dotyczącym strategii i strategii zakupów. Następnie przeanalizowana zostaje struktura bazy dostawców wybranego przedsiębiorstwa pod kątem stosowanej strategii. Analiza opiera się na czterech kategoriach dóbr wyróżnionych w macierzy Kraljica: strategicznych, o charakterze dźwigni, wąskich gardeł i zwykłych oraz prawidłowym doborze odpowiadających im strategii single i multiple sourcing. (abstrakt oryginalny)

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Improving effectiveness of spare parts supply by additive manufacturing as dual sourcing option

OR Spectrum ◽

10.1007/s00291-020-00608-7 ◽

2020 ◽

Cited By ~ 1

Author(s):

N. Knofius ◽

M. C. van der Heijden ◽

A. Sleptchenko ◽

W. H. M. Zijm

Keyword(s):

Additive Manufacturing ◽

Spare Parts ◽

Aviation Industry ◽

Failure Behavior ◽

Dual Sourcing ◽

Production Methods ◽

Holding Costs ◽

Unit Costs ◽

Single Sourcing ◽

Low Volume

Abstract The low-volume spare parts business is often identified as a potential beneficiary of additive manufacturing (AM) technologies. Currently, high AM unit costs or low AM part reliabilities deem the application of AM economical inferior to conventional manufacturing (CM) methods in most cases. In this paper, we investigate the potential to overcome these deficiencies by combining AM and CM methods. For that purpose, we develop an approach that is tailored toward the unique characteristics of dual sourcing with two production methods. Opposed to the traditional dual sourcing literature, we consider the different failure behavior of parts produced by AM and CM methods. Using numerical experiments and a case study in the aviation industry, we explore under which conditions dual sourcing with AM performs best. Single sourcing with AM methods typically leads to higher purchasing and maintenance costs while single sourcing with CM methods increases backorder and holding costs. Savings of more than 30% compared to the best single sourcing option are possible even if the reliability or unit costs of a part sourced with AM are three times worse than for a CM part. In conclusion, dual sourcing methods may play an important role to exploit the benefits of AM methods while avoiding its drawbacks in the low-volume spare parts business.

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