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Introducing buffer management in a manufacturing planning and control framework
Jönköping University, School of Engineering, JTH, Industrial Engineering and Management.ORCID iD: 0000-0003-4241-4407
Jönköping University, School of Engineering, JTH, Industrial Engineering and Management.ORCID iD: 0000-0003-2252-5337
Jönköping University, School of Engineering, JTH, Industrial Engineering and Management.ORCID iD: 0000-0002-8305-4412
2017 (English)In: Advances in Production Management Systems. The Path to Intelligent, Collaborative and Sustainable Manufacturing: IFIP WG 5.7 International Conference, APMS 2017, Hamburg, Germany, September 3-7, 2017, Proceedings, Part II / [ed] Lödding, Hermann; Riedel, Ralph; Thoben, K.-D.; Von Cieminski, Gregor; Kiritsis, Dimitris, Springer-Verlag New York, 2017, Vol. 514, p. 366-373Conference paper, Published paper (Refereed)
Abstract [en]

Buffer management is not of a great concern when there is a perfect match between demand and supply. Demand represents the requirement for resources, and supply represents the collective capability of the resources to fulfill the requirements. A perfect match would then represent that supply can fulfill demand without any buffers involved, such as materials prepared in advance or capacity not being fully loaded. Such a perfect match is usually not possible to achieve since demand is frequently difficult to predict and the agility of the supply is limited. As a consequence, supply cannot perfectly match demand which may result in insufficient delivery performance. Different types of buffers may be employed to improve performance but they should only be used when the contribution of a buffer is greater than the cost of it. Hence, management of buffers is an important part of manufacturing planning and control (MPC) in order to mitigate such imbalances in pursuit of a competitive supply. The purpose here is therefore to define a framework for MPC that reflects the significance of buffers. To actually establish competitive supply is a complex challenge and four management perspectives are identified to support the balancing of supply with demand. Buffer management is here defined based on the intersection of these four management perspectives related to the transformation flow: the resources employed in the flow, the risk involved in the flow, the decision making related to the flow, and finally the planning and control to balance the flow.

Place, publisher, year, edition, pages
Springer-Verlag New York, 2017. Vol. 514, p. 366-373
Series
IFIP advances in information and communication technology, ISSN 1868-4238 ; 514
Keywords [en]
Balance management, Hierarchical management, Manufacturing planning and control, Resource management, Risk management, Competition, Manufacture, Buffer management, Delivery performance, Demand and supply, Improve performance, Planning and control, Decision making
National Category
Business Administration
Identifiers
URN: urn:nbn:se:hj:diva-38345DOI: 10.1007/978-3-319-66926-7_42Scopus ID: 2-s2.0-85029433273ISBN: 9783319669250 (print)ISBN: 9783319669267 (electronic)OAI: oai:DiVA.org:hj-38345DiVA, id: diva2:1170817
Conference
IFIP WG 5.7 International Conference on Advances in Production Management Systems, APMS 2017, Hamburg, Germany, 3 - 7 September 2017
Available from: 2018-01-04 Created: 2018-01-04 Last updated: 2019-05-14Bibliographically approved
In thesis
1. Reducing and absorbing variations in a manufacturing context: A capacity management perspective
Open this publication in new window or tab >>Reducing and absorbing variations in a manufacturing context: A capacity management perspective
2019 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Variations can have substantially negative effects on performance and it is therefore important to investigate how the variations can be reduced or absorbed in an appropriate way for competitiveness. Manufacturing companies are daily exposed to variations and operations managers need to take capacity management decisions with this in mind to secure the delivery capability. The current body of knowledge mainly focus on techniques for root cause analysis for reducing variations, especially in the manufacturing processes, neglecting the fact that both internally and externally generated variations are more or less possible to affect. Buffers are traditionally associated with waste and unfavourable performance, while the right buffers can be of strategic importance. The purpose of this research is therefore to increase the understanding of causes for variations, actions to reduce variations and how buffers can be used to mitigate negative effects of variations related to capacity management in a manufacturing context.

Three research studies have been conducted, including four appended papers, to fulfil the purpose. These studies encompassed different combinations of traditional literature reviews, conceptual research with logical reasoning and case study research. The findings demonstrate that working on mitigating negative effects of variations is a complex challenge and not just about choosing to reduce or absorb the variations. In general, it is concluded that the variation management and buffer management include several aspects to consider with implications for the capacity management. In addition, the results indicate that the decisions in manufacturing companies tend to be based on intuition and previous experience due to a lack of decision support. Furthermore, the participating companies perceive that several of their internal routines contribute to their prevailing variations. This research contributes to an awareness of causes for variations that are possible to affect, possible actions to reduce the variations and the purposes of different buffers to absorb variations. This is sought to facilitate a systematic way of working with reducing and absorbing variations, creating support in the variation management and the buffer management from a capacity management perspective.

Abstract [sv]

Variationer kan medföra negativa effekter för en verksamhets prestation och det är därmed viktigt att utforska hur variationerna kan reduceras eller absorberas på lämpligt sätt för att verksamheten ska vara konkurrenskraftig. Tillverkande företag är dagligen exponerade för variationer och produktionschefer behöver beakta detta i kapacitetsadministrationen för att säkerställa leveransförmågan. Befintlig litteratur fokuserar främst på tekniker för att analysera grundorsaker inom tillverkningsprocesserna och ignorerar det faktum att både internt och externt genererade variationer är mer eller mindre påverkbara. Buffertar associeras traditionellt med oönskat slöseri fastän rätt buffertar kan vara av strategisk betydelse. Syftet med denna forskning är därmed att öka förståelsen för orsaker till variationer, åtgärder för att reducera variationer och hur buffertar kan tillämpas för att överkomma negativa effekter av variationer i relation till kapacitetsadministration inom en tillverkningskontext.

Tre forskningsstudier, innefattande fyra publikationer, har genomförts för att uppfylla syftet. Dessa studier består av en kombination av traditionella litteraturstudier, konceptuell forskning med logiska resonemang och fallstudier i tillverkande företag. Resultaten visar att arbetet med att hantera negativa effekter av variationer är en komplex utmaning som stäcker sig bortom valet av att reducera eller absorbera variationerna. Generellt dras slutsatsen att det är flertalet aspekter att beakta för variationsadministration och buffertadministration med implikationer för kapacitetsadministrationen. Det visade sig att besluten tenderar att vara baserat på intuition och erfarenheter i tillverkande företag, mycket till följd av en avsaknad av beslutsstöd. Vidare framgår det att de medverkande företagen upplever att flera av deras interna rutiner bidrar till upphovet av variationer. Denna forskning bidrar till en ökad medvetenhet om orsaker till variationer som är påverkbara inom företag, möjliga åtgärder för att reducera variationerna och syftet med olika buffertar för att absorbera variationer. Detta är avsett att underlätta ett systematiskt arbetssätt för att reducera och absorbera variationer, samt utgöra ett stöd för variationsadministration och buffertadministration från ett kapacitetsadministrationsperspektiv.

Place, publisher, year, edition, pages
Jönköping: Jönköping University, School of Engineering, 2019. p. 73
Series
JTH Dissertation Series ; 042
Keywords
capacity management, variation management, buffer management, manufacturing companies, manufacturing planning and control, kapacitetsadministration, variationsadministration, buffertadministration, tillverkande företag, material- och produktionsstyrning
National Category
Business Administration Production Engineering, Human Work Science and Ergonomics
Identifiers
urn:nbn:se:hj:diva-43666 (URN)978-91-87289-45-3 (ISBN)
Presentation
2019-05-27, E4404, Jönköping University, School of Engineering, Jönköping, 10:00 (English)
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Available from: 2019-05-14 Created: 2019-05-14 Last updated: 2019-05-14Bibliographically approved

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Hedvall, LisaWikner, JoakimHilletofth, Per

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