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Multivariate process capability analysis applied on a thermal spraying process
Högskolan Väst, Institutionen för ingenjörsvetenskap, Avd för lantmäteriteknik och matematik. (Termisk sprutning)ORCID-id: 0000-0002-2965-488X
Umeå universitet & Luleå tekniska universitet.
2011 (engelsk)Inngår i: 25th International Conference on Surface Modification Technologies, SMT25, University West in Trollhättan, Sweden, on June 20-22, 2011., 2011Konferansepaper, Oral presentation only (Fagfellevurdert)
Abstract [en]

Abstract

Our interest in multivariate capability indices (MPCI) is based on a case from a thermal spray­ing process at Volvo Aero Corporation, Sweden, where they wanted to determine the process capability of a three-dimensional variable. The process can be characterized as a high temperature “spray paint­ing” to protect the sprayed surface against, e.g. heat, corrosion and erosion. Different porosity is desirable depending on what the thermally sprayed coating should protect against. There is a relation be­tween the porosity and the in-flame variables and it would be preferable to se­cure the porosity during spraying instead as of today, afterwards. Since the three-dimensional, in-flame, variables are correlated one way to do this could be to calculate a MPCI of the in-flame variables. There are a number of different MPCIs described in the literature, but for only a hand­ful of these confidence intervals have been derived. In practise the conclusion about process capability must be drawn from a random sample. Hence, confidence or tests for MPCIs are important. Four different available methods for calcu­lating confidence intervals of MPCIs are being reviewed and compared. Current investigation shows issues that need to be solved before the studied methods can be applied more generally in practice.

sted, utgiver, år, opplag, sider
2011.
HSV kategori
Forskningsprogram
TEKNIK, Produktions- och materialteknik
Identifikatorer
URN: urn:nbn:se:hv:diva-3586OAI: oai:DiVA.org:hv-3586DiVA, id: diva2:439607
Konferanse
SMT25
Tilgjengelig fra: 2011-09-08 Laget: 2011-09-08 Sist oppdatert: 2015-06-24bibliografisk kontrollert

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