Change search
Link to record
Permanent link

Direct link
BETA
Castagliola, Philippe
Publications (7 of 7) Show all publications
Castagliola, P., Maravelakis, P., Psarakis, S. & Vännman, K. (2009). Monitoring capability indices using run rules (ed.). Paper presented at . Journal of Quality in Maintenance Engineering, 15(4), 358-370
Open this publication in new window or tab >>Monitoring capability indices using run rules
2009 (English)In: Journal of Quality in Maintenance Engineering, ISSN 1355-2511, E-ISSN 1758-7832, Vol. 15, no 4, p. 358-370Article in journal (Refereed) Published
Abstract [en]

PurposeThe purpose of this paper is propose a methodology for monitoring industrial processes that cannot be stabilized, but are nevertheless capable. Design/methodology/approach The proposed procedure uses the C P (u,v) family of capability indices proposed by Vännman (including the indices C PK , C PM , C PMK ) combined with one-sided two-out-of-three and three-out-of-four run rules strategies. FindingsThis paper introduces a new strategy, where capability indices are monitored in place of the classical sample statistics like the mean, median, standard deviation or range. Practical implicationsWhen doing a capability analysis it is recommended to first check that the process is stable, e.g. by using control charts. However, there are occasions when a process cannot be stabilized, but is nevertheless capable. Then the classical control charts fail to efficiently monitor the process position and variability. The approach suggested in this paper overcomes this problem. Originality/valueThe experimental results presented in this paper demonstrate how the new proposed approach efficiently monitors capable processes by detecting decreases or increases of capability level.

National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-7878 (URN)10.1108/13552510910997733 (DOI)64d993f0-ceca-11de-b769-000ea68e967b (Local ID)64d993f0-ceca-11de-b769-000ea68e967b (Archive number)64d993f0-ceca-11de-b769-000ea68e967b (OAI)
Note
Validerad; 2009; 20091111 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Castagliola, P. & Vännman, K. (2008). Average run length when monitoring capability indices using EWMA (ed.). Paper presented at . Quality and Reliability Engineering International, 24(8), 941-955
Open this publication in new window or tab >>Average run length when monitoring capability indices using EWMA
2008 (English)In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 24, no 8, p. 941-955Article in journal (Refereed) Published
Abstract [en]

In order to monitor unstable but capable processes Castagliola and Vännman have recently suggested a procedure based on an EWMA approach, called EWMA capability chart, for monitoring Vännman's Cp(u,v)-family of capability indices and showed how their proposed approach efficiently monitors capable processes by detecting a decrease or increase in the capability level. The goal of this paper is to investigate the efficiency of this capability chart in terms of ARL. The procedure used for computing this ARL is presented and simple guidelines for obtaining approximations to the optimal EWMA parameters are proposed.

National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-13713 (URN)10.1002/qre.940 (DOI)000261809000009 ()2-s2.0-61349137575 (Scopus ID)cff894a0-6df6-11dd-ad27-000ea68e967b (Local ID)cff894a0-6df6-11dd-ad27-000ea68e967b (Archive number)cff894a0-6df6-11dd-ad27-000ea68e967b (OAI)
Note
Validerad; 2008; 20080819 (ysko)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Castagliola, P. & Vännman, K. (2007). Monitoring capability indices using an EWMA approach (ed.). Paper presented at . Quality and Reliability Engineering International, 23(7), 769-790
Open this publication in new window or tab >>Monitoring capability indices using an EWMA approach
2007 (English)In: Quality and Reliability Engineering International, ISSN 0748-8017, E-ISSN 1099-1638, Vol. 23, no 7, p. 769-790Article in journal (Refereed) Published
Abstract [en]

When performing a capability analysis it is recommended to first check that the process is stable, for example, by using control charts. However, there are occasions when a process cannot be stabilized, but it is nevertheless capable. Then the classical control charts fail to efficiently monitor the process position and variability. In this paper we propose a new strategy to solve this problem, where capability indices are monitored in place of the classical sample statistics such as the mean, median, standard deviation, or range. The proposed procedure uses the Cp(u,v) family of capability indices proposed by Vännman combined with a logarithmic transformation and an EWMA approach. One important property of the procedure presented here is that the control limits used for the monitoring of capability indices only depend on the capability level assumed for the process. The experimental results presented in this paper demonstrates how this new approach efficiently monitors capable processes by detecting changes in the capability level.

National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-14940 (URN)10.1002/qre.838 (DOI)000250845100002 ()2-s2.0-35948977285 (Scopus ID)e60d0c30-8233-11dc-896e-000ea68e967b (Local ID)e60d0c30-8233-11dc-896e-000ea68e967b (Archive number)e60d0c30-8233-11dc-896e-000ea68e967b (OAI)
Note
Validerad; 2007; 20071024 (kerstinv)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved
Castagliola, P., Maravelakis, P., Psarakis, S. & Vännman, K. (2007). Monitoring capability indices using run rules (ed.). In: (Ed.), (Ed.), Proceedings of International Conference on Industrial Engineering and Systems Management, ISEM 07: . Paper presented at International Conference on Industrial Engineering and Systems Management : 30/05/2007 - 02/06/2007. : ISEM 07
Open this publication in new window or tab >>Monitoring capability indices using run rules
2007 (English)In: Proceedings of International Conference on Industrial Engineering and Systems Management, ISEM 07, ISEM 07 , 2007Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
ISEM 07, 2007
National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-34732 (URN)902738f0-5a2d-11dc-8a1d-000ea68e967b (Local ID)978-7-302-15312-2 (ISBN)978-7-89486-439-0 (ISBN)902738f0-5a2d-11dc-8a1d-000ea68e967b (Archive number)902738f0-5a2d-11dc-8a1d-000ea68e967b (OAI)
Conference
International Conference on Industrial Engineering and Systems Management : 30/05/2007 - 02/06/2007
Note
Godkänd; 2007; Bibliografisk uppgift: CD-ROM; 20070903 (ysko)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2017-11-25Bibliographically approved
Castagliola, P. & Vännman, K. (2007). The efficiency of the EWMA capability chart (ed.). In: (Ed.), Martin Helander (Ed.), IEEE International Conference on Industrial Engineering and Engineering Management, 2007: IEEM 2007 ; 2 - 4 Dec. 2007, Singapore. Paper presented at IEEE International Conference on Industrial Engineering and Engineering Management : 02/12/2007 - 05/12/2007 (pp. 1389-1393). Piscataway, NJ: IEEE Communications Society
Open this publication in new window or tab >>The efficiency of the EWMA capability chart
2007 (English)In: IEEE International Conference on Industrial Engineering and Engineering Management, 2007: IEEM 2007 ; 2 - 4 Dec. 2007, Singapore / [ed] Martin Helander, Piscataway, NJ: IEEE Communications Society, 2007, p. 1389-1393Conference paper, Published paper (Refereed)
Abstract [en]

In order to monitor unstable but capable processes Castagliola & Vännman have recently suggested a procedure based on an EWMA approach, called EWMA capability chart, for monitoring Vännman's Cp(u, v)-family of capability indices and showed how their proposed approach efficiently monitors capable processes by detecting a decrease or increase of the capability level. The goal of this paper is to investigate the efficiency of this capability chart by computing optimal EWMA parameters yielding the smallest possible ARL's. The method for computing the ARL is explained and a table summarizing optimal values for the EWMA parameters (λ*,K*) is given for the Cpk chart.

Place, publisher, year, edition, pages
Piscataway, NJ: IEEE Communications Society, 2007
National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-39956 (URN)10.1109/IEEM.2007.4419420 (DOI)000253974001064 ()40649127231 (Scopus ID)ee6d1a60-a8ca-11dc-9057-000ea68e967b (Local ID)978-1-424-41528-1 (ISBN)ee6d1a60-a8ca-11dc-9057-000ea68e967b (Archive number)ee6d1a60-a8ca-11dc-9057-000ea68e967b (OAI)
Conference
IEEE International Conference on Industrial Engineering and Engineering Management : 02/12/2007 - 05/12/2007
Note
Godkänd; 2007; 20071212 (kerstinv)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2018-07-10Bibliographically approved
Castagliola, P. & Vännman, K. (2006). Monitoring capability indices using EWMA (ed.). Paper presented at . Luleå: Department of Mathematics, Luleå University of Technology
Open this publication in new window or tab >>Monitoring capability indices using EWMA
2006 (English)Report (Other academic)
Place, publisher, year, edition, pages
Luleå: Department of Mathematics, Luleå University of Technology, 2006. p. 28
Series
Gula serien, ISSN 1400-4003 ; 2006:01
National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-25237 (URN)e4dd11b4-024a-478e-b234-035b87d453c1 (Local ID)e4dd11b4-024a-478e-b234-035b87d453c1 (Archive number)e4dd11b4-024a-478e-b234-035b87d453c1 (OAI)
Note
Godkänd; 2006; 20120828 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2017-11-24Bibliographically approved
Vännman, K. & Castagliola, P. (2006). Monitoring Unstable But Capable Processes with the CP(u,v) System of Capability Indices (ed.). In: (Ed.), Hoang Pham (Ed.), 2006 proceedings: Twelfth ISSAT International Conference Reliability and Quality in Design : August 3 - 5, 2006, Chicago, Illinois, U.S.A.. Paper presented at ISSAT International Conference on Reliability and Quality in Design : 03/08/2006 - 05/08/2006 (pp. 220-224). New Brunswick, NJ: International Society of Science and Applied Technologies
Open this publication in new window or tab >>Monitoring Unstable But Capable Processes with the CP(u,v) System of Capability Indices
2006 (English)In: 2006 proceedings: Twelfth ISSAT International Conference Reliability and Quality in Design : August 3 - 5, 2006, Chicago, Illinois, U.S.A. / [ed] Hoang Pham, New Brunswick, NJ: International Society of Science and Applied Technologies , 2006, p. 220-224Conference paper, Published paper (Refereed)
Place, publisher, year, edition, pages
New Brunswick, NJ: International Society of Science and Applied Technologies, 2006
National Category
Probability Theory and Statistics
Research subject
Mathematical Statistics with special emphasis on Industrial Statistic
Identifiers
urn:nbn:se:ltu:diva-37036 (URN)ae8ba340-5a2c-11dc-8a1d-000ea68e967b (Local ID)0-9763486-1-6 (ISBN)ae8ba340-5a2c-11dc-8a1d-000ea68e967b (Archive number)ae8ba340-5a2c-11dc-8a1d-000ea68e967b (OAI)
Conference
ISSAT International Conference on Reliability and Quality in Design : 03/08/2006 - 05/08/2006
Note
Godkänd; 2006; 20070903 (ysko)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

Search in DiVA

Show all publications