DANUBE ADRIA ASSOCIATION FOR AUTOMATION & MANUFACTURING DAAAM International Vienna

DAAAM Baltic

PROCEEDINGS

OF THE 6TH INTERNATIONAL CONFERENCE OF DAAAM BALTIC INDUSTRIAL ENGINEERING

24-26th APRIL 2008, TALLINN, ESTONIA

ORGANIZED UNDER THE AUSPICES OF DAAAM INTERNATIONAL VIENNA

in co-operation with:

BALTECH Consortium Estonian Academy of Sciences

Federation of Estonian Engineering Industry Association of Estonian Mechanical Engineers

EDITED BY R.KYTTNER

TALLINN UNIVERSITY OF TECHNOLOGY

Foreword

Over the past 12 years, DAAAM-Baltic has been an international forum for researchers and engineers to present their research results in the areas of industrial engineering, manufacturing and automation. It provides an avenue for discussion and exchange of new ideas addressing new techniques and methods for product development and manufacturing engineering. This DAAAM-Baltic-2008 conference in the DAAAM-Baltic

Conference series will continue the mission of the series, which is to give for young and active scientists of the Baltic Sea region an opportunity to introduce their works and find partners. Technological research and development efforts have gained greater and greater support from both government and business. Dynamic technology change, short product life cycle, automation and computerization and innovation characterize the knowledge-based economy. Our society needs engineers and managers equipped with technological knowledge, global vision, and professional management knowledge in order to meet the challenges of this new age. The fundamental objective of this conference is to combine theory with practice. The Conference addresses the issues of managing globalisation in the internet age. Its scope ranges from design engineering, production engineering, production management to materials engineering, with an emphasis on innovative practices, to ensure that the focus of the conference is on learning, networking and generating new ideas. The main idea of starting these DAAAM-Baltic meetings was to organize regional conferences of DAAAM International events (DAAAM – Danube-Adrian Association for Automation & Manufacturing). DAAAM International is association for international scientific and academic cooperation in the fields of intelligent automation and modern production. DAAAM-Baltic is organized in Estonia every second year. Estonia has been represented as a member of International DAAAM Committee since 1994. In year 2008 we have 6th Conference of DAAAM-Baltic and 12 years of history of publishing the Proceedings. The Proceedings of DAAAM-Baltic are included in Index to Scientific & Technical Proceedings (ISTP/ISI Proceedings) of Thomson Scientific - Institute for Scientific Information. In 2008 we received about 200 proposals from 18 countries. Over a hundred participants from 13 countries take part in the Conference. All proposals have been carefully selected and full texts of presentations peer-reviewed to address key topics of the conference. 95 papers were selected to present orally. Half of proposals were rejected on the grounds of either not being appropriate for the areas that DAAAM-Baltic covers or being of rather narrow and specialized nature. We wish to thank all authors, referees, members of the Organizing Committee and Program Committee, as well as supportive organizations for their efforts which made this conference possible. DAAAM-Baltic would not be possible without contributions from members of the scientific community of the Baltic-Sea region. We look forward to a very exciting and stimulating conference, and hope that you will join us in next DAAAM-Baltic in 2010. Tallinn; April 2008 Rein Küttner Chairman of the Scientific Committee DAAAM-Baltic 2008

The President of DAAAM Estonia expresses special personal thank to Professor Branko Katalinic for encouraging to organise and for advising during the organisation of the conference. Also special thanks for the support during the organising the conference to the following persons: T.Otto, A.Hermaste, E.Jürves, E.Mesila, I.Veldi, K.Pääsuke, B.Münter, A.Napp.

EDITORS’ NOTE This publication was reproduced by the photo process, using the soft copies supplied by their authors. The editor and the DAAAM Baltic are not responsible either for the statements or for the opinion expressed in this publication. Copyright © 2008 by Tallinn University of Technology Abstracting and non-profit use of the material is permitted with credit to the source. Libraries are permitted to photocopy for private use of patrons. Instructors are permitted to photocopy isolated articles for non-commercial classroom use without fee. After this work has been published by the DAAAM Baltic, the authors have right to republish it, in whole or part, in any publication of which they are an author or editor, and to make other personal use of the work. Any republication, referencing, or personal use of the work must explicitly identify prior publication in the Proceedings of 6th International Conference of DAAAM Baltic INDUSTRIAL ENGINEERING, Editor R.Kyttner, 24-26 April 2008, Tallinn, Estonia, including page numbers. Proceedings of 6th International Conference of DAAAM Baltic INDUSTRIAL ENGINEERING Editor R.Kyttner 24-26 April 2008, Tallinn, Estonia © Layout & Design: B. Katalinic, R.Kyttner, T. Otto Technical Editor: A. Hall Additional copies can be obtained from the publisher: DAAAM Baltic, Tallinn University of Technology, Ehitajate tee 5, 19086 Tallinn Estonia Phone: +372 620 3265, Fax: +372 620 2020, E-mail: rein.kyttner@ttu.ee

Steering Committee

Rein Kyttner - chair

Mart Tamre

Renno Veinthal

Aadu Paist

Lembit Roosimölder

International Program Committee

M. Airila (FIN)

J.Balic (SLV)

F. Boór (HUN)

S.Bockus (LIT)

J.Brnić (CRO)

M.Eerme (EST)

L.Hagman (SWE)

H.Jähn (GER)

T.Karaulova (EST)

B.Katalinic (AUT)

T.Kjellberg (SWE)

P. Kulu (EST)

P.Kuosmanen (FIN)

J.Lavrentjev (EST

V.Mironov (LAT)

S.Ottosson (SWE)

J.-G.Persson (SWE)

P.Pukk (SWE)

V. Reedik (EST)

J. Riives (EST)

A.Schulz (LAT)

F.Sergejev (EST)

A. Siirde (EST)

M.Veveris (UK)

T.Virvalo (FIN)

A.Zawada-Tomkiewicz (POL)