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Lasers in Materia/ Processing leo H . J. F. Beckmann

Chair!Editor 16- 20 June 1997 Munich, FRG

Sponsored by EOS-The Eu ropean Opt ical Society SP IE- The lnternat ional Society for Opt ical Engin eering The Commissio n of the European Com m un iti es, Direc torate Gene rai for Science, Research , and Development

Volume 3097

PROCEEDINGS OF SPIE ~••n~n... .,_.

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SERI ES

Lasers in Materia/ Processing l eo H .

J. F. Bec kmann

Chair/Editor 16-20 June 1997 Munich, FRG

Sponsored by EOS-The Eu ropean Optical Society SP IE-T he lnternational Society fo r Optical Engineering The Commission of the European Communities, D irectorate Generai for Science, Research, and Development

Published by SP IE-The lnternational Society for Optical Engineering

p Volume 309 7

SPIE is an international techn ical society dedicated to advancing engineering and scientific applications of optical, photon ic, imaging, electronic, and optoelectronic technologies.

The papers appearing in this book compri se the proceedings of the meeting mentioned on the cover and title page. They reflect the authors' opinions and are published as presented and without change, in the interests of timely dissemination. Their inclusion in this publication does not necessarily consti tute endorsement by the editors or by SPIE.

Please use the following formatto cite materia! from this book: Author(s), 'Title of paper; in Lasers in Materia/ Processing, Leo H.). F. Beckmann, Editor, Proceedings of SPIE Vol. 3097, page numbers (1997).

ISSN 0277-786X ISBN 0-8194-25 17-6

Published by SPIE- Th e lnternational Society for Optical Engineering P.O. Box 10, Bellingham, Washington 98227-0010 USA Telephone 360/676-3290 (Pacific Time) • Fax 360/647-1445

Copyright . AS \ \

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Tab. l . Tensile testing blunch- Results obtained on stainless steeellaser welded specimens. 185

6. POSSffiLE INDUSTRIAL APPLICATIONS On the following some possìble industriai applications are Iisted : • Under-ground railway passenger coaches platforms; • TIR. and container railway coacbes platfonn ; • High-Speed railway passenger coaches platfonns and sìde frames (ICE, TGV, Transrapid, ETR) ; • Civil Building (External walls, Deadening or Fire Barrier internai walls and doors, mobile walls, false ceiling) ; • Off-Shore Platforms ; • Gunnecy Storehouses; • Doors and bulkheads (water-tight/fireproof/armour-plated/antideflagration) ; • Shìp hatches. submarine bulkheads, navy fireproofbulkhead ba.ffie plates; • Working and subsistence barracks or cabins (as a light and therrnal insulated structure).

7. ACKNOWLEDGEMENTS Thìs paper reports some results carried out under the European CETMA-STUDE project Works, partially funded by European Communìty. The authors wish to thank the P.I. GIUSEPPE CHIT A and P.I.MASSIMO CINQUEPALMI for their help, technìcal and technological works, laser workings and researchers and their precious discussions and collaborations.

8. REFERENCES L VA W Metawell Gmbh - Meta! Sandwich Technology, 1997 Depliant, Gennany. 2. Metawell- EFFECIVI Srl, Brescia, Italy, 1997 Depliant. 3. ESAB, Saldatura e Taglio, "Le Saldature sul treno ad alta velocità", pp.4, 1996. 4. P. Montagne: "Analysis, Design and Problems with Current Welded Steel Panels", pp. 4, University ofManchester, 1994. 5. Dawes: "Process Tolerances for Laser Welding Thìn Steel Sandwich Panels", The Welding Institute, 1995. 6. M. Oikawa, K. Minamida, N. Goto, M . Tendo: "Development of AH-Laser Welded Honey Comb Structures for High-Speed Civil Transports", ICALEO Proceed., 1993, pp. 453 to 462. 7. CENTRO INOX, Inossidabile, a quaterly review: Inox per le Costruzioni Ferroviare Vecchie e Nuove- Una realtà Italiana, December 1996, n. 126. pp. 2 to 3. 8. A. Chlasera: "Determinazione Sperimentale della Legge di Ritiro della Saldatura e sua Implementazione nell' Elemento Finito Saldatura", 1n Nat. Conf. sulla SALDATURA e le COSTRUZIONI SALDATE, Proceed. pp. 681 to 691, Genova. June, 1996. 9. A. Zucchini, A.D. Ludovico, G. Daurelio: " Studio e Realizzazione con Tecnologia di Saldatura a Laser C02 di Elementi Strutturali per Pianali Ferroviari-, 1st Nat. Conf. Sulla SALDATURA e le COSTRUZIONI SALDATE, Proceed., pp. 281 to 308, Genoa, June, 1996. 10. A. Vendramini: "Laser a Stelle e Strisce, "Meccanica e Automazione Review, n. 11, December 1995, pp. 118 to 122. 11. A. Ludovico, G. Daurelio: " Stainless Steel Lap Joints Laser Welded according to Mechanical Design Requirements" XXV A. I. A. S. Nat. Conf. and lnt. Conf. on MATERIAL ENGINEERING, 4 to 7 Sept. 1996, Gallipoli (Lecce), ltaly, Proceed., pp. 657-672. 12. G. Daurelio et ali. " Verifiche Sperimentali di Progettazione e Realizzazione Mediante Laser di Elementi Strutturali Modulari'' Progetto CETMA-STRIDE by ENEA and CENTRO LASER, Fase l, pp. l to 43 ./Fase 2, pp l to 48./Fasi 3 e 4. pp. 70, December 1996.

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