Vol.11, No2, 2011, pp.83-88
 UDC 669.295-112.8:539.431

SAFETY FACTORS ASSOCIATED WITH FATIGUE RESISTANCE OF TITANIUM HYBRID WELDED JOINTS

Caterina Casavola1, Carmine Pappalettere1, Guy Pluvinage2

1) DIMEG, Politecnico di Bari, Viale Japigia 182 - 70126 Bari, Italy, c.pruncu@poliba.it

2) LABPS, Université Paul Verlaine- Metz & ENIM, France

Abstract

This paper presents a detailed study on fatigue strength of welded joints made of two titanium alloys, grade 2 and grade 5, and welded by laser or hybrid process. Fatigue strength curves obtained for each alloy and each welding technique are compared in terms of safety factors with fatigue design curves of welded joints provided by standards.

Keywords: fatigue resistance, titanium alloys, laser and hybrid welding, fatigue strength reduction factor

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