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Design of experiments for laser metal deposition in maintenance, repair and overhaul applications

: Graf, Benjamin; Ammer, Stefan; Gumenyuk, Andrey; Rethmeier, Michael

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Procedia CIRP 11 (2013), pp.245-248
ISSN: 2212-8271
International Through-life Engineering Services Conference (TESConf) <2, 2013, Cranfield>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IPK ()
design of experiment; laser metal deposition; laser powder cladding; repair welding; MRO

Modern and expensive parts lead to an increasing demand for maintenance, repair and overhaul (MRO) technologies. Instead of part replacement, MRO technologies are economically advantageous throughout the life cycle. Laser metal deposition as modern MRO technology can be used to repair cracks or protect damaged surfaces with a hard facing layer. It is necessary to adjust weld bead profile to the specific task. For this purpose, Design of Experiment (DoE) has a high potential to decrease experimental effort. In this paper, a full factorial design is used to determine the effect of process parameters on the geometric dimensions of the weld bead. The paper is of interest to engineers working with laser metal deposition as well as DoE methods.