Publication detail

STUDY OF FATIGUE PROCESSES OF SELECTIVE LASER MELTING AND CONVENTIONAL PRODUCED MATERIALS

KRATOCHVÍLOVÁ, V. VLAŠIC, F. MAZAL, P.

Original Title

STUDY OF FATIGUE PROCESSES OF SELECTIVE LASER MELTING AND CONVENTIONAL PRODUCED MATERIALS

Type

conference paper

Language

English

Original Abstract

The main aim of the study is to compare fatigue processes and its acoustic emission (AE) signal of conventional produced material and material produced by selective laser melting (SLM) technology. The SLM offers the same benefits as the rest of the rapid prototyping technologies, the most important is big range of produced shapes, but without expensive moulds, cores or huge material waste. However the mechanical properties of these materials are currently worse than those of conventionally produced materials. AE method was used to get new information about fatigue damage of SLM materials. This study summarizes results from bending fatigue tests of reference Al alloy AW-2618A (AlCu2Mg1,5Ni) and SLM material with comparable chemical composition. Acquired AE and fatigue data from both materials were compared. The fractographic and metallographic analysis were also conducted as complement. Internal defects and inhomogenities in SLM materials cause different fracture behaviour than we can see at conventional materials. Differences in fatigue behaviour of SLM materials are strongly reflected in AE signal. The results may be used to improve the production of SLM materials in order to get better material characteristics. AE data helps to understand the fatigue behaviour of SLM materials in order to predict crack initiation.

Keywords

selective laser melting; acoustic emission method; fatigue; crack; Al alloy

Authors

KRATOCHVÍLOVÁ, V.; VLAŠIC, F.; MAZAL, P.

Released

7. 9. 2016

Publisher

VUTIUM Brno, Brno University of Technology

Location

Brno

ISBN

978-80-214-5386-9

Book

32nd European Conference on Acoustic Emission Testing

Edition

1st edition

Pages from

263

Pages to

270

Pages count

8

URL

http://cndt.cz/ewgae2016/

BibTex

@inproceedings{BUT129960,
  author="Vendula {Skřivánková} and František {Vlašic} and Pavel {Mazal}",
  title="STUDY OF FATIGUE PROCESSES OF SELECTIVE LASER MELTING AND CONVENTIONAL PRODUCED MATERIALS",
  booktitle="32nd European Conference on Acoustic Emission Testing",
  year="2016",
  series="1st edition",
  pages="263--270",
  publisher="VUTIUM Brno, Brno University of Technology",
  address="Brno",
  isbn="978-80-214-5386-9",
  url="http://cndt.cz/ewgae2016/"
}