Mesoscale modelling of short crack initiation in metallic selective laser melting microstructures

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

1 Citation (Scopus)

Abstract

Selective Laser Melting (SLM), a type of Additive Manufacturing (AM), is versatile manufacturing method especially for rapid prototyping. One big issue with the method is components material integrity. Various types of defects can be left inside the material after sintering process. These defects often have derogative effect on materials fatigue life time. In this paper different material defect types are identified from Scanning Electron Microscope (SEM) images. Defected areas are transferred to Finite Element Models (FEM). Simple uniaxial tension test is performed to the models and results are incorporated into low cycle fatigue life time prediction. Residual stresses play also significant role in material endurance. Simple process model in created in order to predict residual stress levels.
Original languageEnglish
Title of host publicationEURO PM2015 congress proceedings
PublisherEuropean Power Metallurgy Association EPMA
ISBN (Electronic)978-1-899072-47-7
Publication statusPublished - 2015
MoE publication typeA4 Article in a conference publication
EventEuro PM2015 Power Metallurgy Congress and Exhibition, - Reims, France
Duration: 4 Oct 20157 Oct 2015

Conference

ConferenceEuro PM2015 Power Metallurgy Congress and Exhibition,
Abbreviated titleEuro PM2015
CountryFrance
CityReims
Period4/10/157/10/15

Fingerprint

Crack initiation
Melting
Microstructure
Lasers
Fatigue of materials
Defects
Residual stresses
3D printers
Rapid prototyping
Durability
Electron microscopes
Sintering
Scanning

Keywords

  • ProperTune

Cite this

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title = "Mesoscale modelling of short crack initiation in metallic selective laser melting microstructures",
abstract = "Selective Laser Melting (SLM), a type of Additive Manufacturing (AM), is versatile manufacturing method especially for rapid prototyping. One big issue with the method is components material integrity. Various types of defects can be left inside the material after sintering process. These defects often have derogative effect on materials fatigue life time. In this paper different material defect types are identified from Scanning Electron Microscope (SEM) images. Defected areas are transferred to Finite Element Models (FEM). Simple uniaxial tension test is performed to the models and results are incorporated into low cycle fatigue life time prediction. Residual stresses play also significant role in material endurance. Simple process model in created in order to predict residual stress levels.",
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Andersson, T, Laukkanen, A, Pinomaa, T, Jokinen, A, Vaajoki, A & Laitinen, T 2015, Mesoscale modelling of short crack initiation in metallic selective laser melting microstructures. in EURO PM2015 congress proceedings. European Power Metallurgy Association EPMA, Euro PM2015 Power Metallurgy Congress and Exhibition, , Reims, France, 4/10/15.

Mesoscale modelling of short crack initiation in metallic selective laser melting microstructures. / Andersson, Tom; Laukkanen, Anssi; Pinomaa, Tatu; Jokinen, Antero; Vaajoki, Antti; Laitinen, Tarja.

EURO PM2015 congress proceedings. European Power Metallurgy Association EPMA, 2015.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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AU - Andersson, Tom

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AU - Vaajoki, Antti

AU - Laitinen, Tarja

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AB - Selective Laser Melting (SLM), a type of Additive Manufacturing (AM), is versatile manufacturing method especially for rapid prototyping. One big issue with the method is components material integrity. Various types of defects can be left inside the material after sintering process. These defects often have derogative effect on materials fatigue life time. In this paper different material defect types are identified from Scanning Electron Microscope (SEM) images. Defected areas are transferred to Finite Element Models (FEM). Simple uniaxial tension test is performed to the models and results are incorporated into low cycle fatigue life time prediction. Residual stresses play also significant role in material endurance. Simple process model in created in order to predict residual stress levels.

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