Quality Control of Laser-Beam-Melted Parts by a Correlation Between Their Mechanical Properties and a Three-Dimensional Surface Analysis

Grimm, Tobias; Wiora, Georg; Witt, Gerd

doi:10.1007/s11837-016-2190-9

Cited by 4 publications

(2 citation statements)

References 12 publications

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“…While rather large defects of the order of millimeters are considered in a damage tolerance analysis, much smaller defects ranging from tens of micrometers play a role in safe life (see Section 2.1). A property that must be measured in any case is surface roughness [329].…”

Section: Specific Challenges and Requirementsmentioning

confidence: 99%

Damage tolerant design of additively manufactured metallic components subjected to cyclic loading: State of the art and challenges

Zerbst

Bruno

Buffière

et al. 2021

Progress in Materials Science

142

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Section: Specific Challenges and Requirementsmentioning

confidence: 99%

Damage tolerant design of additively manufactured metallic components subjected to cyclic loading: State of the art and challenges

Zerbst

Bruno

Buffière

et al. 2021

Progress in Materials Science

142

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“…In the literature on AM surface characterisation, the method is mainly used for areal characterisation [9,20,37,40,41], but extracting and evaluating line profiles is possible.…”

Section: Methods For Surface Texture Characterisation Laser Scanning ...mentioning

confidence: 99%

Comparison of Optical and Stylus Methods for Surface Texture Characterisation in Industrial Quality Assurance of Post-Processed Laser Metal Additive Ti-6Al-4V

et al. 2023

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Additive manufacturing technologies enable lightweight, functionally integrated designs and development of biomimetic structures. They contribute to the reduction in material waste and decrease in overall process duration. A major challenge for the qualification for aerospace applications is the surface quality. Considering Ti-64 laser powder bed fusion (LPBF) parts, particle agglomerations and resulting re-entrant features are characteristic of the upper surface layer. Wet-chemical post-processing of the components ensures reproducible surface quality for improved fatigue behaviour and application of functional coatings. The 3D SurFin® and chemical milling treatments result in smoother surface finishes with characteristic properties. In order to characterise these surfaces, three methods for surface texture measurement (contact and non-contact) were applied, namely confocal microscopy, fringe projection and stylus profilometry. The aim of this work was to show their suitability for measurement of laser powder bed fusion as-built and post-processed surfaces and compare results across the evaluated surface conditions. A user-oriented rating of the methods, summarising advantages and disadvantages of the used instruments specifically and the methods in general, is provided. Confocal microscopy reaches the highest resolution amongst the methods, but measurements take a long time. The raw data exhibit large measurement artefacts for as-built and chemically milled conditions, requiring proper data post-processing. The stylus method can only capture 2D profiles and the measurement was restricted by particle agglomerations and craters. However, the method (process and instrument) is entirely standardised and handheld devices are inexpensive, making it accessible for a large group of users. The fringe projection method was the quickest and easiest regarding measurement and data post-processing. Due to large areal coverage, reproduction of location when performing repeat measurements is possible. The spatial resolution is lower than for confocal microscopy but is still considered sufficiently high to characterise the investigated surface conditions.

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Characterisation and correlation of areal surface texture with processing parameters and porosity of High Speed Sintered parts

Zhu

Lou

Majewski

2020

Additive Manufacturing

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Quality Control of Laser-Beam-Melted Parts by a Correlation Between Their Mechanical Properties and a Three-Dimensional Surface Analysis

Cited by 4 publications

References 12 publications

Damage tolerant design of additively manufactured metallic components subjected to cyclic loading: State of the art and challenges

Damage tolerant design of additively manufactured metallic components subjected to cyclic loading: State of the art and challenges

Comparison of Optical and Stylus Methods for Surface Texture Characterisation in Industrial Quality Assurance of Post-Processed Laser Metal Additive Ti-6Al-4V

Characterisation and correlation of areal surface texture with processing parameters and porosity of High Speed Sintered parts

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