Project examples - Quality

Materials: Ti and Al alloys

Development of powder specifications for Laser Beam Melting

Development of a quality control strategy for ABM powders

Examination of applicability of new in-line powder testing methods
(i.e.: Revolution Powder Analyser)

Project:

ALM2Air (BMWi LuFo V.2, 20W1501F)

Publication:

Zibelius, Daniela: Vergleich von Analyseansätzen zur Bestimmung der Fließeigenschaften metallischer Pulver für die additive Fertigung von Medizinprodukten. Masterarbeit, Fachbereich 1, Studiengang Medizintechnik, Hochschule Bremerhaven (FH), 2016

Uhlirsch, Markus: Charakterisierung von Aluminium-Legierungspulver für Pulverbett-basierte Additive Manufacturing Prozesse. Bachelorarbeit, Studiengang Oberflächen- und Werkstofftechnik, Hochschule Aalen, 2016

Contact:

Fraunhofer IFAM, Claus Aumund-Kopp, claus.aumund-kopp@ifam.fraunhofer.de

In the case of laser beam melting, metallic components from powder material are generated by layered construction and a selective powder melting by means of a laser. Due to the processing of metallic powder materials, however, there are also hazards in the production environment, which are to be classified with regard to compliance with applicable regulations in the area of ​​occupational health and safety.

The application of additive manufacturing processes creates new challenges in the process of factory planning to the companies. These requirements result from the required process components and the materials used for the individual production processes. From the resultant instructions for work safety, practical guidelines have been derived for factory planning regarding handling, storage, constructional conditions and processing of the materials.

Project:

SafetyAM

Publication:

VDI guideline in progress

Contact:

Dr.-Ing. Georg Schlick, georg.schlick@igcv.fraunhofer.de, +49 821 90678-179

The material and component behavior of additively manufactured materials is investigated. In particular, the strain rate dependent behavior is analyzed in dynamic experiments and simulations.

The objective is the development of material charts and simulation models able to forecast material behavior, as well as an enhanced understanding of correlations of process parameters and post-treatment of materials.

Dynamic experiments at testing machines and impact tests at accelerator facilities are conducted.

Dynamic experiments with bionically optimized components are conducted at a component crash system.

A scientific material analysis by means of microscopic investigations of metallographic specimens; CT and SEM investigations in the material laboratory support the modeling.

§An evaluation concept expected to allow reliable statements concerning the behavior of additively manufactured components in service is developed.

The results shall be used for the development of application-specific design rules.

Contact:

Prof. Werner Riedel, werner.riedel@emi.fraunhofer.de, +49 761 2714 515