28/04/2020

Machine for laser powder bed fusion at BAM

Machine for laser powder bed fusion at BAM

Source: BAM

Additively manufactured components are currently − with a few exceptions − not used in safety-critical areas. The reason for this is the lack of criteria to design, test and qualify additively manufactured components. Existing rules and regulations cannot be easily transferred due to the wide variety of process- related influencing variables, the geometrical degrees of freedom of the products and the complex influence of the material.

BAM’s activities, therefore, focus on the issues at hand: Which material properties and failure-mechanisms are present in additively manufactured components? How can the quality of the components be improved by process engineering and metallurgical measures? How can the quality even of complex geometries be reliably measured and guaranteed during the process?

For this purpose, BAM combines the expertise of various specialist areas in a competence center with the aim of making expertise available for users from research and industry. BAM uses its broad knowledge of materials analysis, non-destructive material testing and the welding-based processing of materials. BAM is also able to additively manufacture test specimens and industry-related components itself in order to take part in comparative and round robin interlaboratory tests, amongst other research activities. For this purpose, facilities are available for the industrial additive manufacturing processes of metallic materials that are currently most important: Laser Powder Bed Fusion (LPBF), Laser Metal Deposition (LMD) and Wire Arc Additive Manufacturing (WAAM).

BAM is, thus, able to gain in-depth knowledge and cross-functional capabilities under one roof. These capabilities range from the characterization of the starting materials through the additive build-up process and process monitoring, to the characterization of samples and components and the determination of mechanical properties, to enable the future use of additive manufactured components in safety-relevant applications.

Fatigue and damage tolerance of metallic am components

Non-destructive materials characterisation

In-situ monitoring

Process and machine development

Influences on the environment