Feedback

Determination of Influencing Factors on Interface Strength of Additively Manufactured Multi-Material Parts by Material Extrusion

GND
1187754897
Affiliation
Institute for Engineering Design, Technische Universität Braunschweig
Freund, Raphael;
ORCID
0000-0001-8211-6346
Affiliation
Institute for Engineering Design, Technische Universität Braunschweig
Watschke, Hagen;
GND
1187755036
Affiliation
Institute for Engineering Design, Technische Universität Braunschweig
Heubach, Julius;
GND
1139782940
Affiliation
Institute for Engineering Design, Technische Universität Braunschweig
Vietor, Thomas

Material composition complexity offered by material extrusion additive manufacturing offers new opportunities for function-driven part design. Nevertheless, since influencing factors on the interface strength between different materials are not well understood, this complexity is only used infrequently, in part, in design thereby restraining innovation. This paper proposes a systematical approach for identification and quantification of relevant adhesion phenomena that influence interface strength. For this reason, suited test specimen, which utilize the geometric freedom offered by additive manufacturing, are developed for roll peeling tests and peeling resistance of several combinations of rigid and flexible materials is determined. The results show that material choice especially regarding polarity as well as mechanical interlocking in regards to surface roughness and design features have high influence on the interface strength of multi-material parts manufactured by material extrusion. These results are explained through the relevant adhesion mechanisms that determine the interface strength in additively manufactured parts. Finally, criteria that predominantly affect interface strength are deduced and design recommendations for creating functional parts with ill-fitting material combinations are formulated.

Cite

Citation style:
Could not load citation form.

Access Statistic

Total:
Downloads:
Abtractviews:
Last 12 Month:
Downloads:
Abtractviews:

Rights

Use and reproduction:

Export