SAMPE Journal - November/December 2021 - 29
Objective
The first objective is the analysis of the dominant
influencing parameters (test series 1) as well as
the determination of first operating points for a
successful fibre integration (Figure 3 left). For the
analysis of the influencing parameters, a simplified
test setup is used, which simulates the process
zone during fibre integration. After the first starting
points have been found, the fibres are integrated
into the part. The findings obtained from this
test setup are then transferred to the developed
laser sintering system (test series 2). Using simple
parts and tensile specimens, the first mechanical
properties will be determined and the potential of
the new technology will be demonstrated.
EXPERIMENTAL SETUPS
In a first test series, a simplified test setup is used
to analyse the prevailing influencing variables and
to determine a first operating point. This test setup
enables a quick analysis, i.e. without heating phase,
sintering process, powder application and cooling
phase. The aim of the first test series is to limit
the parameter space of the influencing variables
and thus to quickly determine a first operating
point. Another aim of the first test series is the
integration of continuous fibres in prefabricated
samples on basis of the operating point found. In
a second test series, the findings from the first test
series will be transferred and adapted to the real
sintering process (test series 2). For this purpose,
a complete laser sintering system with automated
continuous fibre integration was developed. This
approach allows more influencing parameters to
be investigated than with a commercial system
and thus a deep understanding of the process can
be built up. The test series are explained in the
following points.
Test Series 1: Analysis of the Influencing
Parameters
Test Setup 1
The test setup in Figure 4 consists of a process
chamber, thermally insulated on each side, a
specimen lying on the heated platform and an
extrusion unit of the Titan-Aero type from E3D,
which can be moved parallel to the platform /
specimen and adjusted in height. The various
nozzles were mounted on the extrusion unit.
The process area was heated by a heating mat
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Matec Instrument Companies, Inc. | Northborough, MA | 1-508-393-0155 | sales@matec.com | matec.com
www. sampe.org
NOVEMBER/DECEMBER 2021
|
SAMPE JOURNAL | 29
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SAMPE Journal - November/December 2021
Table of Contents for the Digital Edition of SAMPE Journal - November/December 2021
SAMPE Journal - November/December 2021 - Cover1
SAMPE Journal - November/December 2021 - Cover2
SAMPE Journal - November/December 2021 - 1
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SAMPE Journal - November/December 2021 - Cover3
SAMPE Journal - November/December 2021 - Cover4
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