SAE Update - July 2022 - 10
TECH FOCUS:
ADDiTivE MANUFACTUriNg
AM Forward Program and
SAE AMS-AM standards
metals, such as titanium and
nickel-based superalloys, for
complex parts for new(er)
designs, or in low volumes, as
replacement parts for
maintenance, repair, and
overhaul (MRO). Thus,
applications span non-critical
but essential parts in the interior
(e.g., nylon clips for a wiring
harness) to flight-critical parts in
the engine (e.g., the lowpressure
turbine blades made
from titanium aluminide powder
for the GE LEAP and GENx).
The business case for newer
designs centers on the ability to
print parts that could not be
conventionally manufactured.
Most often the goal is to
lightweight a part. Typically,
additive manufacturing targets
castings due to their complex
geometry, as compared to
forgings or extrusions. For MRO,
the value proposition is creating
parts without tooling that, for
older designs, is often
unavailable.
In either scenario, aerospace
demands extensive empirical
evidence - a requirement not
necessarily shared with other
industries. For this reason,
aerospace parts can easily
exceed 10 times the costs for
10
July 2022
gE Additive electron beam melting process.
similar parts used in automotive, for example. This
can be prohibitive for SMEs that have a concentrated
customer base and highly variable cash flow.
So what does the AM Forward program entail?
According to the Biden Administration, it is a " public
compact " where these OEMs commit to source from
the supply chain and provide more apparent " demand
signals. " On average, OEMs source roughly 70% of
their final artifact from their supply base. In the case
of AM Forward, these OEMs are targeting from 20 to
50% to be sourced from SMEs for AM parts (1).
SAE International's Aerospace Material
Specifications (AMS) for additive manufacturing will
likely play an important role in this process. To date,
the AMS-AM Committee has produced over 30
documents - mostly material and process standards
- that help demystify the AM-build process. For
instance, one of the seminal documents, AMS7003,
identifies 34 key process variables in a typical
powder-bed fusion process, of which 12 require
statistically process controlled (SPC). This level of
transparency helps ensure a controlled, fixed process
required by aerospace.
UPDATE
GE Additive
SAE Update - July 2022
Table of Contents for the Digital Edition of SAE Update - July 2022
SAE Update - July 2022 - Cov1
SAE Update - July 2022 - Cov2
SAE Update - July 2022 - 1
SAE Update - July 2022 - 2
SAE Update - July 2022 - 3
SAE Update - July 2022 - 4
SAE Update - July 2022 - 5
SAE Update - July 2022 - 6
SAE Update - July 2022 - 7
SAE Update - July 2022 - 8
SAE Update - July 2022 - 9
SAE Update - July 2022 - 10
SAE Update - July 2022 - 11
SAE Update - July 2022 - 12
SAE Update - July 2022 - 13
SAE Update - July 2022 - 14
SAE Update - July 2022 - 15
SAE Update - July 2022 - 16
SAE Update - July 2022 - 17
SAE Update - July 2022 - 18
SAE Update - July 2022 - 19
SAE Update - July 2022 - 20
SAE Update - July 2022 - 21
SAE Update - July 2022 - 22
SAE Update - July 2022 - 23
SAE Update - July 2022 - 24
SAE Update - July 2022 - 25
SAE Update - July 2022 - 26
SAE Update - July 2022 - 27
SAE Update - July 2022 - 28
SAE Update - July 2022 - 29
SAE Update - July 2022 - 30
SAE Update - July 2022 - 31
SAE Update - July 2022 - 32
SAE Update - July 2022 - 33
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SAE Update - July 2022 - 35
SAE Update - July 2022 - 36
SAE Update - July 2022 - 37
SAE Update - July 2022 - 38
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