1. Standards and Test Artifacts
What are standards?
Why are standards important?
Test parts and artifacts
Proposed test artifacts for additive manufacturing
Formative assessment in included in slides
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

2. Additive Manufacturing
What are standards?
A standard is an established way of doing something. Standards can result from
company policy
widespread use
regulation
agreement by professional groups
Image sources:
keyboard:
MLA handbook:
ASCE:
ToysRUs:
ADA:
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

3. Why are standards important?
Standards help us communicate, facilitate commerce, and let us know what to expect from products or processes.
Image source:
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

4. Test parts and artifacts
Some standards for manufacturing processes are based on test parts (also called test artifacts) that help to quantify the performance of the process
The Charpy test is a great application of conservation of energy; see wikipedia for a description
Charpy Impact Test Specimen
Image sources:
Charpy specimen:
Charpy test:
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

5. Test artifacts for additive manufacturing
To help standardize additive manufacturing, the National Institute of Standards and Technology is developing a test artifact to evaluate the performance of additive manufacturing processes and equipment.
Image source:
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

6. Proposed NIST artifact
The NIST artifact is intended for additive manufacturing of metal powders, but the .stl file is posted and can be used on any machine.
Test artifact .stl file is availabe at .
Printed on Makerbot Replicator 2
Image source:
left:
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

7. NIST artifact inspection sheet
To quantify the accuracy of the manufacturing process, test artifact dimensions are measured and compared with nominal values.
Test artifact .stl file is availabe at .
Image source:
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing

8. Additive Manufacturing
References
An Introduction to Standards: Why, where and how are they developed? American National Standards Institute. Web. 31 July Moylan, Shawn, et al. “Proposal for a standardized test artifact for additive manufacturing machines and processes.” National Institute of Standards and Technology. Web. 29 July NIST Additive Manufacturing Test Artifact. NIST. Created 23 April Web. 29 July
IISME ETP L. Demsetz Summer 2014
Additive Manufacturing