Loren Data's SAM Daily™

fbodaily.com
Home Today's SAM Search Archives Numbered Notes CBD Archives Subscribe
SAMDAILY.US - ISSUE OF APRIL 03, 2024 SAM #8163
SPECIAL NOTICE

99 -- Innovative Sinusoidal Deposition Polymer Additive Manufacturing Technology

Notice Date
4/1/2024 8:20:47 AM
 
Notice Type
Special Notice
 
Contracting Office
ORNL UT-BATTELLE LLC-DOE CONTRACTOR Oak Ridge TN 37831 USA
 
ZIP Code
37831
 
Solicitation Number
2024-04-01-B
 
Response Due
6/1/2024 2:00:00 PM
 
Archive Date
06/02/2024
 
Description
Technology Summary In�additive manufacturing, also called 3D printing or AM, failure of the printed item due to warpage caused by residual stress build-up from deposited layers of material due to thermal expansion and contraction is a big problem. A new ORNL technology uses a different pattern of material deposition, adding sinusoidal waves in addition to the traditional X-Y axis of the bead head, that allows for uniform deposition of extra polymer to the printed part. The technology drastically reduces or eliminates one of the biggest problems in AM, reducing failures and allowing printing of high coefficient of thermal expansion (CTE)�materials that are not printable otherwise.� Description Most additive manufacturing technologies use thermoplastic material systems, which are easy to process and suitable for large-scale manufacturing. But cooling and solidifying of previously deposited layers causes residual stress to build. This build-up arises because of the contraction of deposited beads during cooling, stressing the previous layers, which have already mostly contracted. When using polymers, a new ORNL technology employs a different deposition pattern, adding a sinusoidal pattern in combination of vertical movement of the print head in a Z-direction along with the X-Y linear movement. This allows controlled deposition of extra material to compensate for the contraction. The contraction pulls this extra material down in a Z-direction during cooling instead of creating a stress in the printing direction in the X-Y plane. As it cools, the extra material keeps the layer straight and minimizes or eliminates residual stress buildup, preventing warping. This allows printing of high CTE materials that are not printable otherwise, reduces failure due to warpage, and prevents delamination of the printed part under load.�� Benefits Solves one of the biggest problems in additive manufacturing� Enables printing of high CTE polymeric material systems that are not printable otherwise, both small- and large-scale� Eliminates residual stress buildup� Prevents part performance problems due to delamination under load� Can reduce high carbon footprint, eliminate high-energy fibers such as carbon and glass, and enable use of bio-based fibers. Applications and Industries Additive manufacturing� Mold-making industry for aerospace, marine, building, and automotive uses Contact To learn more about this technology (ID�202205056), email�partnerships@ornl.gov�or call 865-574-1051.�
 
Web Link
SAM.gov Permalink
(https://sam.gov/opp/8a9afb2478c34443ab3c90a2d6de8373/view)
 
Place of Performance
Address: Oak Ridge, MO, USA
Country: USA
 
Record
SN07015279-F 20240403/240401230042 (samdaily.us)
 
Source
SAM.gov Link to This Notice
(may not be valid after Archive Date)

FSG Index  |  This Issue's Index  |  Today's SAM Daily Index Page |
ECGrid: EDI VAN Interconnect ECGridOS: EDI Web Services Interconnect API Government Data Publications CBDDisk Subscribers
 Privacy Policy  Jenny in Wanderland!  © 1994-2024, Loren Data Corp.