Asymmetry in the atmosphere of the ultra-hot Jupiter WASP-76 b
Design and Manufacture of Energy Absorbing Materials
1. LLNL-PRES-654659
This work was performed under the auspices of the
U.S. Department of Energy by Lawrence Livermore
National Laboratory under contract DE-AC52-07NA27344.
Lawrence Livermore National Security, LLC
Eric Duoss, Engineer
2. Defense/Aerospace Sporting/Consumer Goods Packaging/Transportation
Dampen shock and vibrations
Distribute and relieve stress
Maintain relative positioning
Mitigate the effect of size variation
Lawrence Livermore National Laboratory LLNL-PRES-654659 2
3. 1. Difficult to control mechanical properties
2.Exhibit non-uniform properties
3. Little control over directional properties
4.Difficult to develop predictive models
Lawrence Livermore National Laboratory LLNL-PRES-654659 3
4. Additive Manufacturing enables the ability to pattern cellular materials
with controlled, complex architectures. We use a 3D printing process called
“Direct Ink Writing” to produce ordered, cellular elastomers.
1. Enable better control of mechanical properties
2. Exhibit more uniform properties
3. Enable better control over directional properties
4. Enable a predictive modeling capability
Lawrence Livermore National Laboratory LLNL-PRES-654659 4
6. “Face centered tetragonal” (FCT)
Uniaxial compression
“Simple cubic” (SC)
Pre-compression + shear
Lawrence Livermore National Laboratory LLNL-PRES-654659 6
7. • Same base elastomer material
• Same volume fraction (or
degree of porosity) = ~50%
• Different printed architecture
Lawrence Livermore National Laboratory LLNL-PRES-654659 7
20. • Same base elastomer material
• Same volume fraction (or
degree of porosity) = ~50%
• Different printed architecture
Lawrence Livermore National Laboratory LLNL-PRES-654659 20
21. FCT structure pre-compressed (25%) and sheared (dynamic strain sweep)
Lawrence Livermore National Laboratory LLNL-PRES-654659
22. SC structure pre-compressed (25%) and sheared (dynamic strain sweep)
Lawrence Livermore National Laboratory LLNL-PRES-654659 22
25. Existing prototype—patent applications filed
Currently being scaled up for production
Ready for commercialization
New designs possible to achieve new performance
for new market applications
Lawrence Livermore National Laboratory LLNL-PRES-654659
25
Scaling it up now for internal proprietary opportunities. Cannot discuss these in detail. How much in what amount a time for R&D. Go into production, then what? High value added applications. Football helmets. Delicate instruments. Human apps.