Stable aluminum foam casting process

Technology to replace autoclave operation

The Composite Materials Center of Delaware State University in the United States and Akudan Systems Co., Ltd. cooperated with the aim of replacing the expensive autoclave technology with traditional technology to manufacture large-scale composite structures while still maintaining the quality of the materials. The research was carried out in accordance with the Phase II project contract of NASA's Small Batch Process Transfer Program, and the content was to further develop the automatic strip arrangement process for large aerospace structures.

In the second phase of the project, the composite materials center will develop second-generation equipment through process models and simulations for manufacturing composite structures for aerospace. The purpose of the research is to clarify some details of the internal changes of the material when laying the sandwich structure.

Printed electronic circuit without soldering

Aerospace OEM of Optomec, USA has received a one-year funding of 300,000 US dollars for research on aerospace and military printed electronic circuits that do not require soldering. The goal of this "free soldering technology" is to demonstrate how to manufacture functional circuits. Avoid welding. Aerospace OEM is responsible for designing a variety of test circuits, including double T-groove filter circuits and inverter circuits, which are printed by Optomec’s aerosol jet. All components of the test circuit, including resistors, capacitors, transistors and interconnecting lines, are printed. These circuits will demonstrate that the equipment can accurately print and deposit a variety of conductors, semiconductors, resistors and dielectric materials. Product performance and economic indicators show its low-cost potential.

This process can generate concentrated micro-droplet-like "ink" in a narrow nozzle, and then focus it on the circuit board or substrate in a rice shape. Use CAD/CAM technology to print the droplet stream on a specific part. This process does not require printing screens, omissions and welding procedures.

Conductive composite additives can improve the performance of lithium-ion batteries. The United States cheap tube company has developed a new conductive nanotube composite material that can be used to increase the compaction density of lithium-ion battery electrodes and extend the electrode life. The compaction density can be increased by 10%, and the battery electrode life can be increased by an order of magnitude.

The nanocomposite additives are composed of carbon nanotubes (CNT) and granular electrode conductive additives. This additive has