Manufacturing & Prototyping

Design Tips For Using Coatings

When designing parts for coatings, there are some things you’ll want to take into account. Even the most impeccably designed parts sometimes face problems during the coating process. By following a few basic design tips, you can avoid potential issues down the road. Read our white paper to learn more.

Posted in: White Papers, Coatings & Adhesives

Read More >>

Method for Fabricating Metallic Panels with Deep Stiffener Sections

This method is a rapid, more environmentally friendly, cost-effective process. Langley Research Center, Hampton, Virginia This innovation integrates existing highperformance metallic materials and manufacturing technologies (all of which are now certified and used to produce thinner stiffened panels for launch vehicle structures) in a novel manner to allow fabrication of more structurally efficient panels with stiffeners that are substantially deeper than existing plate stock materials.

Posted in: Briefs

Read More >>

Robust, High-Temperature Containment Cartridges for Microgravity

Other potential applications include chemical processing, heat pipes, power generation equipment, nuclear components, and automotive. Marshall Space Flight Center, Alabama Robust, high-temperature containment cartridges are needed for processing materials science experiments in microgravity. In general, the refractory metals (Nb, Ta, Mo, W, Re) possess the chemical inertness and high melting temperatures desired. Of these materials, niobium and tantalum alloys have been the materials of choice due to their low ductile to brittle transition temperatures, which allow deep-draw forming into cylindrical shapes. The high cost of tantalum and niobium, along with the desire for cartridges resistant to molten zinc and usable to 1,500 °C, demonstrates the need for alternative cartridge materials. Two candidate materials are molybdenum and tungsten alloys. Both have high melting temperatures and cost an order of magnitude less than tantalum and niobium.

Posted in: Briefs

Read More >>

Method for Insertion of Carbon Fiber Through the Thickness of Dense Dry Fiber Preform

Heat shields for re-entry vehicles, and jet engine exhaust components are two potential applications. Ames Research Center, Moffett Field, California Creation of a structural joint for a heat shield for extreme entry environments requires structural fibers penetrating through the thickness of the shield at joint locations. The structural fibers must be made of carbon to withstand extremely high temperatures, i.e. 2000 ºC. Carbon fibers, due to their relatively high modulus (stiffness), are easily damaged and broken when handled by a conventional sewing machine. Special coatings such as nylon are required to increase the durability of the fiber to enable its use in a sewing or tufting process.

Posted in: Briefs

Read More >>

Precision Detector Conductance Definition via Ballistic Thermal Transport

This innovation could be applied in the development of bolometric detector array sensors. Goddard Space Flight Center, Greenbelt, Maryland The characteristics of a thermal detector, such as sensitivity, response time, and saturation power (or energy resolution), are functions of the thermal conductance of the detector to its cryogenic environment. The thermal conductance is specified to achieve a tradeoff among the highest sensitivity, allowed response time, and the desired saturation energy or power budget for the particular application. It is essential to achieve the design thermal conductance (within an acceptable variance) after a thermal detector has been fabricated. Otherwise, the detector will fail to achieve its desired functionality. In addition, the formation of a multi-pixel imaging array becomes difficult and costly when the design thermal conductance is not achieved with high post-fabrication yield.

Posted in: Briefs, TSP, Sensors

Read More >>

Scientists Print in 4D

Scientists at the Wyss Institute for Biologically Inspired Engineering at Harvard University and the Harvard John A. Paulson School of Engineering and Applied Sciences have brought a fourth dimension to their microscale 3D printing technology.

Posted in: News

Read More >>

Getting The Most Out Of Metal 3D Printing: Understanding Design & Process Controls For DMLS

Metal 3D printing is the ideal alternative to complex designs that machining or casting can’t achieve. It offers the mechanical properties of aerospace standard materials and the design freedom of 3D printing. In this white paper, learn:

Posted in: White Papers

Read More >>