Manufacturing & Prototyping

Method for Decreasing Additive Manufacturing Build Times Using Arrays of Multiple Deposition Heads

3D printing several parts simultaneously enables increased speed for mass production. NASA’s Jet Propulsion Laboratory, Pasadena, California Additive manufacturing (AM, also informally known as 3D printing) is a relatively new process for fabricating net- shaped parts from a computer-generated drawing. The inherent problem with using AM in mass production is the slow build times for each part. Because parts must be built layer by layer, the build time cannot be dramatically increased. The build time is limited by the physical melting and consolidation of plastic or metal, which cannot be dramatically speeded up, and the velocity of the build head, which is limited by the mechanical motion mechanism. One solution to the inherently slow build times is to replicate the building head, while replicating as few of the other machine components as possible. Utilizing this technique, the fabrication time per part can be reduced by the number of simultaneous building heads, which may make the AM process suitable for some mass production.

Posted in: Briefs

Read More >>

Electropolishing in Pneumatics and Hydraulics

This single-process finishing method can be employed for virtually any metal alloy. Able Electropolishing, Chicago, Illinois Manufacturing reliable, high-performing parts and components that have extended lifecycles is crucial for the pneumatics and hydraulics industry. From springs to fittings, the performance of each these manufactured parts and components is essential to the operation of machinery used in a variety of disciplines in the pneumatics and hydraulics industry. When reliability, functionality, performance, and life of metal parts are paramount, electropolishing is a single-process metal finishing method that effectively meets the challenges.

Posted in: Briefs

Read More >>

Reusable Integrated Instrument Control and Computing Platform

This reusable hardware/software platform has applications in embedded systems and digital signal processing applications in small spacecraft, airborne avionics, and instrument electronics. NASA’s Jet Propulsion Laboratory, Pasadena, California ISAAC (Instrument Shared Artifact for Computing) offers adaptability, computation power, I/O bandwidth, digital interface standards, and data processing capability in a single, common, low-mass/power, and small-form-factor platform with significantly reduced, nonrecurring cost and risk to Earth Science instruments such as SMAP/HYDROS and other NASA/JPL planetary exploration instruments with diverse requirements. This platform has six key components:

Posted in: Briefs, TSP

Read More >>

Design and Engineering of Process Plants Based on the “Lego Principle”

Users can add automation modules or switch them off in line with requirements. Festo Corporation, Hauppauge, New York Manufacturers in the process industries need to adjust to smaller batches and different types of product in the same plant. Plants based on the “Lego principle” are designed and engineered precisely to the respective task, whether for the production of a specific product in units per time unit, or for the throughput of a specific substance in a quantity per time unit. The mechanical design of the plant as a whole is geared towards meeting specifications and guaranteeing the required performance data over the projected lifecycle of the plant. The corresponding automation is carried out using management systems comprising process-specific (control) components, operating and monitoring stations, as well as engineering stations. The entire process is centrally controlled by a single management system.

Posted in: Briefs, Industrial Controls & Automation

Read More >>

Electrochemically Enhanced Mechanical Polishing of Optics

A combined method results in a significant reduction of manufacturing time for optical components. Marshall Space Flight Center, Alabama Optical component fabrication using metals or ceramic materials involves many grinding and/or machining and polishing steps to achieve the proper form to the tolerances of imaging or photonic focusing instruments. These instruments range from infrared sensors, through visible and ultraviolet, to X-ray and even thermal neutron focusing. Conventional manufacturing methods require many days or even months of precise polishing to improve selected areas of the component.

Posted in: Briefs

Read More >>

Expendable Cooling System for Venus Lander Concept

The concept could be applicable to the trucking industry to provide temporary cooling where power is not readily available. NASA’s Jet Propulsion Laboratory, Pasadena, California This innovation is a concept for a novel thermal architecture that would enable a day-long surface mission on Venus. A Venus lander mission could last much longer than a few hours on the surface of the planet by absorbing heat from the Venus environment, and from the electronics within the lander, by using an expendable fluid cooling system. The fluid would evaporate in the structural shell, absorbing heat coming from the ambient environment, keeping the shell relatively cool compared to the ambient temperature. The evaporating fluid would create a liquid flow from a reservoir used to cool electronic components within the lander. The liquid reservoir must be contained within the lander structure to serve as a heat sink to maximize the lander lifetime on the surface. A pressure tank would be used to bring the fluid to a point where it could boil and vent into the Venus atmosphere.

Posted in: Briefs, TSP

Read More >>

Rapid Quench Furnace for Processing Powder in an Inert Environment

The system is able to process particles and/or powder, preserving inert environmental conditions throughout. Langley Research Center, Hampton, Virginia Ongoing work in the development and characterization of sensory materials requires the development of shape memory alloy (SMA) powder or particles. These are embedded in structural material so that the progression of localized damage that occurs during fatigue crack growth will produce an audible acoustic emission (AE) as the SMA transforms from an austenite phase to a martensite phase. In order to set the shape memory effect in these particles, the SMA must be solution-treated (ST) to produce the austenite phase, and rapidly quenched to or below room temperature to preserve the austenite phase at room temperature.

Posted in: Briefs, TSP

Read More >>