Test & Measurement

Portable Kit Recovers Traces of Chemical Evidence

This measurement kit can recover trace chemicals such as environmental pollutants, and forensic evidence such as arson fire debris.

An arson investigation typically requires collecting one or two liters of ashes and debris from various locations within a fire scene in metal cans similar to those used for paint, and sending the material to a lab. The testing methods typically include gas and liquid chromatography or various versions of spectroscopy, with gas chromatography being the most widely used in fire debris analysis. When the fire debris is received at the testing facility, samples are taken for testing. Sometimes this will involve suspending a strip with activated charcoal in the air or “headspace” directly above the sample in the metal can for a period of time that can vary, depending on the judgment of the analyst, for 2-3 hours or up to 16 hours.

Posted in: Briefs, Test & Measurement, Spectroscopy, Spectroscopy, Particulate matter (PM), Fire fighting, Test equipment and instrumentation
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Overspeed Protection for Turbine Flowmeters in Cryogenic Applications

Flowmeters for cryogenic applications often fail in service. Turbine flowmeters in particular fail due to very high speeds encountered during chill-down operations. Very cold, very high-velocity gas causes the turbine to spin uncontrollably, which quickly degrades bearings. Those flowmeters that do not fail are often unreliable, degrading their effectiveness as instrumentation to monitor and control cryogenic propellant loading.

Posted in: Briefs, Test & Measurement, Gases, Magnetic materials, Bearings, Gas turbines
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Handheld Device with Reagents for Detection and Diagnostics

The high risk associated with biological threat agents determines that any suspicious sample be handled under strict surety and safety controls, and processed under high-level containment in specialized laboratories. These specialized facilities are complex, very expensive to operate, and need to be staffed by personnel from an extremely limited pool of experts. In addition, safe means of transporting samples suspected of containing highly virulent agents to specialized high-level containment laboratories for analysis is also expensive, requiring, in many countries, the custody of armed personnel. It can be estimated that several million dollars are spent annually worldwide to secure and safely transport an increasing stream of suspicious biological samples that are collected in theaters of war, as well as in domestic environments.

Posted in: Briefs, Test & Measurement, Chemicals, Materials identification, Biohazards, Test equipment and instrumentation
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Thermal Micro-Extraction Laboratory

Typical extractions in the laboratory require a significant amount of sample material, large-scale equipment, and hands-on participation of a scientist. Such a setup is impractical (or impossible), heavy, and expensive to be carried out on spaceflight instrumentation. While great strides are being made to improve spaceflight instrumentation, the front-end sampling and extraction steps are often neglected. Only a few examples discuss the development of extraction systems for spaceflight, and they are immature in development. Additionally, several other microfluidic methods in development at GSFC will eventually require front-end sampling and extraction instrumentation.

Posted in: Briefs, Test & Measurement, Aircraft instruments, Avionics, Aircraft instruments, Avionics, Systems engineering, Test equipment and instrumentation, Spacecraft
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Container Screening Device (CSD)

The CSD detects anomalies, contraband, and hidden compartments in liquid-filled containers, and discriminates between threat and non-threat materials.

The Container Screening Device (CSD) is a portable, benchtop measurement system for real-time sealed-container inspection, and content (liquid/ material) classification and discrimination. The technology uses sound waves to acoustically detect, classify, and discriminate threat versus non-threat substances and materials such as liquid explosives, hazardous and flammable liquids, and other caustic or dangerous liquids at security checkpoints. The CSD originally was designed as a prototype for both field measurements and bench-top applications for liquid forensics, intelligence, and law enforcement scenarios.

Posted in: Briefs, Test & Measurement, Security systems, Security systems, Containers, Acoustics, Acoustics, Hazardous materials, Inspections, Test equipment and instrumentation
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Guide to Electrical Safety Testing

Our safety testing guide is the definitive resource for test operators, engineers and managers looking to learn more about electrical safety testing. Use this guide to help create a safe testing station, learn about the benefits of electrical safety testing your products, and understand the different tests and their applications. This is the ideal place to start if you’re unfamiliar with any aspect of electrical safety testing.

Posted in: White Papers, Test & Measurement
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Simulation, Development, and Field Measurement Validation of an Isolation System for a New Electronics Cabinet in the Space Shuttle Launch Environment Within the Mobile Launch Platform

Selecting the proper vibration isolation system is crucial for aerospace engineers. Without it, a structure can be seriously compromised – or worse, destroyed.

Posted in: White Papers, Aerospace, Test & Measurement
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Flexibility in Low-Cost Microphone Array Systems

As more and more production items are required to comply with a variety of environmental standards, noise control is increasingly key to successful market placement. Effective control of testing costs is equally as critical as deployment of the systems themselves. The ADLINK's fully modular solution provides flexible configuration based on actual demand, while substantially reducing implementation costs, for highly efficient and precise measurement with minimal investment.

Posted in: White Papers, Test & Measurement
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Connecting the Unconnected: Evolving Manufacturing Connectivity, Part I - Challenges to Brownfield Development

Learn about common obstacles encountered on the road to connected manufacturing, and preview some solutions provided by ADLINK and Intel. Cisco estimates that 92% of the 64 million manufacturing machines in worldwide operation are unconnected to any network, despite remaining in full use on production lines everywhere. To prevent considerable costs being incurred, viable optimization of existing machines embodies connection to the Internet, effectively integrating them into Smart Factory systems while maximizing acquisition and analysis of operational data, all within acceptable cost constraints.

Posted in: White Papers, Manufacturing & Prototyping, Test & Measurement
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Decoupled Ranging and Orientation Inversions Enable Linear and Fast Long-Range Non-Line-of-Sight Positioning

New linear solutions are significantly simpler than the previous complex nonlinear solutions.

The wireless radio positioning or radiolocation problem is of great importance in society today. Existing radiolocation systems such as the Global Positioning System (GPS), Radio-Frequency Identification (RFID) systems, and Ultra Wide-Band (UWB) systems use propagating EM waves and show reduced accuracy in non-line-of-sight (NLoS) environments due to propagation losses, delays, or multi-path effects. These significantly limit their use in radiolocation applications where the line of sight to the device is blocked. Examples of these are many, and include radiolocation for a device inside a cave or building, embedded underground or in a tunnel or mine, and for underwater applications, which covers a multitude of space, military, and civilian applications. In addition to these severe limitations, existing radiolocation systems using propagating EM waves enable ranging and positioning, but cannot provide precision two-dimensional (2D) or three-dimensional (3D) orientation sensing, which is critical in many applications where the sensor's attitude is important.

Posted in: Briefs, Test & Measurement, Global positioning systems, Global positioning systems (GPS), Radio equipment, Sensors and actuators, Global positioning systems, Global positioning systems (GPS), Radio equipment, Sensors and actuators
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