Sensors & Test

Test & Measurement

Learn what's trending in test, measurement, and monitoring technologies. Explore the latest products, applications, and technical briefs covering advanced measuring instruments, monitoring systems, devices, and instrumentation.

Testing in rugged applications often includes testing in extreme temperature ranges, which can add constraints to hardware. Cold-start engine testing, for example, uses a test...

Texas Tech University scientists have brought the wind power industry one step closer to its potential with the creation of a system to measure wind flow and control...

A research team from Adelphi University in New developed a new device that can detect ultra-low concentrations of gases like nitrogen dioxide accurately and nearly...

Researchers have developed an integrated, wearable system that monitors a user’s environment, heart rate, and other physical attributes with the goal of predicting and preventing...

Briefs: Test & Measurement
Hermetic Seal Leak Detection Apparatus with Variable Size Test Chamber

NASA’s Marshall Space Flight Center has developed a unique apparatus ideal for use in nondestructive testing (NDT) of hermetic seals of containers or instrumentation. The device is capable of detecting both large and small leaks and can be calibrated to characterize the...

NASA’s Langley Research Center has developed a system to detect and locate atmospheric clear air turbulence (CAT) by means of a ground-based infrasonic array to serve as an early warning...

Briefs: Test & Measurement
Low-Temperature Radiometer

Many present and future NASA missions require high-performance, large-scale cryogenic systems, such as the sunshields and cold instruments for the James Webb Space Telescope (JWST). Testing these systems is...

The suspension system of parachutes is typically made from ropes (referred to as cordage). Measuring loads in the suspension system cordage has thus far proven very...

Briefs: Test & Measurement
Improved Method to Quantify Leak Rates

One existing method to quantify the gas loss from a closed system is the mass point leak rate method. This traditional empirical method is capable of quantifying the loss of a known type of gas from a...

Briefs: Test & Measurement
Flight Test System for Accurately Predicting Flutter

Traditional methods of flight flutter testing analyze system parameters such as damping levels that vary with flight conditions to monitor aircraft stability. In the past, the actual flight envelope developed for aircraft operation was essentially determined only by flight testing. The edges...

Briefs: Test & Measurement
TestEVAL Software to Assist in Mechanical Testing

Typically, mechanical test data has been reviewed and processed using a combination of Excel, PDF Viewer, MATLAB, and other tools. TestEVAL provides a central tool for all these tools, and enhances their capability. Having been developed in Python, it is expendable and portable. It uses no...

Briefs: Test & Measurement
Technique to Measure Degradation of Submillimeter-Wave Spectrometer Response to Local Oscillator Phase Noise

High-resolution submillimeter-wave spectroscopy is based on the heterodyne principle, where the incident signal is down-converted to a low intermediate frequency (IF) by nonlinear mixing with a local oscillator (LO) signal. The IF...

INSIDER: Test & Measurement
Researchers Test Galaxy-Seeking Robots

A telescope project from the Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) will use a planned array of 5,000 galaxy-seeking robots to produce a 3D map of the universe. Dubbed ProtoDESI, the scaled-down, 10-robot system will help scientists achieve the pinpoint accuracy needed...

INSIDER Product: Test & Measurement
SLED-Based Broadband Near-Infrared Source

Avo Photonics (Horsham, PA) design, development, and manufacturing, was commissioned by Luxmux Technology Corporation, to develop and manufacture a solid-state, broadband, continuous emitter for use...

Briefs: Test & Measurement
Laser Architecture and Atomic Filter for Daytime Measurements Using Spaceborne Sodium Lidar

A satellite-borne sodium lidar will provide key measurements that elucidate the complex relation between the chemistry and dynamics of the Earth’s mesosphere, and thus provide a thorough understanding of the composition and dynamics of this region. The...

Briefs: Test & Measurement
Rangefinder for Measuring Volume of Cryogenic or Caustic Turbulent Fluids

Specific impulse (ISP), or simply impulse (change in momentum) per unit amount of propellant consumed, is a measure of rocket and jet engine efficiency. The amount of propellant, or in the case of engine testing at the Stennis Space Center (SSC), cryogen consumed during...

Briefs: Test & Measurement
Micro-Force Sensing Nanoprobe

The NGXO (Next Generation X-Ray Optics) project has several problems relating to how to bond a very thin glass mirror to a metallic structure without distortion. One problem is that all epoxies shrink (at the micron level) when they cure. This shrinkage distorts the optical quality of the mirror unacceptably....

Briefs: Test & Measurement
High-Channel-Count, High-Scan-Rate Data Acquisition System for the NASA Langley Transonic Dynamics Tunnel

The NASA Langley Research Center (LaRC) Transonic Dynamics Tunnel (TDT) has been operational since 1960, investigating a wide range of aeroelastic and non-aeroelastic phenomena. A dedicated aeroelastic test facility, the TDT is a large,...

Briefs: Test & Measurement
Fusible Alloy Thermometer

This work was based on the need for a relatively small passive detector of maximum temperature reached by an object that can be visually inspected. The device requirements are to be hermetically sealed for contamination control, give a clear indication of maximum temperature achieved (non-reversible) with a ~10 °C...

Briefs: Test & Measurement
Small-Volume Pressurized Sample Handling System

A method was developed for effective, efficient, non-destructive, in-situ sample processing. Pressure vessels are used for sample delivery and collection, a shaker is used to keep the particles suspended, a back pressure of argon gas is used to keep the system under pressure to regulate the flow,...

INSIDER: Test & Measurement
NASA Tests 3D-Printed Rocket Fuel Pump

NASA tested a 3D printed rocket engine turbopump with liquid methane – an ideal propellant for engines needed to power many types of spacecraft for NASA’s journey to Mars. During the full-power...

Researchers have created flexible silicone sensors that make it easier to steplessly control devices such as a multifunction steering wheel that lets the driver control music,...

INSIDER: Test & Measurement
Beach Buoys Detect Water Contamination

Beachgoers may soon be able to know in a timely manner if the water is clean enough for swimming. The technology comes in the form of buoys that are deployed in the water near a beach. By combining...

INSIDER: Sensors/Data Acquisition
Sensors Teach Dogs New Tricks

A team from North Carolina State University has developed and customized a suite of technologies that allows a computer to train a dog autonomously. Sensors in the custom harness monitor a dog’s posture, and...

INSIDER: Manufacturing & Prototyping
Light-Powered 3D Printer Creates Terahertz Lens

Researchers from Northwestern University used a light-powered 3D printer to create a terahertz lens. The imaging component is made from a novel metamaterial that exhibits properties not readily...

Many machines such as turbines, oil drills, health monitors, and nuclear reactors require internal sensors to monitor physical states such as temperature. Researchers are...

A low-energy nuclear reaction imaging technique designed to detect the presence of weapons-grade uranium and plutonium in cargo containers arriving at U.S. ports was...

Briefs: Mechanical & Fluid Systems
Micro Cylindrical Ion Trap Micro Mass Spectrometer Instrument System

The goal of this work was to advance the development of new, extremely small (≈2 cm3), low-power (≈3 W), and low-cost micro mass spectrometer instrument systems (μMSIS) through the application of microelectro-mechanical system (MEMS) design and fabrication, and...

INSIDER: Test & Measurement
NASA Measures Raindrop Sizes from Space

For the first time, scientists have three-dimensional snapshots of raindrops and snowflakes around the world, thanks to the joint NASA and Japan Aerospace Exploration Agency Global Precipitation...

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