Test & Measurement

Power Monitoring

Microchip Technology (Chandler, AZ) introduced the MCP39F511 single-phase power monitoring IC designed for real-time measurement of AC power. It is designed for use in high-performance commercial and industrial products such as lighting and heating systems, smart plugs, power meters, and AC/DC power supplies. To address industry requirements for better accuracy across current loads, additional power calculations, and event monitoring of various power conditions, the IC provides popular standard power calculations combined with advanced features. The import and export of active energy accumulation, four-quadrant reactive energy accumulation, zero-crossing detection, and dedicated PWM output have been integrated on-chip, along with the ability to measure active, reactive, and apparent power; RMS current and RMS voltage; line frequency; and power factor.

Posted in: Products, Manufacturing & Prototyping, Test & Measurement



PCB® Automotive Sensors Division (Depew, NY) offers MEMS DC response accelerometers for improving the precision of low-frequency vibration and motion in automotive applications. Available in full-scale ranges from ±2g to ±200g, the accelerometers come in single-axis (Series 3711E and Series 3741E) and triaxial (Series 3713E) configurations. The units include gas-damped, silicon MEMS sensing elements. Series 3711E and Series 3713E have a hermetically sealed titanium case, and Series 3741E units have a rugged anodized aluminum housing for harsh environments.

Posted in: Products, Manufacturing & Prototyping, Test & Measurement


NASA Tests Asteroid Sampling Instrument

The first of five instruments for a spacecraft that will collect a sample from an asteroid and bring it back to Earth has arrived at Lockheed Martin for installation onto NASA’s Origins Spectral Interpretation Resource Identification Security-Regolith Explorer (OSIRIS-REx). The Thermal Emission Spectrometer (OTES) will conduct surveys to map mineral and chemical abundances and to take the asteroid Bennu’s temperature.Bolted to a cradle, the OSIRIS-REx TES is prepared for testing. A red lens cover nestles within the angular sunshade, keeping the optics clean. (ASU/Charles Leight)

Posted in: News, Aerospace, Instrumentation


Quantitative Analysis of Failure Mode in Adhesively Bonded Test Specimens

A fluorescence visualization technique is used. Langley Research Center, Hampton, Virginia After adhesively bonded mechanical test specimens have been tested to failure, the failure mode must be interpreted and quantified. Areas of the adherent that are bare (no residual adhesive remains) have undergone adhesive failure. The remainder of the surface has undergone cohesive failure. The ability to distinguish and accurately quantify the relative amounts of cohesive and adhesive failure on a failed bonding surface is of tremendous importance in the field of mechanical testing, and for the development of bonded assemblies. Some adhesives (and adherents) are fluorescent, meaning they re-emit light at a different wavelength after being irradiated by some lighting source. This property allows for quantitative analysis of the adhesive failure mode (adhesive and cohesive). A digital image of the fluorescing adhesive or adherent can be analyzed and quantified using publicly available software to determine the relative areas of exposed and covered adherent surface.

Posted in: Briefs, TSP, Test & Measurement, Failure modes and effects analysis, Optics, Adhesives and sealants


Energy-Based Acoustic Measurement System for Rocket Noise

Marshall Space Flight Center, Alabama Development of the next generation of spaceflight vehicles has prompted a renewed focus on sound source characterization and near-field propagation modeling. Without advancements in these areas, large uncertainties in vibro-acoustic loading estimates on space vehicles and payloads may result in structural designs that are either insufficient or excessive.

Posted in: Briefs, Test & Measurement, Noise measurement, Rocket engines


Mass Gauging Demonstrator for Any Gravitational Conditions

Marshall Space Flight Center, Alabama This concept uses an optical interferometric method to determine the density and/or pressure of the gas state contained with tank ullage. The system is similar to compression tank volume methods. By using an optical interferometric technique to determine gas density and/or pressure, a much smaller compression volume or higher-fidelity measurement is possible.

Posted in: Briefs, Test & Measurement, Optics, Gases, Test equipment and instrumentation


Multiport Hat Coupler for Electronically Steerable Antenna Testing

This technology provides the same performance as an anechoic closet, but at two orders of magnitude lower cost. Lyndon B. Johnson Space Center, Houston, Texas This invention provides a lower-cost means for verifying the scanning functionality of an electronically steerable (i.e. phased array) antenna (PAA) compared to existing methods that use a scanning probe or scanning test fixture and surrounding anechoic enclosure. This design is comprised of a standard test hat that has been modified to include additional probes located in the positive and negative directions of each scan axis. RF measurements taken from these additional probes provide an estimate of the beam-pointing angle. This solves the problem of verifying the platform-installed antenna’s beam-pointing functionality without the relatively high cost of a conventional anechoic chamber with a scanning probe or scanning test fixture.

Posted in: Briefs, Test & Measurement, Electronic steering control, Antennas


The U.S. Government does not endorse any commercial product, process, or activity identified on this web site.