Test & Measurement

3D Measurement and Visualization of Displacement and Strain Fields

The Naval Research Laboratory (NRL) has developed a metrology workbench for the measurement and visualization of displacement and strain fields in three dimensions. The workbench uses two or more cameras to image a specimen, and includes custom software that implements the 3D Meshless Random Grid method.

Posted in: Briefs, Test & Measurement, Finite element analysis, Computer software and hardware, Optics, Test equipment and instrumentation


Eddy Current Probe for Surface and Sub-Surface Inspection

This technology can be used in aerospace, manufacturing, materials, and energy applications.NASA's Langley Research Center has developed a novel probe for eddy current sensor applications that improves detection depth and measurement resolution. Although the use of anisotropic magnetoresistive (AMR) sensors in eddy current probes to improve sensitivity at low frequencies and increase the detection depth is known, the high-frequency sensitivity and small size of these sensors is less explored. This new probe incorporates two induction sources (i.e., one high-frequency and one low-frequency) and an AMR sensor; the result is improved resolution in near-surface material characterization, combined with simultaneous deep-flaw detection. Addition of a second high-frequency induction source, oriented to produce a magnetic field orthogonal to the first, allows for near-surface anomaly detection in two dimensions.

Posted in: Briefs, Sensors, Measuring Instruments, Test & Measurement, Computational fluid dynamics, Sensors and actuators, Inspections


Understanding Connected Car Testing

As the automotive industry cruises towards Advanced Driver Assistance Systems (ADAS), autonomous vehicles and thus the integration of communications technology, test and measurement becomes a critical component in the journey.

Posted in: White Papers, Automotive, Communications, Wireless, Test & Measurement


Selecting the Right Material for 3D Printing

Materials must be suited to the application in order to have successful results. The properties of any material become increasingly important as a product progresses from concept and functional prototyping to production.

Posted in: White Papers, Electronics, Manufacturing & Prototyping, Test & Measurement


Hydraulic Carts Streamline Structural Tests for Aircraft

The Flight Loads Laboratory (FLL) at Armstrong Flight Research Center tests the strength and endurance of aircraft structures using hydraulic actuators to apply forces that simulate the stresses of takeoff, flight, and landing. The contract to build the FLL’s next-generation hydraulic controller system went to Moog Inc., an East Aurora, NY-based company that specializes in motion control systems. The company designed a multi-function mobile cart that not only houses the hydraulics for up to eight actuators, but also includes most of the necessary electronics, which were previously housed in the control room.

Posted in: News, Aerospace, Test & Measurement


Automotive Radar Sensors - RF Signal Analysis and Inference Tests

This Application Note addresses signal measurements and analysis of automotive radars that are crucial during the development and verification stages. It also shows a setup to verify the functionality of a radar in case of radio interference.

Posted in: White Papers, Automotive, Test & Measurement


Time-to-Digital Converter

Mouser Electronics, Inc., (Mansfield, TX) is now stocking the TDC7201 time-to-digital converter from Texas Instruments (TI). The TDC7201 is designed for use with ultrasonic, laser, and radar range finding equipment using time-of-flight (TOF) technique. TI’s TDC7201 time-to-digital converter has two built-in time-to-digital converters (TDCs) that can be used to measure distance down to 4 cm and up to several kilometers using a simple architecture. The TDC7201 features a wide measurement range of 0.25 ns to 8 ms and high accuracy of 28 ps. The device has a single shot resolution of 55 ps, (equivalent to 0.825 cm).

Posted in: Products, Products, Data Acquisition, Measuring Instruments


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