New Aerospace Testing Products

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Shock-pulse tester

Unholtz-Dickie has developed the Model S092-MX Shaker for shock-pulse testing. Half-sine shock pulses up to 1200 g for 0.5 ms duration can be produced for small payloads. Testing applications include computer disk drives, optical sensors and transmitters, sensors, laser communication equipment, detonators, and other hardware items that must operate in extreme environments.

Integrated piezoelectric accelerometer

Columbia Research Laboratories, Inc.'s Model 8205 piezoelectric accelerometer is designed for the measurement of high frequency, medium-to-high-level shock and vibration. The sensor, which weighs 42 g, incorporates a hybrid electronic assembly within a rugged, stainless-steel body. The integral electronics provide low impedance output capable of driving up to 500 ft of shielded cable. The accelerometer has a nominal sensitivity of 500 mV/g ±5% and a frequency response of 2 Hz to 6 kHz.

RF wideband test station

Shason Instruments' Power Amplifier Automated Reliability Test Sets from Space Electronics, Inc. are capable of performing three temperature life tests on discrete transistors, monolithic microwave integrated circuits, hybrid microwave integrated circuits, and radio frequency (RF)/microwave module assemblies. The test system consists of hardware and software, which initiates, supervises, and records temperature, electrical, and RF performance parameters automatically throughout the test run. The test station is operated through a proprietary system software with a Windows-based graphical user interface. Program functions include test setup, monitoring, data presentation, supervision, and networking. The test station can support testing of various modulation signals such as CDMA, inter-modulation characterization testing, and multi-tone RF input signals and can be equipped with a semiconductor parametric analyzer for full I-V characterization.

Microtorsion and impact testers

Instron Corp. has developed a series of microtorsion testers and a new impact test machine. The 55MT MicroTorsion Series, offered in 20 N•m and 220 N•m designs, can be used to simulate a variety of applications in which torsional stresses are prevalent. The testers feature a rigid, tabletop-mounted load frame designed with a small footprint requiring minimal lab space. The units are equipped with an adjustable crosshead that allows for easy specimen loading. A torque cell protection device is used to prevent damage to the cell during fixture installation and test setup. High torsional stiffness and minimal axial friction is accomplished with the units' unique dual linear slide design. The 55MTs are designed to test specimens that require only a few degrees of rotation or multiple turns in one or both directions. The testers use Merlin software, a fully integrated software package designed with torsion testing templates.

The company's Dynatup 9250 tests impact properties of polymers, metals, composites, and full components. The unit offers complete computer control and impact velocities up to 22 m/s for applications such as quality control and research and development. Unlike most other units, the tester captures the entire impact event by plotting and analyzing data to determine important values such as the ductile-to-brittle transition point, ductility, incipient damage, maximum load, and absorbed energy. In addition, the Dynatup 9250 uses the Impulse software and electronics package, which is designed for impact testing applications.

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