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VSM schematic VSM setup. A vibrating-sample magnetometer (VSM) (also referred to as a Foner magnetometer) is a scientific instrument that measures magnetic properties based on Faraday’s Law of Induction.
A vibrometer is generally a two beam laser interferometer that measures the frequency (or phase) difference between an internal reference beam and a test beam. The most common type of laser in an LDV is the helium–neon laser, although laser diodes, fiber lasers, and Nd:YAG lasers are also used.
Biothesiometry is a noninvasive medical test used to quantify the perception of vibration by measuring its threshold. [1] It is used in neurology and electrophysiology to diagnose a number of conditions, like diabetic neuropathy and erectile dysfunction , where the vibration perception threshold (VPT) would be higher than average.
In contrast to contact measuring methods, the test object is unaffected by the vibration measuring process. Vibrometry covers a huge range of applications such as the study of microstructures moving only a few pm at frequencies up to 2.5 GHz, all the way up to the intense dynamics occurring in Formula 1 engines with vibration velocities ...
The natural frequency of this flexural vibration mode is characteristic for the dynamic Young's modulus. To minimize the damping of the test-piece, it has to be supported at the nodes where the vibration amplitude is zero. The test-piece is mechanically excited at one of the anti-nodes to cause maximum vibration. Test-piece vibrating in the ...
A shaker is a device used in vibration testing to excite the structure, either for endurance testing or modal testing. Sample layout of a modal testing system.
Dongling Vibration (Chinese: 东菱振动; pinyin: Dōnglíng Zhèndòng) is a top-level vibration test equipment manufacture company. [ 1 ] [ 2 ] [ 3 ] Founded in 1995 in Suzhou , P.R China , it has over 250 employees, most of whom work in its headquarters in Suzhou , P.R. China, which is called Dongling Science and Technology Park.
In 2002, Fluke purchased DNI Nevada (formerly Dynatech Nevada/Neurodyne-Dempsey), a Carson City, Nevada based manufacturer of medical test equipment, [4] best known for being the original makers of the FitTester 3000 quantitative respirator fit test machine. [5]