Go to GlobalSpec.com Home
Newsletter   FREE GlobalSpec e-Newsletters
Receive the latest news, trends, and technology relevant to your work.
(See Titles)

Scanning an Ultra-light Membrane to Image Acoustic Fields

From Polytec, Inc.
 

 

Researchers at the INSA Laboratory in Villeurbanne (France) are currently developing a new measurement
device to obtain acoustic particle velocity maps from laser measurements. The technology is based on suspending
an ultra-light membrane in the acoustic field under study, and measuring its velocity with a laser
vibrometer. The challenge lies in choosing a suitable material for the membrane and optimizing the experimental
conditions used to maintain it.

Product Announcements
Polytec, Inc. - Laser Vibrometry in Hearing Mechanics and Otology
The human ear is one of the most sophisticated sound and vibration amplification sys­tems. State-of-the-art Laser-Doppler vibrometers reveal the vibrational and dynamic characteristics of hearing... (read more)
Polytec, Inc. - OFV-5000 Modular Vibrometer Controller
Polytec's modular vibrometer controller is continually improving to meet the needs of advanced vibration measurement applications. The latest design adds digital processing with a range of new... (read more)
Polytec, Inc. - IVS-400 Industrial Vibration Sensor
Measuring equipment employed in production environments requires a compact and robust design to be suitable for the challenges met in harsh industrial areas. Polytec's Industrial Vibrometers combine a... (read more)
Polytec, Inc. - VDD Digital Vibrometers
Digital vibrometer systems utilize the latest technologies for digital signal acquisition and processing. They are based on a purely numerical Doppler signal decoding technique, where displacement... (read more)
Polytec, Inc. - Ultrafine Dynamics of MEMS as Revealed by the MSA
Polytec's latest technology is used for cutting edge applications in the field of Micro-Electro-Mechanical Structures (MEMS). Our Micro System Analyzer (MSA-500) combines powerful tools for analysis... (read more)
Polytec, Inc. - OFV-534 Compact Sensor Head
Fitting a sophisticated heterodyne laser interferometer into an extraordinarily small package is only one of many design triumphs that sets the OFV-534 Compact Vibrometer Head apart from its... (read more)
Polytec, Inc. - Ultra High Frequency Vibrometer
Polytec's New UHF-120 Laser Doppler Vibrometer (LDV) characterizes out-of-plane vibrations at unprecedented frequencies as high as 600 MHz. The system retains the advantages and features familiar to... (read more)
Mitsui Pellicle is a dust proof membrane applied to photomask in the lithography process of the semiconductor manufacturing process. (read more)
Polytec, Inc. - VibSoft Software
VibSoft is a comprehensive software and hardware package for acquiring and processing data from Polytec's line of single-point laser vibrometers. It manages the data acquisition, signal decoding,... (read more)
 
Topics of Interest
Non-contact laser Doppler vibrometry is a powerful tool to aid in the study of biomechanics. Recent experiments to determine the dynamic properties of a pelvic bone relied on deflection measurements... (Read More)
The customer needs to do frequency analysis to determine the resonant frequency of an oscillating micro-fabricated device. They will use a Laser Doppler Vibrometer to monitor the physical oscillation. (Read More)
Michel Brunet, Fabrice Morestin and H l ne Walter Laboratoire de M canique des Solides, INSA, Villeurbanne, France 1. Introduction Plastic deformation in anisotropic sheet-metal consists of... (Read More)
What is Optical scanning? Let me offer a definition. Optical scanning is a systematic articulation of light to provide information transfer. Then, what is information? Consider that it means simply... (Read More)
4.8.3 Alternate Acoustooptic Deflection Techniques 4.8.3.1    The Scophony Scanner    Although AO deflection is dominated by the implementations discussed... (Read More)