Gas turbine engines used in power generation and jet engines generate substantial noise from the combustion process, and the interaction of the expanding hot gases and the combustion chamber. Researchers have found that by using fuel injectors that are phased to release fuel at the correct time, the combustion pulses can be used to damp the system.
Read the full story on the ASME web site.
The recent release of a tape recording of Osama bin Laden’s voice has officials questioning the authenticity of the speaker. Signal processing techniques and speech analysts have been employed to determine if the recording is of bin Laden or a skilled impersonator.
Read the story on yahoo.com.
HBM, a manufacturer of strain gauges and equipment, have released a software package called catman, for collecting large numbers of channels of strain gauge data.
Read more on the HBM web site.
Ometron have released a new scanning laser vibrometer, model XVI, that can measure vibration at 16 locations simultaneously, which means it is possible the study of transient and non-repeatable events.
Read more on the Ometron web site.
Ansys have released version 7 of their finite element analysis software. There have been many improvements, including optimization routines, new elements, and my favourite – the ability to export analysis results into Microsoft Excel spreadsheets.
Read more on the ANSYS web site.
Leo Beranek is about to release the second edition of his book, “Concert Halls and Opera Houses: Music, Acoustics, and Architecture”, which is due out on February 15, 2003.
Click here to read a reviews of the 1st and 2nd editions on noiseboard.com.
BRE has developed an aircraft cabin simulator for an Airbus A300, and are developing a similar mock-up for a A380. The simulator is used for testing including noise, vibration, temperature, and humidity on cabin and cockpit crew and passengers.
Read the story on the SAE web site.
Read about the simulator on the BRE web site.
Researchers at MIT have won a grant to investigate the use of hydrophones to detect hurricanes and use the information to determine the wind speed.
Read the story on the MIT web site.
Mazda Motor Corporation selected MTS Systems Corporation and nCode to develop a virtual testing capability for durability, noise, vibration, and harshness.
Read the story on the MTS web site.
A consortium of 51 manufacturers from engine, aircraft, and equipment sectors as well as design and manufacturing firms, research establishments, and universities, are joining to develop technologies that would enable a minimum six-decibel reduction in aircraft noise.
Read the story on the SAE web site.