Recently added articles from Sound and Vibration:
S&V News
Feb 01, 2009; ... Call for Papers The 80th Shock and Vibration Symposium will be held at the Paradise Point Resort and Spa in San Diego, CA, October 25-29. The Shock & Vibration Symposium is the oldest U.S. Government sponsored forum dealing specifically with the shock and vibratory response of air, ...
Metal Strain Gages Remain Key Despite Initial Rejection
Feb 01, 2009; ... Bonded metal foil strain gages are a mature technology. Their importance is routinely encountered in our daily lives every time that a weighing process occurs. In addition, in experimental mechanics applications, such as flight qualification of a new aircraft design, approximately one-third of ...
Random Testing to New Limits
Feb 01, 2009; ... Today's random vibration controllers all facilitate applying limits to the controlled acceleration's power spectral density. Now, alarm and abort limits have been added to the g/volt H-inverse frequency response function at the heart of the control loop and to measured g/g test-object ...
Guarded Hope for 2009
Jan 01, 2009; ... I have frequently been asked by Sound SVibration to write the editorial for the January issue. I recognize that this is not due to my great prognostic skills, but that this issue will be in print for the International Modal Analysis Conference (IMAC), where I have been very involved since the ...
Modern Solutions for Ground Vibration Testing of Large Aircraft
Jan 01, 2009; ... Ground vibration testing (GVT) of aircraft is typically performed very late in the development process. The main purpose of the test is to obtain experimental vibration data of the whole aircraft structure for validating and improving its structural dynamic models. Among other things, these ...
Engine Contribution Analysis Using a Noise and Vibration Simulator
Jan 01, 2009; ... We investigated a pure time-domain version of source-path-contribution analysis using a controllable source, a noise and vibration simulator installed into a trimmed vehicle. We examined both airborne and structure-borne inputs, and used the matrix method in the time-domain to calculate source ...
PRODUCT LITERATURE
Jan 01, 2009; ... Solid-State Data Recorder The RION DA-40 is a compact, eightchannel digital data recorder that provides users a high-quality instrument to record various types of electronic signals and waveform data for sound and vibration on-site measurement. With line input and constant-current line ...
S&V News
Jan 01, 2009; ... IMAC-XXVIl Focuses on Model Verification & Validation Model Verification and Validation is the theme for IMAC-XXVII, focusing on techniques used to assess the accuracy of numerical predictions and quantify the degrees of uncertainty and confidence with which predictions are made ....
Can You Hear Me? - Making the World a Quieter Place
Dec 01, 2008; ... This is a story of achievement on a grand scale, of the fulfillment of a lifelong vision by the creation of an innovative and widely respected company adapting and manufacturing noise control products to meet the needs of new and challenging industries. From a childhood in near poverty and, as a ...
Propagation Modeling Parameters for Wind Power Projects
Dec 01, 2008; ... Noise modeling of wind turbines can be problematic in that they generate sound over a large area, from a high elevation, and make the most noise in very high wind conditions. For ISO 9613, these factors directly relate to how ground attenuation and meteorology are accounted for. To study ...
Engineering and Administrative Noise Controls for the Mining Industry
Dec 01, 2008; ... The U.S. Mine Safety and Health Administration's (MSHA) health standard for occupational noise exposure (30 CFR Part 62), became effective on September 13, 2000. An important feature of this revised noise standard is the emphasis it places on implementing and using feasible engineering and ...
Riding the Waves - A Life in Sound, Science and Industry
Dec 01, 2008; ... Eric W. Wood, Acentech Incorporated, Cambridge', Massachusetts Leo Beranek's mother offered him this advice when he was young - advice he followed and still remembers: "Leo, study hard, get ready for college, and make a decent life for yourself." Twenty-one years later he earned the ...
Ultrasonic Testing Techniques for Bridge Inspections
Dec 01, 2008; ... MISTRAS Group, Inc. has teamed up with the Ohio Department of Transportation (ODOT) in an effort to improve state and local bridges in Ohio. Selected steel bridges throughout the state will have critical gusset plate condition testing done with the Pocket UT(TM), the world's first hand-held, ...
S & V News
Dec 01, 2008; ... LDS Acquired Spectris plc, the productivity-enhancing instrumentation and controls company, has signed an agreement to acquire the LDS Test & Measurement business from SPX Corporation. LDS is a manufacturer of integrated vibration test and measurement equipment and software for ...
S&V News
Nov 01, 2008; ... Call for Papers The 16th International Congress on Sound and Vibration will be held in Krakow, Poland, July 5-9, 2009. Abstracts (300 words maximum) can now be submitted directly to www.icsvl6.org. This is expected to be one of the largest congresses in the world in the fields of ...
Sometimes Something Wonderful Happens
Nov 01, 2008; ... While the most destructive concept on the planet may very well be that of government, even our ponderous federal bureaucracy occasionally does something quite right. This happened on October 1, 1958, when the National Aeronautics and Space Administration (NASA) was inaugurated. For 50 years, ...
Modal Analysis of Goodrich Landing Gear for the A380
Nov 01, 2008; ... LMS Engineering Services performed a modal test campaign on Goodrich landing gear for the Airbus A380. In the "Super Rig" at Goodrich Corporation's landing-gear facility in Oakville, Ontario, Canada, LMS engineering consultants subjected a body landing gear prototype assembly for the Airbus A380 ...
Ralph Hillquist - 1937-2008
Nov 01, 2008; ... Wednesday, July 23, 2008, rang down the final curtain upon a long-standing love affair and the life of one of this industry's strongest and most charismatic players. Ralph Hillquist drew his last breath and quietly left us. His wife of forty-four years, Sharon, was by his side as she has been ...
Model Validation of a Complex Aerospace Structure
Nov 01, 2008; ... A series of modal tests were performed to validate a finiteelement model of a complex aerospace structure. Data were measured using various excitation methods to extract clean modes and damping values for a lightly damped system. Model validation was performed for one subassembly as well as for ...
Using Photo Modeling to Obtain the Modes of a Structure
Nov 01, 2008; ... Photo modeling technology has progressed to the point where a dimensionally accurate 3D model can be economically constructed from a series of digital photographs of a structure. We show in this article how a photo model of a structure can be used to create an FEA model from which the modes of ...