Sound Solutions that Resonate

QRDc Spin-off Company Recognized in Cleantech Open Competition

Thursday, 30 June, 2011

SheerWind, Inc., a QRDc spin-off company commercializing energy-related technologies, has been recognized in the Cleantech Open competition for its INVELOX wind power generation technology. SheerWind is one of only six semifinalists in the North Central Region competing under the Renewable Energy category.

June 17, 2011

Cleantech Open Announces North-Central Region Semi-Finalist Companies Midwest clean and green entrepreneurs participate in a regional program and move on to compete for over $1 million in prizes and national acclaim

MINNEAPOLIS–(BUSINESS WIRE)–The North-Central region of Cleantech Open ( has named the top 20 start-up companies to represent the region in the world’s largest cleantech business competition and entrepreneur incubator. These semifinalist teams were selected from a talented pool of cleantech entrepreneurs from more than 10 Midwest states.

The 20 semifinalists will now compete for regional prizes including cash and in-kind services. The top companies advance to represent the region and compete at the national level for a grand prize of up to $250,000 in investment and services, and an opportunity to present in front of 2,000 attendees at The Cleantech Open’s Global Forum in November 2011.

Over the next few months, semifinalists will receive advice from the national network of Cleantech Open expert mentors, an opportunity to participate in entrepreneurial “boot camp” academies in Silicon Valley and Boston, and will have access to investors from across the country. This unique platform helps each start-up accelerate the commercialization of technologies and offers important opportunities for raising the capital necessary for scaling a business.

“We are exceptionally proud that the North-Central region is showcasing an excellent group of entrepreneurs again this year. These start-ups are working to solve some of today’s most significant environmental and energy challenges through innovation,” said Justin Kaster, regional director of the Cleantech Open and an investment banker with Cherry Tree Companies, LLC. “Our local leadership team is excited to see how this year’s incubator builds upon the inaugural 2010 program, which led to several of our alumni companies landing customers and funding.”

The semifinalists for the 2011 North-Central Cleantech Open may be viewed on the Cleantech SemiFinalists site.

Cleantech Open Sponsors Support
The Cleantech Open is made possible by the generous support provided by our Global Partner, Chevron; Global Foundation Partner, Ewing Marion Kauffman Foundation; National Sponsors, Autodesk and Wells Fargo; and National Premier Sponsor, University of Phoenix. The North-Central program is also supported by the following corporate partners: Deloitte, Jones Lang La Salle, Faegre & Benson, Padilla Speer Beardsley, and HER Communications.

About The Cleantech Open
The Cleantech Open runs the world’s largest cleantech business competition and entrepreneur incubator. Its mission is to find, fund and foster entrepreneurs with big ideas that address today’s most urgent energy, environmental and economic challenges. A 501(c)(3) not-for-profit organization, the Cleantech Open provides the infrastructure, expertise and strategic relationships that turn clever ideas into successful global cleantech companies. Since 2006, through its one-of-a-kind annual business and mentorship program, the Cleantech Open has enabled hundreds of clean-technology start-ups to bring their breakthrough ideas to fruition and helped alumni contestants raise over $300M. Fueled by a global network of more than 1,000 volunteers, partners and sponsors, the Cleantech Open unites the public and private sectors in a shared vision for making America’s cleantech sector a thriving economic engine in the future. For more information, visit


QRDc spins off a new company: SheerWind, Inc.

Wednesday, 16 March, 2011

SheerWind will commercialize the wind power generation technology initially developed by the QRDC team.  With the President’s goal of generating 80% of the nation’s electricity from clean energy by 2035, the country is in dire need of a leap-frog technology that can competitively extract energy from our green resources such as wind, solar, and geothermal.  QRDC has developed and patented one such approach that reduce the cost of generating electricity from wind to below the current cost of the country’s least expensive conventional approaches.  Additional advantages of this technology over the conventional wind turbine approach will include:

  • Less environmental impact, particularly on wildlife and farm animals
  • Elimination of “Wind Turbine Syndrome”, a serious health concern to humans caused by the low-frequency pressure oscillations produced by conventional turbines
  • Decreased maintenance cost by more than 50%
  • Near zero down-time

The spun-off company, SheerWind, was officially launched in January 2011.

QRDc deliveres training seminar at John Deere, WI

Wednesday, 16 March, 2011

Three team members made a visit to John Deere’s facility in Horicon, Wisconsin, on February 10, 2011.  During the one-day visit, CEO Daryoush Allaei spent the entire morning presenting the basics of noise and vibration to a classroom of over 30 John Deere employees.  Participants were engineers for the most part, though a shorter session was also held for members of John Deere’s management team.  Content focused on the basics of translating a real-life system into a coupled mass-spring-damper model that can then be analyzed to identify potential solutions to problems with equipment.  Scattered throughout the lectures were multiple live demonstrations of basic vibration and acoustic phenomena, including a visualization of plate mode shapes and vibrating beams that loosen and tighten bolts and nuts all by themselves.

 Participant feedback indicated that those in attendance found the material very helpful and well presented.  For questions pertaining to a personal training visit to your facility, contact us via email or call at 952-556-5205.

Medical devices company selects QRDc noise reduction

Wednesday, 16 March, 2011

Yet another medical devices company has decided to fund a two-phase project with QRDc, in order to solve some noise issues it is having with its enteral feeding pump.  These devices are meant to operate in hospitals around the country, and must do so in a peaceful, quiet manner.  The first phase of this project, which was recently completed by QRDc, was to develop an initial characterization of the problem.  This being complete, the second phase is now to identify what this designer and manufacturer can do to lower the offending noise levels without having too large of an impact on manufacturing and redesign costs.  The targeted noise level goal is 33 dBA … a reduction of roughly 20 decibels!

QRDc launched its new web site on July 19, 2010.

Wednesday, 23 June, 2010

The QRDc web site has a new look with an expanded focus on our exciting new technology areas. Browse through our site and offer your feedback!

QRDc holds a round table on noise in medical facilities in September 2010.

Wednesday, 23 June, 2010

Round Table: Influence of Noise and Vibration in the Healthcare Facilities

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QRDc developed a non-rotating wind power generation.

Wednesday, 23 June, 2010

QRDc has developed a non-rotating wind power generation system that has minimum maintenance cost. It has no bearing, no lubrication, no shaft, no rotating element.


Significantly improved long-term reliability of wind turbines has become critical as they increase their penetration into the national and international electrical power base. The major subsystems in wind turbine systems include blades, gearboxes, generators, power transferring shafts, bearings, and towers. Advanced acoustic and vibration modelling techniques and monitoring systems have been employed to effectively predict and monitor the health of wind turbines. The goal is, in addition to having system capability for determining structural condition, to reduce unscheduled outages, and to predict maintenance cycles in order to avoid failures. By better understanding the root causes of noise and vibration, one could significantly boost performance, maintainability, and reliability while reducing downtime and catastrophic failures of wind turbines that are becoming crucial to meeting the global renewable energy goals.

The main root causes of wind turbine noise, wear, damage, and failure is excessive vibration. In particular, excess noise has become a growing problem for farmers and those living near wind farms. In this paper, the top six of the most important causes of rotating machines and turbines failures due to excess noise/vibration are discussed. Such root causes are blade mistuning, misalignment, imbalance, resonance, fastener looseness, and bearing damages and defects. Three of these root causes have been responsible for over 80% of excess vibration and noise, and machinery wear, failure, and downtime. Wind turbine-generator systems are no exception and follow the same failure modes.

We approached the wind farm noise in manner similar to our work in the mining and processing industry. In the latter case we replaced the root causes of excess noise in vibratory machines (i.e., 200 lbs eccentric electrical motors) with 1 lb PZT-based actuators that practically make no noise. Using the same methodology, we have managed to fully mitigate the excess vibration and noise from the conventional wind farms by eliminating the root causes of vibrations, namely turbine blades, gearboxes, generators, power transferring shafts, bearings at the top of towers.

Speaker Invitation to the 2010 Spring Reliability Training.

Wednesday, 23 June, 2010

The Director of R&D at QRDc, Dr. Allaei, was an invited speaker in the 2010 Spring Reliability Training held in Minneapolis in February 2010.

The Vibration Institute, an organization for the dissemination of practical information on evaluating machinery behavior and condition 2010 Spring Reliability Training.


The speakers for the Vibration Institute have played an important role in the development and application of plant reliability technology and have the ability to communicate their knowledge to others. Our speakers draw their extensive industrial experience for case histories and examples to illustrate current best practices.

Dr. Daryoush Allaei - has over 25 years of research and development and business experience. Dr. Allaei has provided the technical innovation and business leadership through fifteen years of funded research and development that led to several technological and product breakthroughs. Since 1992, Dr. Allaei has founded and co-founded six companies. He currently serves as the Chairman and Director of R&D of QRDc, Inc. in Minnesota, USA.
Dr. Allaei received his Ph.D., MSME and BSME degrees from Purdue University in the field of mechanics with his doctoral emphasis on Systems and Structural Dynamics. His technical expertise is in dynamics systems with emphasis on vibration and noise control. He was a professor or adjunct professor at the University of Mississippi, Mankato State University, and Iowa State University. His engineering and scientific accomplishments in this field include over 85 national and international publications, numerous speaker invitations at conferences and workshops, Chair or Vice Chair positions at several conference sessions, fifteen (15) USA patents and nine (9) internationals patents, and over 10 technology awards and grants
totaling about $8,000,000 from the U.S. government. He was the recipient of The Technology of the Year Award in 2000, The Smart Structures & Materials Product Implementation Award in 2002, Tibbetts Award in 2002, and R&D-100 in 2004. Dr. Allaei is a member of the ASME, AIAA, SME and SAE. Dr. Allaei is a registered Professional Engineer and Certified Manufacturing Engineer.

QRDc Breaks New Ground!

Monday, 2 November, 2009

QRDc has delved into new areas of Energy Efficiency and Renewable Energy. Take a look at the Technology areas under our Government R&D section on our web site. Please contact QRDc if you are interested in learning more about these technologies.

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Is the Noise Bringing You Down?

Monday, 2 November, 2009

Noise affects many aspects of our lives. Often time this noise becomes an unbearable problem needing a solution. If you are looking for help in diagnosing, documenting, or solving noise related problems. Check out The QRDc Noise Monitoring Kit available in the Products section of our Consumer Services pages.