Photo Gallery Information
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S802/ST
Railroad Car Braking System: Locomotive brake components being tested on an Unholtz-Dickie Model S802 shaker slip table assembly to Mil-Std 810. Vibration testing at component levels improves product quality and reduces service/warranty related expenses.
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S202-PB
Motorcycle Component Testing: Vibration testing of multiple motorcycle carburetor clusters on an Unholtz-Dickie S-Series Shaker rated at 2,200 pounds force. Initially, random and sine tests were used to simulate the real world vibration condition. With the addition of UD's TRAC Control Technology, engineers are now able to reproduce the EXACT Vibration vs. Time profile recorded previously on a test track. Using this new technology resulted in reduced qualification testing time and a higher quality end product.
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R24-PB
w/ Head Expander
Large TV on Table Expander: A large screen television undergoes a typical transportation test on an R-Series shaker system. The simulation of the transportation environment has become a critical portion of the testing process and results in increased product reliability and decreased product returns. The testing of large, heavy structures poses new challenges to the test engineer. Many new issues exist which must be thought through carefully prior to selecting the proper shaker system. Special table expander platforms are available from UD to allow for proper support and testing of large structures. Most of the energy present during the transportation of a product on truck, rail, ship and/or plane, is typically below 200 Hz. Typical random vibration amplitudes can reach 3-4 grms. UD electrodynamic shakers and digital control systems are ideal for reproducing this type of environment accurately and efficiently.
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R24-PB
Motorcycle Tank Test: Vibration testing of a motorcycle fuel tank on an Unholtz-Dickie R-Series Shaker rated at 10,000 pounds force. This particular application utilizes UD's TRAC Control Technology to reproduce the EXACT vibration vs. time profile recorded previously on a test track. Test engineers no longer need to rely on simulations or approximations of the real world vibration.
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T2000
Auto Throttle Body Test: Automotive throttle body assemblies mounted on a T2000 Shaker system undergoing a random vibration spectrum from an SAE Vibration specification. UD shaker systems are used extensively by all of the major automobile manufacturers as well as their tier II and tier III suppliers.
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T2000-PB
Jet Aircraft Engine: A massive jet aircraft engine being tested on a T2000 shaker system at a prominent Connecticut aircraft engine manufacturing test lab. Hundreds of sensors are placed at critical locations on the engines external components and monitored for excessive strain/vibration.
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T2000/ST
Smart Bomb: The tail section of a "smart" weapon being tested on an Unholtz-Dickie Induct-A-Ring T2000 shaker. For added restraint of the high CG load on the slip plate, 4HD bearings are used.
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T4000
Aerospace hardware test being performed on a 40,000 lbf T4000 shaker. A large vertical head expander is used to increase the mounting surface area.
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Multiple T2000's
Multiple T2000: Four T2000 shakers combined to test missile container to transportation vibration specification. All four shakers utilize large guided head expanders to allow increased surface area and added lateral restraint.
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T5000 w/ Guided Expander
A 50,000 lbf T5000 Shaker System configured with a 60 x 60 inch guided head expander being used by Thermo King at its R & D Center in Minneapolis, MN. The 7 ft tall, 1,670 pound test article is designed to maintain temperature-controller shipping environments for insulated transport trailers. Thermo King Engineers are running a sine vibration test to excite engine compressor resonances that become visible with the aid of a strobe light.
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T5000 Satellite Test
The T5000 shaker w/ heavy duty pedestal base is used by Ball Aerospace Engineers to test the Cloudsat spacecraft. CloudSat successfully launched on April 28, 2006 on its mission to study the effects of clouds on climate and weather.
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S202 w/ Head Expander
Steering Column Test: An automobile steering assembly is tested on a S202 shaker with guided head expander. The S202 includes a special "Quiet Mode" feature that allows operation while the cooling blower is turned off. This minimizes noise in the area around the shaker, allowing noise measurements to be taken off of the DUT.
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APL T4000
Satellite Test: The STEREO (Solar TErrestrial RElations Observatory) built by the Applied Physics Lab at the John Hopkins University being tested on a T4000 shaker. The spacecraft was launched on August 31, 2006 and on its two year mission will capture the first-ever 3-D views of the sun.
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