Vibration Testing

Vibration testing can help ensure that your new design will survive its intended environment. Submitting your product to vibration testing pays for itself by reducing field return costs through improved product reliability.

Our vibration testing facilities are comprised of 15 electrodynamic and hydraulic multi-axis shakers to provide over 67500 N (30,000 lbf) in practically any type of vibration testing event - sine, random, sine on random, and random on random.

Our pyrotechnic shock testing facilities and mechanical shock testing machines (small and medium weight) can be tailored to produce the required shock pulse. Within a secure underground vibration testing facility lies our 12 M (40 ft) centrifuge that accommodates payloads up to 680 kg (1500 lb) and reaches 300 G's.

We can combine several systems to simulate your anticipated vibration testing conditions - mechanical, pneumatic, hydraulic induced vibration testing combined with various atmospheric/climatic conditions.

Classical Shock Testing

Classical Shock Testing is accomplished using many facilities here at DTB. The typical shock testing event can be performed on our Unholtz-Dickie T-4000 and T-2000 vibration testing systems. These Vibration Testing systems coupled with 360KVA of amplifier power permits the system to achieve shock testing levels of over 100Gs.

For tests that required higher levels or longer duration, DTB has additional mechanical shock testing machines. Using these shock testing facilities, levels of 3000 G and 4 mSec, half sine shocks have been developed for our customers. Longer duration shock testing pulses have also been obtained. These long duration pulses range from over 1 second in duration using our Catapult facility to 100 mSec.

Modern engineering techniques often call for unusual and difficult shock testing and vibration testing requirements. However, DTB's staff of highly skilled engineers and technicians have years of experience in setting up and running these types of dynamic tests.

Pyrotechnic Shock Testing

DTB’s Shock Testing group has developed and refined the ringing plate method of producing repeatable Shock Response Spectrums (SRS) to over 32,000 Gs.

This shock testing facility can produce this high level as well as lower level ringing out to 10,000 Hz. The knee of the SRS can be adjusted from 1000Hz to 2000Hz to meet the demands of your pyrotechnic shock testing requirements.

Items as small as an integrated circuit to as large as 3400 kgs. (7,500 lbs.) are subjected to various shock testing methods, such as the shaking profile of a truck on a potholed road, the shock of a torpedo hitting a submarine or the controlled explosions on a spacecraft.

Hammer Shock Testing

Light Hammer Shock Testing

DTB has Medium weight hammer shock as well as light weight hammer shock testing facilities, which are both Navy Certified and approved.

These shock testing facilities are totally capable of performing Mil-S-901 test requirements.

Transportation and Packaging Shock / Vibration Testing

Incline-Impact Test

We are members of ISTA

Standard and Custom Shock / Vibration Testing testing can be run meeting the requirements of ISO TC 104, ISO/PAS 17712:2005(E) and ASTM F1157-04 as well as any other DOT, Association of American Railroads (AAR) or ISTA certified test requirement.

Here at DTB, our complete Container Testing services include:

We can accommodate all containers up to 20 ft. in length, with payloads of up to 6000 lbs. DTB can also design and develop containers for specific Navy applications including any interior isolation systems that may be needed to meet shock and vibration requirements. DTB is able to provide all of the Fixture Design, Fabrication, Testing Facilities and Engineering for the program on site, at our corporate headquarters in Bohemia, NY.

Combined Environments Vibration Testing

We own six facilities, combining temperature/humidity chambers with electro-dynamic vibration testing facilities. The chambers have rapid rates of temperature change and the vibration testing facilities can handle 18,000 force-pound loads with frequencies up to 2000 Hz.

In a single test, we'll mix it any way you like, and include all the advanced data acquisition you want: mechanical, electrical stress, pneumatic, hydraulic combined with vibration testing, temperature, humidity, altitude.

Acceleration Testing

DTB has two centrifuges used for acceleration tests. The largest centrifuge is underground and can impose a maximum of 300 g’s of acceleration on test items and can carry a max payload of 1000 pounds. Centrifuge tests are used to meet acceleration requirements of MIL-STD-810 method 513.5, MIL-STD-202 method 212A, MIL-STD-750 method 2006 and other specifications.

DTB has adjustable fixtures that allow the test item to be tilted and rotated in order to match combined load vector test requirements. Data acquisition on test items during the test or monitoring of the test unit operation during the test is also available.

Acoustic Noise Testing

Acoustic Noise is one of many tests that DTB can accomplish for you. Whether the noise is structure born or airborne, we can handle your requirements.