Laboratory Electrodynamic Vibration Shaker For Automotive Parts With Shock Isolation Device Meet MIL-STD, DIN, ISO, ASTM Standard

Laboratory Electrodynamic Vibration Shaker for Automotive Parts Meet MIL-STD, DIN, ISO, ASTM Standard

Features:

• Rugged suspension system and linear motion guiding, strong carrying capacity, good guiding functions, high stability
• Load center airbag has high static stiffness and low dynamic stiffness, strong carrying capacity, perfect performance on amplitude variation
• High efficiency D class power switching, 3-sigma peak current, provide finest power consumption and minimize harmonic distortion
• Quick self-diagnosis with safety interlock, high safety reliability
• Airbag shock isolation device for vibration platform without the need of additional foundation, perfect reproduction of vibrational wave and reduce vibration transmittance
• Provide horizontal and vertical expansion platform for different application
• Simple controller operation

Specifications: EV203-EV220

Applicable Standards: MIL-STD, DIN, ISO, ASTM, IEC, ISTA, GB, GJB, JIS, BS etc.

Applicable Industries:

Automotive parts and systems – qualification testing
Electronic assembly, computer equipment testing
Avionics and military hardware testing
Satellite component testing
Product and package testing
General stress screening

Performance of Dynamic Shaker

The maximum acceleration level of an electromagnetic shaker is determined by the maximum current and the loading condition. At low frequency, displacement of moving part is limited such that the acceleration will not reach high level. The resonance frequency of the moving element is designed to be higher than the upper limit of the frequency range of the shaker.

Selection of Shaker Model

To choose a suitable vibration test system, the most important thing is to know the exciting force required to perform the vibration test. To evaluate and calculate the exciting force, the following data should be specified:

• Frequency (frequency range)
• Maximum Acceleration
• Maximum Displacement
• Maximum Velocity
• Specimen Mass and Fixation

The specimen fixation is selected based on the upper limit of test frequency and specimen size, either vertical expansion platform or horizontal slip table. Specimen mass is needed to evaluate the required exciting force for vibration test.

Service

Pre-Sales Service

1)Technical consultation: test method, laboratory planning and suggestion.
2)Equipment selection: selection scheme, FAQ.
3)Product testing scheme.
4)Customer communication and progress report.

After-Sales Service

1)Technical training: operation of equipment, daily maintenance, common fault diagnosis and troubleshooting.
2)Scheduled on-site service: Detection of problem as soon as possible in order to eliminate equipment and anthropogenic hazards. This is to ensure long term and stable equipment operation as well as delivery of latest technical information.
3)Technical support: special paid services are provided according to customer’s needs.

FAQ:

How do you attach the hardware you’re testing to your shaker?

By means of a fixture, usually aluminum or magnesium for lightness coupled with rigidity. They can be cast, or smaller fixtures machined from solid stock. Most fixtures are welded.

How do you control shakers?

If we’re looking for resonances in the product we’re testing, we command the shaker to shake the product at one frequency at a time but to vary that test frequency, to sweep it over a range of frequencies.But more realistically, we command the shaker to vibrate randomly and to excite all the resonances simultaneously.Control commands go into the keyboard of a specially-programmed computer.

What are those resonances?Are they bad?

Have you ever noticed the steering wheel moving with rather large displacement amplitude, larger than the input to the column? That magnification is called resonance. Possibly it annoys you. There’s a slight chance that in a few years that whipping of the steering column might cause bending fatigue failure.When we shake an automotive or ship or land vehicle instrument, we're looking for, for example, portions of printed wiring boards (PWBs) responding with greater motion than we're inputting. That flexing may damage PWB wiring, it may damage the attached components, and it will damage the soldered connections between components and the PWB.

Workshop: