Squeak and Rattle Testing

At a glance

Millbrook provides independent squeak and rattle testing for vehicle manufacturers and Tier 1 and 2 suppliers. It tests to customer-specific procedures for development and validation.

Vehicle component vibration testing rigs at Millbrook. Closeup of interior vibration test.
Vehicle component shock and vibration testing laboratory at Millbrook Proving Ground
Vehicle component shock and vibration testing laboratory at Millbrook Proving Ground

Component and subsystem squeak and rattle testing is an accelerated environmental durability test that uses temperature, humidity and vibration. Squeak and rattle testing simulates the expected in service conditions of a product to ensure the quality, durability and robustness.

Actuation and cycling of subsystems (such as armrests, glove boxes and cup holders) can be assessed during squeak and rattle testing. Millbrook’s team has significant experience in designing and developing systems to representatively actuate these systems throughout temperature and vibration profiles. Squeak and rattle testing can be further enhanced by the inclusion of infra-red solar loading of components, powering of electrical systems and circulation of conditioned air through HVAC elements during testing.

Millbrook can accurately replicate axis road load data on several shakers depending on the component mass and vibration severity. Its hydraulic shaker system can offer dynamic force of up to 62kN and frequencies of up to 100Hz. Its electromagnetic shakers offer dynamic force of up to 32kN and frequencies of up to 2,250Hz. All of these shakers are installed within environmental chambers, allowing a temperature range of between -40°C and +100°C and humidity of up to 98%RH. Testing can be monitored and conducted 24 hours a day 7 days a week to ensure a timely finish of projects and test programs.  

Throughout temperature and vibration schedules, subjective and objective inspections of test components are conducted. This is to assess component performance, including craftsmanship gap and flush, measurement of subsystem operating efforts and squeak and rattle testing using various vibration test profiles.

Millbrook has supported various OEMs in conducting squeak and rattle testing for a wide range of products deployed in a variety of markets. Millbrook’s engineers use this experience to assist customers in developing and defining appropriate squeak and rattle test procedures.

Millbrook frequently runs development programs for customers where squeak and rattle testing is complemented by key life testing.