Laser vibrometers are non-contact devices that use laser technology to measure vibrations on the surface of components, ensuring that parts meet the stringent quality, performance standards and specifications of the OEM.  By detecting quality issues before a part leaves the manufacturing facility, laser vibrometers help to detect any deviation from specifications.  This helps to mitigate scrap rates, warranty claims, litigation, and the risk of losing key contracts because of quality issues.

The automotive industry demands stringent quality control, and components like engines, gears, exhaust systems, brake systems, and electronic modules must meet exacting criteria. Laser vibrometers provide a powerful and reliable tool to detect even minute inconsistencies in vibration patterns that may indicate defects, misalignments, or structural weaknesses in these parts.

Bumper-to-Bumper Automotive IQC Testing

Applications in Powertrain Components

One of the critical areas where laser vibrometers are extensively used is in testing powertrain components. These include the engine, transmission, and other parts. Excessive vibrations in these components can lead to premature wear, increased noise, or even failure. By using laser vibrometers, suppliers can conduct non-invasive tests to ensure that these parts vibrate within the acceptable range, identifying potential problems before they become significant issues during vehicle operation.

For example, during the manufacturing of engine components like crankshafts or camshafts, any small imbalance can cause significant vibration, affecting the engine’s efficiency and longevity. Laser vibrometers allow for precise measurements to detect these imbalances and ensure that the parts meet the required specifications for smooth operation.

Use in Noise, Vibration, and Harshness Testing

Laser vibrometers are also crucial in Noise, Vibration, and Harshness (NVH) testing, which is critical for ensuring passenger comfort and vehicle quality. Automotive manufacturers expect suppliers to deliver components that contribute to a positive ownership experience. By measuring the vibration characteristics of parts like suspension systems, exhaust systems, and body panels, suppliers can optimize their designs to minimize unwanted noise or vibration when installed in a vehicle.

Testing of Electronic Components

Vehicles are increasingly reliant on electronic systems for functions such as infotainment, navigation, and advanced driver-assistance systems (ADAS). These electronic components must also undergo rigorous testing to ensure they function correctly under various operating conditions, including exposure to vibrations during vehicle operation. Laser vibrometers allow suppliers to assess how electronic components behave under different vibrational stresses, ensuring their durability and reliability over the vehicle’s lifetime.

Advantages Over Traditional Methods

Traditional vibration testing methods often involve contact sensors like accelerometers, which require physical attachment to the part being tested. This contact can sometimes affect the vibration characteristics of the part or be impractical for small, lightweight, or delicate components. Laser vibrometers, on the other hand, offer a non-contact solution, providing highly accurate and repeatable measurements without affecting the part. They are particularly useful for testing moving parts or parts that operate under extreme conditions, where physical sensors may fail or introduce errors.

What are Laser Vibrometers and How are They Used?

Precision & Reliability of Laser Vibrometers

The precision, efficiency, and non-destructive nature of laser vibrometers make them ideal for testing auto components during various stages of production. In the automotive industry, where precision and reliability are paramount, laser vibrometers have proven to be a valuable tool for suppliers conducting quality parts testing. Their non-invasive nature, high accuracy, and ability to detect minute vibrational changes make them indispensable for ensuring that automotive components meet the highest quality standards. By integrating laser vibrometers into their testing protocols, suppliers can enhance product performance, minimize defects, and contribute to the overall safety and satisfaction of consumers.

Learn More
Want to learn more? Contact us at Signalysis to discuss your quality issues or testing needs.