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NVH test and measurement

NVH (Noise, Vibration, and Harshness) measurement techniques are primarily used in the automotive, aerospace, and other manufacturing industries to evaluate and analyze noise, vibrations, and product comfort. These tests provide essential insights into performance, allowing for an understanding of how noise and vibrations impact safety, comfort, and user experience. Crucial for ensuring that products meet high-quality standards, NVH measurements are an integral part of the design and production process across various industries.

Key Components

NOISE

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Noise refers to unwanted or undesirable sounds that can originate from various sources, such as engines, air intake, exhaust, tires, and wind.

VIBRATION

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Vibration is the oscillation or shaking that can occur in mechanical components and systems, potentially causing discomfort, fatigue, or even damage over time. Vibration testing focuses on identifying and analyzing the frequencies and amplitudes of vibrations that could impact features and/or performance.

HARSHNESS

Hexagon icon with headphones inside

Comfort refers to the subjective perception of a product's overall quality, particularly based on how vibrations and noise affect the user experience. For example, in vehicles, comfort can influence ride quality and overall satisfaction.

Benefits

Improved product quality

By identifying and mitigating excessive noise and vibrations, manufacturers can improve the overall quality and user experience of their products.

Enhanced comfort and safety

In vehicles, reducing unwanted noise and vibrations improves cabin comfort and reduces driver fatigue.

Cost Efficiency

Early detection of NVH issues during the design and development stages can optimize product development, avoiding the need for costly post-production modifications.

Compliance with regulations

Many industries have strict regulations on acoustic emissions, and NVH testing helps companies comply with these standards.

Common Techniques and Transducers

Reference Products

Display of software interface with graphs and data visualizations for analytical measurements and calculations

NVA - Noise Vibration Anaylzer

The reference tool for studying dynamic signals.

Noise vibration analysis software interface with multiple graph views and data charts.

NVT - Noise Vibration Tester

Multi-Purpose Measurement Software for Acoustic and Vibration Phenomenon Analysis

Windows software screens showing vibration analysis graphs and spectrograms with data inputs and controls, labeled Wintek NVT.

NVT-HMS - Health Monitoring System

Integrated System for Vibration and Dynamic Parameter Monitoring

Applications

Automated industrial assembly line in a factory setting

Ensure that machinery and equipment operate smoothly without excessive noise or vibrations that could cause mechanical failures or discomfort to the operator.

Classic car interior with wooden steering wheel and steering wheel lock

Ensure that vehicles meet customer expectations in terms of comfort and noise control. This includes testing drivetrain components, road noise, and vibrations from suspension and structural systems.

Close-up of a microphone component on a circuit board, labeled 'MIC'

Evaluation of noise and vibrations in common devices such as computers, washing machines, power tools, and audio reproduction systems.

Airplane in flight with landing gear down, viewed from below, against a cloudy sky.

Essential methods for aircraft, as they help ensure comfort and safety by minimizing noise from both the propulsion components and vibrations during flight.