Author Archives: Robert Farrell

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Determining Objectional Noises: Jury Evaluations

On November 4, 2024, Posted by

Did you like the movie? What’s your favorite color? We live in a subjective world.  So, how can an automotive or appliance manufacturer, for example, know what noise type or decibel is unacceptable to the customer? One method for determining objectionable noise is through a jury evaluation. Jury evaluations allow…

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Objectionable Noise and the Automotive Industry

On October 22, 2024, Posted by

Objectionable noise, often referred to as “noise, vibration, and harshness” (NVH), is a central theme in product quality. The term encompasses unwanted sounds that a product produces during operation. In the case of an automobile, for example, these noises might include a rattling window, a clicking car seat motor, or…

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How Laser Vibrometers Use the Doppler Effect

On September 16, 2024, Posted by

In this blog, we’ll cover laser vibrometers and how they employ the Doppler Effect. These devices are commonly known as Laser Doppler Vibrometers. Applications of Laser Doppler Vibrometer include testing manufactured parts to detect anomalies, flaws, and other nonconformance to specifications. What Is the Doppler Effect? Light reflected from a…

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Laser Vibrometers in Automotive Component Testing

On September 12, 2024, Posted by

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…

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What are Laser Vibrometers and How are They Used?

On September 6, 2024, Posted by

Laser vibrometers are versatile instruments used for non-contact vibration measurement designed to measure velocity, displacement, and acceleration of vibrating surfaces with high precision. There are several types of laser vibrometers, each designed for specific applications. Single-Point Laser Vibrometer Designed to measure vibrations at a single location on an object, a…

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The Impact of Poor Quality on Automotive Suppliers

On August 27, 2024, Posted by

For any company, the importance of quality cannot be overstated. This is especially true for automotive OEMs and their suppliers, the entire supply chain, from raw material suppliers to manufacturers, operates under the expectation that stringent standards will be met. When poor quality infiltrates this chain, the consequences can be…

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Acoustic Signal Analysis and Product Quality Inspection

On May 17, 2024, Posted by

Acoustic signal analysis involves the examination and interpretation of sound waves produced by a product during its operation or under specific conditions. Analyzing these acoustic signals helps to capture anomalies, ensure consistency, verify structural integrity, and ensures that the product/part meets specifications before reaching the customer. This mitigates scrap, warranty…

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What is Shock Response Spectrum Analysis?

On May 9, 2024, Posted by

Shock response spectrum (SRS) analysis is a powerful engineering method used to evaluate the dynamic response of structures subjected to shock or transient loads. SRS provides a concise representation of how a structure will respond to sudden, high-intensity events. This may include earthquakes, explosions, or impacts for example. Analysis SRS…

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Resonance Frequency 101

On April 16, 2024, Posted by

Resonance frequency is a phenomenon that occurs when an external force is applied to a system at the natural frequency of that system. In physics, this natural frequency is the frequency at which an object vibrates most strongly when disturbed. When an external force is applied at this specific frequency,…

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It’s time to get objective about quality inspection

On April 15, 2024, Posted by

Objective quality inspection allows manufacturers and suppliers to evaluate products or components using a standardized criteria and measurements. In this way, defective parts are identified before they reach the OEM or customer. Rooted in physics, objective quality inspection / testing offers several advantages including consistency, accuracy, and reliability in assessing…

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