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The SAE J1752/3-2017 standard provides a robust and reproducible method for measuring electromagnetic radiation from integrated circuits (ICs). By integrating the IC test board into the wall of a TEM or wideband TEM (GTEM) cell, this approach eliminates the influence…

🛠️ Accurate measurement of brake fluid temperature is essential for evaluating brake system performance, fluid stability, and vehicle safety. SAE J291 is a stabilized recommended practice that specifies procedures for measuring brake fluid temperature during road tests. First published in…

The SAE J1075–2021 standard provides a consistent, repeatable approach for measuring sound levels at construction site boundaries. It offers two validated methods—manual sampling with a sound level meter and integrating-averaging with an integrating sound level meter—to determine a representative sound…

SAE J1096 (APR2021) is a recommended practice that outlines a standardized method for measuring the maximum exterior sound level of heavy-duty trucks and tractors with a GVWR over 4540 kg, equipped with governed engines, under stationary conditions. This test is…

The SAE J2889-1 standard defines an engineering method for measuring the sound emitted by M and N category road vehicles at standstill and low speed conditions. This measurement is essential for pedestrian safety, helping to ensure that quiet vehicles produce…

SAE J1752-2 defines a standardized approach for evaluating near-field electric or magnetic components at the surface of an integrated circuit (IC). Using loop probes and precision scanning, this method identifies internal RF sources and produces color-enhanced field strength maps. It…

This article covers the SAE J177 recommended practice for analyzing carbon dioxide, carbon monoxide, and oxides of nitrogen in diesel engine exhaust under steady-state conditions. The standard relies on nondispersive infrared (NDIR) techniques for CO2, CO, and NO, and chemiluminescence…

Why Underlayer Distribution Matters The underlayer, also known as the backing layer, is the material between the friction compound and the shoe plate. Its distribution across the pad directly influences brake performance, lining life, and wear uniformity. Measuring this distribution…

Snowmobile noise regulation is critical for environmental and community standards. The SAE J192-2021 standard provides a comprehensive method for determining the maximum exterior sound level of snowmobiles. This article breaks down the key aspects of the standard, including instrumentation requirements,…

SAE J47-2020 is a recommended practice that defines the test procedure, environment, and instrumentation for determining the maximum sound level potential of motorcycles under wide-open throttle acceleration and closed-throttle deceleration. Originally issued in 1975 and reaffirmed in 2020, this standard…