Standards and guidelines

SAE J1637 - Laboratory Measurement of the Composite Vibration Damping Properties of Materials on a Supporting Steel Bar

Describes a laboratory method for determining damping characteristics (composite/material damping) using a defined steel beam as a reference setup.

• vOberstBeam

SAE J2598 - Automotive Disc Brake Pad Natural Frequency and Damping Test

Defines a test procedure for determining the natural frequencies and damping of disc brake pads under reproducible laboratory conditions.

• Natural frequency test stand | NFT ⧉
• Frequency and damping test stand | FDT ⧉

SAE J2933 - Verification of Brake Rotor and Drum Modal Frequencies

Describes how the modal natural frequencies of brake discs and drums are measured and verified against target/reference values.

• Natural frequency test stand | NFT ⧉
• Frequency and damping test stand | FDT ⧉

SAE J3001 - Brake Insulator Damping Measurement Procedure

Defines a measurement method for determining the damping of brake insulators in order to assess and compare their vibration- and noise-relevant behavior.

• Damping test stand | DTS ⧉

VDA 301 - Eigenfrequenzmessung und Modalanalyse von Bremsscheiben in der Entwicklung

Describes the natural frequency and mode shape analysis of brake discs required during the development process and for development release (measurements on the raw part and on the fully machined disc).

• Automated modal analysis | AMA ⧉ (4b)
• Quality control test stand | VQC ⧉ (4a)
• Acoustic quality control test stand | AQC ⧉ (4a)

VDA 302 - Eigenfrequenzmessung von Bremsscheiben in der Serienproduktion

Defines the procedure required in series production for measuring and analysing the natural frequencies of brake discs (front and rear axle).

• Natural frequency test stand | NFT ⧉
• Frequency and damping test stand | FDT ⧉
• Quality control test stand | VQC ⧉
• Acoustic quality control test stand | AQC ⧉

DIN 4150-2 - Erschütterung im Bauwesen, Teil 2: Einwirkungen auf Menschen in Gebäuden

Defines a method for assessing vibration exposure affecting people in buildings, including source-specific adaptation of the evaluation.

• Vibration monitoring | vMonitor ⧉

DIN 4150-3 - Erschütterung im Bauwesen, Teil 3: Einwirkungen auf Bauliche Anlagen

Specifies methods for determining and assessing vibration effects on structures that are predominantly designed for resting (static) loads.

• Vibration monitoring | vMonitor ⧉

DIN EN ISO 9300 - Measurement of gas flow by means of critical flow Venturi nozzles

Describes the measurement of gas flow rates using critical flow through Venturi and critical flow nozzles, including specifications for flow-rate calculation and measurement uncertainty.

• Air mass flow measurement stand | ATS ⧉

DIN SPEC 45653 - In-situ-Ermittlung der Einfügungsdämpfung schallreduzierender Maßnahmen im Unterwasserbereich

Describes methods for experimentally determining the in-situ insertion loss of noise-reducing measures in underwater environments, e.g., in offshore applications.

• Hydroacoustic ⧉

ASTM E756-05 - Standard Test Method for Measuring Vibration-Damping Properties of Materials

Standard test method for measuring vibration damping properties of materials (e.g., loss factor) as a basis for designing measures to reduce vibration and structure-borne noise.

• vOberstBeam