ISO 8626:1989/Amd 1:2016

Overview

ISO 8626:1989/Amd 1:2016 is an essential international standard published by the International Organization for Standardization (ISO). It provides an amendment to the original ISO 8626:1989 edition focused on servo-hydraulic test equipment used for generating vibrations. This amendment updates the method of describing the characteristics of such equipment, ensuring more precise and consistent measurements.

Servo-hydraulic vibration test equipment plays a crucial role in mechanical vibration, shock, and condition monitoring industries. The standard acts as a guideline for manufacturers and users, guaranteeing that vibration generation and measurement conform to internationally recognized procedures.

Key Topics

• Servo-Hydraulic Test Equipment
  The standard applies specifically to servo-hydraulic systems designed to simulate and generate controlled mechanical vibrations for testing purposes.

• Method of Describing Characteristics
  ISO 8626:1989/Amd 1:2016 provides the method to describe the characteristics of the vibration generated, especially focusing on the precise measurement of transverse motion and vibration amplitude.

• Transverse Motion Measurement
  A critical update in Amendment 1 is the detailed procedure to determine the transverse motion ratio (T) of the test table or power take-off as a function of frequency. This is described mathematically by the maximum ratio of accelerations along orthogonal axes relative to the operating axis amplitude.

• Measurement Conditions
  The standard prescribes performing measurements at no load and, when possible, at rated force. It mandates clear specification by manufacturers regarding the method and applied force for these measurements.

• Cooperation Between Manufacturer and User
  ISO 8626 encourages additional measurements, such as those involving test loads or alternate points on the test table, to be agreed upon by both parties for enhanced validation.

Applications

• Mechanical Vibration Testing
  Widely used in automotive, aerospace, and industrial product testing, servo-hydraulic vibration equipment tested according to this standard ensures safety and reliability of components under vibratory stress.

• Shock and Condition Monitoring
  Equipment calibration and standardization benefit condition monitoring and failure analysis by providing consistent vibration generation parameters.

• Product Development and Quality Control
  Manufacturing processes depend on standardized vibration testing to verify product tolerance and durability specifications.

• Research and Development
  Academic and industrial laboratories use ISO 8626 guidelines to maintain measurement integrity during dynamic testing experiments.

Related Standards

• ISO/IEC Directives
  The development and maintenance of this amendment follow ISO/IEC Directives, ensuring harmonization and compliance with international editorial and procedural rules.

• ISO/TC 108 Standards
  This document falls under the responsibility of ISO Technical Committee 108, which focuses on mechanical vibration, shock, and condition monitoring.

• IEC Standards on Electrotechnical Equipment
  Collaborations with the International Electrotechnical Commission (IEC) ensure that electromechanical interfaces of servo-hydraulic systems are compliant with relevant safety and performance standards.

Practical Value

ISO 8626:1989/Amd 1:2016 is crucial for manufacturers and users striving for precision in vibration testing. By defining accurate measurement methods for transverse motion and forcing conditions, it helps reduce variability, improve equipment performance, and enhance test result reliability. Compliance with this standard assists in meeting quality assurance targets, regulatory requirements, and international trade conditions tied to product vibration testing.

Keywords: servo-hydraulic test equipment, vibration generation, transverse motion measurement, mechanical vibration testing, ISO 8626 amendment, vibration test standards, mechanical shock monitoring, vibration test table, vibration amplitude, vibration characteristics description.