What is ISO 8626- Servo-hydraulic test equipment about?
ISO 8626 is a safety standard on servo-hydraulic test equipment for generating vibration.
The hydraulic test equipment used for generating vibration has a wide range of characteristics that can be evaluated in many ways.
To enable the possibilities afforded by test equipment from various sources to be compared, ISO 8626 establishes:
- List of the characteristics
- The Standard method of obtaining certain of these characteristics
ISO 8626 provides two levels of description to be used in describing the test equipment, as follows:
- Level 1 description
- Level 2 description
ISO 8626 gives, for each level of description, chosen by agreement between the user and the manufacturer, a list of the characteristics to be described by the manufacturer in his tender as well as a list of technical documents to be supplied with the equipment. Furthermore, the manufacturer’s literature shall contain at least the characteristics corresponding to a level 1 description.
Note: ISO 8626 applies to the following equipment:
- Hydraulic Vibration generators [actuators, servo valves all or part of the Position control device and, if fitted, the static forte compensating device
- The servo valve control devices
- The hydraulic power systems
- The complete hydraulic vibration generator systems
Who is ISO 8626- Servo-hydraulic test equipment for?
ISO 8626 on servo-hydraulic test equipment for generating vibration is relevant to:
- Testing authorities
- Manufacturers of hydraulic test equipment and machine
- Manufacturers of tensile testing machine
- Manufacturers of servo-hydraulic test equipment
Why should you use ISO 8626- Servo-hydraulic test equipment?
The term “hydraulic” means the vibratory movement produced results from the variable flow of a liquid which is ensured by means of an electrohydraulic control device fed by a hydraulic power system and acting on an actuator, using one or several control loops.
ISO 8626 covers the characteristics of servo-hydraulic test equipment used for generating linear vibrations and serves as a guide for the selection of such equipment.
Overall, ISO 8626 is useful as it enables the user to specify separately individual components of a servo-hydraulic vibration test system if he chooses to assemble the system from components obtained from more than one source.
