ISO/NP 26519

Fiber-reinforced plastic tubes with round section — Combined test method of axial bending and AC withstand voltage

Scope

This document specifies the combined test method for axial bending and AC withstand voltage of tubes with round section made of fiber-reinforced plastic materials for power operation (with a wall thickness ranging from 2.0 to 6.0 mm, a diameter ranging from 20.0 to 70.0 mm). This document defines the test procedures, parameter monitoring requirements, and damage assessment principles for the test. This test method adopts a combined test mode of three-point bending load superimposed with AC withstand voltage, to achieve real-time damage identification under the combined electromechanical effects.
This document is applicable solely to the factory inspection, performance verification, and reliability evaluation of fiber-reinforced plastic tubes with round section. It does not apply to tubes made of non-fiber-reinforced composite materials or those with special cross-sectional shapes.