Standard Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Growth of Polyethylene Pipes and Resins

Importancia y uso:

5.1 This test method is useful to measure the slow crack growth resistance of molded plaques of polyethylene materials at accelerated conditions such as 80 °C, 2.4 MPa stress, and with a sharp notch.

5.2 The testing time or time to failure depends on the following test parameters: temperature; stress; notch depth; and specimen geometry. Increasing temperature, stress, and notch depth decrease the time to failure. Material parameters, not controlled by the laboratory, that could impact the test results (time to failure) are: pigment (color or carbon black) and the carrier resin for the pigment, or both. Thus, in reporting the test time or time to failure, all the conditions of the test shall be specified.

Note 4: Time to failure can also be affected by the degree of pigment (color or carbon black) dispersion and distribution within the test specimen. Test Method D5596 and ISO 18553 provide methods for assessing the degree of dispersion and distribution of the pigment

Subcomité:

F17.40

Referida por:

D6068-10R18, F3524_F3524M-23, D2513-24, F1055-16AR22, F2619_F2619M-20, F2818-10R23, D3350-24, F3373-21, F2769-24, F3123-22, F0412-24A, F2785-21, D3261-24, D4976-12AR20

Volúmen:

08.04

Número ICS:

23.040.20 (Plastic pipes)

Palabras clave:

fracture; notch testing; pipes; polyethylene; resin; slow crack growth ;