This test method covers the determination of the
J-integral versus crack growth resistance (J-R)
curves for polymeric materials.
This test method is intended to characterize the slow, stable
crack growth resistance of bend-type specimens in such a manner
that it is geometry insensitive within limits set forth in this
The recommended specimens are the three-point bend (SE
(B)) and pin-loaded compact tension (C (T))
specimens. Both specimens have in-plane dimensions of constant
proportionality for all sizes. Specimen configurations other than
those recommended in this test method may require different
procedures and validity requirements.
This test method describes a multiple specimen method that
requires optical measurement of crack extension from fracture
surfaces. It is not recommended for use with materials in which the
crack front cannot be distinguished from additional deformation
processes in advance of the crack tip.
The values stated in SI units are to be regarded as the
This standard does not purport to address all of the safety
concerns, if any, associated with its use. It is the responsibility
of the user of this standard to establish appropriate safety and
health practices and determine the applicability of regulatory
limitations prior to use.
NOTE 1—There is no equivalent ISO standard.
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