ASTM D6068-96(2002)e1
Historical Standard: ASTM D6068-96(2002)e1 Standard Test Method for Determining J-R Curves of Plastic Materials
SUPERSEDED (see Active link, below)
ASTM D6068
1. Scope
1.1 This test method covers the determination of the J -integral versus crack growth resistance (J-R ) curves for polymeric materials.
1.2 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 test method.
1.3 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.
1.4 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.
1.5 The values stated in SI units are to be regarded as the standard.
1.6 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 1There is no equivalent ISO standard.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
D618 Practice for Conditioning Plastics for Testing
D4066 Classification System for Nylon Injection and Extrusion Materials (PA)
D5045 Test Methods for Plane-Strain Fracture Toughness and Strain Energy Release Rate of Plastic Materials
E399 Test Method for Linear-Elastic Plane-Strain Fracture Toughness K Ic of Metallic Materials
E616 Terminology Relating to Fracture Testing (Discontinued 1996)
E1152 Test Method for Determining-J-R-Curves
E1737 Test Method for J-Integral Characterization of Fracture Toughness
F1473 Test Method for Notch Tensile Test to Measure the Resistance to Slow Crack Growth of Polyethylene Pipes and Resins
Keywords
crack growth resistance; fracture toughness; J-R curves; plastics; polymers; Cracking--crack growth; Fracture testing--plastics; J-R curves; Loading tests--plastics; Plastic materials; Polymers;
ICS Code
ICS Number Code 83.040.01 (Raw materials for rubber and plastics in general)
DOI: 10.1520/D6068-96R02E01
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