ASTM-E399 2006

$58.50

E399-06e2 Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness K Ic of Metallic Materials

Published By	Publication Date	Number of Pages
ASTM	2006	32

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Categories: 77.040.10 - Mechanical testing of metals, ASTM

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Description

1.1 This test method covers the determination of fracture toughness (K Ic ) of metallic materials under predominantly linear-elastic, plane-strain conditions using fatigue precracked specimens having a thickness of 1.6 mm (0.063 in.) or greater subjected to slowly, or in special (elective) cases rapidly, increasing crack-displacement force. Details of test apparatus, specimen configuration, and experimental procedure are given in the Annexes.

Note 1

Plane-strain fracture toughness tests of thinner materials that are sufficiently brittle (see ) can be made using other types of specimens () . There is no standard test method for such thin materials.

1.2 This test method is divided into two parts. The first part gives general recommendations and requirements for K Ic testing. The second part consists of Annexes that give specific information on displacement gage and loading fixture design, special requirements for individual specimen configurations, and detailed procedures for fatigue precracking. Additional annexes are provided that give specific procedures for beryllium and rapid-force testing.

1.3 General information and requirements common to all specimen configurations:

SectionReferenced Documents Terminology Stress-Intensity Factor Plane-Strain Fracture Toughness Crack Plane Orientation Summary of Test Method Significance and Use Significance Precautions Practical Applications Apparatus (see also ) Tension Machine Fatigue Machine Loading Fixtures Displacement Gage, Measurement Specimen Size, Configurations, and Preparation (see also ) Specimen Size Estimates Standard and Alternative Specimen Configurations Fatigue Crack Starter Notches Fatigue Precracking (see also ) Crack Extension Beyond Starter Notch General Procedure Specimen Measurements Thickness Width Crack Size Crack Plane Angle Specimen Testing Loading Rate Test Record Calculation and Interpretation of Results Test Record Analysis P m a x /P Q Validity Requirement Specimen Size Validity Requirements Reporting Precision and Bias

1.4 Specific requirements related to test apparatus:

Double-Cantilever Displacement Gage Testing Fixtures Bend Specimen Loading Fixture Annex Compact Specimen Loading Clevis Annex

1.5 Specific requirements related to individual specimen configurations:

Bend Specimen SE(B)Compact Specimen C(T)Disk-Shaped Compact Specimen DC(T)Arc-Shaped Tension Specimen A(T)Arc-Shaped Bend Specimen A(B)

1.6 Specific requirements related to special test procedures:

Fatigue Precracking KIc Specimens Hot-Pressed Beryllium Testing Rapid-Force Testing

1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only.

1.8 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.

PDF Catalog

PDF Pages	PDF Title
1	Scope
2	Referenced Documents Terminology
3	FIG. 1
4	Summary of Test Method Significance and Use
5	Apparatus FIG. 2
6	Specimen Size, Configurations, and Preparation FIG. 3 FIG. 4
7	FIG. 5
8	General Procedure
9	Calculation and Interpretation of Results FIG. 6
10	Report Precision and Bias TABLE 1
11	FIG. 7 TABLE 2
12	A1. DOUBLE-CANTILEVER DISPLACEMENT GAGE A1.1 FIG. A1.1
13	A2. TESTING FIXTURES A2.1 Bend Specimen Loading Fixture A2.2 Compact Specimen Loading Clevis FIG. A1.2
14	FIG. A2.1
15	A3. SPECIAL REQUIREMENTS FOR TESTING BEND SPECIMENS A3.1 Specimen A3.2 Specimen Preparation A3.3 Apparatus A3.4 Procedure FIG. A2.2
16	A3.5 Calculations
17	A4. SPECIAL REQUIREMENTS FOR TESTING COMPACT SPECIMENS A4.1 Specimen A4.2 Specimen Preparation A4.3 Apparatus A4.4 Procedure A4.5 Calculations FIG. A3.1
19	A5. SPECIAL REQUIREMENTS FOR TESTING DISK-SHAPED COMPACT SPECIMENS A5.1 Specimen A5.2 Specimen Preparation A5.3 Apparatus A5.4 Procedure FIG. A4.1
20	A5.5 Calculations FIG. A5.1 TABLE A5.1
21	A6. SPECIAL REQUIREMENTS FOR TESTING ARC-SHAPED TENSION SPECIMENS A6.1 Specimen A6.2 Specimen Preparation A6.3 Apparatus
22	A6.4 Procedure FIG. A6.1 FIG. A6.2
23	A6.5 Calculations
24	A7. SPECIAL REQUIREMENTS FOR TESTING ARC-SHAPED BEND SPECIMENS A7.1 Specimen A7.2 Specimen Preparation FIG. A7.1
25	A7.3 Apparatus A7.4 Procedure FIG. A7.2
26	A7.5 Calculations A8. FATIGUE PRECRACKING KIc FRACTURE TOUGHNESS SPECIMENS A8.1 Introduction A8.2 Equipment
27	A8.3 Specimen Requirements A8.4 Precracking Procedure
28	A9. SPECIAL REQUIREMENTS FOR TESTING HOT-PRESSED BERYLLIUM A9.1 Scope A9.2 Specimen Size, Configuration and Preparation A9.3 Testing and Record Analyses
29	A10. SPECIAL REQUIREMENTS FOR RAPID-FORCE, PLANE-STRAIN FRACTURE TOUGHNESS KIc (t) TESTING A10.1 Scope A10.2 Summary of Requirements A10.3 Significance and Use A10.4 Terminology A10.5 Apparatus A10.6 Procedure
30	A10.7 Calculation and Interpretation of Results FIG. A10.1 FIG. A10.2
31	A10.8 Report A10.9 Precision and Bias REFERENCES

Additional information

Standard Title	E399-06e2 Standard Test Method for Linear-Elastic Plane-Strain Fracture Toughness <bdit>K<inf> Ic</inf></bdit> of Metallic Materials
Published Code	ASTM
Publication Date	2006
Pages Count	32
ICS Codes	77.040.10 - Mechanical testing of metals

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ASTM-E399 2006

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