🔥🔥 Don’t Miss Out on Our End of Autumn Sale. If you have any questions, feel free to click the bottom right corner to contact our customer service..

Concat us[email protected]
Shopping Cart

No products in the cart.

🔍
ASTM-E1820:2011 Edition

ASTM-E1820:2011 Edition

$63.38

E1820-11 Standard Test Method for Measurement of Fracture Toughness

Published By Publication Date Number of Pages
ASTM 2011 56
PDF Format Searchable Printable Preview Now
Guaranteed Safe Checkout
Categories: ,

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

1.1 This test method covers procedures and guidelines for the determination of fracture toughness of metallic materials using the following parameters: K, J , and CTOD ( ? ). Toughness can be measured in the R -curve format or as a point value. The fracture toughness determined in accordance with this test method is for the opening mode (Mode I) of loading.

1.2 The recommended specimens are single-edge bend, [SE(B)], compact, [C(T)], and disk-shaped compact, [DC(T)]. All specimens contain notches that are sharpened with fatigue cracks.

1.2.1 Specimen dimensional (size) requirements vary according to the fracture toughness analysis applied. The guidelines are established through consideration of material toughness, material flow strength, and the individual qualification requirements of the toughness value per values sought.

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

1.4 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 1Other standard methods for the determination of fracture toughness using the parameters K, J , and CTOD are contained in Test Methods E399 , E1290 , and E1921 . This test method was developed to provide a common method for determining all applicable toughness parameters from a single test.

A14.1.1 This annex covers the determination of the rate dependent J Ic (t) and the J -integral versus crack growth resistance curve ( J-R(t) curve) for metallic materials under conditions where the loading rate exceeds that allowed for conventional (static) testing, see Section 8.4.2.

A15.1.1 The normalization technique can be used in some cases to obtain a J-R curve directly from a force displacement record taken together with initial and final crack size measurements taken from the specimen fracture surface. Additional restrictions are applied (see A15.3) which limit the applicability of this method. The normalization technique is described more fully in Herrera and Landes ( 22 ) and Landes, et al. ( 23 ), Lee ( 24 ), and Joyce ( 21 ). The normalization technique is most valuable for cases where high loading rates are used, or where high temperatures or aggressive environments are being used. In these, and other situations, unloading compliance methods are impractical. The normalization method can be used for statically loaded specimens if the requirements of this section are met. The normalization method is not applicable for low toughness materials tested in large specimen sizes where large amounts of crack extension can occur without measurable plastic force line displacement.

PDF Catalog

PDF Pages PDF Title
1 Scope
Referenced Documents
Terminology
2 FIG. 1
4 Summary of Test Method
5 Significance and Use
Apparatus
FIG. 2
6 FIG. 3
FIG. 4
7 Specimen Size, Configuration, and Preparation
FIG. 5
8 FIG. 6
9 Procedure
FIG. 7
11 Analysis of Results
12 Report
Precision and Bias
FIG. 8
13 Keywords
A1. SPECIAL REQUIREMENTS FOR TESTING SINGLE EDGE BEND SPECIMENS
A1.1 Specimen
A1.2 Apparatus
A1.3
FIG. 9
14 A1.4 Calculation
FIG. A1.1
15 FIG. A1.2
FIG. A1.3
16 A2. SPECIAL REQUIREMENTS FOR TESTING COMPACT SPECIMENS
A2.1 Specimen
A2.2 Apparatus
A2.3 Specimen Preparation
A2.4 Calculation
17 FIG. A2.1
18 FIG. A2.2
19 FIG. A2.3
20 A3. SPECIAL REQUIREMENTS FOR TESTING DISK-SHAPED COMPACT SPECIMENS
A3.1 Specimen
A3.2 Apparatus
A3.3 Specimen Preparation
A3.4 Procedure
FIG. A3.1
21 A3.5 Calculation
22 A4. METHODS FOR EVALUATING INSTABILITY AND POP-IN
A4.1 Assessment of Force/Clip Gage Displacement Records
23 FIG. A4.1
FIG. A4.2
24 A5. METHOD FOR KIc DETERMINATION
A5.1
A5.2
A5.3
FIG. A4.3
FIG. A5.1
25 A5.4
A5.5
A6. FRACTURE INSTABILITY TOUGHNESS DETERMINATION USING J
A6.1
A6.2
26 A6.3
A6.4
A7. FRACTURE INSTABILITY TOUGHNESS DETERMINATION USING CTOD ()
A7.1
A7.2
A7.3
A8. J-R CURVE DETERMINATION
A8.1
A8.2
27 A8.3
A8.4
A9. JIc and KJIc EVALUATION
A9.1
A9.2
A9.3
FIG. A8.1
28 A9.4
A9.5
A9.6
FIG. A9.1
29 A9.7
A9.8
A9.9 Evaluation of KJIc
A10. METHOD FOR -R CURVE DETERMINATION
A10.1
A10.2
A10.3
FIG. A9.2
30 A10.4
A11. METHOD FOR Ic DETERMINATION
A11.1
A11.2
A11.3
A11.4
A11.5
A11.6
FIG. A10.1
31 FIG. A11.1
FIG. A11.2
32 A11.7
A11.8
A12. COMMON EXPRESSIONS
A12.1
A12.2
TABLE A12.1
33 A13. METHOD FOR RAPID LOADING KIc DETERMINATION
A13.1
A13.2
A13.3
A13.4
TABLE A12.2
34 A13.5
A13.6
FIG. A13.1
35 A14. SPECIAL REQUIREMENTS FOR RAPID-LOAD J-INTEGRAL FRACTURE TOUGHNESS TESTING
A14.1 Scope
A14.2 Summary of Requirements
FIG. A13.2
36 A14.3. Terminology
A14.4 Significance and Use
A14.5 Apparatus
37 FIG. A14.1
FIG. A14.2
38 FIG. A14.3
39 FIG. A14.4
40 FIG. A14.5
FIG. A14.6
41 A14.6 Procedure
A14.7 Qualification of the Data
42 A14.8 Qualifying the High Rate Results
A14.9 Report
A14.10 Precision and Bias
A15. NORMALIZATION DATA REDUCTION TECHNIQUE
A15.1 Scope
FIG. A14.7
43 A15.2 Analysis
FIG. A15.1
44 FIG. A15.2
FIG. A15.3
45 A15.3 Additional Requirements
FIG. A15.4
46 A15.4 Report
A15.5 Precision and Bias
FIG. A15.5
47 A16. EVALUATION OF CRACK GROWTH CORRECTED J-INTEGRAL VALUES
A16.1 J Correction Procedure
A17. FRACTURE TOUGHNESS TESTS AT IMPACT LOADING RATES USING PRECRACKED CHARPY-TYPE SPECIMENS
A17.1 Scope
A17.2 Principle
A17.3 Specimen Size, Configuration, and Preparation
A17.4 Apparatus
TABLE A17.1
48 FIG. A17.1
49 A17.5 Test Procedures and Measurements
A17.6 Analysis of Results
50 A17.7 Determination of J-R curves at Impact Loading Rates by Multiple Specimen Methods
A17.8 J-R Curve Determination by Single Specimen Methods
51 A17.9 Determination of Fracture Toughness Near the Onset of Stable Crack Extension
A17.10 Report
X1. FITTING OF EQUATION A9.1
X1.1
X1.2
52 X2. GUIDELINES FOR MEASURING THE FRACTURE TOUGHNESS OF MATERIALS WITH SHALLOW CRACKS
X2.1 Significance and Use
X2.2 Terminology
X2.3 Specimen Size and Configuration
X2.4 Apparatus
53 FIG. X2.1
FIG. X2.2
54 X2.5 Specimen Preparation
X2.6 Procedure
X2.7 Calculation
X2.8 Analysis of Results
55 REFERENCES

Related products

ASTM-E1820
$63.38