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ASTM B871-01(2007)

(Test Method)

Standard Test Method for Tear Testing of Aluminum Alloy Products

Standard Test Method for Tear Testing of Aluminum Alloy Products

SCOPE
1.1 This test method covers the static tear test of aluminum alloy products using specimens that are 0.040 in. (1 mm) to 0.250 in. (6.35 mm) thick.
1.2 This test method is applicable to aluminum alloy products having a minimum thickness of 0.040 in. (1 mm).
1.3 This test method provides a measure of both notch toughness and resistance to crack propagation with the primary use as a screening or merit rank test.
1.4 The reliability of the tear test has been established in various research programs by reasonably good correlations between data from the tear tests and fracture toughness tests.
Note 1—Direct measurement of fracture toughness may be made in accordance with Practices B 645, B 646 and Test Method E 399.
1.5 The values stated in inch-pound units are to be regarded as the standard. The values given in parentheses are for information only.
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.

General Information

Status
Historical
Publication Date
31-Mar-2007
ICS
77.040.10 - Mechanical testing of metals
77.150.10 - Aluminium products
Technical Committee
B07 - Light Metals and Alloys
Drafting Committee
B07.05 - Testing
Current Stage
Ref Project

Relations

Replaces
ASTM B871-01 - Standard Test Method for Tear Testing of Aluminum Alloy Products
Effective Date
01-Apr-2007
Replaced By
ASTM B871-01(2013) - Standard Test Method for Tear Testing of Aluminum Alloy Products (Withdrawn 2017)
Effective Date
01-May-2013

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ASTM B871-01(2007) - Standard Test Method for Tear Testing of Aluminum Alloy Products
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Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation: B871 − 01(Reapproved 2007)
Standard Test Method for
1
Tear Testing of Aluminum Alloy Products
This standard is issued under the fixed designation B871; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope B646 Practice for Fracture Toughness Testing of Aluminum
Alloys
1.1 This test method covers the static tear test of aluminum
E4 Practices for Force Verification of Testing Machines
alloy products using specimens that are 0.040 in. (1 mm) to
E83 Practice for Verification and Classification of Exten-
0.250 in. (6.35 mm) thick.
someter Systems
1.2 This test method is applicable to aluminum alloy prod-
E338 Test Method of Sharp-Notch Tension Testing of High-
ucts having a minimum thickness of 0.040 in. (1 mm). 5
Strength Sheet Materials (Withdrawn 2010)
E399 Test Method for Linear-Elastic Plane-Strain Fracture
1.3 This test method provides a measure of both notch
toughness and resistance to crack propagation with the primary Toughness K of Metallic Materials
Ic
use as a screening or merit rank test.
3. Terminology
1.4 The reliability of the tear test has been established in
3.1 Definitions of Terms Specific to This Standard:
various research programs by reasonably good correlations
2,3 3.1.1 initiation energy, IE (FL)—the amount of energy
between data from the tear tests and fracture toughness tests.
required to initiate a crack in a tear specimen. Initiation energy
NOTE 1—Direct measurement of fracture toughness may be made in
is determined by integrating the area under the force-
accordance with Practices B645, B646 and Test Method E399.
displacement curve from the beginning of the test to the point
1.5 The values stated in inch-pound units are to be regarded
of maximum force.
as the standard. The values given in parentheses are for
3.1.2 propagation energy, PE (FL)—the amount of energy
information only.
required to propagate a crack in a tear specimen. Propagation
1.6 This standard does not purport to address all of the
energy is determined by integrating the area under the force-
safety concerns, if any, associated with its use. It is the
displacement curve from the point of maximum force to the
responsibility of the user of this standard to establish appro-
point of complete fracture.
priate safety and health practices and determine the applica-
3.1.3 tear resistance—a general term describing the resis-
bility of regulatory limitations prior to use.
tance of a material to crack propagation under static loading,
either in an elastic or plastic stress field.
2. Referenced Documents
−2
3.1.4 tear strength, TS (FL )—the maximum nominal di-
4
2.1 ASTM Standards:
rect and bending stress that the tear specimen is capable of
B557 Test Methods for Tension Testing Wrought and Cast
sustaining.
Aluminum- and Magnesium-Alloy Products
3.1.5 tear strength to tensile yield strength ratio (TYR)—the
B645 Practice for Linear-Elastic Plane–Strain Fracture
ratio of the tear strength to tensile yield strength of the material
Toughness Testing of Aluminum Alloys
determined in accordance with Test Methods B557.
−1
3.1.6 unit propagation energy, UPE (FL )—the amount of
1
This test method is under the jurisdiction of ASTM Committee B07 on Light
energy required to propagate a crack across a tear specimen
Metals and Alloys and is the direct responsibility of Subcommittee B07.05 on
divided by the original net area of the specimen.
Testing.
Current edition approved April 1, 2007. Published May 2007. Originally
4. Summary of Test Method
approved in 1996. Last previous edition approved in 2001 as B871–01. DOI:
10.1520/B0871-01R07.
4.1 The tear test involves a single edge notched specimen
2
Kaufman, J. G., and Holt, Marshall, “Fracture Characteristics of Aluminum
that is statically loaded through pin loading holes. The force
Alloys,” Alcoa Research Laboratories Technical Paper No. 18.
3
and displacement required to fracture the specimen are re-
Kaufman, J. G., and Knoll,A. H., “Kahn-TypeTearTests and CrackToughness
of Aluminum Sheet,” Metals Research and Standards, April 1964, pp. 151–155.
corded for analysis.
4
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
5
Standards volume information, refer to the standard’s Document Summary page on The last approved version of this historical standard is referenced on
the ASTM website. www.astm.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

---------------------- Page: 1 ----------------------
B871 − 0
...

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