ASTM C1323-96

Standard Test Method for Ultimate Strength of Advanced Ceramics with Diametrally Compressed C-Ring Specimens at Ambient Temperature

SCOPE
1.1 This test method covers the determination of ultimate strength under monotonic loading of advanced ceramics in tubular form at ambient temperatures. Note that ultimate strength as used in this test method refers to the strength obtained under monotonic compressive loading of C-ring specimens where monotonic refers to a continuous nonstop test rate with no reversals from test initiation to final fracture.  
1.2 Values expressed in this test method are in accordance with the International System of Units (SI) and Practice E380.  
1.3 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-Dec-2000
• Technical Committee: C28 - Advanced Ceramics
• Drafting Committee: C28.01 - Mechanical Properties and Performance

Relations

• Replaced By: ASTM C1323-96(2001) - Standard Test Method for Ultimate Strength of Advanced Ceramics with Diametrally Compressed C-Ring Specimens at Ambient Temperature
• Effective Date: 10-Apr-2001

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NOTICE: This standard has either been superseded and replaced by a new version or
withdrawn.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: C 1323 – 96
AMERICAN SOCIETY FOR TESTING AND MATERIALS
100 Barr Harbor Dr., West Conshohocken, PA 19428
Reprinted from the Annual Book of ASTM Standards. Copyright ASTM
Standard Test Method for
Ultimate Strength of Advanced Ceramics with Diametrally
1
Compressed C-Ring Specimens at Ambient Temperature
This standard is issued under the fixed designation C 1323; 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 (e) indicates an editorial change since the last revision or reapproval.
1. Scope MIL-STD-1942(A) Flexural Strength of High Performance
Ceramics at Ambient Temperature
1.1 This test method covers the determination of ultimate
strength under monotonic loading of advanced ceramics in
3. Terminology
tubular form at ambient temperatures. Note that ultimate
3.1 Definitions:
strength as used in this test method refers to the strength
3.1.1 advanced ceramic—an engineered, high-performance,
obtained under monotonic compressive loading of C-ring
predominately nonmetallic, inorganic, ceramic material having
specimens where monotonic refers to a continuous nonstop test
specific functional qualities. (C 1145)
rate with no reversals from test initiation to final fracture.
3.1.2 breaking load—the load at which fracture occurs.
1.2 Values expressed in this test method are in accordance
(E 6)
with the International System of Units (SI) and Practice E 380.
3.1.3 C-ring—circular test specimen geometry with the
1.3 This standard does not purport to address all of the
mid-section (slot) removed to allow bending displacement
safety concerns, if any, associated with its use. It is the
(compression or tension). (E 6)
responsibility of the user of this standard to establish appro-
3.1.4 flexural strength—a measure of the ultimate strength
priate safety and health practices and determine the applica-
of a specified beam in bending.
bility of regulatory limitations prior to use.
3.1.5 modulus of elasticity—the ratio of stress to corre-
2. Referenced Documents sponding strain below the proportional limit. (E 6)
3.1.6 slow crack growth—subcritical crack growth (exten-
2.1 ASTM Standards:
2
sion) which may result from, but is not restricted to, such
C 1145 Terminology on Advanced Ceramics
mechanisms as environmentally assisted stress corrosion or
C 1161 Test Method for Flexural Strength of Advanced
2 diffusive crack growth.
Ceramics at Ambient Temperature
C 1239 Practice for Reporting Uniaxial Strength Data and
4. Significance and Use
Estimating Weibull Distribution Parameters for Advanced
2
4.1 This test method may be used for material development,
Ceramics
3
material comparison, quality assurance, and characterization.
E 4 Practices for Force Verification of Testing Machines
Extreme care should be exercised when generating design data.
E 6 Terminology Relating to Methods of Mechanical Test-
3
4.2 For a C-ring under diametral compression, the maxi-
ing
mum tensile stress occurs at the outer surface. Hence, the
E 337 Test Method for Measured Humidity with Psychrom-
4
C-ring specimen loaded in compression will predominately
eter (Measurement of Wet- and Dry-Bulb Temperatures)
evaluate the strength distribution and flaw population(s) on the
E 380 Practice for Use of International System of Units (SI)
5
external surface of a tubular component. Accordingly, the
(the Modernized Metric System)
6
condition of the inner surface may be of lesser consequence in
2.2 Military Standards:
specimen preparation and testing.
MIL-HDBK-790 Fractography and Characterization of
Fracture Origins in Advanced Structural Ceramics
NOTE 1—A C-ring in tension or an O-ring in compression may be used
to evaluate the internal surface.
4.3 The flexure stress is computed based on simple curved-
1
7
This test method is under the jurisdiction of ASTM Committee C-28 on
beam theory (1) with assumptions that the material is isotropic
Advanced Ceramics and is the direct responsibility of Subcommittee C28.01 on
and homogeneous, the moduli of elasticity are identical in
Properties and Performance.
compression or tension, and the material is linearly elastic; all
Current edition approved Jan. 10, 1996. Published April 1996.
2
Annual Book of ASTM Standards, Vol 15.01.
homogeneity and isotropy assumptions preclude the use of this
3
Annual Book of ASTM Standards, Vol 03.01.
4
Annual Book of ASTM Standards, Vol 11.03.
5
Annual Book of ASTM Standards, Vol 14.01.
6 7
Available from Standardization Documents Order Desk, Bldg. 4 Section D, 700 The boldface numbers in parentheses refer to a list of references at the end of
Robbins Ave., Philadelphia, PA 19111-5094, Attn: NPODS. this test method.
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