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creep rupture testing

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003288
EISBN: 978-1-62708-176-4
... Abstract This article reviews the basic equipment and methods for creep and creep rupture testing. It begins with a discussion on the creep properties, including stress and temperature dependence, as well as of the extrapolation techniques that permit estimation of the long-term creep...
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Published: 01 January 1993
Fig. 12 Bulk creep-rupture tests of 96.5S-3.5Ag. Source: Ref 13 More
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Published: 01 January 2000
Fig. 6 Schematic of a test stand used for creep and stress-rupture testing More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003286
EISBN: 978-1-62708-176-4
... has been achieved by reducing component geometry, leading to greater stresses in high-temperature materials. Naturally, the importance of reliable creep and stress-rupture testing increases with increasing service stress. Introducing new high-temperature materials that have lower densities is another...
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Published: 01 December 2004
Fig. 7 Recrystallized Ti-6Al-4V alloy with a crack resulting from creep-rupture testing. Attack polished and color etched in 100 mL distilled H 2 O, 4 mL HCl, and 3 g NH 4 HF 2 . Polarized light illumination. 100×. (G. Müller) More
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Published: 01 December 2004
Fig. 26 Recrystallized Ti-6Al-4V alloy with a crack resulting from creep-rupture testing. Attack polished and color etched in 100 mL distilled H 2 O, 4 mL HCl, and 3 g NH 4 HF 2 . Polarized light illumination. 100×. (G. Müller) More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003289
EISBN: 978-1-62708-176-4
... of required creep-rupture properties based on insufficient data. Methods for evaluation of remaining creep-rupture life, including parametric modeling, isostress testing, accelerated creep testing, evaluation by the Monkman-Grant coordinates, and the Materials Properties Council (MPC) Omega method, are also...
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Published: 01 January 1990
Fig. 32 Stress-rupture results for creep tests at 180 °C (355 °F) on aluminum alloys with silver additions compared with those for 2 xxx series alloys. Alloy A: 6.3% Cu, 0.5% Mg, 0.5% Ag, 0.5% Mn, and 0.2% Zr. Alloy B: 6.0% Cu, 0.45% Mg, 0.5% Ag, 0.5% Mn, and 0.14% Zr. CWQ, cold-water More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003291
EISBN: 978-1-62708-176-4
... components and multiaxial testing methods. multiaxial stress creep creep rupture tubular component effective stress effective strain elastic stress distribution steady-state creep stress multiaxial creep ductility multiaxial testing thermal stress DESIGN OF PRESSURIZED COMPONENTS...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006807
EISBN: 978-1-62708-329-4
... in.) As stated earlier in this article, the uniaxial creep test may generate deformation data and/or rupture data. Historically, rupture data have been more prevalent than deformation data, because measuring the time to failure requires less sophisticated instrumentation than measuring deflection over time...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002472
EISBN: 978-1-62708-194-8
... selection and the setting of basic design rules. The article examines the limitations of high-temperature components as well as the alternative design approaches and tests for most high-temperature components. creep creep rupture deformation elevated-temperature design high temperature...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006921
EISBN: 978-1-62708-395-9
..., then the service lifetime can be estimated. The stress rupture data can also be used to rank materials, so the material with the best long-term properties can be selected. Creep and Creep Rupture Testing Polymer materials present challenges in the prediction of lifetime service due to their viscoelastic...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
...) Relationship of strain rate, or creep rate, and time during a constant-load creep test. The minimum creep rate is attained during second-stage creep Creep and stress-rupture data usually are obtained under constant-load test condition, and therefore, the stress in the gage section varies with time...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005416
EISBN: 978-1-62708-196-2
... alloy. Example 2: Creep Rupture and Hot-Strength Creep rupture tests are expensive to conduct because to obtain results representative of service, the tests may require many years before rupture occurs. It was discovered using neural network analysis ( Ref 17 ) that the temperature dependence...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... creep tests under a constant stress instead of a constant load. Each of these early studies on creep revealed a change in the creep response of a material as a function of time. Bulk Creep Behavior Some key material properties at high temperature are thermal expansion coefficient, stress rupture...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001035
EISBN: 978-1-62708-161-0
...-rupture properties or the degree of deformation from creep. In recent years, the worldwide interest in life extension of high-temperature components has also promoted considerably more interest in elevated-temperature fatigue. This effort has led to tests and methods for evaluating the effects of creep...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009218
EISBN: 978-1-62708-176-4
... Abstract This article presents typical problems encountered in the analysis of experimental creep and creep-rupture data and the possible solutions to these drawbacks. It provides information on planning the test and creep strain/time relationships. The exponential creep equation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
... evaluations, the creep cavitation damage assessment, the oxide-scale-based life prediction, and high-temperature crack growth methods. coating evaluation creep cavitation damage assessment elevated-temperature failure gas turbine blade hardness testing high-temperature crack growth methods life...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001477
EISBN: 978-1-62708-173-3
... assumed material properties and damage rules. The most widely applied creep-life fraction rule can be expressed as: (Eq 7) Σ t i t r = 1 where t i is the time spent at a given stress and temperature and t r is the rupture life for the same test conditions. When the damage...
Series: ASM Handbook
Volume: 1
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v01.a0001048
EISBN: 978-1-62708-161-0
... and stress-rupture values (for example, 100,000 h) are often extrapolated from shorter-term tests, which are conducted at high stresses and in which creep is dislocation controlled. Whether these property values are extrapolated or determined directly often has little bearing on the operating life of high...