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creep crack growth rate

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540281
EISBN: 978-1-62708-309-6
... time-dependent fracture mechanics. It also introduces two new fracture indices, the J-integral for handling large-scale yielding and the C*-integral for creep crack growth, providing close-form and handbook solutions for each. C*-integral creep crack growth rate J-integral nonlinear fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780199
EISBN: 978-1-62708-281-5
... Abstract This article describes the general aspects of and practical problems of failure analysis of creep, stress relaxation, and yielding for homogeneous polymers. The effect of temperature and strain rate on the relationship between yield point and elastic modulus and the aging effect that...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240117
EISBN: 978-1-62708-251-8
... then decreases with time. On the other hand, recrystallization, which is a nucleation and growth process, starts slowly and then builds up to a maximum rate before rapidly leveling off. Accordingly, isothermal recrystallization curves are typically sigmoidal in shape ( Fig. 8.12 ) where there is an...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240265
EISBN: 978-1-62708-251-8
...: Ref 1 Fig. 15.7 Stress-rupture curves with high and low rupture ductility. Source: Ref 1 Since the creep and stress-rupture tests are similar, there are a number of empirical relationships that relate steady-state creep rate, ε ˙ s , to rupture life, t R . Monkman and...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540215
EISBN: 978-1-62708-309-6
... growth rates in each of the three stages of progression. Using images, diagrams, and data plots, it reveals how cracks advance in step with successive stress cycles and explains how fatigue crack growth rates can be determined by examining striations on fracture specimens and correlating their widths...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480113
EISBN: 978-1-62708-318-8
... ductility as well as creep, fatigue strength, and fatigue crack growth rate. It also discusses the influence of other titanium phases and the properties of titanium-based intermetallic compounds, metal-matrix composites, and shape-memory alloys. alloy composition alpha titanium alloys alpha-beta...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090191
EISBN: 978-1-62708-266-2
... accelerated creep. The effects of accelerated creep can be either beneficial or deleterious. For example, under constant-displacement conditions load relaxation occurs ( Fig. 6.7 ), whereas under constant-load conditions elevated creep rates result, and cracking is enhanced. Fig. 6.7 Effects of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610303
EISBN: 978-1-62708-303-4
... chapter describes some of methods used to determine maximum permissible crack size and predict growth rates. It explains how the information can then be used to control fractures through periodic inspection, fail-safe features, mandated retirement, and proof testing. It presents a number of fracture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540297
EISBN: 978-1-62708-309-6
... Determination of Slow Crack Growth Parameters of Advanced Ceramics by Constant-Stress Rate Flexural Testing at Ambient Temperature C 1421 Standard Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient Temperature Japanese Standards Association (JIS) R 1607 Testing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
... Mostovoy S. , Crosley R.B. , and Ripling E.J. , Use of Crackline Loaded Specimens for Measuring Plane Strain Fracture Toughness , J. Mater. , Vol 2 ( No. 3 ), 1967 , p 661 – 681 17.44 Sprowls D.O. and Walsh J.D. , Evaluating Stress-Corrosion Crack Propagation Rates in...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
...; however, susceptibility decreased with increasing temperature at slower crosshead speeds. This behavior was attributed to the interplay between the corrosion rate and the creep rate at the crack tip. In any case, the findings are qualitatively similar to those of Yu and Parkins ( Ref 7.32 ). Most of...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... to crack propagation and how stress concentrations affect fatigue life. It also discusses fatigue life improvement methods and design approaches. fatigue crack growth rates fatigue crack initiation fatigue failures fatigue-life prediction high-cycle fatigue low-cycle fatigue FATIGUE...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140069
EISBN: 978-1-62708-335-5
... casting and finishing characteristics of cast aluminum alloys Ratings: 1, excellent; 2, very good; 3, good; 4, fair; 5, poor. Alloy Type of casting Casting characteristics Finishing characteristics Performance characteristics Resistance to hot cracking Shrinkage Fluidity/die filling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140069
EISBN: 978-1-62708-335-5
... and finishing characteristics of cast aluminum alloys Ratings: 1, excellent; 2, very good; 3, good; 4, fair; 5, poor. Alloy Type of casting Casting characteristics Finishing characteristics Performance characteristics Resistance to hot cracking Shrinkage Fluidity/die filling capacity...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... deformation (slow crack growth or creep), are somewhat damage tolerant, and resist corrosion and oxidation. Ceramics appropriate to these applications offer a significant weight savings over currently used metals. Applications include heat exchangers, automotive engine components such as turbocharger rotors...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
... structures contain flaws. Cracks grow from an initial size, a o , to a critical size, a c , corresponding to failure as a function of the number of load cycles ( Fig. 14.17 ). The crack growth rate, da / dn , can be determined from the slope of the curve. Initially, the crack growth rate is slow but...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.t66560361
EISBN: 978-1-62708-291-4
... Abstract This chapter discusses the thermally induced changes that occur on the surface of steel exposed to different environments. It explains how oxide scales form during heat treating and how factors such as temperature, composition, and surface finish affect growth rates, grain structure...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090257
EISBN: 978-1-62708-266-2
.... Creep, which can occur at low stresses at room temperature ( Ref 9.55 ), can also produce stress reduction through relief of both residual stresses ( Ref 9.13 ) and stresses induced by an imposed strain ( Ref 9.6 , 9.11 , 9.12 , 9.55 ). A number of investigations have found strain rate to be an...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... strength assessment based on bulk creep rates and time to stress rupture. Therefore, creep life assessment may involve evaluation of both creep strength (i.e., creep rate, stress rupture) and resistance to fracture under creep conditions. Fig. 16.16 Creep crack in a turbine vane Surface scale...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630257
EISBN: 978-1-62708-270-9
... be considered a continuum (no cracks present). However, they are not valid if cracklike discontinuities exist. When a cracklike defect is present, a fracture mechanics approach is used where the rate of crack growth, labeled da/dN , is measured as a function of the K range during loading, Δ K...