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crack propagation testing

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Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003668
EISBN: 978-1-62708-182-5
... potential on corrosion-fatigue crack propagation in several steels exposed to seawater or 3% sodium chloride at constant Δ K between 20 and 40 MPa m (18 and 36 ksi in . ). Temperature: 23 °C (73 °F); frequency: 0.1 Hz; stress ratio: R = 0.1 Material tested Symbol Yield strength...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002362
EISBN: 978-1-62708-193-1
... with it. It provides information on the fundamental aspects of environmental crack advancement in general. The article explains the concepts and role of environmentally assisted crack growth in corrosion fatigue. It also discusses the fatigue test methods, including crack initiation testing and crack propagation...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002357
EISBN: 978-1-62708-193-1
... Ferritic Steel under Closure-Free Testing Conditions, Part II: Hysteresis in Near-Threshold Fatigue Crack Propagation—An Experimental Assessment , ASTM J. Test. Eval. , Vol 20 ( No. 3 ), May 1992 , p 168 – 179 10.1520/JTE11710J 39. Gates R.S. , Fatigue Crack Growth in C-Mn Steel Plate...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009217
EISBN: 978-1-62708-176-4
... Abstract Fatigue crack growth rate testing and data analysis are performed to characterize the crack propagation resistance of material environment combinations in order to predict crack growth life under anticipated stress histories. This article presents analyses performed on the numerical...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
..., extrusions/intrusions, grain boundaries, inclusions, and porosity ( Ref 9 ). During fatigue testing, the dislocations can move to the specimen surface and form fine lines. These lines are called persistent slip bands. The stage I crack propagates initially along these slip bands, and the fracture surface...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003666
EISBN: 978-1-62708-182-5
... and distribution of cracks, can impair the precision of results obtained by either constant-strain or constant-load tests. When isolated stress-corrosion cracks propagate in a specimen stressed by either method, the average tensile stress on the net section increases rapidly until the notch fracture strength...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002417
EISBN: 978-1-62708-193-1
... micromechanisms that may occur during cyclic fatigue crack growth in ceramics and ceramic-matrix composites. Source: Advanced Materials & Processes , Aug 1993 Fig. 1 Variation of fatigue crack propagation rate, da / dN , with applied stress intensity range. Δ K , for MgO-PSZ ceramic, tested...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003313
EISBN: 978-1-62708-176-4
... Abstract The separation of the fatigue process into crack initiation and propagation phases has been an important and useful advance in engineering. The combined approach of strain-control testing and the development fracture mechanics of fatigue crack growth rates is a key advance that allows...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... . Variables that influence fatigue-crack-growth behavior are stress ratio, loading frequency (not a factor in benign environments), material chemistry, heat treatment, material anisotropy, sample orientation, test temperature, and environment. Fatigue crack propagation behavior of metals generally can...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... methods, it has been shown in certain materials that a mechanical step or jump can occur during crack propagation. In fact, in one test pings could be heard with the unaided ear ( Ref 12 ). In this test it was demonstrated that the action of both stress and corrosion is required for crack propagation...