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structurally dependent crack propagation

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002348
EISBN: 978-1-62708-193-1
... Abstract This article provides ASTM standard definitions for fatigue and describes the approaches that are used to design finite or infinite life, used in a complementary sense in fatigue design. It explains four distinct phases of fatigue: nucleation, structurally dependent crack propagation...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003318
EISBN: 978-1-62708-176-4
... on the tacit assumption that structural components are intrinsically flawed and capable of sustaining a considerable amount of stable crack growth before failure. The fatigue life of a component based on this defect-tolerant approach is dictated by the number of loading cycles needed to propagate a crack...
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
... life of structural components. It describes two types of tests that are normally used in combination: cycles-to-failure tests, which focus on crack initiation, and crack propagation tests, which focus on crack growth rates under cyclic load. The article examines corrosion-fatigue cracking along...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... numbering in the hundreds of thousands and millions, results in initiation and gradual propagation of a crack or cracks. Complete fracture ensues when the crack reaches a critical size that is dependent on fracture toughness. Fatigue is an important potential cause of mechanical failure, because most...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003539
EISBN: 978-1-62708-180-1
... during cyclic loading of plastics can cause thermal failure. Additionally, depending on load level and time history, fatigue cracks in polymers may not propagate steadily (with an increment of growth for each fatigue cycle) but may grow in bursts or spurts ( Ref 30 ). These spurts or discontinuous...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002351
EISBN: 978-1-62708-193-1
..., Ti-10-2-3 is heat treated 16 to 33 °C (60–100 °F) below the beta transus (744–765 °C, or 1370–1410 °F) and water quenched. Aging temperatures range from 480 to 620 °C (900–1100 °F) depending on desired strength. Source: Fatigue Databook: Light Structural Alloys, ASM International, 1995...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... is knowledgeable, the fracture appearance reveals details of the loading events that culminated in fracture. An understanding of how cracks initiate and propagate microscopically to cause bulk (macroscale) fracture is an essential part of fractography. The ability to accomplish this resides in interpretation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... surface orientation relative to component geometry and loading conditions Helps separate loading modes I, II, III Identifies macroscale ductile and brittle fracture. (see Fig. 2 ) Both flat fracture and shear lips present on fracture surface Crack propagation direction parallel to shear...
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
... to predict crack growth life under anticipated stress histories. When a structure is subjected to cyclic loads that are greater than a threshold, but not large enough to cause fracture, fatigue cracks initiate, propagate, and eventually lead to failure. In cases involving limited