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Compression damage

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... and manufacturing processes, avoiding geometries and features that concentrate strains, preventing or removing surface damage, and by inducing compressive mean stresses that prolong fatigue life. It also discusses the use of property conditioning and restoration treatments, the benefits of interference fits...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870179
EISBN: 978-1-62708-344-7
...Abstract Abstract This chapter describes how notches affect the load-carrying capacity and fatigue life of materials under cyclic loads. It explains that stresses and strains can be three to four times higher in the vicinity of a notch, greatly accelerating fatigue damage. It discusses the use...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
...Abstract Abstract This chapter examines the phenomena of deformation and fracture in metals, providing readers with an understanding of why it occurs and how it can be prevented. It begins with a detailed review of tension and compression stress-strain curves, explaining how they are produced...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060001
EISBN: 978-1-62708-343-0
... increase somewhat. Only tensile creep rate was measured and compared to the monotonic rate at a given stress. At that time, there was little concern for compressive creep damage, because the fledgling Time- and Cycle-Fraction Rule for creep-fatigue interaction, proposed two years earlier by Taira ( Ref...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
...) Omits effect of compressive period Summary of creep-fatigue life prediction models Table A8.1 Summary of creep-fatigue life prediction models Type Acronym Title Ref A: Life or damage fraction rules A LCR Linear Creep-Rupture Damage Rule 8.34 A LCF Linear creep...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... Impact damage in carbon/epoxy laminate. Source: Ref 7 Fig. 26 Static strength loss due to impact damage. RT, room temperature. Source: Ref 7 Fig. 27 Relative severity of defects on compression fatigue strength. Source: Ref 7 Fig. 28 Impact properties of various...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060043
EISBN: 978-1-62708-343-0
... (time-dependent) could occur in the tensile half as well as in the compressive half, the combinations of strain reversal reduced to four. Each combination could result in a different mechanism of cyclic inelastic strain damage. As previously noted, the four inelastic strain-range components...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... that lead to the weakness of aramid fibers in buckling also make them very tough. During failure, the widespread bending, buckling, and other internal damage to the fibers absorb a great deal of energy. The fibrillar structure and compressive behavior of aramid fibers contribute to composites that are less...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... cyclic loading can lead to delamination, the primary failure mode of most composites, and describes some of the methods that have been developed to improve delamination resistance, assess damage tolerance, determine residual strength, and predict failure modes. composite laminate damage tolerance...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780417
EISBN: 978-1-62708-281-5
... angled fracture surface; and a neutral axis or line separating the two regions. Fig. 23 Examples of translaminar compression fractures. (a) Translaminar compression fracture with extensive postfailure damage to fiber ends. 750×. (b) Translaminar compression-generated fiber kink in graphite/epoxy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... Standard E 1150 reads as follows: “The process of progressive localized permanent structural damage occurring in a material subjected to conditions that produce fluctuating stresses and strains at some point or points and that may culminate in cracks or complete fracture after a sufficient number...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
...: Ref 7.1 Fig. 7.3 Several cases of biaxial loading discussed in connection with analysis by strain-range partitioning. (a) Dominant axial stress with small transverse tensile or compressive stress. (b) Transverse stress of substantial magnitude relative to dominant axial stress. (c) Equal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870489
EISBN: 978-1-62708-314-0
... applications because of its low dielectric constant; however, it is very expensive. Aramid fiber (such as Kevlar) is an organic fiber that has a low density and is extremely tough, exhibiting excellent damage tolerance. It has a high tensile strength but performs poorly in compression. It is also sensitive...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870001
EISBN: 978-1-62708-314-0
... and the compression buckling strength. If it is large enough, it can grow under fatigue loading. Fig. 1.24 Delaminations and matrix cracking in polymer matrix composite due to impact damage Typically, damage tolerance is a resin-dominated property. The selection of a toughened resin can significantly...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... stress-strain response at circumferential weld Fig. 10.18 Comparison of Damage Curve Approach with Linear Damage Rule Fig. 10.17 Cross section of a thin-walled pressure vessel at a circumferential weld. HAZ, heat-affected zone Fig. 10.20 Typical louvered-constructed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2012
DOI: 10.31399/asm.tb.lmub.t53550385
EISBN: 978-1-62708-307-2
.... The damage may appear as only a small indentation on the surface but can propagate through the laminates, forming a complex network of delaminations and matrix cracks. Depending on the size of the delamination, it can reduce the static and fatigue strength and the compression buckling strength...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490111
EISBN: 978-1-62708-340-9
.... Fig. 4.6. Stress distributions due to (a) circular hole and (b) elliptical hole ( Ref 3 ). Fig. 4.14. Effects of hold time and tensile vs compressive hold on cyclic endurance life of 1Cr-Mo-V rotor steel at 565 °C (1050 °F) ( Ref 29 ). Fig. 4.15. Types of LCF cycles employed...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630071
EISBN: 978-1-62708-270-9
... diagrams, which are simplified models of complex stress systems. Free-body diagrams of shafts in the pure types of loading (tension, torsion, and compression) are the simplest; they then can be related to more complex types of loading. This chapter discusses the principles of these simplest loading systems...
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
... Cumulative Damage 14.5 Fatigue Crack Nucleation and Growth 14.6 Fatigue Crack Propagation 14.7 Crack Closure 14.8 Geometrical Stress Concentrations 14.9 Manufacturing Stress Concentrations 14.10 Environmental Effects 14.11 Fatigue Life Improvement 14.12 Fatigue Design Methodologies...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... to rub against each other on the compressive part of the stress cycle (if there is one) as the crack gets deeper, damaging fracture-surface features. Beach marks may not be present if the part was operated continuously, or with only brief interruptions in service. Because laboratory fatigue testing...