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dimple rupture

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630101
EISBN: 978-1-62708-270-9
... of an electron microscope: this is termed a dimpled-rupture fracture surface, as shown in Fig. 6 . Examination of these dimples is exceedingly useful in studying fractures because the dimples are extremely sensitive to the direction of the stresses that formed them. Fig. 6 Typical dimpled-rupture...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270141
EISBN: 978-1-62708-301-0
... surface was observed in the SEM. Well-defined dimpled rupture was seen all over the cross section, indicating that the failure was due to overload ( Fig. CH32.2 ). Fig. CH32.2 SEM fractograph of the fracture surface showing dimpled rupture The preceding observations show that the blade had...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
..., on each side of the fracture face. This is the “dimpled rupture” fracture surface that is visible by electron microscope examination, as shown in Chapter 9, “Ductile Fracture,” in this book. Note that the shear deformation discussed herein refers to slip or sliding on a microscopic or submicroscopic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270165
EISBN: 978-1-62708-301-0
.... Under the SEM, the flat region showed well-defined, uniformly spaced fatigue striations ( Fig. CH43.5 ). The slant region showed dimple rupture ( Fig. CH43.6 ). Fig. CH43.4 SEM fractograph showing the slow crack growth (flat) and overload (slant) regions Fig. CH43.5 Well-defined...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... that reveals the shapes of part of the individual grains. Original magnification: 2000×. Source: Ref 10 A fracture is referred to as decohesive rupture when it exhibits little or no bulk plastic deformation and does not occur by dimple rupture, cleavage, or fatigue. This type of fracture is generally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270120
EISBN: 978-1-62708-301-0
...) shear lip A portion of the strut containing the region A was cut, ultrasonically cleaned, and examined in a SEM. Striations typical of fatigue were seen in zone (a) ( Fig. CH23.4 ). The other two zones, (b) and (c), showed dimpled rupture typical of tensile overload. The striations in zone...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270102
EISBN: 978-1-62708-301-0
... with an average spacing of 2.5 μm ( Fig. CH17.11 ). At other places on the same fracture surface, striations were also observed with an average spacing of 0.4 μm. The bolts with double fracture origins showed dimple rupture at the central region ( Fig. CH17.12 ). In each assembly, one or two bolts showed mixed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270180
EISBN: 978-1-62708-301-0
... marks ( Fig. CH49.2 ). The rest of the fracture surface showed dimples ( Fig. CH49.3 ). Fig. CH49.2 Striations in the fatigue region Fig. CH49.3 Final fracture region showing dimpled rupture The studs failed due to fatigue crack initiation and progression during each loading...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270162
EISBN: 978-1-62708-301-0
.... The fractographs are shown in Fig. CH42.6 to CH42.8 . The fracture surface on the left-side gusset plate indicated cleavage ( Fig. CH42.6 ), while on the right side, dimpled rupture was observed ( Fig. CH42.7 ). This also corresponded to a lower hardness and better ductility compared with the left side...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.9781627082709
EISBN: 978-1-62708-270-9
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.9781627082563
EISBN: 978-1-62708-256-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2007
DOI: 10.31399/asm.tb.htcma.t52080379
EISBN: 978-1-62708-304-1
... L. and Messler R.W. , Stress Relaxation Study of HAZ Reheat Cracking in Type 347 Stainless Steel , Weld. J. , 2000 , p 137s 27. Christoffel R.J. , Notch-Rupture Strength of Type 347 HAZ , Weld. J. , July 1960 , p 315 28. Truman R.J. and Kirkby H.W...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630081
EISBN: 978-1-62708-270-9
... opposite the origin. The interior, or core, is likely to have a ductile fracture with dimpled rupture on the microscale. Fig. 5 Surface of a torsional fatigue crack that caused brittle fracture of the case of an induction-hardened axle of 1541 steel. The fatigue crack originated (arrow...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.horfi.t51180151
EISBN: 978-1-62708-256-3
... weld defect. Note also a fatigue fracture in the upper right corner. Radial ridges emanate from the origin in a fan-shaped pattern. Fig. 6 Typical dimpled rupture fracture surface of a ductile fracture viewed at a magnification of 2000× and at an angle of about 40–50° to the fracture surface...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... surface. The fracture topography at the origin was intergranular. The dimensions of the origin were 0.5 mm wide by 0.19 mm deep (0.02 in. by 0.0075 in.). Away from the origin was a static rupture area, which was characterized by dimples. Approximately 85% across the thickness, an arrest mark was present...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... of safety it is often not as serious (or as sudden) as fracture, because wear is usually anticipated. Failures can also be induced by service temperatures. Examples include creep deformation and rupture at elevated temperature, or the brittle fracture of body-centered cubic (bcc) metals at low temperatures...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... and what they reveal about the load-carrying characteristics of engineering materials. It then discusses the use of failure criteria and the determination of yielding and fracture limits. It goes on to describe the mechanisms and appearances of brittle and ductile fractures and stress rupture, providing...
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
.... Ductile fractures are transgranular and are typically accompanied by more pronounced elongation and necking. Transgranular creep ruptures, which generally result from high applied stresses, fail by a void-forming process similar to that of microvoid coalescence in room-temperature dimple rupture. Some...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... experience and understanding of the four basic modes of failure: dimpled rupture, cleavage, brittle intergranular, and fatigue. From these four basic modes, the detailed mode can be examined, and the failure mechanism is fit to the evidence. A greater discussion of the mechanisms of failure is found later...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.9781627083096
EISBN: 978-1-62708-309-6