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linear elastic fracture toughness

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Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003513
EISBN: 978-1-62708-180-1
... of the component, and K mat is the linear elastic fracture toughness of the component. ( K mat , the linear elastic fracture toughness, is the value of K I at fracture and, for a given material condition, is a function of thickness and temperature. The lower bound to K mat , for a given temperature...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
.... The pre-existing crack morphology was intergranular fracture in the axles studied. An estimate of the force required to cause the axle fracture can be made using the measured crack size, fracture toughness determined from these tests, and linear elastic fracture mechanics. The axle can be reliably said...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... of fracture mechanics. The fracture mechanics approach is an important part of stress analysis at the tips of sharp cracks or discontinuities. The article reviews fracture mechanics concepts, including linear elastic fracture mechanics, elastic-plastic fracture mechanics, and subcritical fracture mechanics...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... mechanics analysis linear elastic fracture mechanics analysis stress analysis equations stress analysis THE STRESSES acting on a component may cause unacceptable deformation, cracking, or fracture. By definition, after a stress-related failure has occurred, it is a given that the stresses reached...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001715
EISBN: 978-1-62708-219-8
... (plastic collapse), by linear elastic fracture, or by some combination of these limits. The stable crack growth region on the sample is used as a final or critical flaw size. In the R6 method, two limits of structural integrity are considered: plastic collapse and linear elastic failure. Between...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003541
EISBN: 978-1-62708-180-1
... , at the crack tip, reaching a critical value, K Ic , for the plane-strain fracture toughness, which is considered to be a material property ( Ref 22 ). Linear elastic fracture mechanics properties per ASTM D5045 are appropriate for highly cross-linked thermosets or glassy thermoplastics incapable...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
.... The article reviews fatigue assessment methods incorporated in international design and post construction codes and standards, with special emphasis on evaluating welds. Specifically, the stress-life approach, the strain-life approach, and the fracture mechanics (crack growth) approach are described...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.9781627081801
EISBN: 978-1-62708-180-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003512
EISBN: 978-1-62708-180-1
... the strength-of-materials approach and the engineering design regime based on a factor of safety. Fig. 3 A general plot of the ratios of the toughness and stress showing the relationship between linear elastic fracture mechanics and strength of materials as it relates to fracture and structural...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006802
EISBN: 978-1-62708-329-4
..., and the corrosion resistance of materials. These are briefly discussed in this section. Strength of Materials Linear Elastic Fracture Mechanics Damage-Tolerance Approach Elevated-Temperature Concern Corrosion Allowances With the advent of strict quality-assurance controls and nondestructive...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
... hole, and r is the radius of the bore hole used to normalize the distance. Source: Ref 13 Fig. 9 Results of elastic-plastic analysis showing the hoop stress range distribution along several directions on plane A. Source: Ref 13 Fracture Mechanics Analysis Figure 10 shows...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001149
EISBN: 978-1-62708-232-7
... the stiffener rings. This behavior is a function of the stress field and the fracture toughness of the material. The elastically calculated stresses varied from far above yield at and near the stiffener rings to well below yield at midspan. Temper embrittlement associated with elevated temperature operation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
..., and stress history on the life of a component. For fracture mechanics methods, material behavior is described by fracture toughness and crack growth rate data, and geometry is defined through a dimensionless β factor. For traditional fatigue methods such as the stress-life method, an S - N curve, which...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001136
EISBN: 978-1-62708-229-7
.... For the fracture toughness it was presumed that COD fracture toughness tests (in accordance with BS-5762, 1979 2 ) should be undertaken since the low carbon, medium strength steel may be expected to behaved plastically at ambient temperatures. Unfortunately the steel exhibited elastic brittle behavior...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... data under linear-elastic conditions can be used to predict the behavior of the component under elastic-plastic and fully plastic conditions and vice versa ( Ref 11 , 12 , 31 ). Figure 14 shows the crack configurations used in the fracture mechanics analysis. These configurations have been...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001845
EISBN: 978-1-62708-241-9
... of elasticity 1.30 × 10 5 MPa Fracture load ≥9.0 kN Thermal conductivity 250 W/m-K Sliding load 1.5 kN Coefficient of thermal expansion (20–300 °C) 1.7 × 10 –5 K Tightening torque 28 N m Fig. 1 General view of the steady clamps analyzed: ( a ) views in different directions; ( b...
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
.... 43 Fatigue crack propagation rate ( da / dN ) versus stress-intensity factor range (Δ K ). Fatigue striations may be present on the fracture surface for loading in the linear portion of the curve (Paris law region) and permit analytical estimations of life to fracture. Just as fracture toughness...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
..., polytrifluorochloroethylene; HDPE, high-density polyethylene; PET, polyethylene terephthalate; S , ultimate tensile strength; e , elongation to break; E , elastic modulus; K Ic , fracture toughness; f ab , the ratio of volume of material removed as wear debris to the volume of the wear groove The maxima...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003564
EISBN: 978-1-62708-180-1
... Density, g/cm 3 Elastic modulus, GPa (10 6 psi) Hardness, kg/mm 2 Toughness, MPa m (ksi in. ) Failure mode Silicon nitride 3.2 315 (46) 1400–1800 4–7 (3.6–6.4) Spalling Silicon carbide 3.1 420 (61) 2000–2400 2–4 (1.8–3.6) Fracture Alumina 3.9 390 (57) 1800...