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chevron notch methods

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Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003311
EISBN: 978-1-62708-176-4
... on ceramics and CMCs: single edge notch bending, compact tension, double cantilever beam testing, chevron notch methods, and double torsion. It presents descriptions organized by their specimen types, and includes the advantages and disadvantages, as well as the experimental control schemes employed...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002485
EISBN: 978-1-62708-194-8
... a deformation process. Some fundamental aspects of plastic flow, flow stress, cold and hot working, workability, and formability are presented. The article describes free-surface cracking, central burst or chevron cracking, and cracking on die contact surface, as well as the microstructural effects...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003256
EISBN: 978-1-62708-176-4
... Abstract This article reviews the general mechanical properties and test methods commonly used for ceramics and three categories of polymers, namely, fibers, plastics, and elastomers. The mechanical test methods for determining the tensile strength, yield strength, yield point, and elongation...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003320
EISBN: 978-1-62708-176-4
... exists on the neutral axis, and so a mode II fatigue crack is expected to grow along this section. The specimen ( Fig. 17 ) has a chevron notch and side grooves. Figure 18(a) shows the setup for the mode II fatigue crack growth test. In this test, two identical specimens are used as a pair so that a...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... that crack length nor the specimen thickness should be less than 2.5 ( K Ic /σ Y ) 2 . Several designs of initial crack configuration are available. ASTM E 399 recommends that the notch root radius is not greater than 0.127 mm (0.005 in.) unless a chevron notch is used, in which case it may be...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002380
EISBN: 978-1-62708-193-1
... previously mentioned in this article, ASTM E 399 centers attention on the start of crack extension from a fatigue precrack. In contrast the chevron-notched specimen method makes use of a steady-state propagating crack or a crack at the initiation of a crack jump. Although both methods are based on the...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003306
EISBN: 978-1-62708-176-4
... Standards , Vol 3.01 , ASTM 16. “Standard Test Method for Plane Strain (Chevron Notch) Fracture Toughness of Metallic Materials,” E 1304, Annual Book of ASTM Standards , Vol 3.01 , ASTM 17. “Provisional Test Methods for Determination of Fracture Toughness of Advanced Ceramics at Ambient...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... Abstract This article describes testing and characterization methods of ceramics for chemical analysis, phase analysis, microstructural analysis, macroscopic property characterization, strength and proof testing, thermophysical property testing, and nondestructive evaluation techniques...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004021
EISBN: 978-1-62708-185-6
... Abstract This article provides a summary of the overall development of the finite element method (FEM) and its contribution to the materials forming industry. It presents an overview of FEM methodologies and applications in the order of their usage in typical manufacturing (bulk forming process...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005539
EISBN: 978-1-62708-197-9
... shafts, are considered critical for safe operation of the vehicle and must be free of defects. During the mid-1960s, automotive companies encountered severe axleshaft breakage problems. In addition to the obvious visible external defects, internal chevron cracks were also present ( Ref 23 ). The problem...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003312
EISBN: 978-1-62708-176-4
... Y. , V-Notch Technique for Single-Edge Notched Beam and Chevron Notch Methods , J. Am. Ceram. Soc. , Vol 73 ( No. 11 ), 1990 , p 3522 – 3523 10.1111/j.1151-2916.1990.tb06490.x 27. Kübler J. , Fracture Toughness of Ceramics Using the SEVNB Method , Ceram. Eng. Sci. Proc...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003258
EISBN: 978-1-62708-176-4
...) tensile stresses. Center-burst (chevron) cracking of solid rods in drawing and extrusion, plane-strain drawing of sheet or plate, and tube drawing or spinning are due to the high hydrostatic tensile stress component at the centerline of the workpiece during plastic deformation. Another example of the...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003437
EISBN: 978-1-62708-195-5
...,” E 9, Annual Book of ASTM Standards , ASTM 11. “Standard Test Method for Plane-Strain Fracture Toughness of Metallic Materials,” E 399, Annual Book of ASTM Standards , ASTM 12. “Standard Test Method for Plane-Strain (Chevron-Notch) Fracture Toughness of Metallic Materials,” E1304...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006583
EISBN: 978-1-62708-290-7
... followed the guidelines of the international standard ISO 28079. To calculate the fracture toughness, the formula proposed by Shetty et al. ( Ref 29 ) was used, given that it is in good agreement with the fracture toughness determined by using the three-point bending test of chevron-notched specimens ( Ref...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003063
EISBN: 978-1-62708-200-6
... Abstract Ceramic-matrix composites (CMCs) are being developed for a number of high-temperature and high-performance applications in industrial, aerospace, and energy conservation sectors. This article focuses on processing, fabrication, testing, and characterization methods of CMCs, namely...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003720
EISBN: 978-1-62708-177-1
..., quench cracks Radial marks and chevrons (V-shape) • Point toward crack initiation site • Show crack propagation direction Crack arrest lines (monotonic loading) (U-shape) • Lines point in direction of crack propagation • Indicate incomplete constraint Crack arrest lines (cyclic loading) (beach...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003317
EISBN: 978-1-62708-176-4
... techniques. The method by which a notch is machined depends on the specimen material and the desired notch root radius (ρ). Sawcutting is the easiest method but is generally acceptable only for aluminum alloys. For a notch root radius of ρ ≤ 0.25 mm (0.010 in.) in aluminum alloys, milling or broaching is...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006441
EISBN: 978-1-62708-190-0
... effects of supports, bends, insulation, and other features; and demonstrations in field trials ( Ref 26 , 27 ). This work was supported by United Kingdom and European Union public funding and by partnership with several industrial organizations, including TWI, Shell, BP, Exxon, Chevron, and ICI...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006473
EISBN: 978-1-62708-190-0
... reference standard, most commonly a flat-bottomed or side-drilled hole (FBH, SDH) or a simple saw cut or notch. In recent years, more quantitative defect-sizing methods have been implemented, such as using time-of-flight diffraction for cracks ( Ref 9 ) and both amplitude and response analysis for voids and...
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
... Abstract This article describes three design-life methods or philosophies of fatigue, namely, infinite-life, finite-life, and damage tolerant. It outlines the three stages in the process of fatigue fracture: the initial fatigue damage leading to crack initiation, progressive cyclic growth of...