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notch impact toughness

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001055
EISBN: 978-1-62708-214-3
... fractographic, metallographic, chemical, and mechanical property (tension and impact toughness) analyses were conducted. On the basis of the tests and observations, it was concluded that the failure was the combined result of poor notch toughness (impact) properties of the steel, high stresses in the joint area...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001353
EISBN: 978-1-62708-215-0
... tensile properties of the forging material were found to be satisfactory, the notch sensitivity of the material (i.e., its toughness) was extremely poor, as indicated by Charpy impact testing (3.9 J, or 2.9 ft . lbf). The coarse grain structure of the forging, accompanied by inferior chemical composition...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001079
EISBN: 978-1-62708-214-3
... actual mechanical properties and to determine the metallurgical cause of the observed indications. Samples were examined in a scanning electron microscope and subjected to chemical analysis and several mechanical property tests, including tensile, Charpy V-notch impact, and fracture toughness. The...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001196
EISBN: 978-1-62708-224-2
.... The metallographic examination revealed a rather coarse bainitic structure as shown in Fig. 2 , which is an indication that the resistance of the steel to withstand shock loads was low. Shock loads are unavoidable in the operation of a fork lifter. Impact tests (Charpy-V-Notch) on test specimens with...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001780
EISBN: 978-1-62708-241-9
... ] Wt.% sulfur K Q (ksi-√inch) 0.020 45.4 0.023 42.5 0.025 39.9 0.026 39.9 0.030 39.0 0.033 38.5 Notch toughness characterizes a material’s ability to absorb energy during high strain rate loading (i.e., impact). The Charpy V-Notch (CVN) impact test has become the...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001591
EISBN: 978-1-62708-227-3
... steel is absent in the modern steel and the volume fraction of both sulfides and silicates is greater than in the modern steel. The lack of cleanliness of the steel had a deleterious effect on the mechanical properties, particularly the notch toughness as demonstrated by Charpy Impact Tests. These...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001544
EISBN: 978-1-62708-219-8
.... While the material met chemical and mechanical property requirements, tests showed it had low fracture toughness and critical-sized flaws oriented normal to the principal stress in the failed junction piece. Fabrication procedures resulted in high residual stresses and a metallurgical notch at the...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... specimen loaded slowly and under controlled conditions to fracture. Notch toughness represents the ability of a material to absorb energy and is determined under impact loading in the presence of a notch. Notch toughness is measured by using a variety of specimens, such as the Charpy V-notch impact...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091362
EISBN: 978-1-62708-220-4
... 124 134 188 Sound circumferential weld 20 106 126 85 These results confirmed suspicions that failure was due to excessive amounts of nitrogen, carbon, and oxygen. To characterize the condition of the vessel further, Charpy V-notch impact tests were run on the unaffected base metal, the...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001768
EISBN: 978-1-62708-241-9
... were prepared in longitudinal direction and notched transverse to the plate thickness. Five samples were tested for each test condition and the average of three closest values was reported in Table 4 . Table 4 Charpy impact toughness of the cracked splice plate Sample type Location...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001150
EISBN: 978-1-62708-235-8
... fabricated from plate steels with significantly different fracture toughnesses. To confirm this initial conclusion, Charpy impact specimens were removed from a number of the bars with the notch aligned on a plane parallel to the fracture face. Results of the impact testing, presented in Table 1 , showed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001637
EISBN: 978-1-62708-221-1
... Program, Aug 2002 . 4. Australian Standard AS 1544.2-1989, “Methods for Impact Tests on Metals, Charpy V-Notch,” Standards Australia, 1989 . Selected Reference • Warke W. R. , Stress-Corrosion Cracking , Failure Analysis and Prevention , Vol 11 , ASM Handbook , ASM...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001752
EISBN: 978-1-62708-241-9
... ultra-low sulfur AMS 6414 steels. aircraft crankshafts fatigue fracture forging defects low-sulfur steel planar dimpled facets tension-to-tension fatigue testing notch impact toughness AMS 6414 (low-alloy steel) UNS G43400 References 1. Teledyne...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001550
EISBN: 978-1-62708-228-0
... would have tended to lower this and improve toughness, it is clear that the original material had poor impact properties and a high DBTT. Fig. 5 Charpy V-notch impact energy data for pad and shell plate (mean values). It is clear that the cause of the tank failure was brittle fracture...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001035
EISBN: 978-1-62708-214-3
... outer segment and the unhardened inner core of the axle, subsized Charpy V-notch test coupons were prepared from both areas. Because the hardened outer surface layer was only about 6.4 mm (0.25 in.) thick, careful machining was required. After impact testing at room temperature, the appearance and...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001261
EISBN: 978-1-62708-219-8
... Tensile Strength Elongation Reduction in Area upper lower L O = 5d kp/mm 2 kp/mm 2 kp/mm 2 % % 21,8 21,7 35,3 35,5 70 23,7 23,0 35,5 38,4 70 Figure 5 shows notch impact toughness as a function of testing temperature of ISO-V-notch specimens. The values at + 40...
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
... crack lengths of about 3 mm, or 0.12 in.) were done with through cracks in precracked specimens, such as single-edge-notched specimens in three- and four-point bending or tapered double-cantilever beam specimens, or compact tension specimens. Crack lengths were monitored optically or by measuring the...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003526
EISBN: 978-1-62708-180-1
.... Fig. 3 Example of a statically indeterminate structure. Unlike the simple cantilever in Fig. 2 , there is no closed formed solution in classical beam theory for a supported cantilever as shown in (a) for deflection of a beam (top left) or a notched beam (top right). Results from finite element...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006773
EISBN: 978-1-62708-295-2
... in Fig. 2 , there is no closed-form solution in classical beam theory for a supported cantilever, as shown in (a) for deflection of a beam (top left), or a notched beam (top right). Results from finite-element analysis are shown in (b) for the supported beam (bottom left) and the notched beam...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001531
EISBN: 978-1-62708-231-0
... 12.5 × 25 × 120 mm, and a notch with depth of 1.5 mm and radius of 0.2 mm, on an Instron tester and an Amsler HFP5100 high frequency fatigue tester, respectively. The impact toughness, a k , and dynamic fracture toughness, K ID , were measured using standard Charpy U-notch and precracked Charpy...