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fracture testing

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Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006910
EISBN: 978-1-62708-395-9
... to fracture (glassy polymers). This article provides an overview of historical development of fracture behavior in polymers. It discusses the processes involved in three fracture test methods for polymers, namely linear elastic fracture mechanics, elastic-plastic fracture mechanics, and post-yield fracture...
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Published: 01 June 2019
Fig. 2 Crack-propagation direction and origin identified on fracture test component. (a) Optical micrograph. 0.4x. Crack origin is indicated by circled area. (b) Scanning electron micrograph of the circled area shown in (a). 5000x. Note river marks that coalesce in the direction of overall More
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Published: 01 January 2002
Fig. 55 Macroscale fracture surface of torsion-test specimen, where testing was done so as to avoid axial stresses during testing. Source: Ref 42 More
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Published: 15 January 2021
Fig. 55 Macroscale fracture surface of torsion-test specimen, where testing was done to avoid axial stresses during testing. Source: Ref 43 More
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Published: 30 August 2021
Fig. 71 Magnetic-particle testing results from near fracture area 1. Arrows indicate crack locations More
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Published: 30 August 2021
Fig. 72 Magnetic-particle testing results from between fracture areas 2 and 3. Arrows indicate crack locations More
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Published: 30 August 2021
Fig. 73 Magnetic-particle testing results from near fracture area 3. Arrows indicate crack locations More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048498
EISBN: 978-1-62708-234-1
... Abstract A graphite-epoxy tapered-box structure, which consisted of two honeycomb skin panels fastened to a spanwise spar with intermediate chordwise ribs, fractured during testing. Hinge-line deflection of the front spar was revealed. Through-thickness cracks in the forward and trailing edges...
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Published: 01 January 2002
Fig. 31 Fracture surface of notched tension test of alloy steel tested at 0 °C (32 °F). Fibrous overload fracture surface exhibits fine circumferential ridges. Similar markings have been erroneously identified as fatigue beach marks. Source: Ref 16 More
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Published: 15 January 2021
Fig. 31 Fracture surface of notched tension test of alloy steel tested at 0 °C (32 °F). Fibrous overload fracture surface exhibits fine circumferential ridges. Similar markings have been erroneously identified as fatigue beach marks. Source: Ref 16 More
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Published: 01 December 1992
Fig. 9 Dynamic-tear test results for the fractured flange plate. The testing was performed at the U.S. Naval Research Laboratory. Note that the onset of elastic-plastic behavior (in inflection point) occurred at 50°C (120°F) for the midthickness testing and at 15°C (60°F) for the surface More
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Published: 01 January 2002
Fig. 10 Fracture surface of mechanical test specimen from piping cross. Fracture is intergranular. The coarse grain size of the material is evident. Note 0.75-in. scale. More
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Published: 01 June 2019
Fig. 1 Fracture surface of mechanical test specimen from piping cross. Fracture is intergranular. The coarse grain size of the material is evident. Note 0.75-in. scale. More
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Published: 30 August 2021
Fig. 27 Fracture surface of mechanical test specimen from piping cross. Fracture is intergranular. The coarse grain size of the material is evident (0.75 in. scale) More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0090965
EISBN: 978-1-62708-221-1
... for a specimen removed adjacent to the fracture. Test results from the specimen were 470 MPa (68 ksi) tensile strength, 370 MPa (54 ksi) yield strength, 1.5% elongation, and 1% reduction in area. The near-surface tensile strength and elongation were far below requirements, but the measured core hardness...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001054
EISBN: 978-1-62708-214-3
... at the bond. The failures appeared to be predominantly located between the silver layer and the uranium substrate. Normal fracture location of specimens taken from similar components was at the silver/silver bond interface. Laboratory testing revealed that the uranium/silver joint was susceptible to premature...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0048795
EISBN: 978-1-62708-220-4
... Abstract A large pressure vessel designed for use in an ammonia plant failed during hydrostatic testing. It was fabricated from ten Mn-Cr-Ni-Mo-V steel plates which were rolled and welded to form ten cylindrical shell sections and three forgings of similar composition. The fracture surfaces...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001111
EISBN: 978-1-62708-214-3
... fabricated from this grade of steel undergo frequent inspection and that stringent test requirements be imposed as a condition of use in non-redundant main load-carrying components. Boxbeams Segregations Weld defects ASTM A517 grade H UNS K11646 Joining-related failures Brittle fracture...
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Published: 01 January 2002
Fig. 34 Microscale quasi-cleavage fracture in an O1 tool steel tested at room temperature. Predominantly cleavage cracking with patches and ribbons of microvoid coalescence. Source: Ref 35 More
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Published: 01 January 2002
Fig. 28 Schematic of fracture surface regions in cylindrical tension-test specimens. (a) Surface from cone portion of fractured unnotched tensile specimen. (b) Surface of fractured notched specimen. Unlike the fracture surface for an unnotched specimen, the fracture surface for the notched More