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flexural load

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Published: 15 May 2022
Fig. 11 Flexural test with three-point loading. Source: Ref 8 More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001656
EISBN: 978-1-62708-219-8
... Microscope Fractographs Figure 5 shows a typical fatigue failure surface of a 24-mm diameter reinforcing bar which failed after 5.985 × 10 6 cycles of flexural loading of a reinforced concrete beam at a stress range of 214MPa tested in air. The fatigue crack initiation site, indicated by arrow...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006928
EISBN: 978-1-62708-395-9
... of plastic film and thin sheeting by a single tear method D2990 899-1,2 Tensile, compressive, and flexural creep and creep-rupture of plastics D3763 6603-2 High-speed puncture properties of plastics using load and displacement sensors D4065 6721-1 Determining and reporting dynamic mechanical...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006849
EISBN: 978-1-62708-395-9
...- and/or geometry-dependent. ASTM and ISO specimens are prepared for typical thermomechanical characterization of tensile, flexural, and impact properties; melt flow analyses; and thermal dimensional stability using deflection temperature under load (DTUL) testing. One globally recognized opportunity to compare...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... load; and the effect on a significant performance metric. Characterization of aging response of a material or product involves establishing the fundamental relationships between service and environmental exposure on the one hand and structure and property metrics on the other (Ref 4 ). This requires...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001602
EISBN: 978-1-62708-229-7
... tendency for the buckets to untwist under centrifugal load is used to force the mating faces of adjacent shrouds together and enhance damping. The tip restraint provided by the continuous shroud band also eliminates, or at least minimizes, flexural vibration. Flexural vibrations should be avoided because...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006935
EISBN: 978-1-62708-395-9
... modulus. This effect is true no matter what form of glass is used. The advantage of long glass lengths is that with higher glass loadings, some physical properties, such as tensile and flexural strength, become more related to those of the reinforcement. With thermosetting resins loaded in excess...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006933
EISBN: 978-1-62708-395-9
... an important impact on the mechanical properties of the molded article because it represents softening of the material to the point that it loses load-bearing capabilities. Fig. 8 Differential scanning calorimetry used to detect glass transitions within amorphous thermoplastic resins. The “(I...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001547
EISBN: 978-1-62708-225-9
... Abstract Life testing of cyclic loaded, miniature extension springs made of 17-7 PH stainless steel wire and AISI 302 Condition B stainless steel wire has shown end hook configuration to be a major source of weakness. To avoid cracking and subsequent fatigue failure, it was found that stress...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003542
EISBN: 978-1-62708-180-1
... influencing the strength results. For example, Fig. 3 shows four disks of MgF 2 , broken in flexure (the ring-on-ring test, in which the disk is placed on a ring and loaded to failure by pressing on the other surface with a smaller, concentric ring; equibiaxial tension is produced within the smaller ring...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003525
EISBN: 978-1-62708-180-1
..., because it represents softening of the material to the point that it loses load-bearing capabilities. Fig. 7 Differential scanning calorimetry used to detect glass transitions within amorphous thermoplastic resins. The (I) indicates that the numerical temperature was determined as the inflection...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006942
EISBN: 978-1-62708-395-9
... Fracture due to repeated application of tensile, flexural, or shear stress, such as opening and closing of a hinged part, or repeated impact leading to crack formation and growth Low adhesive bond strength for applications requiring high bond strength Thermally bonded heat seals Seals made...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006929
EISBN: 978-1-62708-395-9
..., and applied load. In the epoxy-resin composite flexural creep test, the behavior of specimens soaked for long times in water at 66 °C (151 °F) and then tested at 66 °C (151 °F) resulted in the same result as that obtained from the dry specimens. Therefore, the creep curves in this case require no additional...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001533
EISBN: 978-1-62708-225-9
... gauge at a load of 610 N and a ball diameter of 5 mm. Microhardness was determined with a microhardness gauge at a load of 0.2 N. The density of the destroyed babbit was determined by a hydrostatic weighing method on an analytical balance. The chemical composition of the alloy was determined by a method...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006865
EISBN: 978-1-62708-395-9
... as a plastic and as a fiber. Fig. 1 Typical stress–strain curve for a fiber, a plastic, and an elastomer Polymers are increasingly used in load-bearing structural applications. This article briefly reviews the mechanical behavior and fracture characteristics that discriminate structural polymers...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006940
EISBN: 978-1-62708-395-9
... criterion for fatigue resistance in engineering plastics. For example, ASTM D 7774, “Standard Test Method for Flexural Fatigue Properties of Plastics,” specifies repeated and reversed flexural stress (fatigue) as a standard methodology. Different loading conditions and specimen geometries have been used...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006930
EISBN: 978-1-62708-395-9
... ). In this test, a weight is applied to a plunger that is placed on top of a polymer melt sample. The plunger design, as well as the barrel and die design, have been standardized for this procedure. For Method A of this test method, the operator applies a specified load, most often 2.16 kg, to the plunger...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006924
EISBN: 978-1-62708-395-9
... light source allows differential photocalorimetry experiments to be conducted on ultraviolet-curable thermosets. Thermomechanical Analysis Thermomechanical analysis measures the change in sample dimension under a controlled load as the sample is heated. It is the preferred method for measuring...
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
... tests in flexural and tensile load modes at an impact rate range of 10 −4 m/s up to 8 m/s ( Ref 57 ). It was possible to conclude that FBA methods can be used effectively up to 2 m/s for bending type and up to 8 m/s for tensile-type fracture specimens when applying an appropriate damping procedure...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006911
EISBN: 978-1-62708-395-9
..., load is applied in open or closed loop control and must be measured. Loads are controlled by: Displacement through a compliant flexure or spring Current/torque–based control of a load through a ball screw or other mechanism Pressure-based control of a pneumatic actuator. Misalignments...