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hat-shaped specimen

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Published: 01 January 2000
Fig. 7 Test setup for shear testing with hat-shaped specimen. (a) Specimen placed between input and output bar. (b) Detail of pulse shaper More
Image
Published: 01 January 2000
Fig. 8 Hat-shaped specimen to produce shear deformation under axial compression loading. All dimensions are in millimeters. More
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003295
EISBN: 978-1-62708-176-4
...-walled cylinder testing, and pressure-shear plate impact testing. high strain rate shear test high strain rate torsion testing double-notch shear testing punch loading drop-weight compression shear testing thick-walled cylinder testing pressure-shear plate impact testing hat-shaped specimen...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006127
EISBN: 978-1-62708-175-7
... under service loads. Until about the year 2000, tensile yield strengths of HATS were not reported in the literature because of the insufficient reproducibility of the data from standardized tensile testing specimens that fracture in the shoulders before plastic deformation commences. Hard and low...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003040
EISBN: 978-1-62708-200-6
... programs have been carried out in the Drexel laboratory and by Atlantic Research Corporation. Examples of these structures are I-beams, hat sections, rocket motor exit cones, and marine propellers. Fig. 6 Net-shape structures produced by three-dimensional braiding Properties of Braided...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003758
EISBN: 978-1-62708-177-1
... processing algorithms manual stereological analysis quantitative image analysis shape quantification spatial distribution specimen preparation stereological parameters three-dimensional analysis PROGRESS in production technology and materials science has forced extensive research...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002416
EISBN: 978-1-62708-193-1
... strength and tensile strength. The article reviews low velocity impacts in aircraft structures in terms of resin toughness, laminate thickness, specimen size and impactor mass, and post-impact fatigue. It explains the tension strength analysis, such as linear elastic fracture mechanics and R-curve methods...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003293
EISBN: 978-1-62708-176-4
... in the article “Low Velocity Impact Testing.” the strains that can be produced by the plate impact experiments are, however, limited. To obtain large strains at high strain rates, one may employ hat-shaped experiments and cylinder-collapse tests as described in the article “High Strain Rate Shear Testing...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003296
EISBN: 978-1-62708-176-4
... without a concomitant decrease in the specimen and bar diameters. The use of small diameter bars (<6 mm) to achieve higher strain rates is a common practice in split-Hopkinson pressure bar testing ( Ref 3 ). Pulse Shaping Because the value of t from Eq 17 has a practical minimum...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005147
EISBN: 978-1-62708-186-3
... and m -value in the superplastic range. Because of the sigmoidal shape of the stress-strain-rate curves, m -values exhibit a maximum at an intermediate strain-rate, and the m -peak shifts to higher strain rates with decreasing grain size. In titanium and aluminum alloys under optimal temperature...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003425
EISBN: 978-1-62708-195-5
... to research potentially lower-cost dry TP processing options. True (or dry) thermoplastics (TTPs), in which there are no chemical changes during processing, can be rapidly heated, remelted, shaped, consolidated, and cooled. These relatively rate-insensitive process parameters lend themselves to innovative...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006549
EISBN: 978-1-62708-290-7
... the required layer geometry. A single layer can be used to selectively add material for dimensional restoration, and many subsequent layers can be used to build three-dimensional shapes. However, shapes produced by using DED are considered near-net shape, because postprocess machining is almost always used...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003294
EISBN: 978-1-62708-176-4
... and an elastic-plastic model with work hardening, were able to correctly simulate the final shapes and final lengths of Taylor test specimens of several metallic alloys at ambient temperatures. Their results showed good correlation between the dynamic yield strength and the fractional change in rod length...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.9781627081863
EISBN: 978-1-62708-186-3
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005155
EISBN: 978-1-62708-186-3
.... A typical sheet-forming principal mode of deformation is bending. The burnishing. The smoothing of one surface operation where a top-hat section is formed equipment used for this operation is com- through frictional contact with another sur- from a at sheet by pushing a long U-shaped monly referred...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003427
EISBN: 978-1-62708-195-5
.... The Lockbolt requires a hat-shaped collar that incorporates a flange to spread the high bearing loads during installation. The Lockbolt pin designed for use in composite structure has six annular grooves as opposed to five for metal structure. Eddie-Bolt Fasteners Although Eddie-Bolt fasteners...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005131
EISBN: 978-1-62708-186-3
... Abstract Springback refers to the elastically driven change of shape that occurs after deforming a body and then releasing it. This article presents an introduction to the concepts of springback simulation as well as recommendations for its practice in a metal forming setting of thin beams...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.9781627081993
EISBN: 978-1-62708-199-3
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005540
EISBN: 978-1-62708-197-9
... operation, replacing the various contact forces by fixed external forces (without changing the shape of the workpiece), and then relaxing the external forces until they disappear. The last step (or steps) produces the springback shape. Because the choices of program, element, and procedure usually apply...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
..., or by terminating welding on runoff tabs that are cut away later. If crater cracks are found, they should be chipped out and the area rewelded, because it is very difficult to melt out a crater crack. Hat cracks (No. 9, Fig. 3 ) derive their name from the shape of the weld cross section with which...