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rheological behavior

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Published: 01 December 2009
Fig. 2 Rheological behavior of viscous materials. Stress versus strain rate More
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005224
EISBN: 978-1-62708-187-0
...Abstract Abstract Semisolid metal (SSM) processing is a special die casting process, where partially solidified metal slurry is injected into a die cavity to form die cast components. This article discusses the flow behavior of an SSM slurry with emphasis on viscosity, rheological behavior...
Image
Published: 01 January 1996
Fig. 16 Unloading and reloading behavior for two rheological models. The first strain history causes only elastic deformation during unloading, but the second one is sufficiently large to cause compressive yielding. The third history is completely reversed and causes a hysteresis loop More
Image
Published: 01 January 1996
Fig. 17 Behavior of a multistage spring-slider rheological model for an irregular strain history. A model having the monotonic stress-strain curve (a) is subjected to strain history (b), resulting in stress-strain response (c). Adapted from Ref 21 More
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
...-rate thermomechanical rheological characterization protocols, which are discussed later in this article. Thermal Properties Historically, the most commonly used protocol for characterizing a polymer’s thermal behavior is the heat DTUL (ASTM D648-18, Ref 9 ). The test specimen is immersed using...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003023
EISBN: 978-1-62708-200-6
...Abstract Abstract Thermal analysis provides a powerful tool for researchers and engineers in determining both unknown and reproducible behavioral properties of polymer molecules. This article covers the thermal analysis and thermal properties of engineering plastics with respect to chemical...
Book Chapter

By Rob Bosman
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006381
EISBN: 978-1-62708-192-4
... strokes gives a first impression of the properties, such as pumpability. However, applicability for vibration-rich applications and the running speed require a more detailed analysis of the grease shear flow in order to understand the rheological behavior of the grease. Nevertheless, a first grease...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005509
EISBN: 978-1-62708-197-9
... (shape change) Statistical dispersion of geometrical and quality parameters of HIPed parts as a result of a normal scatter in the process parameters and the starting properties of the processed materials Influence of the rheological properties of the materials involved during HIP of a capsule...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006571
EISBN: 978-1-62708-290-7
... ceramic processes. For traditional powder metallurgy processes, binder functions include binding of particles, prevention of particle agglomeration, tailoring of rheological behavior, complete burnout, ensuring postsintering part retention, and minimization of debinding defects ( Ref 1 ). Because few...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006855
EISBN: 978-1-62708-392-8
... for the 3D bioprinting process ( Ref 13 ). Further, biological cues, such as growth factors or ECM molecules, can be added to the hydrogel to improve or guide cell behavior toward specialized applications ( Ref 3 ); however, such biomolecule-based approaches are not considered in this article...
Series: ASM Handbook
Volume: 4B
Publisher: ASM International
Published: 30 September 2014
DOI: 10.31399/asm.hb.v04b.a0005933
EISBN: 978-1-62708-166-5
... on CNT nanofluid by Ding et al. ( Ref 41 ) found shear-thinning behavior at low shear rates but slight shear thickening at shear rates greater than 200 s −1 . Kulkarni et al. investigated the rheological behavior of copper oxide (CuO) nanoparticles of 29 nm average diameter dispersed in deionized water...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002365
EISBN: 978-1-62708-193-1
... at a yield stress σ o . Unloading and reloading may cause only elastic deformation, or the frictional slider may move if the strain excursion is sufficiently large. Fig. 16 Unloading and reloading behavior for two rheological models. The first strain history causes only elastic deformation during...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005503
EISBN: 978-1-62708-197-9
.... However, the rheological behavior of a powder-binder feedstock mixture is significantly different from that of a thermoplastic. Hence, the direct application of methods developed for thermoplastics to PIM requires caution ( Ref 4 , 10 ). Commercial software packages, including Moldflow (Moldflow Corp...
Book Chapter

By Justin Heimsch
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005273
EISBN: 978-1-62708-187-0
... that must be reheated to achieve the structures necessary for casting. The second casting process combines billet sawing, reheating, and the actual injecting of material into the mold. The article focuses on these processes and provides information on rheological tests. It discusses some key design concepts...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003402
EISBN: 978-1-62708-195-5
... based on an understanding of the physical phenomena and constitutive laws derived from experimental data. Once the model is well posed in mathematical equations, the behavior of the model in response to changes in the process and materials variables can be examined. This information can prove to be very...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002490
EISBN: 978-1-62708-194-8
... forming, and injection molding are similar in principle to processes used in the metals, plastics, and food industries. Experience in these areas can be used insofar as rheological behavior is similar. The abrasiveness of ceramics requires that production equipment otherwise similar to other industries...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003441
EISBN: 978-1-62708-195-5
... application. The thermoset resins most widely used for composite matrices are epoxies, bismaleimides, phenolics, polyesters, vinyl esters, and polyimides. The properties of the uncured resins that are of most interest are the equivalent weight and viscosity, or rheological, values. When the equivalent weight...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006140
EISBN: 978-1-62708-175-7
... include: New engineering models for powder material behavior during HIP Adequate databases for the rheological properties of the powder and HIP tooling materials Techniques for the solution of the reverse problem of HIP; that is determining the HIP capsule geometry by the results of modeling...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003052
EISBN: 978-1-62708-200-6
... Commodity chemicals Special additives Volatilized silica … Used as an addition to low-cement castables to improve rheological properties and sintering Byproduct of the silicon industry; Norway Calcined alumina … Used as an addition to castables and high-quality alumina products to improve...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001346
EISBN: 978-1-62708-173-3
... drying behavior; its surface activity (wetting behavior); and the solubility of the residues left after reflow. The vehicle usually consists of a rosin (pine derivative) or a synthetic resin, solvents to adjust drying time and temperature, modifiers to control rheological behavior, and an activator...