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dynamic viscoelastic properties

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Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003377
EISBN: 978-1-62708-195-5
... expansion coefficients, moisture swelling coefficients, static and dynamic viscoelastic properties, conductivity, and moisture diffusivity. unidirectional fiber composites aligned continuous fibers analytical method physical properties elasticity thermal expansion coefficients moisture swelling...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006941
EISBN: 978-1-62708-395-9
.... In Eq 12 , v is Poisson’s ratio for the plastic. Dynamic mechanical testing can also be used to evaluate a material for its viscoelastic properties ( Ref 4 , 8 , 10 , 13 ). Such testing methods can be used to measure values that are called the storage and loss moduli (or compliances...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003024
EISBN: 978-1-62708-200-6
... a time period starting from about 10 s and extending up to 10 years, while dynamic experiments provide data over an effective time interval of 10 −8 to 10 3 s ( Ref 13 , 16 , 17 , 18 , 21 , 24 ). Two additional experimental techniques that may be used to measure viscoelastic properties are stress...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003025
EISBN: 978-1-62708-200-6
... essentially equivalent ( Ref 5 , 6 , 7 , 8 , 9 , 10 ). Time- and temperature-dependent viscoelastic properties can be examined experimentally by creep and stress relaxation tests and by dynamic mechanical testing methods. Creep tests measure the time-dependent deformation of a material while...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006676
EISBN: 978-1-62708-213-6
... Abstract Dynamic mechanical analysis (DMA) is a powerful tool for studying the viscoelastic properties and behavior of a range of materials as a function of time, temperature, and frequency. This article describes various systems and equipment used in DMA setup and discusses the processes...
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
... Abstract This article briefly introduces some commonly used methods for mechanical testing. It describes the test methods and provides comparative data for the mechanical property tests. In addition, creep testing and dynamic mechanical analyses of viscoelastic plastics are also briefly...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003298
EISBN: 978-1-62708-176-4
... (−28 °F). These observations clearly demonstrate that achievement of stress equilibrium within polymeric samples is influenced by their initial elastic properties. Further experiments also are needed to quantify the stress-relaxation kinetics of viscoelastic materials as well as damage evolution...
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
... of each. Features of rotational and capillary rheometry Table 5 Features of rotational and capillary rheometry Rotational • Can measure very low shear rates, which often can provide molecular weight information • Dynamic testing can provide viscoelastic properties, which are very important...
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
... for calculating the shear rate at the capillary wall for non-Newtonian fluids. Use of Cone and Plate and Parallel Plate Geometries in Melt Rheology Determination of a polymer melt’s viscoelastic properties can easily be categorized into two broad areas: steady-shear rheometry and dynamic oscillatory...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003465
EISBN: 978-1-62708-195-5
..., compression, and tension) on a range of samples. Its high sensitivity makes DMA an ideal tool for following the course and kinetics of the cure process and for analyzing the viscoelastic properties of the final product. Dynamic mechanical analysis can detect some or all of the events in a thermoset curing...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006938
EISBN: 978-1-62708-395-9
..., designers of plastic parts should be cautious of use scenarios that may result in a viscoelastic response. Such caution may take the form of understanding the dynamic mechanical properties and combinations of stress and temperature that may favor an elastic mechanical response, unless the viscous qualities...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003273
EISBN: 978-1-62708-176-4
... in a complex way on the elastic and plastic properties of the film and substrate; thus, the guideline must be used with caution. The dynamic stiffness measurement technique is an especially useful tool for establishing the depth at which the measured properties are substrate independent. Because this method...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006674
EISBN: 978-1-62708-213-6
...-temperature (PVT) data, are equation-of-state thermodynamic properties that characterize the volume expansion and compressibility of viscoelastic materials. The PVT data are used to model injection-molding processes. Another use for the high-pressure dilatometer is the construction of unary and nonambient...
Book Chapter

Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003383
EISBN: 978-1-62708-195-5
.../002199836700100102 4. Hashin Z. , Complex Moduli of Viscoelastic Composites, II, Fibre Reinforce Materials , Int. J. Solids Struct. , Vol 6 , 1970 , p 797 – 804 5. Ni R.G. and Adams R.D. , A Rational Method for Obtaining the Dynamic Mechanical Properties of Laminae...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006931
EISBN: 978-1-62708-395-9
... materials by measuring a physical or mechanical property as a function of temperature or time at a constant temperature. The more common methods used in thermal analysis are DSC, DTA, TGA, TMA, and dynamic mechanical analysis (DMA). Differential scanning calorimetry measures the thermal energy absorbed...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003256
EISBN: 978-1-62708-176-4
... ( Table 7 ). The following sections briefly describe the test methods and comparative data for the mechanical property tests listed in Table 7 . In addition, creep testing and dynamic mechanical analyses of viscoelastic plastics are also briefly described. For more detailed descriptions of these test...
Series: ASM Handbook
Volume: 23A
Publisher: ASM International
Published: 12 September 2022
DOI: 10.31399/asm.hb.v23A.a0006860
EISBN: 978-1-62708-392-8
...-droplet-impingement depositions during LIFT printing. Printability Phase Diagram Given that the jetting regimes are heavily influenced by the material properties and printing conditions, various dimensionless numbers have been used to better characterize the jetting dynamics and printability during...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005619
EISBN: 978-1-62708-174-0
... of emerging new technologies that employ UW in UC ( Ref 3 , 42 , 43 ). Compared with UW of polymers, UW of metals seems to be more challenging to model. In metals, vibration and heat have effects on dislocation dynamics, metallurgical transformations, and associated variations in thermomechanical properties...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006945
EISBN: 978-1-62708-395-9
... Abstract This article is a compilation of abbreviations of terms, techniques, standards, compounds, and properties of materials that are relevant to the characterization and failure analysis of plastics. failure analysis plastics Acknowledgment This article was revised from...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.9781627083959
EISBN: 978-1-62708-395-9