Question
In: Physics
Briefly explain how each of the following influences the elastic modulus of a semicrystalline polymer and...
Briefly explain how each of the following influences the elastic modulus of a semicrystalline polymer and why:
(a) Molecular weight
(b) Degree of crystallinity
(c) Sample crystallized under strong flow conditions
Solutions
genius_generous answered 2 years agoRelated Solutions
Find a materials property plot of elastic modulus and density. Identify a composite, a polymer, and...
Find a materials
property plot of elastic modulus and density.
Identify a composite,
a polymer, and a metal with densities less than 3000
kg/m3 (Mg = 106 g) and the highest possible
elastic modulus. Provide an example of an engineering design that
might require this combination of material properties and explain
why those properties would be important. What design advantages
could a polymer offer over a metal even though the polymer has a
lower stiffness?
Explain ductility, strength and elastic modulus. Explain and compare these for ceramics and metals.
Explain ductility, strength and elastic modulus. Explain and
compare these for ceramics and metals.
Briefly describe how each of the following factors influences the electrical resistivity of metals: i) Temperature....
Briefly describe how each of the following factors influences
the electrical resistivity of metals: i) Temperature. ii) Solid
solution alloying. iii) Existence of multiple solid phases. iv)
Work hardening.
Briefly describe how each of the following factors influences the electrical resistivity of metals: i) Temperature....
Briefly describe how each of the following factors influences
the electrical resistivity of metals: i) Temperature. ii) Solid
solution alloying. iii) Existence of multiple solid phases. iv)
Work hardening.
Modulus of Elasticity of Concrete? Explain how it is defined. Modulus of Elasticity of steel?
Modulus of Elasticity of Concrete? Explain how it is
defined. Modulus of Elasticity of steel?
Compute the elastic modulus for the following metal alloys, whose stress-strain behaviors may be observed in...
Compute the elastic modulus for the following metal alloys,
whose stress-strain behaviors may be observed in the "Tensile
Tests" module of Virtual Materials Science and Engineering (VMSE):
(a) titanium, (b) tempered steel, (c) aluminum, and (d) carbon
steel. How do these values compare with those presented in Table
6.1 for the same metals?
- Briefly explain the cultural influences on personality and apply it to a real person –...
- Briefly explain the cultural influences on personality and
apply it to a real person – for example, someone from current
events, politics, business, sports, the entertainment field. Define
the terms you’re using, and apply them to an aspect of this
person’s life (a specific action, behavior, or decision, for
example). How can we understand this person more fully by using
this concept to understand him/her?
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum...
Young's modulus is a quantitative measure of the stiffness of an elastic material. Suppose that for aluminum alloy sheets of a particular type, its mean value and standard deviation are 70 GPa and 1.6 GPa, respectively (values given in the article "Influence of Material Properties Variability on Springback and Thinning in Sheet Stamping Processes: A Stochastic Analysis" (Intl. J. of Advanced Manuf. Tech., 2010: 117-134)).(a) If X is the sample mean Young's modulus for a random sample of n =...
A steel has a modulus of elasticity of 29,000 ksi and an elastic limit of 52...
A steel has a modulus of elasticity of 29,000 ksi and an elastic
limit of 52 210 psi. A rod of this material and cross section of
0.0186 in2 and 36 in length is fastened vertically to a beam with a
load of 410 lb at the opposite end. Determine: a) If this load is
removed, will the bar return to its initial length? Justify the
answer; b) The unitary deformation of the bar in these conditions;
c) The minimum...
Young's modulus is a quantitative measure of stiffness of an elastic material. Suppose that for aluminum...
Young's modulus is a quantitative measure of stiffness of an
elastic material. Suppose that for aluminum alloy sheets of a
particular type, its mean value and standard deviation are 70 GPa
and 1.6 GPa, respectively (values given in the article "Influence
of Material Properties Variability on Springback and Thinning in
Sheet Stamping Processes: A Stochastic Analysis" (Intl. J. of
Advanced Manuf. Tech., 2010: 117–134)). (a) If X is the sample mean
Young's modulus for a random sample of n =...
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