Matse 259 - Study guides, Class notes & Summaries

MATSE 81 Exam 3 Questions With 100% Correct Answers According to the course reading, the ancient Mesopotamians began using this composite around 3400 BCE. plywood What two phases compose many composite materials? matrix and dispersed phase What are the sub-classifications of structural composite types discussed in this chapter? laminates, sandwich panels What is the distinction between large-particle and dispersion-strengthened composites? continuum mechanics is used for the ...

Matse 201 Exam 1 With Complete Solutions Metals metallic bonding where electrons are delocalized - dense, stiff, strong, ductile - high thermal & electrical conductivity - opaque, reflective Polymers/plastics covalent bonding where electrons are shared - soft, ductile, low strength, low density - thermal & electrical insulatiors - optically translucent or transparent Ceramics ionic bonding where electrons are donated and received - oxides, nitrides, carbides - hard, brittle...

MATSE 201 Exam 1 Theoretical Questions With 100% Correct Answers What is true regarding the crystal systems? there are 7 shapes that can completely fill 3D space through translational symmetry Which of the following is not one of the crystal systems? Face centered cubic examples of crystal systems: tetragonal, rhombohedral, trigonal Elemental metals do not commonly crystallize in which of the following lattices Simple cubic Which direction has the highest linear density in ...

MATSE 201 Exam 1 Questions With Answers Graded A+ In order to define a crystal structure, one must know the Bravias lattice and basis Which of the following is NOT one of the 7 crystal systems? Face centered cubic Elemental metals do not commonly crystallize in which of the following lattices Simple Cubic Which direction has the highest linear density in a crystal of Cu that crystallizes in the fcc? [110] Which direction has the highest linear density in a crystal of Na ...

Matse 201 Exam 2 Questions With Verified Answers phase a chemically and structurally homogenous state of matter α single alpha phase; where solid solution between 2 components exist L+ α 2 phase region, mix of liquid phase and alpha phase containing both components ; Degrees of freedom refers to number of externally controlled variables( temp, pressure, system composition) which must be specified to define the state of the system F=C-P+2 where .. F= deg. of freedom C= ...

Matse 201 Exam 3 Questions With Verified Answers 3R above the debye temp, the heat capacity levels off to this value higher the debye temp is higher/lower for ceramics than for metals phonon quantized mode of vibration in a crystal alpha coefficient of thermal expansion is denoted by decreases alpha increases/decreases with increasing bond strength stronger, closer stronger/weaker bonds and farther/closer atomic spacing facilitates heat transfer decrease def...

MATSE 201 Final Exam Questions With Answers When a material acquires heat, it will gain kinetic energy in the form of quantized vibrations called _____________. A) thermal shock B) thermal conductivity C) phonons D) photons C) phonons The relationship between heat transferred to and absorbed by a substance is given by, Q=m•c•∆T. Which of the following is a major assumption for that relationship? A) No change in dimension over temperature range of ∆T B) No phase change ov...

MATSE 400 Exam 1 Questions With Answers Moh's Hardness 10 diamond, C, C-C, strong 3D covalent bonds Moh's Hardness 9 corundum, α-Al2 O3, Al-O (~50% covalent), O are close packed so high bond density Moh's Hardness 8 topaz, Al2 Si O4 F2, Al-O and Al-F (~50% ionic), O and F are close packed, Al-F is stronger Moh's Hardness 7 quartz, Si O2, Si-O (~50% ionic), more open crystal structure with a lower bond density Moh's Hardness 6 orthoclase, K Al Si2 O8, Al-O; Si-O; K...

MATSE 201 Exam 1 Questions With Answers Graded A+ In order to define a crystal structure, one must know the Bravias lattice and basis Which of the following is NOT one of the 7 crystal systems? Face centered cubic Elemental metals do not commonly crystallize in which of the following lattices Simple Cubic Which direction has the highest linear density in a crystal of Cu that crystallizes in the fcc? [110] Which direction has the highest linear density in a crystal of Na ...