Homework Answers
All materials are Brittle.
Concrete
Glass
Rubber
High carbon steel
Brittle materials are those which fails suddenly without much deformation before failure. Very less plastic deformation after elastic point in case of brittle materials. Brittle materials absorb less energy than ductile materials before fracture. Rubber is elastic but it is not ductile. As carbon percent increases brittleness increases for steel.Both concrete and glass are brittle.
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Check all brittle materials. Concrete Glass Rubber High-carbon steel
IV According to the table below, which of the following materials is the most brittle, i.e....
IV According to the table below, which of the following materials is the most brittle, i.e. expands the least before breaking (4 points)? Young's Modulus Ultimate Strength (100 N/m2) 400 50 170 50 Material (10 N/m2) Steel Wood Bone Glass 200 13 65 A. Steel B. Wood C. BoneD. Glass
High-carbon steel has 1.70% carbon dissolved in iron. What mass of carbon is present in a high-carbon steel knife blade...
High-carbon steel has 1.70% carbon dissolved in iron. What mass of carbon is present in a high-carbon steel knife blade that has a mass of 114 g? Give your answer to three significant figures. Answer in (g C)
A flat composite wall consists of four layers of different materials (Concrete, Carbon steel, Kapok, and...
A flat composite wall consists of four layers of different materials (Concrete, Carbon steel, Kapok, and Masonry Brick). Each layer is 4 inch thick. During service, heat energy transfers from the left side of the wall (higher temperature-500°C) to the right (lower temperature 20°C), thus generting the temperature profile as shown in figure below. Please identify material for each layer and provide explanation (or short calculations if applicable). Also, determine temperature at the boundary between A.1 3d and 4th layers....
UITVE 3) Column AB is made from a steel pipe filled with high strength concrete. The...
UITVE 3) Column AB is made from a steel pipe filled with high strength concrete. The pipe has an outer diameter of 10" and an inner diameter of 8". Determine the maximum allowable floor loadings, P. The steel and concrete strengths are 38 ksi and 5 ksi, respectively. The modulus of elasticity for high strength concrete is 42 x 10 ksi and for A-36 steel is 29 x 10'ksi :: 9 in. T in. 10 ft Section a-a Section a-a...
Material science 1) Polypropylene (PP) has a glass-transition temperature of -15 oC and a melting...
Material science 1) Polypropylene (PP) has a glass-transition temperature of -15 oC and a melting temperature of 175 oC. This means that at a temperature of -40 oC that PP is ________, and at temperature 0 oC PP is _________ . (A) brittle, brittle (B) ductile, brittle (C) brittle, ductile (D) ductile, ductile (E) low in thermal conductivity, high in thermal conductivity. .2) Galvanized steel corrodes slowly in air because: (A) the...
Part A The column is constructed from high-strength concrete and eight A992 steel reinforcing rods. The...
Part A The column is constructed from high-strength concrete and eight A992 steel reinforcing rods. The column is subjected to an axial force of P 190 kip Each rod has a diameter of 1 in. For A992 steel Et 29.0(103) ksi, and for high-strength concrete Ee 4.20(10) ksi (Figure 1) Determine the average normal stress in the concrete and in each rod Express your answer to three significant figures and include appropriate units o,o.-1 Value Units | Submit Part B...
Which of the following materials are typically used as wires in composites? Aluminum oxide Glass |-■...
Which of the following materials are typically used as wires in composites? Aluminum oxide Glass |-■ Silicon nitride : Boron Steel Tungsten ■ Silicon carbide Molybdenum Graphite/carbon
12. (12 Points) A student is interested in high-performance racing. The student, while learning about high-performance...
12. (12 Points) A student is interested in high-performance racing. The student, while learning about high-performance racing comes across a research document that claims that rubber materiais experience a kinetic friction with concrete such that the frictional force is directly proportional to sliding speed. (a) Would this claim be valid for materials such as wood, glass, and metal? If so, why? If not, why not? The student wishes to experimentally test this claim. The student obtains a piece of tre...
Mechanics of Materials i CE/AREN 2313 3. A steel plate in. thick is embedded in a...
Mechanics of Materials i CE/AREN 2313 3. A steel plate in. thick is embedded in a horizontal concrete slab and is used to anchor a high-strength vertical cable as shown. The diameter of the hole in the 16 plate is 7 in, the ultimate strength of the steel used is 36 ksi, and the ultimate bonding stress between plate and safety of F.S. 3.60 is desired when P 2.5 kips, determine concrete is 300 psi. Knowing that a factor of...
Ultra high performance concrete (UHPC) is a relatively new construction material that is characterized by strong...
Ultra high performance concrete (UHPC) is a relatively new
construction material that is characterized by strong adhesive
properties with other materials. The article "Adhesive Power of
Ultra High Performance Concrete from a Thermodynamic Point of
View"† described an investigation of the intermolecular forces for
UHPC connected to various substrates. The following work of
adhesion measurements (in mJ/m2) for UHPC specimens adhered to
steel appeared in the article.
Ultra high performance concrete (UHPC) is a relatively new construction material that is...
IV According to the table below, which of the following materials is the most brittle, i.e. expands the least before breaking (4 points)? Young's Modulus Ultimate Strength (100 N/m2) 400 50 170 50 Material (10 N/m2) Steel Wood Bone Glass 200 13 65 A. Steel B. Wood C. BoneD. Glass
A flat composite wall consists of four layers of different materials (Concrete, Carbon steel, Kapok, and Masonry Brick). Each layer is 4 inch thick. During service, heat energy transfers from the left side of the wall (higher temperature-500°C) to the right (lower temperature 20°C), thus generting the temperature profile as shown in figure below. Please identify material for each layer and provide explanation (or short calculations if applicable). Also, determine temperature at the boundary between A.1 3d and 4th layers....
UITVE 3) Column AB is made from a steel pipe filled with high strength concrete. The pipe has an outer diameter of 10" and an inner diameter of 8". Determine the maximum allowable floor loadings, P. The steel and concrete strengths are 38 ksi and 5 ksi, respectively. The modulus of elasticity for high strength concrete is 42 x 10 ksi and for A-36 steel is 29 x 10'ksi :: 9 in. T in. 10 ft Section a-a Section a-a...
Part A The column is constructed from high-strength concrete and eight A992 steel reinforcing rods. The column is subjected to an axial force of P 190 kip Each rod has a diameter of 1 in. For A992 steel Et 29.0(103) ksi, and for high-strength concrete Ee 4.20(10) ksi (Figure 1) Determine the average normal stress in the concrete and in each rod Express your answer to three significant figures and include appropriate units o,o.-1 Value Units | Submit Part B...
Which of the following materials are typically used as wires in composites? Aluminum oxide Glass |-■ Silicon nitride : Boron Steel Tungsten ■ Silicon carbide Molybdenum Graphite/carbon
12. (12 Points) A student is interested in high-performance racing. The student, while learning about high-performance racing comes across a research document that claims that rubber materiais experience a kinetic friction with concrete such that the frictional force is directly proportional to sliding speed. (a) Would this claim be valid for materials such as wood, glass, and metal? If so, why? If not, why not? The student wishes to experimentally test this claim. The student obtains a piece of tre...
Mechanics of Materials i CE/AREN 2313 3. A steel plate in. thick is embedded in a horizontal concrete slab and is used to anchor a high-strength vertical cable as shown. The diameter of the hole in the 16 plate is 7 in, the ultimate strength of the steel used is 36 ksi, and the ultimate bonding stress between plate and safety of F.S. 3.60 is desired when P 2.5 kips, determine concrete is 300 psi. Knowing that a factor of...
Ultra high performance concrete (UHPC) is a relatively new
construction material that is characterized by strong adhesive
properties with other materials. The article "Adhesive Power of
Ultra High Performance Concrete from a Thermodynamic Point of
View"† described an investigation of the intermolecular forces for
UHPC connected to various substrates. The following work of
adhesion measurements (in mJ/m2) for UHPC specimens adhered to
steel appeared in the article.
Ultra high performance concrete (UHPC) is a relatively new construction material that is...
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