Homework Answers
Modulus of toughness is the ability of a material to absorb energy in plastic deformation. It is defined as the amount of strain energy density (strain on a unit volume of material) that a given material can absorb before it fractures.
Hence all statements are True.
If we add alloying elements like Nickel then it's Ductility increases.
Area of Stress and Strain diagram gives Modulus of Toughness upto fracture.
Kindly Write in comment box if you have any doubt before Disliking the Solution. YuThanks
Add Answer to:
The Modulus of Toughness: Can be changed by changing the amount of alloys in a material...
A material with a Young's Modulus of 1 GPa has an edge crack (a) of 1.58...
A material with a Young's Modulus of 1 GPa has an edge crack (a) of 1.58 x10^-5 m. When it is loaded in tension, it fractures at a stress of 450 MPa; given the dimensionless quantity Y can be taken as 1 in fracture toughness calculations, what is the toughness, Gc of the material. 0 0.01 m^1/2 O 10 kJ/m^2 03.17 MPa m^1/2 O 00317 m^1/2 O None of the above
au] CE 121 EXAM-1 October 01, 2014 Instructions: This is a closed book Exam, You may...
au] CE 121 EXAM-1 October 01, 2014 Instructions: This is a closed book Exam, You may use the formsula sheet provided separately 50 Points Write neatly and clearly. Show all intermediate steps. Carry units throughout the solutions. Final answers must be accompanied with units where appropriate Problem 1: State true or false. Please circle your answer 1. Normal force is a foree that acts perpendicular to the area 2. Bending moment is developed when the external loads tend to twist...
7 a) b) c) d) Fracture toughness Kic of a material is: an indication of the...
7 a)
b)
c)
d)
Fracture toughness Kic of a material is: an indication of the materials ability to provide obstacles for dislocation motion. maximum ductility in the material an indication of the resistance a material offers to brittle fracture an indication of the materials endurance limit O maximum area under the stress-strain curve If the Kıc for Al2O3 is about 5 MPa.m 1/2, the Kıc for an Al alloy will be < 5 MPa.m 1/2 True O False The...
7) Which of the following is true? O The linear coefficient of thermal expansion is unique...
7) Which of the following is true? O The linear coefficient of thermal expansion is unique for each material (material property) O The displacement due to temperature is linearly related to the original length O Stress concentration factors relate the maximum stress to the average stress O Sharp corners should be avoided because they create stress concentrations. O All the above are true 8) Which of the following statements are true? O A simply supported beam which supports a load...
Question 13 Define a homogeneous material Material has uniform properties throughout Material exhibits little or no...
Question 13 Define a homogeneous material Material has uniform properties throughout Material exhibits little or no yielding before failure. O Material exhibits little or no yielding before failure. O Material has temperature dependent refractive index. Question 14 Which of the following are true of ductile materials? Fails suddenly without warning, Can be subjected to large strains before failure May exhibit necking prior to failure Shows signs of failure prior to rupture Question 15 The ratio of shear stress to shear...
could you please answer all these parts? 2) One scenario that has been examined in the...
could you please answer all these parts?
2) One scenario that has been examined in the failure investigation of the Space Shuttle Columbia is the impact of a chunk of polyamide foam of mass of 1.211 kg, of dimensions of 0.508 m wide x 0.406 m long x 0.152 m tall, traveling at 457.3 m/s with a thermal heat-shielding tile, essentially composed of silica (SiO) A) (4 pts.) Calculate the kinetic energy with which the polyamide foam hit the silica...
H based carbon fiber containing a known amount of single walled 5. Consider a pitc Sartbon nanotu...
h based carbon fiber containing a known amount of single walled 5. Consider a pitc Sartbon nanotubes (SWNT), By adding small amounts of single walled carbon nanotubes SWNT) to the pitch prior to fiber pulling, the elastic fibers can be i the following questions a. (10 points) Estimate the elastic modulus for both the 1% and 5% SWNT loaded carbon fibers. modulus of the pitch based carbon ncreased. Use the figure below and the other information (given) to answer 700...
Consider both the energy that can be stored in each sample and each sample’s Young’s modulus...
Consider both the energy that
can be stored in each sample and each sample’s Young’s modulus at
the point where it has been stretched by 20%. Which of the
following statements is most accurate? A.At a strain of 20%, more
energy is stored in the artery than the tendon, and the artery has
a higher elastic modulus at this point.B.At a strain of 20%, more
energy is stored in the tendon than the artery, but the artery has
a higher...
1-Determine the % elongation, yield stress and ultimate tensile strength of the material tested above 2-Calculate...
1-Determine the % elongation, yield stress and ultimate tensile
strength of the material tested above
2-Calculate the elastic modulus of the material tested above
3-If a 200mm cylindrical rod of the material tested above, with
radius 20mm, was subjected to a tensile load of 200kN, what would
the length be?
4-An underground wastewater steel pipe with 2mm walls carries an
ammonia solution of 40 g/m3. The pipe is in contact with
groundwater (assume 0 g/m3 ammonia). Determine the
diffusion rate...
3. A 2.8 cm x 5.0 cm rectangular rod is stretched from its initial length of 0.4000 m to a length of 0.4005 m. The Young’s modulus of the rod material is 95 GPa. Poisson’s ratio of the rod material is...
3. A 2.8 cm x 5.0 cm rectangular rod is stretched from its
initial length of 0.4000 m to a length of 0.4005 m. The Young’s
modulus of the rod material is 95 GPa. Poisson’s ratio of the rod
material is 0.333.
A) Calculate the axial stress in units of MPa
B) Calculate the transverse strain in units of microstrain
C) A strain gauge with a strain gauge factor of 2.1 is glued to
the rod before it is stretched,...
A material with a Young's Modulus of 1 GPa has an edge crack (a) of 1.58 x10^-5 m. When it is loaded in tension, it fractures at a stress of 450 MPa; given the dimensionless quantity Y can be taken as 1 in fracture toughness calculations, what is the toughness, Gc of the material. 0 0.01 m^1/2 O 10 kJ/m^2 03.17 MPa m^1/2 O 00317 m^1/2 O None of the above
au] CE 121 EXAM-1 October 01, 2014 Instructions: This is a closed book Exam, You may use the formsula sheet provided separately 50 Points Write neatly and clearly. Show all intermediate steps. Carry units throughout the solutions. Final answers must be accompanied with units where appropriate Problem 1: State true or false. Please circle your answer 1. Normal force is a foree that acts perpendicular to the area 2. Bending moment is developed when the external loads tend to twist...
7 a)
b)
c)
d)
Fracture toughness Kic of a material is: an indication of the materials ability to provide obstacles for dislocation motion. maximum ductility in the material an indication of the resistance a material offers to brittle fracture an indication of the materials endurance limit O maximum area under the stress-strain curve If the Kıc for Al2O3 is about 5 MPa.m 1/2, the Kıc for an Al alloy will be < 5 MPa.m 1/2 True O False The...
7) Which of the following is true? O The linear coefficient of thermal expansion is unique for each material (material property) O The displacement due to temperature is linearly related to the original length O Stress concentration factors relate the maximum stress to the average stress O Sharp corners should be avoided because they create stress concentrations. O All the above are true 8) Which of the following statements are true? O A simply supported beam which supports a load...
Question 13 Define a homogeneous material Material has uniform properties throughout Material exhibits little or no yielding before failure. O Material exhibits little or no yielding before failure. O Material has temperature dependent refractive index. Question 14 Which of the following are true of ductile materials? Fails suddenly without warning, Can be subjected to large strains before failure May exhibit necking prior to failure Shows signs of failure prior to rupture Question 15 The ratio of shear stress to shear...
could you please answer all these parts?
2) One scenario that has been examined in the failure investigation of the Space Shuttle Columbia is the impact of a chunk of polyamide foam of mass of 1.211 kg, of dimensions of 0.508 m wide x 0.406 m long x 0.152 m tall, traveling at 457.3 m/s with a thermal heat-shielding tile, essentially composed of silica (SiO) A) (4 pts.) Calculate the kinetic energy with which the polyamide foam hit the silica...
h based carbon fiber containing a known amount of single walled 5. Consider a pitc Sartbon nanotubes (SWNT), By adding small amounts of single walled carbon nanotubes SWNT) to the pitch prior to fiber pulling, the elastic fibers can be i the following questions a. (10 points) Estimate the elastic modulus for both the 1% and 5% SWNT loaded carbon fibers. modulus of the pitch based carbon ncreased. Use the figure below and the other information (given) to answer 700...
Consider both the energy that
can be stored in each sample and each sample’s Young’s modulus at
the point where it has been stretched by 20%. Which of the
following statements is most accurate? A.At a strain of 20%, more
energy is stored in the artery than the tendon, and the artery has
a higher elastic modulus at this point.B.At a strain of 20%, more
energy is stored in the tendon than the artery, but the artery has
a higher...
1-Determine the % elongation, yield stress and ultimate tensile
strength of the material tested above
2-Calculate the elastic modulus of the material tested above
3-If a 200mm cylindrical rod of the material tested above, with
radius 20mm, was subjected to a tensile load of 200kN, what would
the length be?
4-An underground wastewater steel pipe with 2mm walls carries an
ammonia solution of 40 g/m3. The pipe is in contact with
groundwater (assume 0 g/m3 ammonia). Determine the
diffusion rate...
3. A 2.8 cm x 5.0 cm rectangular rod is stretched from its
initial length of 0.4000 m to a length of 0.4005 m. The Young’s
modulus of the rod material is 95 GPa. Poisson’s ratio of the rod
material is 0.333.
A) Calculate the axial stress in units of MPa
B) Calculate the transverse strain in units of microstrain
C) A strain gauge with a strain gauge factor of 2.1 is glued to
the rod before it is stretched,...
Most questions answered within 3 hours.
-
Using MARS simulator, write MIPS programs according to
the following scenarios: Receive a positive integer number...
asked 41 minutes ago -
An object in front of a concave mirror has a real image that is
11.5 cm...
asked 55 minutes ago -
Consider the reaction, C3 H8 + O2 --> CO2 + H2O. How many
moles of O2...
asked 2 hours ago -
You and your opponent both roll a fair die. If you both roll the
same number,...
asked 2 hours ago -
In a study of the accuracy of fast food drive-through orders,
Restaurant A had 257 accurate...
asked 2 hours ago -
Identify and describe in detail the four categories of
institutions that could be included in a...
asked 3 hours ago -
In python
class Customer:
def __init__(self, customer_id, last_name, first_name, phone_number, address):
self._customer_id = int(customer_id)
self._last_name =...
asked 3 hours ago -
What is an example of a limitation in implementing a new
ERP system and how it...
asked 3 hours ago -
In a section of 9.7cm of an artery with a radius of 2.6mm there
is a...
asked 3 hours ago -
the two carboxylic acid groups of aspartic acid have different
acidities with pKa values of 2.1...
asked 3 hours ago -
Would CuCO3 aqueous salt combined with calcium chloride
form a solid precipitate? If so, what would...
asked 3 hours ago -
How do ECM Solutions assist in embedding a culture of continuous
improvement in an organization? (Project...
asked 3 hours ago