How did temperature affect the toughness of the specimens?
Q: What is elongation testing?
A: Elongation testing is a measure of far stretching of a sample before it breaks. The result is…
Q: a) Draw the stress strain curves for metals, polymers and ceramics?
A: Given Data⇒ Stress-strain curve for metal, polymers, and ceramics
Q: What is Circumferential Stress?
A: Circumferential Stress When pressure inside thin pressure vessel exceeds it exerts force from inside…
Q: If the Vicker’s hardness number (HVN) is 385 N/mm2, how much load was applied on the test specimen…
A:
Q: Differentiate between normal strain measures and sheer strain measures?
A: Normal Strain: The deformation caused in normal strain is due to normal forces such as tension or…
Q: 2 - If the tensile specimen is not cylindrical rod shaped but a flat rectangular plate, how do you…
A: Hello. Since you have posted multiple questions and not specified which question needs to be solved,…
Q: How can we determine the deformation of an axially loaded member?
A: Whenever a member is loaded axially there is change in the dimensions of the member. Length of the…
Q: What is creep and stress rupture testing?
A: Creep and stress rupture testing: The creep and stress rupture testing is used to check the…
Q: Question 3: Describe how the compatibility equation of deformation can be used to solve statical…
A: the compatibility equation of deformation can be used to solve statical indeterminate structures
Q: What is the small strain analysis in the engineering design?
A: When a body is subjected to any tensile or compressive forces then the body undergoes deformation…
Q: Determine Brinell Hardness Number for a specimen that has a surface area of indentation as 10 mm?…
A:
Q: What does the region of strain hardening cause?
A: The working of the metals below their recrystallisation temperature is known as cold working…
Q: What is period of deformation?
A: The period of deformation can be defined as
Q: What are ratchet lines, and how are they arranged with respect to the fatigue crack front and any…
A: Ratchet lines are steps in fatigue fracture surfaces that originate from the interaction between…
Q: Rank the curves based on the change in strain that occurs during the necking phase. Rank the curves…
A: Various stages shown on the stress-strain diagram are: Proportionality limit Plastic limit Necking…
Q: What is the permanent strain?
A: Strain: When a force is applied to any system, they deform based on the applied force. The…
Q: What is the boundary layer lubrication, how it affects the movement of metal parts?
A: Boundary layer lubricant: The boundary layer lubricant is the thin molecular film of lubricant which…
Q: What important quantity (or quantities) can be determined by measuring striation spacing?
A: Striation Spacing: Striation Spacings are the marks that are produced at the mating surfaces of the…
Q: The energy absorbed during the fracture of notched specimen is related to the area under the…
A: Solution:
Q: What does the modulus of the toughness of material represent?
A: The modulus of toughness is the measure of how much strain energy can a material absorb before the…
Q: What is the relationship factor between the fatigue test and any other mechanical property (tensile…
A: given; What is the relationship factor between the fatigue test and any other mechanical property…
Q: What do the normal strains cause?
A:
Q: 2. Which of the following are responsible for residual stress and distortion?
A: Residual stresses are the stresses in the material remains in the material after the removal of the…
Q: 30- After which step during the tensile test the force starts to decrease? A) at the start of the…
A: As multiple questions are asked only first question has to be solved. Please post the other…
Q: When the instantaneous load is applied parallel to the specimen cross section, the material is under…
A: As per given question When the instantaneous load is applied parallel to the specimen cross…
Q: What is the permanent deformation?
A:
Q: Which metal often does not have a well-defined yield point and which procedure is suitable to yield…
A: Answer : Yield point : It is defined as that point after which material does not regain its original…
Q: What are the main features of the Rockwell Hardness Test?
A: The Rockwell scale is a hardness scale which is based on indentation hardness of a material. This…
Q: Ductile and brittle fracture (what are they, how do they look under microscope)
A: Ductile fracture is a type of fracture characterised by a broad plastic deformation or "necking."…
Q: When a material breaks suddenly with no sign of deformation, what is it said to be?
A: Brittle Material
Q: 5) Draw the stress-strain curve and gives the stress and strain equations for both Engineering and…
A:
Q: What are the main factors affecting on the impact test? And, How?
A: Impact test: In this test, the measure the amount of energy absorbed by a material during fracture.…
Q: Metal work: What are possible sources of error in trying to obtain a specific hardness or strength?
A:
Q: What would be the result of the Yielding of the material?
A: In stress-strain curve of material the yield point is the point of elasticity. Yield points shows…
Q: If the tensile specimen is not cylindrical rod shaped but a flat rectangular plate, how do you…
A:
Q: Can the yield point of material be increased by strain hardening?
A: The strain hardening process is known as the Work hardening. This operation is carried out below the…
Q: Q12. How would a creep profile on a brittle material looks like?
A: How would be creep profile on a brittle material.
Q: How is Dilatation, or volumetric strain caused?
A: Dilatation or volumetric strain: The volumetric strain or dilatation is defined as the change in…
Q: How are Engineering stress and strain calculated?
A: Engineering stress is also known as the nominal stress, defined as the ratio of applied load to the…
Q: What are the principal strains?
A: Principal Strain: Maximum and minimum normal strain possible for a specific point on a structural…
Q: How is the Strain energy caused?
A: Strain energy is the energy that is caused due to deformation in a body. The area under the…
Q: Materials, properties and testing Describe the effect bend testing have on the mechanical properties…
A: A bend test is a technique for measure stiffness and yield properties of certain materials. Bend…
Q: What are the experimental techniques used to measure the strain?
A: The experimental techniques used to measure the strain of material under the action of load comes…
Q: Which factors affect the selecting of the appropriate Rockwell hardness scale?
A: Following factors affect the Rockwell Hardness test: For different materials different Rockwell…
Q: These are components of the total resistance to sliding the portion to one side of the exploratory…
A: Part 1) Given that, a component is having resistance to the sliding the portion one side of the…
Q: Given your understanding of what initiates and controls failure in materials, which of the following…
A: The life time is the most important part of the machine element. More the life time of the element…
Q: 5) Which of the following statement(s) is/are correct? i. The lower temperature limit for…
A: Both the statements are correct
Q: What is the modulus of rigidity?
A: Modulus of rigidity
How did temperature affect the toughness of the specimens?
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- Hypothesis: EF=ma , f=MkfN Question: Make a judgment about whether or not your hypothesis (I used EF=ma , f=MkfN) can be rejected or if it is supported based on this experiment. Justify your judgment with evidence from this experiment. What assumptions did you make? Help me with this question pleaseA 54g54g copper calorimeter contains 80cm380cm3 at 20∘C20∘C. A very cold 110g110g copper cylindrical sample is dropped into the water causing the water to partially freeze, with 5cm35cm3 being converted to ice. The final temperature of the system is 0∘C0∘C. What is the initial temperature in Kelvins of the cylindrical sample?a) The number of kilocalories in food is determined by calorimetry techniques in which the food is burned and the amount of heat transfer is measured. How many kilocalories per gram are there in a 5.00-g peanut if the energy from burning it is transferred to 0.500 kg of water held in a 0.100-kg aluminum cup, causing a 54.9C temperature increase? (b) Compare your answer to labeling information found on a package of peanuts and comment on whether the values are consistent.
- 4. The air temperature measurement results obtained by the dry ball temperature 37 ° C and the wet bulb temperature 27.5 ° C. Using a Psychrometric chart, determine the properties of the air as follows: a. RH: Answer % b. Water content: Answer kg of water / kg of air c. Specific volume: Answer m3 / kg d. Enthapi: Answer kJ / kg e. Condensation temperature: Answer ° C If the air is in 162 m3 space, determine, f. Air weight (dry air and moisture): Answer kg g. The amount of water content in the room: Answer kgA food product with 85% moisture content is being frozen. Estimate the specific heat of the product at -10°C when 80% of the water is in a frozen state. The specific heat of dry product solid is 2 kJ/(kg °C). Assume specific heat of water at -10°C is similar to specific heat of water at 0°C. And the heat of the types of ice follow the function of Cp ice = 0.0062 Tfrozen + 2.0649. Cp frozen product = ... kJ/kg °C.yqyahdtsgwbabakaksjdhwbajJzhdbejakznxhejajhduejsjzbxbdjjakakjxjs 5. A thermometer reading 18°F is brought into a room where the temperature is 70°F, 1min later the thermometer reading is 31°F. Determine the temperature reading as a function of time and in particular, find the temperature reading 5 min after the thermometer is first brought into the room.
- A nuclear power station is situated in Coal Valley, which is a roughly rectangular valley that is 5 km long, 2 km wide, and 200 m deep. You have been asked to evaluate the effects of a worst-case scenario where the reactor housing fails, and radiation is released to the atmosphere. In your evaluation, you determine that 120 kg of Iodine-131 (a radioisotope that causes thyroid gland and liver damage) could be released into the atmosphere. Assuming the release of Iodine-131 was very rapid and all of it was uniformly distributed through the valley’s atmosphere with none escaping the valley, what would the concentration of Iodine-131 be in the valley’s air? Your answer should be expressed in units of ppm(v), and you may assume an atmospheric pressure of 1.0 atm and a temperature of 20oC. 2. Assuming the Iodine-131 concentration you calculated in part (a) is the initial concentration in the valley, you now want to determine the time it will take for the concentration to decrease to…Given the following: Cp of Br: 0.226 J/g-K BP of Br: 59 deg C density of Br: 3.12 g/mL Hvap of Br: 30,900 J/mol V of liquid Br solution: 50 mL Cp of Br2: 0.473 J/g-K What is the total heat required in heating Br from 25 to 75 deg C?Answer this ASAP,thx Furnace walls are lined with 3 layers of firebrick with a thickness of 6 in (k=0.95 Btu/h.ft.°F), insulating brick (k-0.4 Btu/h.ft.°F) and common brick (k=0.8 Btu /h.ft.°F) Firebrick inlet temperature, T₁ = 1800°F, maximum insulating brick temperature, T₂ = 1720°F and T3 = 280°F. 1. Calculate the thickness of the insulating brick layer. 2. If the common brick is 9 in., calculate the exit temperature.
- Suppose we have a piece of a candy bar that has an initial mass of 28g. If we ignite the piece of candy bar (literally burn it), and it increases the temperature of 285.23g of water from 18.95°C to 77.43°C, how many calories per gram of energy did the candy bar provide if the final mass of the marshmallow is 4.45? Note: 1.00 cal = 4.184 J. Give your answer in units of cal/g.Provide the statement of the trouton rule and the typical numeric value of certain thermodynamic parameter described in this ruleA sample containing 1.0 mole of oxygen gas initially at 45 degrees Celsius is heated to 110 degrees Celsius under isobaric conditions. Assuming that the accurate Cp value for oxygen gas can be obtained from the relationship given below, what would be the sample's new change in enthalpy (in KiloJoules)? Write the answer in THREE SIGNIFICANT FIGURES