Compute the line energy of dislocation in fcc, diamond. The shear modulus of carbon is 462 GNm 2. The diameter of carbon atom in diamond is 1.54Å. Answer: 1.46 x 10-8J/m
Q: 1. (a) (b) Explain the difference between Griffith and Irwin's approach to determine the critical…
A: Solution:- 1). Griffith's hypothesis of fragile crack can be re-deciphered as a basic instance of…
Q: Air is 21% oxygen. You measure the total translational kinetic energy of the molecules of oxygen in…
A: Given data: - The total translational kinetic energy of the molecules of oxygen in a container is…
Q: A metallic bar of cross-section Ao = 103 mm² and length Lo = 0.1 mm, is subjected to = 1600 N, the…
A: Given: The cross section area of the metallic bar is 103 mm2. The original length of the…
Q: How is the bulk modulus at equilibrium distance Beg related to the cohesive energy of the crystal u…
A: The bulk modulus (B) of the material is given using the following expression. But the pressure P…
Q: 2.31. The three principal stresses at a given point are o=60 MPa, o2=-100 MPa, 03 =-10 MPa. If the…
A: Given: The principal stresses at a given point are 60 MPa, -100 MPa and -10 MPa. Introduction: The…
Q: The strain components εx, εy, and γxy are given for a point in a body subjected to plane strain.…
A: Given: εx=0 μεεy=350 μεγxy=210 μrad -45o≤θp≤+45o
Q: A farmer making grape juice fills a glass bottle to the brim and caps it tightly. The juice expands…
A: thank you
Q: 5. For a linear viscoelastic material, assume its = 3 seconds, T = 31 seconds, ER = 150 MPa, please…
A:
Q: Bars (1) are made of steel [E = 30,000 ksi], and bar (2) is made of an aluminum alloy [E = 10,000…
A: Stress on a body is a normal force acting on body per unit area which brings about a deformation.…
Q: Two aluminum plates, each having a width of b = 5.6 in. and a thickness of t = 0.725 in., are welded…
A:
Q: 5-77. The steel shaft has a diameter of 40 mm and is fixed at its ends A and B. If it is subjected…
A: Diameter of steel shaft , d = 40mm The applied force, F= 3kN Rigidity modulus of the shaft, Gst =…
Q: The table below shows ultimate tensile strengths (Fu ) and Young's moduli (Y) for tungsten (W) and…
A:
Q: A specimen of a 4340 steel alloy with a plane strain fracture toughness of 54.8 MPa is exposed to a…
A: Given:Fracture toughness,KIC=54.8 MpaParameter,Y=1.734 surface crack,a=0.4534 mm=0.4534×10-3…
Q: 2- The square plate is deformed into the shape shown by the dashed line. Determine the average…
A:
Q: Given a steel with an ultimate Stress of 90 ksi, and an endurance limit(Se) of 45 ksi calculate the…
A: Given: Sut=90 ksi &Se=45 ksi f at Sut 90ksi=0.86 (from graph)
Q: A B C 300 μm Which denotes the apical meristem in roots? B C D A D
A: The correct answer is B.Explanation: The image you sent is a labelled diagram of the tip of a root,…
Q: A string or rope will break apart if it is placed under too much tensile stress. Thicker ropes can…
A: Step 1:Step 2:Step 3:
Q: The vibrational motion of H2 can be described as a harmonic oscillator with v = 4401.21 cm^-1.…
A:
Q: (a) Solve Equations 11.3 and 11.4 for cos 8. (b) Determine the relationship between cos 8 and pb,…
A: Given : Three equations Q=Ty+Tb-Tx-Ta ---(1)Pa=Pbcosθ+Pycosα ---(2)0=Pbsinθ-Pysinα…
Step by step
Solved in 3 steps with 5 images
- The strain components εx, εy, and γxy are given for a point in a body subjected to plane strain. Determine the principal strains, the maximum in-plane shear strain, and the absolute maximum shear strain at the point. Show the angle θp, the principal strain deformations, and the maximum in-plane shear strain distortion on a sketch. εx = -750 με, εy = -345 με, and γxy = 1250 μrad. Enter the angle such that -45°≤θp≤ +45°.In a standard tensile strain test, a 20 mm diameter aluminum rod is subjected to a tensile force of P = 30KN. If μ = 0.35 (Poisson's ratio) and E = 70 GPa (Young's modulus), determine: a) The elongation of the rod in a calibrated length of 150 mm and b) The change in the diameter of the rodH.W A uniform glass rod having a length L is placed in the smooth hemispherical bowl having a radius r. Determine the angle of inclination 0 for equilibrium. Ans: L+VL+128r 2NCOSO No 0 = cos %3D 16r Note: By observation = 0.
- if Vf=0.8 (volume fraction fiber) longitudinal modulus=? poisson's ratio=? in-plane shear stress=?Problem 3: Suppose a 62-kg mountain climber has a 0.84 cm diameter nylon rope. Randomized Variables m = 62 kg d = 0.84 cm 1=31 m By how much does the mountain climber stretch her rope, in centimeters, when she hangs 31 m below a rock outcropping? Assume the Young's modulus of the rope is 5 x 10° N/m². AL=A high-carbon steel with a fully pearlitic microstructure was used to form a high-strength bolt (H.-C. Lee et al., J. Mater. Proc. Tech. 211, 1044 (2011)). It was found that the bolt head had an average interlamellar spacing of 257 nm whereas the average spacing in the body of the bolt was 134 nm. Assuming that dislocation pileup is the primary mechanism responsible for the strength of this alloy, what ratio of strength (or hardness) might be expected in the head and body of the bolt?