A high-strength steel band saw, 24 mm wide, runs over pulleys 800 mm in diameter. What minimum thickness of the steel band can be used without exceeding a flexural stress of 280? Assume E = 230 GPa. Answer must be in mm.
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- A tensile test was performed on a metal specimen having a circular cross section with a diameter 0. 510 inch. For each increment of load applied, the strain was directly determined by means of a strain gage attached to the specimen. The results are, shown in Table: 1.5.1. a. Prepare a table of stress and strain. b. Plot these data to obtain a stress-strain curve. Do not connect the data points; draw a best-fit straight line through them. c. Determine the modulus of elasticity as the slope of the best-fit line.A 2500 lb horizontal bar is supported by three 3/16-inch diameter wires as shown. The wires are symmetrically spaced and 20 feet long. The two outer wires are steel and the middle wire is brass. Calculate: a) Stresses in the wiresSHOW COMPLETE ANSWER AND ILLUSTRATION FINAL ANSWER IN 3 DECIMAL PLACES Problem 3: A steel wire 10 m long, hanging vertically supports a tensile load of 2 kN. 1. Determine the required diameter if the stress is not to exceed 140 MPa and the total elongation is not to exceed 5 mm. Use E = 200 GPa. Neglect the weight of the rod. 2. Determine the required diameter if the stress is not to exceed 140 MPa and the total elongation is not to exceed 5 mm. Use E = 200 GPa. Consider the weight of the bar and = 7,850 kg/m3
- A steel rod with a cross sectional area of 120〖mm〗^2 is stretched between two fixed points. The tensile load at 20°C is 4200N. What will be the stress at-25°C? α=11.7x〖10〗^(-6)/°C and E = 200GPa. See figure 06A 3-m long steel plate having a cross-section of 25 mm x 300 mm is used as a hanger and subjected to a tensile load of 1070 kN. Poisson’s Ratio = 0.25 and E = 200 000 MPa. Compute the lateral strain. Express your answers in 6 decimal places.What maximum load P can be applied without exceeding an allowable stress of 70 MPa for aluminum or 120 MPa for steel? Can a larger load P be carried if the length of the aluminum rod is changed. the length of the steel portion being kept the same? If so, determine this length
- !! Show Complete & Detailed Solution w/ FBD !!The bronze bar 3 m long with a cross-sectional area of 350 mm^2 is placed between two rigid walls. At a temperature of –25C, there is a gap = 2.5 mm, as shown in the figure. Find the temperature at which the compressive stress in the bar will be 30 MPa. Use α = 18.0 x 10–6 /C and E = 80 GPa.If the yield stress in part c is considered failure stress, what is the maximumworking stress to be applied to this material if a factor of safety of 1.5 is used?In the figure below, the wood pole is supported by cables of 0.32-in diameter. The turnbuckles in the cables are tightened until the stress in the cables reaches 60000psi. If the working compressive stress for the wood is 216psi. Determine the smallest permissible diameter of the pole.___________inches in 2 decimal places. Take note: Write it on a paper, hand written showing answer. Thanks
- Define the terms shear stress and shear strain, illustrating your answer by meansof a simple sketch. Two circular bars, one of brass and the other of steel, are to beloaded by a shear load of 30 kN. Determine the necessary diameter of the bars (a) insingle shear, (b) in double shear, if the shear stress in the two materials must notexceed 50 MN/m2and 100 MN/m2respectively.A beam has a width of 200mm and a height of 250mm and is loaded as shown. Compute the maximum shear stress. Show computation and present detailed drawings/FBD’s illustrating your solution.Please show intermediate steps including free body diagrams, equations used, and problemsetup so that your approach can be followed. A nylon thread is subjected to a 2-lb tension force. Knowing that E = 0.5 x 10^6psi and that the maximum allowable normal stress is 6 ksi,determine (a) the required diameter of the thread, (b) the corresponding percent increase inthe length of the thread.