MEE 324 Lab 2

A sample of crosslinked polvisoprene rubber undergoes a constant strain rate axial tension experiment The initial sample measurements are 3.60 cm gauge length (axial direction); 0.b2 cm wide; 0.1/ cm thick:

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I Review Learning Goal: Part A- Vertical impact To calculate displacement and stresses due to vertical and horizontal impact loads. A 10-kg block is dropped from 1.5 m onto the center of a simply supported beam with a length 3 m. The beam has a square section with side length 6.5 cm. The material has E = 200 GPa . What is the maximum deflection? When an object strikes a structure that responds by deforming in linear elastic fashion, the object comes to rest when the structure has undergone maximum deflection. At that moment, the structure's strain energy must equal the sum of the energies before the impact, including both the object's kinetic energy and its gravitational potential energy. Express your answer with appropriate units to three significant figures. > View Available Hint(s) When an object falls from rest onto a structure, the object's gravitational potential energy is converted into strain energy in the structure. The total strain energy in the structure at the point of…

Question 2 In designing prosthetic sockets, the latter will need to be experimentally tested for their structural integrity. Figure 2 shows one such design of a prosthetic socket which is made of carbon fibre composite. Strain gauges are installed to record the strains at various locations of the legs during walking and the readings are recorded using a telemetry system to detemine the critical stressed area. At a particular strain gauge location indicated in Figure 2, the readings recorded by one of the 45° strain gauge rosettes are: Ea = 2500 x 10*, es = 1500 x 10°, & = -950 x 10* Using Mohr's Cicle or otherwise, detemine: (a) the principal strains and the direction of the maximum principal strain relative to the gauge "a". (b) the corresponding principal stresses and sketch the results on a properly oriented element. You may assume that the prosthetic socket is made of polypropylene whose Young's modulus of 1.0 GPa and Poisson ratio of 0.3. Figure 2

The answer is one of the options below please solve carefully and circle the correct option Please write clear .

Select one or more: a. 28.6 Ob. 22.8 O c. 3.7 Od. No Oe. 4.9 Of. Yes 0 8 9 10 11 12 13 14 15 g. 18.5 295 293 280 288 263 290 298 275

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need help with this review question  Engineering of Materials  I got   3,75*10-4 and 6.375*10-4 answers but there incorrect Part B

Pls answer thank you! A rectangular bar with a breadth equals four times the thickness is designed to resist pure tensions of 1,815 kg based on a factor of safety of 2.5. The tensile strength of the material is 1.21 MPa. What is the thickness of the bar?

Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt- chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows... A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some magnitude F produces a 7x10³ mm change in diameter (see figure below, original shape is blue, elongated shape is unshaded). Q1H: Provide a brief rationale based on calculations used to support your answer. That is, how would you explain the behavior of the "new alloy" material to your design team? Table of properties: Assume Poisson's ratio is 0.3 for all materials Process Elastic Modulus (GPa) Material CoCr F75 As cast/Annealed 210 CoCr F90 Hot forged New alloy Z X ↑ F df O 210 110 Yield Strength (MPa) 450-517 900-1200 600 Tensile Strength (MPa) 655-890 1400-1600 700

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Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt- chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows... A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some magnitude F produces a 7x10-³ mm change in diameter (see figure below, original shape is blue, elongated shape is unshaded). Q1E: Of those two materials (F75 CoCr alloy (as cast) and F90 CoCr alloy (hot forged)), which materials would you select to assure that the deformation is entirely elastic (No yield!)?

Question 1 You are working on a design team at a small orthopaedic firm. You have been asked to select a cobalt- chrome-molybdenum (CoCr) material that will not experience plastic deformation under a specific mechanical test, as follows... A tensile stress is applied along the long axis of a solid cylindrical rod that has a diameter of 10 mm. An applied load of some magnitude F produces a 7x10-³ mm change in diameter (see figure below, original shape is blue, elongated shape is unshaded). Q1G: If your design required using the new material to create a wire, what is the largest diameter that would lead to ductile behavior while still avoiding plastic deformation when exposed to the above loading conditions?

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please solve part b, this is past paper and just iam studying, mechanical engineering

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You are testing a rectangular aluminum beam in flexure using cyclical loading. The peak load after the first cycle is 90 lbs. The peak load of the final cycle is 140 lbs. What is the experimental error of the shape factor. 140 Load (lbf) 2. 0.4 0.6 Deflection (in) 90 0.2 0.8 1.0

m2

M=E/p². (b) Show that the lightest cantilever beam of length L and square section (area free) that will not deflect by more than 8 under an end load F is that made of the material with the largest value of M = Ep (neglect self-weight). loungs modulusE GPa Plot each index on the given (E- p) chart indicating the search area for materials with the highest values of each. 1000 HINT: Start each of the problem by listing the function, the objective and the constraints. You will need the equations for the deflection of a cantilever beam with a square cross-section t x t. You can either derive the equations or use the equations provided in Appendix B, Section B3. 100 10 1 10-1 10-2 Loungs modulus density 10-4 Longitudinal wave speed 10 ms 3x10² Foams. 10 ms- 10-3 3x10² Rigid polymer foams 10 ms Technical ceramics Al alloys Composites CFRP Glass Bamboo Mg alloys GFRP Wood Flexible polymer foams Natural PMMA- materials PA grain Cork PS Wood grain Leat e EVA Isoprene Buty rubber B4C. Polyester…

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6. State your answers to the following questions.Strain Gauge represents the deformation of a material through a change in resistance. If so, explain how temperature will affect the strain gauge in the experimental environment.①:In this experiment, the Strain Gauge measures the strain in micro units. Explain one possible error factor when applying a load by hanging a weight on the material with the strain gauge attached. (Hint: It is easy to shake by hanging the weight using a thread)①:

%4۹ ۱:۳۶ i ocs.google.com o أي اجابة بدون الاسم و الرسومات الضرورية Draw the F.B.D. for the beam shown in fig and then find the * ? reactions at A and B L---x 160 lb/ft 5' إضافة ملف إرسال رجوع عدم إرسال كلمات المرور عبر نماذج Go ogle مطلقا. تم إنشاء هذا النموذج داخل Mustansiriyah University. الإبلاغعن. إساءة الاستخدام نماذج Go ogle II

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Mechanical Engineering MENG222 Strength of Materials My student number 18700053 Please solve it very quickly ?? 1.Draw neat, labelled diagrams. 2. Write relevant equations. 3. Be clear and specific and include units in answers. 4. Give explanatory notes where necessary

12.44 A three-point bending test is performed on a O spinel (MgAl,O4) specimen having a rectangular cross section of height d = 3.8 mm (0.15 in.) and width b = 9 mm (0.35 in.); the distance between support points is 25 mm (1.0 in.). (a) Compute the flexural strength if the load at fracture is 350 N (80 lb;). (b) The point of maximum deflection Ay occurs at the center of the specimen and is described by FL³ Ay = (12.11) 48EI where E is the modulus of elasticity and I is the cross-sectional moment of inertia. Compute Ay at a load of 310 N (70 lb¡).

You have been given the following test sample data following mechanical testing of 15 test pieces of Silicon Nitride. What is the Weibull modulus of this material? Would you advise the use of a similar material with a Weibull Modulus of 16.3 and a mean failure stress of 485 MPa, if you anticipate that the peak stress on the material could be 430 MPa? Sample 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Select one or more: O a. No O b. 18.6 O C. 13.4 O d. Yes O e. 15.7 f. 17.1 Failure Stress (MPa) 423 459 496 432 447 467 473 499 485 479 505 530 526 490 510 <

A three-point bending test was performed on an aluminum oxide specimen having a circular cross section of radius 5.6 mm; the specimen fractured at a load of 4280 N when the distance between support points was 43 mm. Another test is to be performed on a specimen of this same material, but one that has a square cross section of 18 mm in length on each edge. At what load would you expect this specimen to fracture if the support point separation is maintained at 43 mm? Ff= N

Answers must be at least in 4 decimal places.

6.24 A cylindrical rod 120 mm long and having a O diameter of 15.0 mm is to be deformed using a tensile load of 35,000 N. It must not experience either plastic deformation or a diameter reduc- tion of more than 1.2 × 10-² mm. Of the following materials listed, which are possible candidates? Justify your choice(s). Modulus of Elasticity (GPa) Yield Strength Poisson's (MPa) Material Ratio Aluminum alloy 70 250 0.33 Titanium alloy 105 850 0.36 Steel alloy 205 550 0.27 Magnesium alloy 45 170 0.35

Choose correct answer: Which of the following statement is false related to the theory of simple bending.   The transverse section of the beam is in-plane before and after. Radius of curvature is large. The material is homogenous The value of Young's modulus is not same

TOPIC: ELASTICITY A load of 50 kg is applied to the lower end of a steel rod 80 cm long and 0.60 cm indiameter. How much will the rod stretch? Y = 190 GPa for steel.   Please help me solve this problem with complete solution and box the final answer. Please also draw an illustration based from the given. Thank you!