A strip of high-strength steel has a length of 30 cm and a cross section of 1 mm by 20 mm. The modulus of elasticity is 200 GPa and Poison’s ratio is 0.27. It is subjected to an axial load of 15000 N, and it is instrumented with two axial strain gauges with R= 120 Ω and a gauge factor of 2.10. The two fixed resistors are also 120 Ω, and the supply voltage is 2.5 V. The bridge is adjusted to zero voltage output before load is applied. Find the output of the bridge with load applied.

Q: a. Which of the following gives the approximate modulus elasticity of the The stress-strain diagram…

A: Solution;

Q: An aluminum alloy [E = 70 GPa; v = 0.33; a = 23.0×10-6/°C] bar is subjected to a tensile load P. The…

A:

Q: The minimum strain at failure in tension steel having yield stress modulus E = 200 GPa, as per Limit…

A:

Q: Question 3 o(MPa) The elastic portion of the stress-strain diagram for a steel alloy is shown in the…

A: GIVEN DATA:- ORIGINAL DIAMETER=15MM ORIGINAL LENGTH=60MM INITIAL APPLIED LOAD=20KN FINAL DIAMETER…

Q: A 300 mm Long copper wire of uniform cross-section is pulled in tension so that a maximum tensile…

A: Given that :-   Maximum tensile stress = σ = 270 MPa Length = L = 300 mm Modulus of elasticity = E =…

Q: Problem 2: A bronze bar is fastened between a steel bar and an aluminum bar as shown. Axial loads…

A: Est=200GPa Eal=70GPa Ebr=83GPa Overall deformation= 3mm

Q: A nylon thread is subjected to a 8.5-N tension force. Knowing that E 3.3 GPa and that the length of…

A:

Q: SITUATION 31 A solid mild-steel is rigidly clamped at one end and subjected to an applied torque T =…

A:

Q: R14-7 The principal stresses at a point are shown in the figure. If the material is A36 steel,…

A: Given data: The stress along the plane 1 is 84 MPa The stress along plane 2 is 56 MPa The stress…

Q: Testing a round steel alloy bar with a diameter of 15 mm and a gauge length of 250 mm produced the…

A: Draw the cure with markings:

Q: A copper bar is of uniform cross-section and is rigidly attached to the walls as shown. The rod is…

A:

Q: 5. Problem Statement: At room temperature (20°C) a 0.5-mm gap exists between the ends of the rods…

A: Given data: Aluminium: AAL=2000 mm2E=75 GPaα=23×10-6 /CSteel:AST=800 mm2E=190 GPaα=17.3×10-6 /C

Q: The stresses on the surface of a cast iron machine component are sx = 85 MPa, =-230 MPa, and fy =…

A:

Q: y 400 mm a 200 mm A 150 N a 10 mm В A Section a –a

A:

Q: A bar of length 2.0m is made of a structural steel having the stress-strain diagram shown in the…

A:

Q: The assembly shown consists of an aluminum shell (E, = 70 GPa, aą = 23.6 × 106PC) fully bonded to a…

A: We will use equillibrium and Axial deformation equation.

Q: The aluminum shell is fully bonded to the brass core, and the assembly is unstressed at a…

A: Given Data:Temperature of 78°FChange in Temperature = 210°FBrass…

Material Properties

Construction in civil engineering demands high strength, durability, and longevity. These targets can be achieved by better design and analysis, along with the correct choice of materials. Different materials have different properties and hence, they respond and performs differently under the various condition of external loadings. It is therefore a critical task of an engineer to select the right material based on the property that the material is supposed to function in real-time. When speaking about the property, there are different categories of material properties like chemical property, physical property, mechanical property, electrical property, magnetic property, thermal property, etc. These material properties form the basis of material selection in various applications.