The elastic modulus and tensile strength of the poly (methyl methacrylate) from the stress strain data given in Figure 15.3 at room temperature

Answer to Problem 1QAP
The calculated elastic modulus of the poly (methyl methacrylate) is slightly greater than the maximum value of elastic modulus given in the Table 15.2 that is
The tensile strength (stress) found from the Figure 15.3 (
Explanation of Solution
Write the relation between elastic modulus, tensile strength and strain.
Here,
Conclusion:
Refer to Figure 15.3. “The influence of temperature on the stress strain characteristics of poly (methyl methacrylate)”.
The stress and strain corresponding to the temperature curve of
From Figure 1.
Let, the initial stress and strain corresponding to the temperature curve of
Let, the final stress and strain corresponding to the temperature curve of
Calculate the elastic modulus.
Substitute
Thus, the elastic modulus of poly (methyl methacrylate) is
Refer to Table 15.2, “Room-Temperature
The elastic modulus corresponding to poly (methyl methacrylate) is
Hence, the calculated elastic modulus of the poly (methyl methacrylate) is slightly greater than the maximum value of elastic modulus given in the Table 15.2 that is
From Figure 1.
The tensile strength (stress) at the end of the curve corresponding to the temperature curve of
Refer to Table 15.2, “Room-Temperature mechanical characteristics of some of the more common polymers”.
The tensile strength (stress) corresponding to poly (methyl methacrylate) is
Hence, the tensile strength (stress) found from the Figure 15.3 (
Want to see more full solutions like this?
Chapter 15 Solutions
MATERIALS SCI + ENGR: INT W/ACCESS
- Don't use ai to answer I will report you answerarrow_forwardCalculate the BMs (bending moments) at all the joints of the beam shown in Fig.1 using the slope deflection method, draw the resulting shear force diagran and bending moment diagram. The beam is subjected to an UDL of w=65m. L=4.5m, L1= 1.8m. Assume the support at C is pinned, and A and B are roller supports. E = 200 GPa, I = 250x106 mm4.arrow_forwardProblem 2 (A is fixed and C is a pin) Find the reactions and A and C. 10 k- 6 ft 6 ft B A 2 k/ft 15 ftarrow_forward
- 6. A lake with no outlet is fed by a river with a constant flow of 1200 ft3/s. Water evaporates from the surface at a constant rate of 13 ft3/s per square mile of surface area. The surface area varies with the depth h (in feet) as A (square miles) = 4.5 + 5.5h. What is the equilibrium depth of the lake? Below what river discharge (volume flow rate) will the lake dry up?arrow_forwardProblem 5 (A, B, C and D are fixed). Find the reactions at A and D 8 k B 15 ft A -20 ft C 10 ft Darrow_forwardProblem 4 (A, B, E, D and F are all pin connected and C is fixed) Find the reactions at A, D and F 8 m B 6m E 12 kN D F 4 marrow_forward
- ##2# Superheated steam powers a steam turbine for the production of electrical energy. The steam expands in the turbine and at an intermediate expansion pressure (0.1 Mpa) a fraction is extracted for a regeneration process in a surface regenerator. The turbine has an isentropic efficiency of 90% Design the simplified power plant schematic Analyze it on the basis of the attached figure Determine the power generated and the thermal efficiency of the plant ### Dados in the attached imagesarrow_forwardProblem 1 (A, C and D are pins) Find the reactions and A, C and D. D 6 m B 12 kN/m 8 m A C 6 marrow_forwardUniform Grade of Pipe Station of Point A is 9+50.00. Elevation Point A = 250.75.Station of Point B is 13+75.00. Elevation Point B = 244.10 1) Calculate flowline of pipe elevations at every 50 ft. interval (Half Station). 2) Tabulate station and elevation for each station like shown on example 3) Draw Sketcharrow_forward
- ### To make a conclusion for a report of an experiment on rockets, in which the openrocket software was used for the construction and modeling of two rockets: one one-stage and one two-stage. First rocket (single-stage) reached a maximum vertical speed of 100 m/s and a maximum height of 500 m The second rocket (two-stage) reached a maximum vertical speed of 50 m/s and a maximum height of 250 m To make a simplified conclusion, taking into account the efficiency of the software in the study of rocketsarrow_forwardThe images I have uploaded are the part 1 to 4 and questions below are continue on the questions uploaded 5. C++ Class Template with Method Stubs #pragma once #include <iostream> #include <string> #include <stdexcept> #include <vector> template <typename T> class HashTable { private: struct Entry { std::string key; T value; bool isOccupied; bool isDeleted; Entry() : key(""), value(), isOccupied(false), isDeleted(false) {} }; Entry* table; size_t capacity; size_t size; double loadFactorThreshold; size_t customHash(const std::string& key) const { size_t hash = 5381; for (char c : key) { hash = ((hash << 5) + hash) + c; } return hash; } size_t probe(const std::string& key, bool forInsert = false) const; void resize(); public: // Constructor HashTable(size_t initialCapacity = 101); // Big…arrow_forwardDetermine the coefficients of polynomial for the polynomial function of Cam profile based on the boundary conditions shown in the figure. S a 3 4 5 C₁ (+) Ꮎ В s = q + q { + c f * + q € * + q ( +c+c+c 6 Ꮎ +C5 +C β В В 0 cam angle 0 B 7 (arrow_forward
- MATLAB: An Introduction with ApplicationsEngineeringISBN:9781119256830Author:Amos GilatPublisher:John Wiley & Sons IncEssentials Of Materials Science And EngineeringEngineeringISBN:9781337385497Author:WRIGHT, Wendelin J.Publisher:Cengage,Industrial Motor ControlEngineeringISBN:9781133691808Author:Stephen HermanPublisher:Cengage Learning
- Basics Of Engineering EconomyEngineeringISBN:9780073376356Author:Leland Blank, Anthony TarquinPublisher:MCGRAW-HILL HIGHER EDUCATIONStructural Steel Design (6th Edition)EngineeringISBN:9780134589657Author:Jack C. McCormac, Stephen F. CsernakPublisher:PEARSONFundamentals of Materials Science and Engineering...EngineeringISBN:9781119175483Author:William D. Callister Jr., David G. RethwischPublisher:WILEY





