Knecht Chapter 21 Review Questions

a-c explained fully please thanks!

9) Identify the additional materials with their shapes used for connections in wood design. For each provided, identify the stresses that must be resists or transferred and on what part(s).

slove 1,2 and 3

The design of an aircraft fuselage skin requires sufficient strength and stiffness in both the longitudinal and hoop direction. Based on this information alone, which of the following material options would be the best option? A) Aluminum 2024-T3  B) Unidirectional glass/epoxy laminate      Which of the statements below on the Euler buckling load is correct? A) If the axial load increases, the Euler buckling load will go up. B) If the axial load decreases, the Euler buckling load will go up. C) If the lateral load increases, the Euler buckling load will go up. D) If the lateral load decreases, the Euler buckling load will go up.   Is the following statement true or false: A structure does not need to break (ie: fracture) in order to fail.   Select whether the following statement is true or false: Structural safety is solely the responsibility of the aircraft manufacturer and the airworthiness authorities.   Select whether the following statement is true or false: Damage tolerance is…

Select the correct statement: (assume the replacement beam is of the same shape. Another solution to the problem would be to increase the size of the beam. This is a simplified case, there are many considerations in choosing materials for support beams (flammability, cost, behaviors in different temperatures and humidity environments, brittleness, availability,...) a. The stress on that supporting beam is causing too much strain. We should replace it with a material that has a lower Young's Modulus. O b. The stress on that supporting beam is causing too much strain. We should replace it with a material that has a larger Young's Modulus. С. The strain on that supporting beam is causing too much stress. We should replace it with a material that has a larger Young's Modulus. d. The strain on that supporting beam is causing too much stress. We should replace it with a material that has a lower Young's Modulus.

Task 2 The company is also interested in expanding its production capability into composite based products. You have been asked to identify typical products manufactured using selected composite processes and then describe how the properties of the composite make this a suitable process for the product. Briefly describe the process and then identify at least one type of product which can be manufacturing using this process. Then describe the properties that make the composite and process suitable for that application. · Manual and automated layup · Filament winding · Pultrusion · Resin Transfer Moulding

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A transverse force applied to a cantilever beam develops bending. Stress is within the elastic range but is too high. Which of the following statements best describes the optimal solution to reduce stress?   A. Increase the length B. Increase the axial moment of inertia C. Reduce the cross-sectional area. D. Change to a stronger material (without changing the dimensions). E. Reduce the height of the beam.

Write a sale pitch for a truss bridge type. I choose A pratt truss bridge

Discuss how to prevent the twisting of a beam when it supports a load?

What two things influence the properties of concrete masonry units?

How the concept of deflection of beam is used in aeroplane wing?

Can you please answer these 3 questions from material engineering.....