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Compute the stresses (laminate coordinates) at z = -1.27 mm using the results of Problem 1.
Compute the [Q] matrix of a lamina reinforced with a balanced bidirectional fabric selected from Table.
Plot the strain and stress distribution (?x and sy) through the thickness of the bimetallic analyzed in Problem 1.
Compute the volume fraction Vf as a function of the fiber diameter df and the spacing between the centers of the fibers ax and ay in the two directions.
Consider the following material called carbon-epoxy with a fiber volume fraction of 70% and E= = 379 GPa, ?f = 0.22, Em= 3.3 GPa, and ?= = 0.35.
The container weighs 47.650 grams. Compute the fiber weight fraction WF and matrix weight fraction WM.
Estimate the effect of misalignment on the compressive strength of a carbon- epoxy (AS4-3501) composite fabricated by hand lay-up of prepreg tape
Define the plane stress assumption used in the context of laminated composite materials?
Compute the transformation matrix for a lamina oriented at 45? with respect to the x-axis.
Is the cross-section under a uniaxial state of strain in the laminate coordinates? Explain the origin of each nonzero strain.
Compute the transformed reduced stiffness for the material of Exercise 1 at ? = 45? and ? = 90?.
The load factor a that can be tolerated for the lamina with optimum orientation, considering all possible modes of failure and a resistance factor Ø = 1.0.
Calculate the % change needed on the stress in Problem 1 to achieve a reliability of 99.5%.
Calculate the load and resistance factors using the data of Problem 1 and a reliability of 99%.
Calculate the load and resistance factors for a reliability of 99% when the strength has a mean value of 65.4 MPa and COV 22%.
What is the required wall thickness (t = tf +tm) and fiber type that yields the minimum thickness ?
Compare the flexural modulus and strength at 249?C (dry) of clear cast bismaleimide 792/TM-123 with an extrapolation of the room temperature.
Calculate the reduced stiffness matrix in laminate coordinates of the fill and warp tows in Problem 2 .
Calculate the corresponding stress level in fill and warp, at the same location, in material coordinate system.
Use the computer program available on the Web site to calculate the tensile and shear strength values Fxt, Fxy of sample type .
Determine the Euler buckling load of a column clamped at the base and free at the loaded end.
Determine an approximate estimate for the load P that causes local buckling to a column with the dimensions and material of Example.
A simply supported rectangular beam (solid) of length L = 100 mm, width b = 10 mm is made of a [±45/02]S glass-polyester laminate with each lamina 0.125 mm.
Compute the deflection as a function of P and the maximum load that can be applied to the beam for first ply failure.
Design a box section to be used as a cantilever beam of length L = 2 m subject to a tip load P = 1000 N.