Exams are closed book, except for one 8.5"x11" page, written in any density (you may bring a
magnifier if you wish to write very small).
Additional material and sample problems for make-up exam
Material: Uncertainty in woven composites and shear deformati

EAS4240/6939 Project Phase I
A cylindrical pressure vessel of radius 2m is to be designed for pressure of 0.8 MPa (about eight
atmospheres). If the pressure vessel were to be designed from aluminum with a yield stress of 500 MPa,
=
t
then it would be desi

EAS4240/6939 Project Phase II
This phase is customized so that different students use somewhat different data. The data is determined
by the first and last letter of your last name (as it appears on Sakai). The dimensions of the plate for
students whose l

Aerospace Structural Composites (Spring 13)
Homework 4 Solution
Raja Ganesh
Exercise 7: Repeat eg. 4.2.5 with a symmetric and balanced laminate made of 00 and 300 layers.
Since the laminate is symmetric and balanced, we need to use only two design variabl

Aerospace Structural Composites I
Homework 7
Anirban Chaudhuri and Raja Ganesh
1. Find 16-ply laminates that have exactly or close to the following bending lamination
parameters (A) W1*= 0, W3*= -0.5; (b) W1*= 0.5, W3*= 0.5. For both cases use first lamin

Aerospace Structural Composites I
Homework 6
Anirban Chaudhuri & Raja Ganesh
1. Derive the strength coefficients F, G, H, P, Q, R, L, M, and N for Hoffmans strength criterion
of Eq. (6.2.13). Plot the failure envelope and show the load limits under biaxia

Aerospace Structural Composites I
Homework 2
Anirban Chaudhuri and Raja Ganesh
1. Material A has Youngs modulus of 10 Msi, and a shear modulus of 4 Msi, and
Material B has a Young modulus of 20 Msi and a Poissons ratio of 0.5. Design a
laminate made of th