Structural Analysis of Polymeric Composite Materials 2nd. Edition by Tuttle, Mark E. | 9780824747176 | 0824747178 | Holooly

Structural Analysis of Polymeric Composite Materials [EXP-45878]

52 SOLVED PROBLEMS

Question: 12.1

A [(±45/0)2]s graphite–epoxy laminate is cured at 175°C and then cooled to room temperature (20°C). After cooling, the flat laminate is trimmed to in-plane dimensions of 300 × 150 mm and mounted in an assembly that provides type S4 simple supports along all four edges. The x-axis is defined

Verified Answer:

Based on the properties listed in Table 3.1 for gr...

Question: 6.2

A [(0/ ± 30/90)2/45/20]s laminate is fabricated using a graphite–epoxy material system. Each ply has a thickness of 0.125 mm. Determine the number of plies in the laminate, the total laminate thickness, and the z-coordinate of each ply interface.

Verified Answer:

An ordered listing of all fiber angles that appear...

Question: 11.5

A [(02/90)2]s graphite–epoxy laminate is cured at 175°C and then cooled to room temperature (20°C). After cooling the flat laminate is trimmed to in-plane dimensions of 300 × 150 mm and mounted in an assembly that provides type S4 simple supports along all four edges. The x-axis is defined

Verified Answer:

A [(02/90)2]_s

graphite–epoxy lamin...

Question: 11.2

A [(02/90)2]s graphite–epoxy laminate is cured at 175°C and then cooled to room temperature (20°C). After cooling the flat laminate is trimmed to in-plane dimensions of 300 × 150 mm and mounted in an assembly that provides type S4 simple supports along all four edges. The x-axis is defined

Verified Answer:

A [(0_2/90)2]_s

graphite–epoxy lami...

Question: 11.1

A [(02/90)2]s graphite–epoxy laminate is cured at 175°C and then cooled to room temperature (20°C). After cooling the flat laminate is trimmed to inplane dimensions of 300 × 150 mm and mounted in an assembly that provides type S1 simple supports along all four edges. The x-axis is defined parallel

Verified Answer:

The rectangular plate is a 12-ply laminate with to...

Question: 11.3

A [(02/90)2]s graphite–epoxy laminate is cured at 175°C and then cooled to room temperature (20°C). After cooling, the flat laminate is trimmed to in-plane dimensions of 300 × 150 mm and mounted in an assembly that provides type S2 simple supports along the two edges x = 0 and x = a, and type S1

Verified Answer:

A [(02/90)2]s graphite–epoxy laminate was also con...

Question: 11.4

A [(02/90)2]s graphite–epoxy laminate is cured at 175°C and then cooled to room temperature (20°C). After cooling, the flat laminate is trimmed to in-plane dimensions of 300 × 150 mm and mounted in an assembly that provides type S4 simple supports along all four edges. The x-axis is defined

Verified Answer:

A [(0_2/90)2]_s

graphite–epoxy lami...

Question: 7.1

A [0/30/60]s graphite–epoxy specimen machined from a panel produced at a cure temperature of 175°C is tested at room temperature (20°C). A uniaxial tensile load Nxx is applied. Predict the first-ply failure load, assuming the laminate is stress-free at the cure temperature,*and that no change in

Verified Answer:

Many of the calculations needed to solve this prob...

Question: 12.3

A [25°]12 graphite–epoxy laminate is trimmed to in-plane dimensions of 300 × 150 mm and mounted in an assembly that provides type S4 simple supports along all four edges. The laminate is then subjected to a uniform transverse load q(x,y) = 30 kPa. No in-plane loads are applied

Verified Answer:

Note that the plate has an aspect ratio R = 150/30...

Question: 6.7

A [30/0/90]T graphite–epoxy laminate is cured at 175°C and cooled to room temperature (20°C). Initially the moisture content of the laminate is zero. However, the laminate is subjected to a humid environment for several weeks, resulting in an increase of moisture content of 0.5% (by weight).

Verified Answer:

Note that this is the same laminate considered in ...

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