Archive image from page 71 of Development of a spherical acrylic. Development of a spherical acrylic plastic pressure hull for hydrospace application . developmentofsph00stac Year: 1970 Figure 41. Residual stresses in a solvent-bonded 15-inch-diameter capsule not removed by annealing operation; maximum shear stress approximately 1,300 psi. The advantages of this bonding technique are: (1) the dimensional tolerances of spherical pentagons being bonded need not be tight because reasonable dimensional deviations are taken care of by the inch-wide joint space, (2) there is no requ
Archive image from page 71 of Development of a spherical acrylic. Development of a spherical acrylic plastic pressure hull for hydrospace application . developmentofsph00stac Year: 1970 Figure 41. Residual stresses in a solvent-bonded 15-inch-diameter capsule not removed by annealing operation; maximum shear stress approximately 1,300 psi. The advantages of this bonding technique are: (1) the dimensional tolerances of spherical pentagons being bonded need not be tight because reasonable dimensional deviations are taken care of by the inch-wide joint space, (2) there is no requirement for clamping forces on the members being bonded, (3) irregularly shaped surfaces can be joined, providing the joint space can be sealed on both sides with adhesive tape, (4) there is no requirement for fine finish on the acrylic plastic surfaces forming the two sides of the joint, and (5) the bonding of a large structure can proceed by small increments with each joint increment becoming set before the next pouring is performed. 68
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