(a) Nonpolarized white light. 



(b) Circularly polarized white light. 



Figure B-2. Residual stress raiser in the form of a local trepanning and recasting 

 operation performed on an excessively large air cavity formed at the 

 interface between two successive pours of the PS-18 adhesive bonding 

 the joints of the prototype 66-inch capsule. 



179 



