| 摘要 |
A turbine engine shroud segment (12) is provided with a radially outer surface (24) including a pair of spaced apart, opposed first and second edge portion surface depressions (28,30), for example spaced circumferentially (16), having a seal surface (40) shaped to receive, in a surface depression (36) formed between assembled adjacent segments (12,14) in a shroud assembly (10), or axially (18) assembled adjacent segments (12,14) and engine members, a radially outer fluid seal member (44). The depression portions (28,30) of a shroud segment are joined with the radially outer surface (24) of the shroud segment (12/14) through an arcuate transition surface (42). Stresses generated during engine operation in the shroud material are reduced, enabling practical use of a low ductility material, for example a ceramic matrix composite. The edge portion surface depressions (28,30) are provided with a first shape and the fluid seal member (44), disposed at the depression (28,30), is provided with a surface (46) of a second shape matched in shape with the first shape.
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