MATERIAL CONSIDERATIONS FOR GAS TURBINE ENGINES

摘要: Today's turbine engines operate at high thrust-to-weight ratios, pressure ratios and inlet temperatures compared with previous generation engines. To avoid structural failures under the more demanding conditions, significant advances have been made in analytical methods material selection utilization. A general review of engineering materials requirements for engine components ranging from cold section to hot is presented, emphasis on durability. Aspects life philosophy are discussed relation certification agency as extensive validation programs needed support extension. The clearly illustrate need accurate cumulative damage assessment detailed pedigree information. brief discussion defect tolerance some current applications fracture mechanics presented. importance these aspects use strength, temperature widely recognised industry evidenced by rapidly emerging literature.