涡轮叶片是燃气涡轮发动机中涡轮段的重要组成部件。高速旋转的叶片负责将高

涡轮叶片是燃气涡轮发动机中涡轮段的重要组成部件。高速旋转的叶片负责将高温高压的气流吸入燃烧器，以维持引擎的工作。为了能保证在高温高压的极端环境下稳定长时间工作，涡轮叶片往往采用高温合金锻造，并采用不同方式来冷却例如内部气流冷却、边界层冷却、抑或采用保护叶片的热障涂层等方式来保证运转时的可靠性。在蒸汽涡轮发动机和燃气涡轮发动机中，叶片的金属疲劳是发动机故障最主要的原因。强烈的震动或者共振都有可能导致金属疲劳。工程师往往采用摩擦阻尼器来降低这些因素对叶片带来的损害。

涡轮叶片是燃气涡轮发动机中涡轮段的重要组成部件。 高速旋转的叶片负责将高温高压的气流吸入燃烧器，以维持引擎的工作。 为了能保证在高温高压的极端环境下稳定长时间工作，涡轮叶片往往采用高温合金锻造，并采用不同方式来冷却例如内部气流冷却、边界层冷却、抑或采用保护叶片的热障涂层等方式来保证运转时的可靠性。 在蒸汽涡轮发动机和燃气涡轮发动机中，叶片的金属疲劳是发动机故障最主要的原因。 强烈的震动或者共振都有可能导致金属疲劳。 工程师往往采用摩擦阻尼器来降低这些因素对叶片带来的损害。

Turbine blade is an important component of turbine section in gas turbine engine. The high-speed rotating blades are responsible for sucking the high-temperature and high-pressure air flow into the burner to maintain the operation of the engine. In order to ensure stable and long-term operation in the extreme environment of high temperature and high pressure, turbine blades are often forged with high-temperature alloy, and different cooling methods such as internal air flow cooling, boundary layer cooling, or thermal barrier coating to protect the blades are used to ensure the reliability during operation. In steam turbine engine and gas turbine engine, metal fatigue of blade is the main reason of engine failure. Strong vibration or resonance may cause metal fatigue. Engineers often use friction dampers to reduce the damage caused by these factors.<br>