摘要:
A system and method for monitoring a laser shock peening process includes a sensor connected to a controller. The controller includes an input and a processor. The input is connected to the sensor to receive a signal indicative of a laser shock event at a workpiece. The processor is connected to the input and is configured to determine a time-of-flight of residual energy associated with the laser shock event from the workpiece to the sensor and determine peen quality from the time-of-flight of the residual energy.
摘要:
A method for simultaneously laser shock peening opposite laser shock peening surfaces on opposite sides of an article, such as a gas turbine engine airfoil, with varying thickness using oppositely aimed laser beams and varying surface fluence of the laser beams over the laser shock peening surfaces as a function of the thickness of the article beneath each one of a plurality of laser shock peened spots formed by the beams on the surfaces. The fluence may be equal to the thickness multiplied by a volumetric fluence factor, the volumetric fluence factor being held constant over the laser shock peening surface. The volumetric fluence factor may be in a range of about 1200 J/cm3 to 1800 J/cm3 and more particularly about 1500 J/cm3. Laser beam energy may be varied with a computer program controlling firing of the laser beam.
摘要翻译:一种用于在激光冲击喷丸表面上相对激光冲击喷丸处理的方法,该激光冲击喷丸表面在物品的相对侧上,例如燃气涡轮发动机翼型,具有不同厚度,使用相对目标的激光束,以及激光束在激光冲击喷丸表面上的变化的表面注量 在由表面上的光束形成的多个激光冲击喷丸点的每一个下面的物品的厚度的函数。 流量可以等于厚度乘以体积注量因子,体积注量因子在激光冲击喷丸表面上保持不变。 体积注量系数可以在约1200J / cm 3至1800J / cm 3的范围内,更特别地约在1500J / cm 3的范围内。 激光束能量可以随着控制激光束射击的计算机程序而变化。
摘要:
A method for making a turbine airfoil includes providing a mold core and an outer shell which cooperatively define a cavity in the shape of a hollow airfoil having an outer wall, a root, and a tip. A tip portion of the core extends completely through the portion of the cavity defining the tip of the airfoil. The core is restrained to prevent movement between the core and outer shell. Molten metal is introduced into the cavity and solidified to form an airfoil having at least one outer wall which defines an open tip and a hollow interior. A metallic tip cap is formed on the outer wall which substantially closes off the open tip. The tip cap may be formed by packing the airfoil with metallic powder; and laser sintering the exposed powder so as to form a tip cap which is metallurgically bonded to the outer wall.
摘要:
A method for laser shock peening an article, such as a gas turbine engine airfoil, with varying thickness by varying a surface fluence of a laser beam over a laser shock peening surface as a function of the thickness beneath a laser shock peened spot formed by the beam on the surface. The fluence may be equal to the thickness multiplied by a volumetric fluence factor, the volumetric fluence factor being held constant over the laser shock peening surface. The volumetric fluence factor may be in a range of about 1200 J/cm3 to 1800 J/cm3 and more particularly about 1500 J/cm3. The method may include varying energy in the laser beam using a computer program controlling firing of the laser beam. A device such as an optical attenuator external to a laser performing firing may be used to vary the energy.
摘要翻译:一种通过在激光冲击硬化表面上改变激光束的表面能量密度来改变厚度变化的诸如燃气涡轮发动机翼型的物品的激光冲击冲击的方法,其作为由激光冲击硬化点形成的激光脉冲硬化点下方的厚度的函数 光束在表面。 流量可以等于厚度乘以体积注量因子,体积注量因子在激光冲击喷丸表面上保持不变。 体积注量系数可以在约1200J / cm 3至1800J / cm 3的范围内,更特别地约在1500J / cm 3的范围内。 该方法可以包括使用控制激光束激发的计算机程序在激光束中改变能量。 可以使用诸如在执行烧制的激光器外部的光衰减器的装置来改变能量。
摘要:
A method for simultaneously laser shock peening opposite laser shock peening surfaces on opposite sides of an article, such as a gas turbine engine airfoil, with varying thickness using oppositely aimed laser beams and varying surface fluence of the laser beams over the laser shock peening surfaces as a function of the thickness of the article beneath each one of a plurality of laser shock peened spots formed by the beams on the surfaces. The fluence may be equal to the thickness multiplied by a volumetric fluence factor, the volumetric fluence factor being held constant over the laser shock peening surface. The volumetric fluence factor may be in a range of about 1200 J/cm3 to 1800 J/cm3 and more particularly about 1500 J/cm3. Laser beam energy may be varied with a computer program controlling firing of the laser beam.
摘要翻译:一种用于在激光冲击喷丸表面上相对激光冲击喷丸处理的方法,该激光冲击喷丸表面在物品的相对侧上,例如燃气涡轮发动机翼型,具有不同厚度,使用相对目标的激光束,以及激光束在激光冲击喷丸表面上的变化的表面注量 在由表面上的光束形成的多个激光冲击喷丸点的每一个下面的物品的厚度的函数。 流量可以等于厚度乘以体积注量因子,体积注量因子在激光冲击喷丸表面上保持不变。 体积注量系数可以在约1200J / cm 3至1800J / cm 3的范围内,更特别地约在1500J / cm 3的范围内。 激光束能量可以随着控制激光束射击的计算机程序而变化。
摘要:
A manufacturing system and manufacturing method for adjusting the performance of manufacturing operations or steps in manufacturing components having three-dimensional external structural characteristics. An embodiment of the system broadly comprises: (a) a plurality of manufacturing operations for processing a component having three-dimensional external structural characteristics; (b) at least one analytical device for analyzing at least one characteristic of the component after the performance of one or more manufacturing operations to generate a component data set; (c) at least one data storage device for storing the generated component data sets and for providing at least a relevant portion of accumulated component data; and (d) a communication mechanism for transmitting at least a relevant portion of accumulated component data to one or more manufacturing operations so that the performance thereof can be adjusted in response to the transmitted portion of accumulated component data. An embodiment of the method broadly comprises the following steps: (a) providing a component having three-dimensional external structural characteristics; (b) providing at least a relevant portion of accumulated component data comprising at least two different component data sets; and (c) performing a manufacturing step on the component to provide a processed component, wherein the at least relevant portion of accumulated component data is used to adjust the manner in which the manufacturing step is performed.
摘要:
A method for making a turbine airfoil includes: (a) providing a mold having: (i) a core; (ii) an outer shell surrounding the core such that the core and the outer shell cooperatively define a cavity in the shape of an airfoil having at least one outer wall; and (iii) a core support extending from the core to the outer shell through a portion of the cavity that defines the at least one sidewall; (b) introducing molten metal alloy into the cavity and surrounding the core support; (c) solidifying the alloy to form an airfoil casting having at least one outer wall which has at least one core support opening passing therethrough; (d) removing the mold so as to expose the airfoil; and (e) sealing the at least one core support opening in the airfoil with a metal alloy metallurgically bonded to the at least one outer wall.
摘要:
A method for laser shock peening an article, such as a gas turbine engine airfoil, with varying thickness by varying a surface fluence of a laser beam over a laser shock peening surface as a function of the thickness beneath a laser shock peened spot formed by the beam on the surface. The fluence may be equal to the thickness multiplied by a volumetric fluence factor, the volumetric fluence factor being held constant over the laser shock peening surface. The volumetric fluence factor may be in a range of about 1200 J/cm3 to 1800 J/cm3 and more particularly about 1500 J/cm3. The method may include varying energy in the laser beam using a computer program controlling firing of the laser beam. A device such as an optical attenuator external to a laser performing firing may be used to vary the energy.
摘要翻译:一种通过在激光冲击硬化表面上改变激光束的表面能量密度来改变厚度变化的诸如燃气涡轮发动机翼型的物品的激光冲击冲击的方法,其作为由激光冲击硬化点形成的激光脉冲硬化点下方的厚度的函数 光束在表面。 流量可以等于厚度乘以体积注量因子,体积注量因子在激光冲击喷丸表面上保持不变。 体积注量系数可以在约1200J / cm 3至1800J / cm 3之间的范围内,更特别地约为1500J / cm 3, SUP>。 该方法可以包括使用控制激光束激发的计算机程序在激光束中改变能量。 可以使用诸如在执行烧制的激光器外部的光衰减器的装置来改变能量。
摘要:
A method for laser shock peening an article including laser shock peening a first area with at least one high fluence laser beam and laser shock peening a border area between the first area and a non-laser shock peened area of the article with at least one first low fluence laser beam. The border area may be laser shock peened with a second low fluence laser beam or more low fluence laser beams wherein the second low fluence laser beam and others have a lower fluence than the first low fluence laser beam. The border area may be laser shock peened with progressively lower fluence laser beams starting with the one first fluence laser beam wherein the progressively lower fluence laser beams are in order of greatest fluence to least fluence in a direction outwardly from the first area through the border area to the non-laser shock peened area.
摘要:
A method for laser shock peening an article by simultaneously firing low energy first and second laser beams to form pairs of longitudinally spaced apart first and second laser shock peened spots that are on opposite sides of the article, simultaneously laser shock peened, and transversely offset from each other. Each of the low energy first and second laser beams having a level of energy of between 1-10 joules.