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公开(公告)号：US07906745B2
公开(公告)日：2011-03-15
申请号：US11009123
申请日：2004-12-10
IPC分类号： B23K26/00
CPC分类号： C21D10/005 , G01N3/20 , G01N3/62 , G01N2203/0248 , G01N2203/0664
摘要： A bend bar is available for use in a quality control test for testing for a consistency of residual stress effects in a particular material using a given a laser peening process. The bar is composed of the particular material to be tested and has a bar length and a bar thickness. The particular material has a characteristic maximum stress penetration depth for compressive residual stresses that can be formed in using the given laser peening process. The bar thickness is chosen so as to be at least twice the characteristic maximum stress penetration depth. The bar has a test surface that extends parallel to the bar length and perpendicular to the bar thickness. After forming a spot pattern on the test surface using the given laser peening process, the deflection generated in the bar due to the compressive residual stresses induced by laser peening can then be measured and used as a quality control measurement.
摘要翻译： 弯曲杆可用于质量控制测试，用于使用给定的激光喷丸处理来测试特定材料中的残余应力效应的一致性。 该棒由待测试的特定材料组成，具有棒长度和棒厚度。 特定材料具有特定的最大应力穿透深度，用于在使用给定的激光喷丸处理过程中形成的压缩残余应力。 选择棒厚度至少是特征最大应力穿透深度的两倍。 棒具有平行于棒长度并垂直于棒厚度的测试表面。 在使用给定的激光喷丸处理方法在测试表面上形成斑点图案之后，可以测量由于激光喷丸处理引起的压缩残余应力而在棒中产生的偏转并用作质量控制测量。
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公开(公告)号：US20110126605A1
公开(公告)日：2011-06-02
申请号：US13023513
申请日：2011-02-08
IPC分类号： C21D7/06
CPC分类号： C21D10/005 , G01N3/20 , G01N3/62 , G01N2203/0248 , G01N2203/0664
摘要： A bend bar is available for use in a quality control test for testing for a consistency of residual stress effects in a particular material using a given a laser peening process. The bar is composed of the particular material to be tested and has a bar length and a bar thickness. The particular material has a characteristic maximum stress penetration depth for compressive residual stresses that can be formed in using the given laser peening process. The bar thickness is chosen so as to be at least twice the characteristic maximum stress penetration depth. The bar has a test surface that extends parallel to the bar length and perpendicular to the bar thickness. After forming a spot pattern on the test surface using the given laser peening process, the deflection generated in the bar due to the compressive residual stresses induced by laser peening can then be measured and used as a quality control measurement.
摘要翻译： 弯曲杆可用于质量控制测试，用于使用给定的激光喷丸处理来测试特定材料中的残余应力效应的一致性。 该棒由待测试的特定材料组成，具有棒长度和棒厚度。 特定材料具有特定的最大应力穿透深度，用于在使用给定的激光喷丸处理过程中形成的压缩残余应力。 选择棒厚度至少是特征最大应力穿透深度的两倍。 棒具有平行于棒长度并垂直于棒厚度的测试表面。 在使用给定的激光喷丸处理方法在测试表面上形成斑点图案之后，可以测量由于激光喷丸处理引起的压缩残余应力而在棒中产生的偏转并用作质量控制测量。
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3.发明授权Laser peening process and apparatus using a liquid erosion-resistant opaque overlay coating 有权激光喷丸处理和使用耐液体侵蚀的不透明覆盖涂层的设备公开(公告)号：US07868268B1
公开(公告)日：2011-01-11
申请号：US11843363
申请日：2007-08-22
IPC分类号： B23K26/00
CPC分类号： B23K26/18 , B23K26/009 , B23K26/356 , C21D10/005
摘要： The invention relates to a method and apparatus for improving properties of a solid material by providing shockwaves there through. Laser shock processing is used to provide the shockwaves. The method includes applying a liquid energy-absorbing overlay, which is resistant to erosion and dissolution by the transparent water overlay and which is resistant to drying to a portion of the surface of the solid material and then applying a transparent overlay to the coated portion of the solid material. A pulse of coherent laser energy is directed to the coated portion of the solid material to create a shockwave. Advantageously, at least a portion of the unspent energy-absorbing overlay can be reused in situ at a further laser treatment location and/or recovered for later use.
摘要翻译： 本发明涉及通过在那里提供冲击波来改善固体材料性能的方法和装置。 激光冲击加工用于提供冲击波。 该方法包括施加液体能量吸收覆盖层，该覆盖层具有抵抗透湿水覆盖层的侵蚀和溶解的作用，并且能够抵抗固体材料表面的一部分的干燥，然后将透明覆盖层施加到 固体材料。 相干激光能量的脉冲被引导到固体材料的涂覆部分以产生冲击波。 有利地，未使用的能量吸收覆盖层的至少一部分可以在另外的激光治疗位置原位再利用和/或回收以供以后使用。
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4.发明授权Method using laser shock processing to provide improved residual stress profile characteristics 有权使用激光冲击加工的方法来提供改进的残余应力分布特征公开(公告)号：US06664506B2
公开(公告)日：2003-12-16
申请号：US10207560
申请日：2002-07-29
IPC分类号： B23K2600
CPC分类号： F01D5/286 , B23K26/0622 , C21D10/005 , F05D2230/41 , Y02T50/672
摘要： Various laser shock processing methods are provided to establish selective compressive residual stress distribution profiles within a workpiece. An asymmetrical stress distribution profile may be formed through the thickness of a thin section of a gas turbine engine airfoil. One method involves simultaneously irradiating a workpiece with a set of laser beams to form a corresponding set of adjacent non-overlapping laser shock peened surfaces, enabling the shockwaves to encounter one another. Additionally, opposite sides of the workpiece may be irradiated at different times to form opposing laser shock peened surfaces, enabling the shockwaves to meet at a location apart from the midplane. Furthermore, opposite sides of the workpiece may be irradiated simultaneously using laser beams having different pulse lengths to form opposing laser shock peened surfaces. Moreover, opposite sides of the workpiece may be irradiated simultaneously to form a set of laterally offset laser shock peened surfaces.
摘要翻译： 提供各种激光冲击加工方法，以在工件内建立选择性压缩残余应力分布曲线。 可以通过燃气涡轮发动机翼型件的薄部分的厚度形成不对称的应力分布轮廓。 一种方法包括同时用一组激光束照射工件以形成相应的一组相邻的非重叠的激光冲击喷丸表面，使得冲击波彼此相遇。 此外，可以在不同时间照射工件的相对侧，以形成相对的激光冲击喷丸表面，使得冲击波能够在远离中平面的位置相遇。 此外，可以使用具有不同脉冲长度的激光束同时照射工件的相对侧，以形成相对的激光冲击喷丸表面。 此外，可以同时照射工件的相对侧，以形成一组横向偏移的激光冲击喷丸表面。
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公开(公告)号：US06483578B1
公开(公告)日：2002-11-19
申请号：US09592534
申请日：2000-06-12
IPC分类号： G01J100
CPC分类号： C21D10/005 , G01J1/4257
摘要： A method and apparatus for measuring the quality of a laser peening process, which includes a test element, a mount for the test element, wherein the test element is mounted at a preselected point in the anticipated path of a laser pulse, the laser pulse irradiates the test element, the deflection of the test element is measured in the direction substantially perpendicular and away from the impacted surface of the test element, and the deflection measurement is compared to a previously generated chart showing the relationship between characteristics of test elements and desired material properties.
摘要翻译： 一种用于测量激光喷丸处理质量的方法和装置，其包括测试元件，用于测试元件的安装座，其中测试元件安装在激光脉冲的预期路径中的预选点处，激光脉冲照射 测试元件，测试元件的偏转在基本垂直和远离测试元件的冲击表面的方向上测量，并且将偏转测量与先前生成的图表进行比较，其中显示了测试元件和所需材料的特性之间的关系 属性。
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6.发明授权Articles having improved residual stress profile characteristics produced by laser shock peening 失效具有由激光冲击硬化产生的具有改善的残余应力分布特征的制品公开(公告)号：US06752593B2
公开(公告)日：2004-06-22
申请号：US10207622
申请日：2002-07-29
IPC分类号： F01D514
CPC分类号： C21D10/005 , C21D2221/00 , F01D5/286 , Y02T50/672
摘要： Articles produced by laser shock processing exhibit various compressive residual stress distribution profiles. A gas turbine engine airfoil includes an asymmetrical stress profile formed through the thickness of its thin section. The articles include plural laser shock peened surfaces and plural regions having deep compressive residual stresses imparted by laser shock peening extending into the article from the laser peened surfaces. One article includes at least one set of simultaneously formed, adjacent non-overlapping laser shock peened surfaces. Another article includes at least one set of opposing laser shock peened surfaces formed at different times at opposite sides of the article. Another article includes at least one set of opposing laser shock peened surfaces formed simultaneously at opposite sides of the article using laser beams having different pulse lengths. Another article includes at least one set of laterally offset laser shock peened surfaces simultaneously formed at opposite sides of the article.
摘要翻译： 通过激光冲击加工制造的制品表现出各种压缩残余应力分布曲线。 燃气涡轮发动机翼型件包括通过其薄部分的厚度形成的不对称应力分布。 这些物品包括多个激光冲击硬化表面和具有从激光喷丸表面延伸到制品中的由激光冲击喷丸赋予的深压缩残余应力的多个区域。 一个物品包括至少一组同时形成的相邻的不重叠的激光冲击喷丸表面。 另一个物品包括在物品的相对侧上的不同时间形成的至少一组相对的激光冲击硬化表面。 另一个物品包括使用具有不同脉冲长度的激光束同时在物品的相对侧形成的至少一组相对的激光冲击硬化表面。 另一个物品包括同时形成在物品的相对两侧的至少一组横向偏移的激光冲击喷丸表面。
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公开(公告)号：US06548782B2
公开(公告)日：2003-04-15
申请号：US09767528
申请日：2001-01-23
IPC分类号： B23K2600
CPC分类号： B23K26/032 , B23K26/009 , B23K26/18 , C21D10/005 , C21D2221/00
摘要： A method of controlling the application of laser peening overlays on the surface of a workpiece to reduce the variability of shock waves generated therein, comprises applying an energy-absorbing overlay to a portion of the surface of a workpiece, measuring the thickness of the energy-absorbing overlay in at least one location on the energy-absorbing overlay, applying a transparent overlay material over the energy-absorbing overlay, measuring the thickness of the transparent overlay in at least one location on the transparent overlay, determining if the measured values for each overlay is within a specified range, and directing a pulse of coherent energy to the workpiece to create a shock wave therein when the measured values are within the specified range.
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8.发明授权Method using laser shock processing to provide improved residual stress profile characteristics 失效使用激光冲击加工的方法来提供改进的残余应力分布特征公开(公告)号：US06875953B2
公开(公告)日：2005-04-05
申请号：US10662802
申请日：2003-09-12
CPC分类号： F01D5/286 , C21D10/005 , F05D2230/41 , Y02T50/672
摘要： Various laser shock processing methods are provided to establish selective compressive residual stress distribution profiles within a workpiece. An asymmetrical stress distribution profile may be formed through the thickness of a thin section of a gas turbine engine airfoil. One method involves simultaneously irradiating a workpiece with a set of laser beams to form a corresponding set of adjacent non-overlapping laser shock peened surfaces, enabling the shockwaves to encounter one another. Additionally, opposite sides of the workpiece may be irradiated at different times to form opposing laser shock peened surfaces, enabling the shockwaves to meet at a location apart from the mid-plane. Furthermore, opposite sides of the workpiece may be irradiated simultaneously using laser beams having different pulse lengths to form opposing laser shock peened surfaces. Moreover, opposite sides of the workpiece may be irradiated simultaneously to form a set of laterally offset laser shock peened surfaces.
摘要翻译： 提供各种激光冲击加工方法，以在工件内建立选择性压缩残余应力分布曲线。 可以通过燃气涡轮发动机翼型件的薄部分的厚度形成不对称的应力分布轮廓。 一种方法包括同时用一组激光束照射工件以形成相应的一组相邻的非重叠的激光冲击喷丸表面，使得冲击波彼此相遇。 此外，可以在不同时间照射工件的相对侧以形成相对的激光冲击喷丸表面，使得冲击波能够在远离中间平面的位置相遇。 此外，可以使用具有不同脉冲长度的激光束同时照射工件的相对侧，以形成相对的激光冲击喷丸表面。 此外，可以同时照射工件的相对侧，以形成一组横向偏移的激光冲击喷丸表面。
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公开(公告)号：US06867390B2
公开(公告)日：2005-03-15
申请号：US10372523
申请日：2003-02-21
CPC分类号： G01N21/95 , B23K26/356 , B64F5/60 , C21D7/02
摘要： The present invention enables the processing head to locate itself precisely on the surface of the structure being processed, and to then reposition itself correctly for the next laser spot. Further, the present invention will complete processing a laser peened area, the area including a multiplicity of spots arranged in a specific pattern, and correctly laser peen each spot in the area under control of a controller including control linkages with the laser.The invention further provides an automated laser peening processing head encompassing spatial position sensing and locating means, as well as programmed spatial positioning, application of overlay materials, verification of proper overlay condition and positioning, and notification of the laser to pulse the surface of the structure.
摘要翻译： 本发明使处理头能够精确地定位在正在处理的结构的表面上，并且随后重新定位它自己正确地为下一个激光点。 此外，本发明将完成处理激光喷丸区域，该区域包括以特定图案布置的多个斑点，以及在包括与激光器的控制连接的控制器的控制下的区域中的每个点的正确激光喷丸。本发明进一步 提供了包括空间位置感测和定位装置的自动化激光喷丸处理头，以及编程的空间定位，覆盖材料的应用，适当的覆盖条件和定位的验证以及激光器通知结构的表面。
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公开(公告)号：US06841755B2
公开(公告)日：2005-01-11
申请号：US10372526
申请日：2003-02-21
CPC分类号： B23K26/032 , B23K26/009 , B23K26/18 , C21D10/005 , C21D2221/00
摘要： A method of controlling the application of laser peening overlays on the surface of a workpiece to reduce the variability of shock waves generated therein, comprises applying an energy-absorbing overlay to a portion of the surface of a workpiece, measuring the thickness of the energy-absorbing overlay in at least one location on the energy-absorbing overlay, applying a transparent overlay material over the energy-absorbing overlay, measuring the thickness of the transparent overlay in at least one location on the transparent overlay, determining if the measured values for each overlay is within a specified range, and directing a pulse of coherent energy to the workpiece to create a shock wave therein when the measured values are within the specified range.
摘要翻译： 控制在工件表面上应用激光喷丸覆盖层以减少其中产生的冲击波的可变性的方法包括将能量吸收层施加到工件表面的一部分上，测量能量 - 在能量吸收覆盖物上的至少一个位置吸收覆盖层，在能量吸收覆盖层上施加透明覆盖材料，在透明覆盖物上的至少一个位置测量透明覆盖物的厚度，确定每个 覆盖层在指定范围内，并且当测量值在指定范围内时，将相干能量的脉冲引导到工件以产生冲击波。
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