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1. 发明授权

US06570126B2 Simultaneous offset dual sided laser shock peening using low energy laser beams 失效
公开(公告)号：US06570126B2
公开(公告)日：2003-05-27
申请号：US09945191
申请日：2001-08-31
申请人： Ui Won Suh , Seetharamaiah Mannava , Todd Jay Rockstroh
发明人： Ui Won Suh , Seetharamaiah Mannava , Todd Jay Rockstroh
IPC分类号： B23K2600
CPC分类号： C21D10/005 , F01D5/286
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.

2. 发明授权

US06341936B1 FOD inspection of laser shock peened gas turbine engine airfoils 失效
标题翻译：激光冲击喷丸机燃气涡轮发动机翼型FOD检测
公开(公告)号：US06341936B1
公开(公告)日：2002-01-29
申请号：US09556713
申请日：2000-04-21
申请人： William D. Cowie , Seetharamaiah Mannava , Jeffrey H. Nussbaum
发明人： William D. Cowie , Seetharamaiah Mannava , Jeffrey H. Nussbaum
IPC分类号： F01D514
CPC分类号： F01D21/14 , B23K26/356 , B23K2101/001 , B23P6/002 , C21D10/005 , F01D5/005 , F01D5/14 , F01D21/003 , F05D2260/80 , Y10T29/49318 , Y10T29/49336
摘要： The present invention is a method for operating a gas turbine engine airfoil having leading and trailing edges subject to FOD (foreign object damage) damage. The method includes inspecting the airfoil along at least a first one of the edges having at least a first laser shock peened patch along the first one of the edges, ascertaining FOD lengths of foreign object damage (FOD) extending from the first one of the edges into the airfoil within the patch, and allowing the airfoil to remain in service without repair if the FOD lengths are up to a maximum length of about one-half of a width of the laser shock peened patch, as measured from the edge.
摘要翻译：本发明是用于操作具有受FOD（异物损坏）损坏的前缘和后缘的燃气涡轮发动机翼型的方法。该方法包括沿至少第一边缘检查翼型件，其中至少第一边缘具有沿着第一边缘的至少第一激光冲击喷丸块，确定从第一边缘延伸的异物损坏（FOD）的FOD长度如果从边缘测量的FOD长度达到激光冲击喷丸补片的宽度的大约二分之一的最大长度，则允许翼型件保持在维修中。

3. 发明授权

US5584586A Laser shock peened bearings 失效
标题翻译：激光冲击喷丸轴承
公开(公告)号：US5584586A
公开(公告)日：1996-12-17
申请号：US610298
申请日：1996-03-04
申请人： Dominick A. Casarcia , William D. Cowie , Seetharamaiah Mannava
发明人： Dominick A. Casarcia , William D. Cowie , Seetharamaiah Mannava
IPC分类号： C21D10/00 , F16C33/30 , F16C33/62 , F16C33/64
CPC分类号： C21D10/005 , F16C33/30 , F16C33/62 , F16C33/64 , F16C2360/23
摘要： A bearing element having a metallic body with a bearing contact curved surface portion, at least one laser shock peened surface encompassing at least a portion of the contact surface portion, and a region having deep compressive residual stresses imparted by laser shock peening (LSP) extending into the body from the laser shock peened surface. The present invention may be used for rolling elements such as ball bearing elements or elongated roller elements and for static elements such as races which may be singular or split and may have circumferentially spaced oil feed passages radially disposed therethrough.
摘要翻译：一种具有金属体的轴承元件，具有轴承接触弯曲表面部分，至少一个包围接触表面部分的至少一部分的激光冲击硬化表面以及具有由激光冲击喷丸（LSP）延伸的深度压缩残余应力的区域从激光冲击硬化表面进入身体。本发明可以用于诸如滚珠轴承元件或细长滚子元件之类的滚动元件，并且可用于诸如可以是单独的或分开的的种类的静态元件，并且可以具有径向设置在其中的周向隔开的供油通道。

4. 发明授权

US5012087A Fiber optic safety system 失效
标题翻译：光纤安全系统
公开(公告)号：US5012087A
公开(公告)日：1991-04-30
申请号：US337788
申请日：1989-04-13
申请人： Todd J. Rockstroh , SeethaRamaiah Mannava
发明人： Todd J. Rockstroh , SeethaRamaiah Mannava
IPC分类号： G08C25/00 , B23K26/08 , B23K26/42 , G01M11/00 , H01S3/00
CPC分类号： G01M11/33 , B23K26/702
摘要： A system for detecting energy leakage from an optical fiber transmitting high power laser beams. A second optical fiber is placed together with the laser power transmitting fiber into a jacketing tube or conduit. The second fiber is connected at one end to a light source and at the other end to a photosensitive diode. Leakage of laser energy from the power transmitting fiber will cause a failure of the second optical fiber, reducing or terminating the transmission of light to the photosensitive diode. Energy leakage from the laser power transmitting fiber can therefore be detected by monitoring the output of the photosensitive diode.
摘要翻译：一种用于检测来自传输大功率激光束的光纤的能量泄漏的系统。将第二光纤与激光发射光纤一起放置在护套管或管道中。第二光纤在一端连接到光源，另一端连接到光敏二极管。来自功率传输光纤的激光能量的泄漏将导致第二光纤的故障，减少或终止光到光敏二极管的传输。因此，可以通过监视感光二极管的输出来检测来自激光功率传输光纤的能量泄漏。

5. 发明授权

US06183882B2 In plane deflection coupon for monitoring and controlling of laser shock peening 失效
标题翻译：用于监测和控制激光冲击喷丸的平面偏转试样
公开(公告)号：US06183882B2
公开(公告)日：2001-02-06
申请号：US09106320
申请日：1998-06-29
申请人： Seetharamaiah Mannava , William D. Cowie , P. Kennard Wright, III , Robert D. McClain
发明人： Seetharamaiah Mannava , William D. Cowie , P. Kennard Wright, III , Robert D. McClain
IPC分类号： B23K2600
CPC分类号： C21D10/005 , Y10S148/903 , Y10T428/12486
摘要： A test coupon is formed from a metallic strip having opposite first and second sides that generally define a plane of the strip and the strip includes a laser shock peened patch of the strip that has first and second laser shock peened surfaces on the first and second sides, respectively, first and second laser shocked regions having deep compressive residual stresses imparted by the laser shock peening extending into the strip from the first and second laser shock peened surfaces, respectively, and a deflection of a portion of the strip from a position of the portion before the laser shock peening. The deflection is formed by the laser shock peening such that at least a part and preferably substantially all of the deflection lies in the plane and the test coupon preferably includes an indicating means to indicate the deflection.
摘要翻译：测试试样由具有相反的第一和第二侧的金属带形成，其通常限定条带的平面，并且条带包括条带的激光冲击喷丸贴片，其在第一和第二侧上具有第一和第二激光冲击喷丸表面分别具有由激光冲击喷丸赋予的深压缩残余应力的第一激光冲击区域和第二激光冲击区域分别从第一和第二激光冲击喷丸表面延伸到条带中，并且一部分条带从激光冲击硬化之前的部分。通过激光冲击喷丸形成偏转，使得至少一部分，优选基本上全部的偏转位于平面中，并且测试试样优选地包括指示装置以指示偏转。

6. 发明授权

US5951790A Method of monitoring and controlling laser shock peening using an in plane deflection test coupon 失效
标题翻译：使用平面偏转测试试样监测和控制激光冲击喷丸的方法
公开(公告)号：US5951790A
公开(公告)日：1999-09-14
申请号：US107196
申请日：1998-06-26
申请人： Seetharamaiah Mannava , William D. Cowie , P. Kennard Wright, III , Robert D. McClain
发明人： Seetharamaiah Mannava , William D. Cowie , P. Kennard Wright, III , Robert D. McClain
IPC分类号： C21D10/00 , C21D1/54
CPC分类号： C21D10/005 , Y10S148/90 , Y10S148/903
摘要： A method for quality assurance of a laser process and more particularly a laser shock peening process that uses a test coupon having a deflection formed by a laser firing. The test coupon is from a metallic strip having opposite first and second sides that generally define a plane of the strip and the strip includes a laser shock peened patch of the strip that has first and second laser shock peened surfaces on the first and second sides, respectively, first and second laser shocked regions having deep compressive residual stresses imparted by the laser shock peening extending into the strip from the first and second laser shock peened surfaces, respectively, and a deflection of a portion of the strip from a position of the portion before the laser shock peening. The deflection is formed by the laser shock peening such that at least a part and preferably substantially all of the deflection lies in the plane of the strip and the test coupon preferably includes an indicating means to indicate the deflection. The quality assurance process of the present invention may further include correlating high cycle fatigue to the deflection.
摘要翻译：一种用于激光工艺的质量保证的方法，更具体地说是使用具有通过激光烧制形成的偏转的试样的激光冲击硬化工艺。试样来自具有相反的第一和第二侧的金属条，其通常限定条带的平面，并且条带包括条的激光冲击喷丸补片，其在第一和第二侧上具有第一和第二激光冲击硬化表面，分别具有由激光冲击喷丸赋予的深压缩残余应力的第一和第二激光冲击区域分别从第一和第二激光冲击喷丸表面延伸到条带中，并且一部分条带从该部分的位置偏转之前激光冲击硬化。通过激光冲击喷丸形成偏转，使得至少一部分并且优选地基本上全部的偏转位于条的平面中，并且试样优选地包括指示装置以指示偏转。本发明的质量保证过程还可以包括将高循环疲劳与偏转相关联。

7. 发明授权

US5759640A Method for forming a thermal barrier coating system having enhanced spallation resistance 失效
标题翻译：形成具有增强的耐剥落性的热障涂层体系的方法
公开(公告)号：US5759640A
公开(公告)日：1998-06-02
申请号：US777181
申请日：1996-12-27
申请人： Seetharamaiah Mannava , Antonio F. Maricocchi , Andi K. Bartz
发明人： Seetharamaiah Mannava , Antonio F. Maricocchi , Andi K. Bartz
IPC分类号： C23C4/02 , B05D3/00
CPC分类号： C23C4/02
摘要： A method of forming a thermal barrier coating on an article designed for use in a hostile thermal environment, such as turbine, combustor and augmentor components of a gas turbine engine. The method is particularly directed to increasing spallation resistance of thermal barrier coatings composed of an aluminum-containing bond coat formed on the surface of an article, and an insulating ceramic layer overlaying the bond coat. Processing steps include forming the bond coat on the surface of the article, and then treating the surface of the bond coat with laser energy so as to form a diffusion barrier layer of alumina. Thereafter, a ceramic material is deposited on the surface of the diffusion barrier layer so as to form the insulating ceramic layer. A preferred technique for the treating step is to scan the surface of the bond coat with an ultraviolet laser beam characterized by an appropriate beam geometry and fluence to yield the desired diffusion barrier layer.
摘要翻译：在设计用于恶劣热环境（例如燃气涡轮发动机的涡轮机，燃烧器和增压器部件）中的物品上形成热障涂层的方法。该方法特别涉及增加由形成在制品表面上的含铝粘合剂涂层和覆盖粘合涂层的绝缘陶瓷层构成的隔热涂层的抗剥落性。加工步骤包括在制品的表面上形成粘合涂层，然后用激光能量处理粘合涂层的表面，以形成氧化铝的扩散阻挡层。此后，在扩散阻挡层的表面上淀积陶瓷材料，形成绝缘陶瓷层。用于处理步骤的优选技术是用特征在于适当的光束几何形状和能量密度的紫外激光束扫描粘合涂层的表面以产生所需的扩散阻挡层。

8. 发明授权

US5674328A Dry tape covered laser shock peening 失效
标题翻译：干磁带覆盖激光冲击硬化
公开(公告)号：US5674328A
公开(公告)日：1997-10-07
申请号：US638622
申请日：1996-04-26
申请人： Seetharamaiah Mannava , Robert L. Yeaton , Albert E. McDaniel
发明人： Seetharamaiah Mannava , Robert L. Yeaton , Albert E. McDaniel
IPC分类号： B23K26/00 , C21D7/06 , C21D10/00 , C22F3/00 , C23C26/00 , C21D1/09
CPC分类号： C21D10/005 , C21D7/06 , Y10S148/903
摘要： A method of laser shock peening a metallic part by firing a laser on a laser shock peening surface of the part which has been adhesively covered by tape having an ablative medium, preferably, a self adhering tape with an adhesive layer on one side of an ablative layer and a confinement medium without flowing a confinement curtain of fluid over the surface upon which the laser beam is firing. Continuous movement is provided between the part and the laser beam while continuously firing the laser beam, which repeatably pulses between relatively constant periods, on a laser shock peening surface of the part. Using a laser beam with sufficient power to vaporize the ablative medium so that the pulses form laser beam spots on the surface and a region having deep compressive residual stresses imparted by the laser shock peening process extending into the part from the surface. The confinement medium may be supplied by a single layer of tape having a clear layer over the ablative layer or a thicker lap or thickness of laps of a tape with just an ablative layer wherein the extra thickness provides the confinement medium.
摘要翻译：一种激光冲击硬化金属部件的方法，其通过在已经被具有烧蚀介质的带粘合地覆盖的部分的激光冲击硬化表面上激发激光，优选地，具有在烧蚀的一侧上的粘合剂层的自粘带层和限制介质，而不会在激光束射出的表面上流动流体的限制帘。在部件和激光束之间提供连续运动，同时在激光冲击硬化表面上连续点火激光束，该激光束在相对恒定的周期之间重复地脉冲。使用具有足够功率的激光束来蒸发烧蚀介质，使得脉冲在表面上形成激光束斑点，并且具有由激光冲击喷丸处理赋予的具有深度压缩残余应力的区域从表面延伸到部件中。约束介质可以由具有清除层的单层带提供，或者较薄的搭接层或厚度的条带，仅具有消融层，其中额外的厚度提供限制介质。

9. 发明授权

US5584662A Laser shock peening for gas turbine engine vane repair 失效
标题翻译：用于燃气轮机发动机叶片修复的激光冲击喷丸
公开(公告)号：US5584662A
公开(公告)日：1996-12-17
申请号：US399321
申请日：1995-03-06
申请人： Seetharamaiah Mannava , Stephen J. Ferrigno
发明人： Seetharamaiah Mannava , Stephen J. Ferrigno
IPC分类号： B23P6/00 , C21D7/06 , C21D10/00 , F01D5/00 , F01D5/14 , F01D9/02
CPC分类号： B23P6/007 , C21D10/005 , F01D5/005 , C21D10/00 , C21D7/06 , Y10S148/903 , Y10T29/49318 , Y10T29/49336
摘要： A wide gap braze repair, particularly for a gas turbine engine vane or a component in the hot section of the engine. The repair is characterized by a braze filled void in a damaged area of the component, a laser shock peened surface over the repaired area of the braze filled void, and a region of deep compressive residual stresses imparted by laser shock peening (LSP) extending from the laser shock peened surface into the repair.
摘要翻译：特别是用于燃气涡轮发动机叶片或发动机热段中的部件的宽间隙钎焊修复。该修复的特征在于部件的损坏区域中的钎焊填充空隙，在钎焊填充空隙的修复区域上的激光冲击硬化表面以及由激光冲击喷丸（LSP）延伸的深度压缩残余应力的区域激光冲击喷丸表面进行修补。

10. 发明授权

US06559415B1 Single sided laser shock peening 失效
标题翻译：单面激光冲击硬化
公开(公告)号：US06559415B1
公开(公告)日：2003-05-06
申请号：US10195095
申请日：2002-07-12
申请人： SeethaRamaiah Mannava , Philemon Kennard Wright, III , Farzin Homayoun Azad , Mark Lloyd Miller
发明人： SeethaRamaiah Mannava , Philemon Kennard Wright, III , Farzin Homayoun Azad , Mark Lloyd Miller
IPC分类号： B23K2600
CPC分类号： F01D5/286 , C21D10/005
摘要： A method for single sided laser shock peening an article includes laser shock peening a laser shock peening surface on a first side of the article while maintaining an opposite second surface on a back side of the article in acoustic communication with a shock attenuating material. The second surface is opposite the laser shock peening surface. The shock attenuating material is a material that does not allow tensile waves to be reflected back off the back side through the article. The shock attenuating material may be a liquid metal and the article made from a titanium alloy. One such article is a gas turbine engine airfoil of an integrally bladed disk and the surfaces may be on an edge of the airfoil. The shock attenuating material may be one that dissipates compressive waves or reflects back compressive shock waves caused by the laser shock peening.
摘要翻译：用于单面激光冲击硬化物品的方法包括在制品的第一侧上激光冲击硬化激光冲击硬化表面，同时保持与冲击衰减材料声学连通的制品背面上的相对的第二表面。第二个表面与激光冲击喷丸表面相对。冲击衰减材料是不允许拉伸波从背面反射穿过物品的材料。冲击衰减材料可以是液态金属，并且由钛合金制成的制品。一个这样的物品是整体叶片盘的燃气涡轮发动机翼型，并且表面可以在翼型的边缘上。冲击衰减材料可以是消除压缩波或反射由激光冲击喷丸引起的压缩冲击波的材料。

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