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公开(公告)号：US5747769A
公开(公告)日：1998-05-05
申请号：US555653
申请日：1995-11-13
CPC分类号： B23K26/384 , B23K26/362 , B23K26/364 , B23K26/389
摘要： A method for forming a slot in a metal component having first and second opposite surfaces utilizes a first laser beam having a pulse rate and power to vaporize the metal. The laser beam is traversed across the first surface at a feed rate so that each beam pulse vaporizes the component metal at a spot. The laser beam pulse rate and feed rate are effective so that successive spots do not substantially overlap each other. The laser beam is traversed in repeated steps in a series of passes so that the spots collectively form a continuous slot to a depth below the first surface. In a subsequent step, a second laser beam is positioned in the slot to drill a hole through a base of the slot, with the second laser beam being repositioned to drill a plurality of the through holes spaced apart from each other along the length of the slot.
摘要翻译： 在具有第一和第二相对表面的金属部件中形成槽的方法利用具有脉冲率和功率的第一激光束来蒸发金属。 激光束以进给速率穿过第一表面，使得每个光束脉冲在一点上汽化组分金属。 激光束脉冲速率和进给速率是有效的，使得连续的点基本上彼此不重叠。 激光束在一系列通过中以重复的步骤穿过，使得斑点在第一表面下方一起形成连续的槽。 在随后的步骤中，第二激光束定位在槽中，以穿过槽的底部钻一个孔，其中第二激光束被重新定位以钻出多个彼此间隔开的通孔， 槽
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公开(公告)号：US5012087A
公开(公告)日：1991-04-30
申请号：US337788
申请日：1989-04-13
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。
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公开(公告)号：US6159619A
公开(公告)日：2000-12-12
申请号：US371117
申请日：1999-08-10
CPC分类号： C21D10/005 , Y10S148/903 , Y10T428/12458
摘要： The present invention provides a metallic article with at least one laser shock peened surface on at least a portion of the article and a plurality of volumetrically spaced apart laser shock peened protrusions extending into the article from said laser shock peened surface wherein the protrusions have deep compressive residual stresses imparted by laser shock peening (LSP). The invention may be further characterized by spaced apart circular laser beam spots on the surface from which the laser shock peened protrusions extend into the article such that the spots do not overlap. The present invention includes a method of laser shock peening a hard metallic article by firing a laser beam on different points of a laser shock peened surface of at least a portion of the article using a laser beam with sufficient power to vaporize material on the surface around laser beam spots formed by the laser beam at the points on the surface, flowing a curtain of water over the surface upon which the laser beam is firing, and firing the laser beam so as to form a plurality of volumetrically spaced apart laser shock peened protrusions extending into the article from the spots such that the protrusions have deep compressive residual stresses imparted by laser the laser beam. The surface may first be coated with an ablative material which the laser beam vaporizes and the method may be an on the fly method of laser shock peening which further includes continuously moving the article while continuously firing a stationary laser beam which repeatably pulses between relatively constant periods.
摘要翻译： 本发明提供一种在物品的至少一部分上具有至少一个激光冲击硬化表面的金属制品，以及从所述激光冲击硬化表面延伸到制品中的多个体积间隔开的激光冲击喷丸突起，其中突起具有深度压缩 激光冲击喷丸（LSP）施加的残余应力。 本发明的进一步特征还在于表面上的间隔开的圆形激光束斑点，激光冲击喷丸突起从该点突出延伸到制品中，使得斑点不重叠。 本发明包括一种激光冲击硬化金属制品的方法，其通过使用具有足够功率的激光束在表面周围的表面上蒸发材料的激光束，在激光束的至少一部分的激光冲击硬化表面的不同点上点燃激光束 由激光束在表面上的点形成的激光束斑点，使水幕在激光束射出的表面上流动，并且激发激光束，以形成多个体积相距离的激光冲击喷丸突起 从斑点延伸到制品中，使得突起具有由激光束施加的激光束的深的压缩残余应力。 表面可以首先涂覆有激光束蒸发的烧蚀材料，并且该方法可以是激光冲击喷丸的飞行方法，其还包括连续地移动物品，同时连续点火固定的激光束，该固定激光束在相对恒定的周期 。
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4.发明授权
公开(公告)号：US06130400A
公开(公告)日：2000-10-10
申请号：US105686
申请日：1998-06-26
申请人： Todd J. Rockstroh
发明人： Todd J. Rockstroh
CPC分类号： C21D10/005 , B23K26/03 , B23K26/064 , B23K26/0665 , Y10S148/903
摘要： A method for quality assurance of a laser process and, more particularly, a laser shock peening process that uses a ballistic momentum apparatus for maintaining quality control of a laser shock peening process that uses a laser includes a movable target mass having a laser target face and confined to freely move in one direction. An indicating means indicates a maximum distance traversed by the target mass during a recoil from firing of the laser on the target face. An ablative coating is preferably applied on at least a portion of the face and preferably a transparent confinement medium, such as a flow of water, is applied over the ablative coating.
摘要翻译： 更具体地说，一种激光工艺的质量保证方法，更具体地说，一种使用弹道动量装置来维持使用激光的激光冲击硬化处理的质量控制的激光冲击喷丸处理方法包括具有激光目标面和 限制在一个方向自由移动。 指示装置表示在目标表面上激光的点火反冲期间由目标质量块穿过的最大距离。 优选地，在面部的至少一部分上施加烧蚀涂层，并且优选将透明约束介质（例如水流）施加在烧蚀涂层上。
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5.发明授权Holographic interferometry for monitoring and controlling laser shock peening 有权全息干涉测量用于监控和控制激光冲击硬化
公开(公告)号：US6094260A
公开(公告)日：2000-07-25
申请号：US133100
申请日：1998-08-12
CPC分类号： B23K26/032 , B23K26/0069 , G01B9/021 , Y10S148/90 , Y10S148/903
摘要： A method for quality assurance of a laser shock peening process uses interferometry to form a fringe image from first and second interferograms of unstressed and stressed laser shock peened patches respectively of a workpiece. The fringe image may then be compared to a predetermined correlation of fringe images for indicating quality assurance. Stressing the laser shock peened patch may include loading the production and test workpieces during the production of the first and second images by interferometry while the production and test workpieces are fixtured. The loading may be done by heating, twisting, or bending of at least a portion of the production and test workpieces. The comparing of the production images of fringes may include comparing fringe characteristics of the laser shock peened patches on the production workpieces laser against fringe characteristics of the predetermined correlation.
摘要翻译： 用于激光冲击硬化处理的质量保证的方法使用干涉测量从工件的不受应力和应力激光冲击喷丸的第一和第二干涉图形成条纹图像。 然后将条纹图像与用于指示质量保证的条纹图像的预定相关性进行比较。 强调激光冲击硬化贴片可以包括在生产和测试工件时通过干涉测量在制造第一和第二图像期间加载生产和测试工件。 加载可以通过对生产和测试工件的至少一部分进行加热，扭曲或弯曲来完成。 条纹的生产图像的比较可以包括比较生产工件激光器上的激光冲击喷丸的条纹特性与预定相关性的条纹特性。
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公开(公告)号：US5278860A
公开(公告)日：1994-01-11
申请号：US952087
申请日：1992-09-28
CPC分类号： H01S3/025 , H01S3/0407 , H01S3/042 , H01S3/0606 , H01S3/093
摘要： This invention relates to face-pumped slab lasers of the type that have laser head assemblies constructed of individual components, which are rigidly attached together, in order to form an integral structure. Such structures of this type, generally, allow a face-pumped slab laser component to be assembled and disassembled easily and quickly.
摘要翻译： 本发明涉及具有刚性地连接在一起的各个部件构成的激光头组件的类型的面部泵浦平板激光器，以便形成一体的结构。 这种类型的这种结构通常允许面部泵送的平板激光器部件容易且快速地组装和拆卸。
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7.发明授权Laser apparatus including crystal protection circuitry and method of operation thereof 失效激光设备包括晶体保护电路及其操作方法
公开(公告)号：US5177756A
公开(公告)日：1993-01-05
申请号：US733521
申请日：1991-07-22
IPC分类号： H01S3/131
CPC分类号： H01S3/1312
摘要： A laser apparatus is disclosed which is capable of protecting the laser slab or rod crystal within the laser from damage due to overheating when the laser malfunctions in a manner such that laser output ceases while optical pumping of the laser crystal continues. The laser apparatus includes a laser crystal situated within a laser cavity. The apparatus also includes an excitation lamp for pumping the crystal to generate a laser beam to project along a desired main path. A first sensor senses the cessation of the projection of the laser beam along the desired main path and a second sensor senses the continuing excitation of the excitation lamp. The apparatus further includes a extinguishing circuit for extinguishing the excitation lamp a predetermined amount of time after the cessation of the laser beam such that damage to the laser apparatus due to overheating is avoided.
摘要翻译： 公开了一种激光装置，其能够保护激光器内的激光板或棒状晶体免于由于过热而造成的损坏，因为当激光晶体的光泵浦持续时激光输出停止，激光器的功能失效。 激光装置包括位于激光腔内的激光晶体。 该装置还包括用于泵送晶体以产生沿所需主路径突出的激光束的激发灯。 第一传感器感测激光束沿所需主路径的投射的停止，第二传感器感测激发灯的持续激发。 该装置还包括一个熄灭电路，用于在激光束停止之后将激励灯熄灭预定量的时间，从而避免了由于过热而对激光装置造成的损坏。
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公开(公告)号：US5113582A
公开(公告)日：1992-05-19
申请号：US614367
申请日：1990-11-13
CPC分类号： F01D5/288 , B23K26/40 , B23P6/002 , F01D5/286 , B23K2203/16 , B23K2203/50 , B23K2203/52 , B23P2700/06 , Y10T29/49318 , Y10T29/4932 , Y10T29/49336
摘要： A method for making a gas turbine engine component includes the steps of: providing an unfinished gas turbine engine component; directing a laser beam on a selected surface portion of the engine component to prepare the selected surface portion before at least one of a subsequent coating and bonding step; and depositing at least one layer of an abradable material, a subassembly of the component or a thermal barrier coating on the selected surface portion.
摘要翻译： 一种制造燃气涡轮发动机部件的方法包括以下步骤：提供未完成的燃气涡轮发动机部件; 将激光束引导到发动机部件的选定表面部分上，以在随后的涂覆和粘合步骤中的至少一个之前制备所选择的表面部分; 以及在所选择的表面部分上沉积至少一层耐磨材料，组件的子组件或热障涂层。
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公开(公告)号：US6005219A
公开(公告)日：1999-12-21
申请号：US993197
申请日：1997-12-18
CPC分类号： F01D5/286 , C21D10/005 , Y02T50/671 , Y02T50/673
摘要： A method of laser shock peening a hard metallic article by firing a laser beam on different points of a laser shock peened surface of at least a portion of the article using a laser beam with sufficient power to vaporize material on the surface around laser beam spots formed by the laser beam at the points on the surface, flowing a curtain of water over the surface upon which the laser beam is firing, and firing the laser beam so as to form a plurality of volumetrically spaced apart laser shock peened protrusions extending into the article from the spots such that the protrusions have deep compressive residual stresses imparted by laser the laser beam. The surface may first be coated with an ablative material which the laser beam vaporizes and the method may be an on the fly method of laser shock peening which further includes continuously moving the article while continuously firing a stationary laser beam which repeatably pulses between relatively constant periods.
摘要翻译： 一种激光冲击硬化金属制品的方法，其通过使用具有足够功率的激光束在形成的激光束点周围的表面上的材料上激发激光束在至少一部分制品的激光冲击硬化表面的不同点上发射激光束 通过激光束在表面上的点处，将水幕流过激光束在其上的表面上，并且激发激光束，以形成延伸到制品中的多个体积上相距离的激光冲击喷丸突起 从这些点使得突起具有由激光激光束施加的深的压缩残余应力。 表面可以首先涂覆有激光束蒸发的烧蚀材料，并且该方法可以是激光冲击喷丸的飞行方法，其还包括连续地移动物品，同时连续点火固定的激光束，该固定激光束在相对恒定的周期 。
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公开(公告)号：US5609779A
公开(公告)日：1997-03-11
申请号：US648472
申请日：1996-05-15
申请人： John M. Crow , James G. Kelley , Todd J. Rockstroh
发明人： John M. Crow , James G. Kelley , Todd J. Rockstroh
CPC分类号： B23K26/0622 , B23K26/384 , B23K26/389 , B23K2201/001
摘要： A method for forming an aperture in a component wall made of metal, the aperture having a diffuser which opens up and outward from a bottom of the diffuser to a first surface of the wall, the method includes the following steps: A) laser machining the wall with a laser which produces a laser beam having a pulse rate and power sufficient to vaporize the metal; B) firing and traversing the laser beam, preferably at an acute angle, across the surface to a predetermined first edge of the diffuser in a single pass starting at a centerline of the diffuser; and C) traversing the laser beam at an increasing rate of speed during the pass so that each beam pulse vaporizes the metal at a laser spot such that successive laser spots substantially overlap each other in decreasing amounts and the pulses nibble out the metal to form a continuous trench below the surface.
摘要翻译： 一种用于在由金属制成的部件壁中形成孔的方法，所述孔具有从扩散器的底部向外开放到壁的第一表面的扩散器，该方法包括以下步骤：A）激光加工 具有产生具有足以使金属蒸发的脉率和功率的激光束的激光器; B）从扩散器的中心线开始并穿过激光束，优选以锐角穿过该表面到达扩散器的预定第一边缘; 并且C）在通过期间以增加的速度穿过激光束，使得每个光束脉冲在激光点处使金属蒸发，使得连续的激光点基本上以减少的量彼此重叠，并且脉冲将金属啃掉以形成 表面连续沟槽。
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