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公开(公告)号：US06832943B2
公开(公告)日：2004-12-21
申请号：US10065744
申请日：2002-11-14
申请人： Farzin Homayoun Azad
发明人： Farzin Homayoun Azad
IPC分类号： H01J900
CPC分类号： H01J61/045 , H01J9/323
摘要： The invention provides a method for sealing arc tubes while preventing cracking of the tube. The method comprises sealing a pair of electrodes on the arc tube in a furnace. A heat shield structure is used to reduce the thermal gradient generated by the sealing process. The heat shield comprises alternating layers of thermally conducting materials and thermally non-conducting materials.
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公开(公告)号：US6002706A
公开(公告)日：1999-12-14
申请号：US1231
申请日：1997-12-30
CPC分类号： G01J11/00 , B23K26/702
摘要： A method of controlling the size of a laser beam comprises the steps of generating the laser beam with a laser, focusing the laser beam, directing the laser beam to a target, directing a portion of the laser beam to an optical detector which generates a signal representative of a fluence distribution of the laser beam, and adjusting a focal point of the laser beam based on the measured fluence distribution to control the size of the laser beam on the target. The method can be carried out with an apparatus which comprises a beam splitter which divides the laser beam into a first portion and a second portion, a lens which focuses the first portion of the laser beam for incidence on a target, a detector which receives the second portion of the laser beam and which generates a signal representative of a spatial energy distribution of the laser beam, a digitizer which digitizes the signal from the detector, a data analyzer which receives the digitized signal from the digitizer and which calculates a fluence distribution of the laser beam, and a lens controller for adjusting a position of the lens with respect to the target based on the fluence distribution.
摘要翻译： 控制激光束尺寸的方法包括以下步骤：用激光产生激光束，聚焦激光束，将激光束引导到目标，将激光束的一部分引导到产生信号的光学检测器 代表激光束的注量分布，以及基于所测量的通量分布来调整激光束的焦点，以控制激光束在靶上的尺寸。 该方法可以用包括将激光束分成第一部分和第二部分的分束器的装置进行，将聚焦激光束的第一部分以将其入射到目标上的透镜，接收 激光束的第二部分，并且其产生表示激光束的空间能量分布的信号，数字化仪，其将来自检测器的信号数字化;数据分析器，其从数字化仪接收数字化信号，并且计算数字化分布 激光束和用于基于注量分布来调整透镜相对于目标的位置的透镜控制器。
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公开(公告)号：US5698273A
公开(公告)日：1997-12-16
申请号：US562484
申请日：1995-11-24
CPC分类号： C23C14/30
摘要： A method is disclosed for operating an electron beam physical vapor deposition apparatus including a vacuum chamber containing an ingot disposed in a crucible, a workpiece disposed above the ingot, and an electron gun for emitting an electron beam to melt and vaporize the ingot to disperse vapors for deposition coating of the workpiece. The method includes directing a primary electron beam with a primary beam focus in a primary scanning pattern across a top surface of the ingot to melt and vaporize the ingot and develop an ingot melt pool floating atop an underlying ingot substrate. A secondary electron beam is superimposed across the ingot top surface in conjunction with the primary electron beam. The secondary electron beam has a secondary beam focus in a secondary scanning pattern to locally and transiently increase vaporization rate of the melt pool.
摘要翻译： 公开了一种用于操作电子束物理气相沉积设备的方法，该电子束物理气相沉积设备包括含有设置在坩埚中的铸锭的真空室，设置在铸块上方的工件，以及用于发射电子束以熔化和蒸发铸锭以分散蒸气的电子枪 用于工件的沉积涂层。 该方法包括将一次电子束以一次扫描图案的方式引导穿过该锭的顶表面，以熔化和蒸发锭，并且开发漂浮在下面的锭基底顶上的晶锭熔池。 二次电子束与一次电子束一起叠加在晶锭顶表面上。 二次电子束具有二次扫描图案中的二次束聚焦以局部地并且瞬时提高熔池的蒸发速率。
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公开(公告)号：US07906746B2
公开(公告)日：2011-03-15
申请号：US11164650
申请日：2005-11-30
CPC分类号： C21D10/005 , F01D5/286 , G01N29/12 , G01N2291/0234 , Y02T50/671
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.
摘要翻译： 用于监测激光冲击锤击过程的系统和方法包括连接到控制器的传感器。 控制器包括输入和处理器。 输入端连接到传感器，以接收指示工件处的激光冲击事件的信号。 处理器连接到输入端并被配置为确定与从工件到传感器的激光冲击事件相关联的剩余能量的飞行时间，并且从剩余能量的飞行时间确定喷丸质量。
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公开(公告)号：US06677037B1
公开(公告)日：2004-01-13
申请号：US09660967
申请日：2000-09-13
申请人： Mark Lloyd Miller , Farzin Homayoun Azad , Seetha Ramaiah Mannava , Philemon Kennard Wright, III
发明人： Mark Lloyd Miller , Farzin Homayoun Azad , Seetha Ramaiah Mannava , Philemon Kennard Wright, III
IPC分类号： C21D109
CPC分类号： C21D10/005 , Y10S148/902 , Y10T428/2809 , Y10T428/2857 , Y10T428/31692 , Y10T428/31909
摘要： An ablative tape is applied onto a substrate surface. The ablative tape comprises an ablative medium comprising a polymer and dispersed metallic component. The tape is then irradiated to ablate the ablative medium. An article comprises a substrate and the ablative tape applied to the substrate.
摘要翻译： 将烧烤带施加到基底表面上。 烧烤带包括包含聚合物和分散的金属组分的烧蚀介质。 然后照射胶带以烧蚀烧蚀介质。 一种制品包括基材和施加到基材上的烧烤带。
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公开(公告)号：US5730811A
公开(公告)日：1998-03-24
申请号：US576822
申请日：1995-12-21
CPC分类号： H01S3/1075 , B23K26/0622 , C21D10/005 , C21D7/06 , H01S3/1103 , H01S3/1127 , H01S3/115 , H01S3/2308 , Y10S148/903
摘要： A laser shock peening apparatus includes a cavity dumping laser oscillator including in optical serial alignment a first mirror, a Pockels cell, a polarizer, a laser rod, and a second mirror defining a cavity having an optical length between the mirrors. The laser rod is optically pumped to generate a laser beam in the cavity, and the Pockels cell has selective wave retardation to allow the beam to oscillate between the mirrors and increase energy therein, followed in turn by dumping the beam into a laser amplifier. The laser amplifier directs the amplified pulse at a target for laser shock peening thereof. The cavity length is selected to develop a substantially square-wave laser pulse for temporally shaping the resulting pressure pulse at the target.
摘要翻译： 激光冲击硬化装置包括：腔体倾倒激光振荡器，其包括光学串行对准，第一反射镜，普克尔斯单元，偏振器，激光棒和限定在反射镜之间具有光学长度的空腔的第二反射镜。 激光棒被光学泵浦以在空腔中产生激光束，并且Pockels单元具有选择性波延迟，以允许光束在反射镜之间振荡并且增加其中的能量，然后将光束倾倒到激光放大器中。 激光放大器将放大的脉冲引导到目标处进行激光冲击喷丸处理。 选择腔长度以形成基本方波激光脉冲，用于在目标处暂时成形所得到的压力脉冲。
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公开(公告)号：US5726919A
公开(公告)日：1998-03-10
申请号：US565540
申请日：1995-11-30
IPC分类号： C23C14/30 , C23C14/54 , H01J37/21 , H01J37/304 , H01J37/305 , C23C14/00 , G21K1/08 , H01J43/14
CPC分类号： C23C14/543 , C23C14/30 , H01J37/21 , H01J37/304 , H01J37/3053
摘要： A method and apparatus are provided for measuring effective focus of an electron beam directed at a target. The electron beam imparts heat flux into the target to effect a target surface temperature profile thereon. A mathematical process model is used to predict an initial iteration of the temperature profile based on operating beam parameters and based on heat transfer behavioral relationships of the target. The temperature profile is optically measured and then compared with the initial iteration to obtain a residual error therebetween. The predicted temperature profile is iterated by varying the beam focus operating parameter until the residual error is less than a predetermined value for determining the effective beam focus.
摘要翻译： 提供了一种用于测量指向目标的电子束的有效焦点的方法和装置。 电子束将热通量赋予靶，以在其上实现目标表面温度分布。 数学过程模型用于基于操作光束参数并基于目标的热传递行为关系来预测温度分布的初始迭代。 温度曲线被光学测量，然后与初始迭代进行比较，以获得其间的残差。 通过改变光束聚焦操作参数来迭代预测温度曲线，直到残余误差小于用于确定有效束聚焦的预定值。
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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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公开(公告)号：US06299681B1
公开(公告)日：2001-10-09
申请号：US09200562
申请日：1998-11-27
IPC分类号： G30B104
摘要： A polycrystalline article is converted to a single crystal in a solid-state process. Heat is applied at a first end of the article to effect a predetermined spatial temperature profile thereat having a maximum temperature approaching a melting temperature thereof. The temperature profile is maintained to initiate conversion at the first end. The heat is moved along the article toward an opposite second end to correspondingly propagate the conversion along the article.
摘要翻译： 多晶制品在固态工艺中转化为单晶。 在制品的第一端处施加热量以实现具有接近其熔化温度的最高温度的预定空间温度分布。 保持温度曲线以在第一端开始转化。 热量沿着制品移动到相对的第二端，以相应地沿着制品传播转化。
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