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| Number | Title | Issue Date |
| 8176793 | Method to estimate the effect of weld location on weld strength A method to diagnose a failed weld in a welding process includes monitoring a location of a weld created on a plurality of work pieces, diagnosing the weld as a failed weld based on said location with respect to a closest edge of one of the work pieces, and identify... | 05/15/2012 |
| 7874217 | Method and apparatus for applying axial stress for weld testing A method for testing the integrity of a weld on a pipe includes the application of an axial stress on the weld during the integrity test. Ali assembly for performing the method is also provided, wherein a pair of circumferential supports are provided on the pipe on ... | 01/25/2011 |
| 7856890 | Pressure detector and method of manufacturing the same In a manufacturing method of a pressure detector, a first member that includes a sensing portion for outputting an electric signal in accordance with a pressure, a second member that includes a pressure-receiving diaphragm, and a pressure transmission member are pre... | 12/28/2010 |
| 7775123 | Weld inspection rig and related method for use A weld inspection device is disclosed. The weld inspection device comprises a first annular engagement portion surrounding a central axis and a second annular engagement portion. The first annular engagement portion has a first holed segment extending circumferentia... | 08/17/2010 |
| 7600435 | Method of determining deterioration of pressurizing performance of spot welding gun A method of determining deterioration of pressurizing performance of a spot welding, the method having: obtaining reference data that reflect a dynamic state of a servo motor in a case where a movable side electrode tip is operated normally and a wok piece is pressu... | 10/13/2009 |
| 7571654 | Friction stir welding load confirmation system A portable multi-axis load confirmation tool having a rotating ball on the end thereof follows a three-dimensional weld program path therewith. The ball reacts to an internal load cell for verifying weld program path dynamics before an actual program is run with fri... | 08/11/2009 |
| 7451661 | Friction stir welding load confirmation system A portable multi-axis load confirmation tool having a rotating ball on the end thereof follows a three-dimensional weld program path therewith. The ball reacts to an internal load cell for verifying weld program path dynamics before an actual program is run with fri... | 11/18/2008 |
| 7448280 | Method for evaluating the fatigue strength of welded joints Method for evaluating the fatigue strength of welded joints produced by melting an alloy using a specified welding technique, which method comprises the following steps: a statistically significant number N of specimens are produce... | 11/11/2008 |
| 7421370 | Method and apparatus for measuring a characteristic of a sample feature A scanning probe microscope (SPM) based measuring technique for measuring surface features of a sample fits a curve to a family of feature edge points acquired as a result of an SPM scan of the surface feature. If two curves are fit on opposed edges of the feature o... | 09/02/2008 |
| 7284447 | Apparatus and method for testing weld integrity An apparatus and method for testing weld integrity is disclosed which is portable, self-contained, adaptable for field use in most locations, and can verify the integrity of attachment welds. The testing apparatus includes a cylinder or cylinders, attachable to the ... | 10/23/2007 |
| 7181942 | Device and method for connections made between a crimp connector and wire An ultrasonic device and method obtains desirable crimp connections between a crimp connector and a wire, or bundle of wires, by assessing the desirability of connections made in a wire-to-wire connection and in other situations where two materials with good acousti... | 02/27/2007 |
| 7089802 | Method and apparatus for determining hydrogen embrittlement A method and apparatus for determining failure of a test component. The apparatus, according to a selected method, is able to determine the embrittlement potential of a selected procedure for a selected material. The apparatus is able to determine the embrittlement ... | 08/15/2006 |
| 7024943 | Device consisting at least of two parts joined together Two parts which form a device and are joined together according to the related art are joined in a complex manner and require additional elements to produce a tight joint. A device (1) is described which has two parts (3, 6), has welding pockets... | 04/11/2006 |
| 6986288 | Method for evaluating a welded part In the method for evaluating a welded part, it is performed to make an inspection press member press the welded part for connecting a plurality of wires with each other to apply a predetermined compressive load on the welded part. Next, it is performed to measure an... | 01/17/2006 |
| 6862944 | Non-destructive butt weld inspection method A non-destructive plastic butt weld inspection method in which the weld bead 42 is removed from an exterior surface of a weld zone region 44 of a butt weld and the weld zone region 44 is heated to a temperature sufficient to visualize the weld z... | 03/08/2005 |
| 6848322 | Apparatus and method for testing weld integrity An apparatus and method for testing weld integrity is disclosed which is portable, self-contained, adaptable for field use in most locations, and can verify the integrity of attachment welds. The testing apparatus includes a cylinder or cylinders, attachable to the ... | 02/01/2005 |
| 6802216 | Method and sheet like sensor for measuring stress distribution A method and sheet-like sensor for measuring stress distribution including a grid of members which change in resistance when subjected to strain, the members intersecting at internal nodes and intersecting at boundary nodes at the periphery of the grid defining a pl... | 10/12/2004 |
| 6792813 | Resistance spot weld checking tool Resistance welding is a process used to join metallic parts with electric current. A weld nugget is formed as the pieces are melted together. This weld nugget is normally circular in shape. Most welds are expected to be of a specific size based on a specific materia... | 09/21/2004 |
| 6786101 | Weld strength determination method, casing structure, casing structure for image forming apparatus, and weld strength determination method in casing for image forming apparatus This invention has as its object to facilitate determination of a weld strength of welded target members when a plurality of metal members are welded. In order to achieve this object, when a plurality of metal members are welded, a weld strength of the welded target... | 09/07/2004 |
| 6612184 | Method and apparatus for testing bonded tubular joints There is provided a method of testing a joint formed by bonding of two tubulars, which method comprises the steps of holding a first tubular; applying a force to displace a second tubular relative to the first tubular; and removing the force. The final po... | 09/02/2003 |
| 6557421 | Mandrel supported tensile test to evaluate weld bonding A tensile test apparatus and method for testing a circumferential weld on a tubular member wherein the tube region of the weld is completely supported by a mandrel and the tubular specimen is gripped on both sides of the weld along the specimen's longitud... | 05/06/2003 |
| 6453752 | Fixture for testing shear strength in tailor welded blanks A fixture is provided for testing the shear strength of a longitudinal weld which interconnects a plurality of planar blanks forming a tailor welded blank. The fixture includes a first pair of triangular shaped face plates connected to one side of the tai... | 09/24/2002 |
| 6446511 | Method and system for testing a joint which joins a first member with a second member A method and system for testing joints which join one member to another member are disclosed. The method and assembly are capable of non-destructively testing joints which join such members without damaging the members or the joints.... | 09/10/2002 |
| 6393924 | Testing method for non-destructive testing of a welded connector, a testing device and an ultrasonic welding apparatus having such a device In testing a method for non-destructive testing of a welded assembly which includes a plurality of strands of electrical conductors which are joined together into a bundle by ultrasonic welding, a defined testing force is introduced into two or more shell... | 05/28/2002 |
| 6350533 | Welded sheet metal component A sheet metal component, obtained by press-forming a one-piece metal sheet comprised of two metal sheets into a desired shape, has an expanding portion having an external appearance varying in dependence on a weld state of a weld portion of the one-piece ... | 02/26/2002 |
| 6253623 | Method for nondestructively measuring the stress of fabricated semiconductor chips A method for nondestructively and accurately determining the stress of a fabricated semiconductor chip soldered, brazed or otherwise bonded to a submount using optical microscopy and finite element analysis. Deformations on a top surface of the semiconduc... | 07/03/2001 |
| 6237408 | Coolant safety system for automated welding apparatus In an automated welding machine, where a flow of liquid coolant is supplied to welding components on the machine from a source of coolant and then returned to the source of coolant, a safety system is provided that shuts down the flow of coolant in the ev... | 05/29/2001 |
| 6234029 | Testing module for testing the strength of the welding area on a PCB A testing module for testing the strength of the welding area on a PCB is disclosed. The testing module has a plurality of first plates each provided with a plurality of pressing plates adjustably mounted thereon and a plurality of second plates each prov... | 05/22/2001 |
| 6193133 | Method and articles for evaluating welded joints Two polygon shaped articles having walls of different thicknesses are mated and welded together. Specimens cut from this composite part are used to evaluate the performance of welded joints with the influence of design, processing conditions such as weldi... | 02/27/2001 |
| 6186011 | Method of analyzing spot welded structures Method of analyzing spot welded sheet metal structures subjected to forces that promote one or more basic failure modes of either shear tension, in-plane rotation, coach peel, normal tension, or any combination of such basic modes, the method comprising: ... | 02/13/2001 |
| 6038931 | Method and apparatus for the testing of plastically deformable objects A method for testing the integrity at least two test objects, each object is made of a plastically deformable material, by a. contacting a moving means with the objects at a first point in time, the moving means at a first position and the objects at a fi... | 03/21/2000 |
| 5902935 | Nondestructive evaluation of composite bonds, especially thermoplastic induction welds Thermoplastic welding is an emerging technology targeted at significantly reducing the manufacturing cost of aerospace structure by eliminating fasteners and the touch labor associated with fasteners to prepare, install, and inspect the assemblies. Qualit... | 05/11/1999 |
| 5738268 | Method for preparing tube weld sample for internal visual inspection A process for preparing tubular coupons formed of a pair of tube lengths butt-welded together with a full depth circumferential weld includes partially diagonally cutting the coupon sample through its transverse dimension so as to leave a thin bending str... | 04/14/1998 |
| 5602341 | Test fixture for spot welds A fixture for testing the strength of a resistance spot weld connecting two test strips comprises two identical clamping frames, each having releasable clamps for gripping and holding one of the test strips. A pull bar is mounted on each clamping frame in... | 02/11/1997 |
| 5597959 | Particulate filtration screen weld joint test apparatus and associated methods To determine the tensile breaking force of a selected rod/wrap member weld joint in a metal screen of a tubular sand screen assembly used in downhole oil and gas recovery operations a test specimen, including a single rod segment and arcuate segments of t... | 01/28/1997 |
| 5415047 | Diffusion weld test fixture A weld joint test fixture for testing the strength of a weld joining seve members forming a test specimen is provided. The fixture includes a base which supports the test specimen and an attachment for applying a testing force to the test specimen while ... | 05/16/1995 |
| 5291423 | Arrangement for monitoring the quality of electric welds What is described is an arrangement for monitoring the quality of electric welds on bodies (10) for the production of cans. Welding parameter values (Fi), which have been measured on a number of bodies (10) found to be good are statistically ev... | 03/01/1994 |
| 4875376 | Guided-bend test apparatus A self-contained apparatus for testing the ductility of a weld located within an elongated specimen having means for raising and lowering a ram over the specimen. The apparatus includes a pair of legs, each having a pair of spaced-apart rails for supporti... | 10/24/1989 |
| 4789236 | Stress sensor Mechanical stress applied to a crystal (10) by a procedure for forming a bond (13) between an electrical connector (12) and a metallized surface (11) of the crystal (10) is measured to obtain a quantitative indication of the quality of the bond (13). A be... | 12/06/1988 |
| 4677856 | Guided-bend test apparatus Apparatus for testing the ductility of a weld located within an elongated specimen is used with a separate apparatus having a lowerable ram. The apparatus includes a base defining a support surface having a central opening. Each roller of a pair has a wid... | 07/07/1987 |
