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| Number | Title | Issue Date |
| 7360393 | Methods and apparatus for measuring impact toughness of a tie rod end A method is provided for measuring impact toughness of a tie rod end through use of a pendulum-type impact testing machine. The method includes attaching a first member of the tie rod end with respect to a base of the pendulum-type impact testing machine. The pendul... | 04/22/2008 |
| 6848321 | Bond strength measurement system using shock loads A system and method for non-destructively testing the strength of bonded joints, particularly a bonded joint between two composite components, is provided. The method generally includes activating a source of rapid surface pressure application against a bonded assem... | 02/01/2005 |
| 5242830 | Process and device for revealing impact(s) received by a substrate A process and device for revealing impact(s) received by a substrate make use of a film capable of being deposited onto said substrate and consisting of a matrix in which are embedded microcapsules intended to be broken during the impact and thus to relea... | 09/07/1993 |
| 4864867 | Determining fracture mode transition behavior of solid materials using miniature specimens A method of determining fracture mode transition behavior (FMTB) of solid materials by using stress field modified miniature specimens. The method is an improvement in the method of determining mechanical behavior information from specimens only so large ... | 09/12/1989 |
| 4802366 | Apparatus and process for impact testing of plastics An impact testing apparatus and process are provided. The apparatus comprises a thickness verifier to measure the thickness of each specimen. The apparatus further comprises a notcher and a notch verifier which are operative to first cut notches in a test... | 02/07/1989 |
| 4776202 | Apparatus and methods for testing surface properties of a material An apparatus for testing the surface properties of a material is disclosed. The apparatus includes an indentor which is suspended above the surface of a sample and dropped onto the sample. Several testing methods are also disclosed. Surface toughness is m... | 10/11/1988 |
| 4546654 | Impact testing machine An impact testing machine in which a striker held by a fixed mounting is struck by a striker carried by a pivoted arm. A motor, connected to the arm by a clutch, accelerates the arm at such a rate that the striker achieves useful speed within one revoluti... | 10/15/1985 |
| 4534205 | Method of shock testing aluminum alloy welded joints Aluminum alloy armor weld joints are ballistic shock tested by first sepaely determining the ballistic impact capability of the components to be joined by the weldment by firing a plate proofing projectile at 0° obliquity at each of said components at d... | 08/13/1985 |
| 4422320 | Wedge tightness measuring device A device for determining the tightness of a wedge used to close the slot of a dynamoelectric machine and firmly restrain the conductors installed in the slot, is in the form of a tapping hammer or similar tapping tool. The heat of the hammer contains an a... | 12/27/1983 |
| 4418563 | Method of determining the impact fracture toughness KID by means of impact tests A method of determining the impact fracture toughness Kid of construction materials, for example structural steels or plastic materials, without the need of performing a load measurement at the striking hammer is provided. The elastic response ... | 12/06/1983 |
| 4405243 | Cryogenic impact testing method and machine A cryogenic impact testing method of Charpy's and falling weight types which can test a test piece without substantially exposing the test piece with the atmospheric air under the same test piece cooling space, temperature controlling space and impact tes... | 09/20/1983 |
| 4085609 | Dropweight sample tester This invention provides a process and apparatus for determining the energy absorbed by a test-piece of material during its fracture. The test-piece is supported horizontally between two separated anvils, and a dropweight is released from a position above ... | 04/25/1978 |
