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    METHOD FOR DETECTING FLAW INSIDE OBJECT, APPARATUS FOR LOCATING THE FLAW, AND DISPLAY
    1.
    发明专利
    METHOD FOR DETECTING FLAW INSIDE OBJECT, APPARATUS FOR LOCATING THE FLAW, AND DISPLAY 失效

    公开(公告)号：JPH10142179A

    公开(公告)日：1998-05-29

    申请号：JP29802597

    申请日：1997-10-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： RINGERMACHER HARRY I ,  ARCHACKI JR RAYMOND J ,  VERONESI WILLIAM A

    IPC: G01N25/72

    Abstract: PROBLEM TO BE SOLVED: To provide a method in which a flaw inside an object can be located precisely, in which the size of the flaw can be measured precisely, which can be automated and which is objective when the method is used for a complicated shape, a complicated size and an uneven surface to be heated. SOLUTION: A system which partitions a flaw inside an object is composed of a heater which heats the surface of the object, of a recorder which records the intensity of a pixel on the heated surface, of a means which decides the contrast of the pixel on the basis of the intensity of the pixel and of a means which decides the size and the position of the flaw inside the object on the basis of the contrast of the pixel. Then, the contrast of every pixel is monitored regarding a continuous thermal image, and the position of the flaw inside the object is decided by using the contrast of the pixel. The surface of the object and the flaw which is situated under it are drawn on an image print at a color spectrum which is related to the depth of the flaw having a specific color.

    3.
    发明专利
    未知

    公开(公告)号：DE69735744T2

    公开(公告)日：2007-04-12

    申请号：DE69735744

    申请日：1997-10-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： RINGERMACHER HARRY I ,  VERONESI WILLIAM A ,  ARCHACKI RAYMOND J

    IPC: G01N25/72

    Abstract: The method comprises: a. heating the surface of the object, b. recording a number of thermal images of each resolution element on the heated surface over a period of time, where each of the recorded resolution elements corresponds to a pixel, c. determining individual pixel intensity for each of the pixels in each of the thermal images, d. determining mean pixel intensity for each thermal image, e. obtaining pixel contrast for each of the pixels in each of the thermal images subtracting the mean pixel intensity from the individual pixel's intensity, and d. determining depth of the flaw within the object based upon the pixel contrast. The depth of the flaw is determined using the pixel contrast, obtaining the contrast peak, and thereby determining the location of the flaw using the following formula: ? l = kappa tau peak3? where tau peak is the peak time, l is the depth of the flaw, and kappa is the thermal diffusivity of the object.

    4.
    发明专利
    未知

    公开(公告)号：DE69735744D1

    公开(公告)日：2006-06-01

    申请号：DE69735744

    申请日：1997-10-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： RINGERMACHER HARRY I ,  VERONESI WILLIAM A ,  ARCHACKI RAYMOND J

    IPC: G01N25/72

    Abstract: The method comprises: a. heating the surface of the object, b. recording a number of thermal images of each resolution element on the heated surface over a period of time, where each of the recorded resolution elements corresponds to a pixel, c. determining individual pixel intensity for each of the pixels in each of the thermal images, d. determining mean pixel intensity for each thermal image, e. obtaining pixel contrast for each of the pixels in each of the thermal images subtracting the mean pixel intensity from the individual pixel's intensity, and d. determining depth of the flaw within the object based upon the pixel contrast. The depth of the flaw is determined using the pixel contrast, obtaining the contrast peak, and thereby determining the location of the flaw using the following formula: ? l = kappa tau peak3? where tau peak is the peak time, l is the depth of the flaw, and kappa is the thermal diffusivity of the object.

    Arrangement for detecting metallic particles carried by a fluid
    5.
    发明专利
    Arrangement for detecting metallic particles carried by a fluid 未知

    公开(公告)号：AU656840B2

    公开(公告)日：1995-02-16

    申请号：AU3296393

    申请日：1993-02-10

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： VERONESI WILLIAM A ,  WEISE ANDREW P ,  REED ROBERT W ,  RINGERMACHER HARRY I

    IPC: G01N15/00 ,  G01N15/06 ,  G01N27/22 ,  G01N27/72 ,  G01V3/10 ,  G01N27/02

    Abstract: An arrangement for detecting metallic particles carried by a fluid includes a metallic probe member which surrounds an elongated passage through which the fluid flows and which is constituted by a split tube having two marginal portions delimiting a gap which extends along said passage and completely separates the marginal portions from one another. Capacitors are arranged at the gap and alternating electric current is caused to flow in the probe member around the passage so that the probe member and the capacitors form a tank circuit having resonance characteristics that are influenced by any inclusion then present in the passage in a manner dependent on the electromagnetic properties of the inclusion. The character of any metallic particle then present in the passage is determined from variations in the alternating electric current that reflect the influence of such metallic particle on the resonance characteristics.

    ENSAYOS NO DESTRUCTIVOS: TERMOGRAFIA DE PROFUNDIDAD TRANSITORIA.
    7.
    发明专利
    ENSAYOS NO DESTRUCTIVOS: TERMOGRAFIA DE PROFUNDIDAD TRANSITORIA. 未知

    公开(公告)号：ES2262168T3

    公开(公告)日：2006-11-16

    申请号：ES97118977

    申请日：1997-10-30

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： RINGERMACHER HARRY I ,  VERONESI WILLIAM A ,  ARCHACKI JR RAYMOND J

    IPC: G01N25/72

    Abstract: Procedimiento para detectar un defecto (1 a 14) en un objeto que presenta una superficie, estando dividida dicha superficie en una serie de elementos de resolución, que comprende las etapas siguientes: a. calentar la superficie del objeto; b. grabar una pluralidad de imágenes térmicas de los elementos de resolución sobre dicha superficie calentada a lo largo de un periodo de tiempo, en el que cada uno de dichos elementos de resolución corresponden a un píxel; c. determinar la intensidad de píxeles individual para cada una de dichas imágenes térmicas; d. determinar la intensidad media de píxeles para cada imagen térmica; e. obtener el contraste de píxeles para cada uno de dichos píxeles en cada una de dichas imágenes térmicas restando dicha intensidad media de píxeles de dicha intensidad de píxeles individual; y f. determinar la profundidad de un defecto en el objeto basándose en dicho contraste de píxeles.

    ARRANGEMENT FOR DETECTING METALLIC PARTICLES CARRIED BY A FLUID
    9.
    发明专利
    ARRANGEMENT FOR DETECTING METALLIC PARTICLES CARRIED BY A FLUID 未知

    公开(公告)号：AU4848790A

    公开(公告)日：1990-08-01

    申请号：AU4848790

    申请日：1989-12-22

    Applicant: UNITED TECHNOLOGIES CORP

    Inventor： VERONESI WILLIAM A ,  WEISE ANDREW P ,  REED ROBERT W ,  RINGERMACHER HARRY I

    IPC: G01N15/00 ,  G01N15/06 ,  G01N27/22 ,  G01N27/72 ,  G01V3/10 ,  G01N27/02

    Abstract: An arrangement for detecting metallic particles carried by a fluid includes a metallic probe member which surrounds an elongated passage through which the fluid flows and which is constituted by a split tube having two marginal portions delimiting a gap which extends along said passage and completely separates the marginal portions from one another. Capacitors are arranged at the gap and alternating electric current is caused to flow in the probe member around the passage so that the probe member and the capacitors form a tank circuit having resonance characteristics that are influenced by any inclusion then present in the passage in a manner dependent on the electromagnetic properties of the inclusion. The character of any metallic particle then present in the passage is determined from variations in the alternating electric current that reflect the influence of such metallic particle on the resonance characteristics.

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