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Ir test of rotating bands

阅读:109发布:2024-01-26

专利汇可以提供Ir test of rotating bands专利检索,专利查询,专利分析的服务。并且A method and apparatus for evaluating the integrity of the seating of a sintered iron rotating band on a surface of a body such as a projectile, which method is non-destructive. The method includes rotating the body while applying radiated localized heat to the body over an area encompassing the rotating band. Detecting the heat emanating from the rotating band and that surface of the body proximate thereto. Infrared scanning at a point remote from the application of the heat provides an indication of the emanating radiated energy and is dependent on the heat dissipation through the body from the surface as well as from the subject band. Where the band is improperly seated so as to form an air gap between the band and the body, the heat or energy will be conducted away from the band surface at a slower rate than from the adjoining body surface due to the insulation introduced by the air gap. Thus, these thermal differentials detected in the case of an improperly seated band are direct indications of the condition of the band seating and the differential is proportional to the magnitude of the clearance under the band.,下面是Ir test of rotating bands专利的具体信息内容。

1. An apparatus for non-destructively determining the integrity of an annular band mounted on the surface of a cylindrical body which comprises: support means for rotatably supporting said body coaxially of said band; heat irradiating means disposed for heating a narrow localized area transverse to said band and including at least said band; and infrared detection means operatively positioned for scanning an elongated transverse segment including both said band and adjacent annular portions of said body rotationally displaced from said localized area, and including means for indicating the infrared energy emanating from said band and said body portions; whereby said detection means will provide different values of heat radiation resulting from different amounts of heat conduction from said band to said body produced by proper and improper seating of said band.
2. The apparatus according to claim 1 wherein said localized area includes both said band and said body portions, to detect different values of heat radiation resulting from different amounts of radial heat conduction from said band to said body produced by proper and improper radial seating of said band.
3. The apparatus according to claim 1 further including a black body reference panel disposed on the side of said body opposite said detection means.
4. The apparatus according to claim 1 wherein said annular band is mounted in an annular groove in the surface of said body, and said localized area is limited to said band to detect different values of heat radiation resulting from different amounts of lateral heat conduction from said band to said body produced by proper and improper lateral seating of said band in said groove.
5. A method of non-destructively determining the seating integrity of an annular band mounted on the surface of a cylindrical body which comprises the steps of: supporting and rotating said body about an axis coaxial with said band; heat irradiating a narrow localized area transverse to said band and including at least said band; and scanning an elongated transverse segment, including said band and adjacent portions of said body, rotationally displaced from said localized area, for detecting and indicating different values of infrared heat radiation resulting from different amounts of heat conduction from said band to said body produced by proper and improper seating of said band.
6. The method according to claim 5, further including the steps of positioning an ambient temperature black surfaced reference panel behind said body, and scanning said panel with said segment.
7. The method according to claim 5, wherein both said band and said adjacent body portions are heat irradiated in the second step and scanned in the third step, for detecting different amounts of radial heat conduction from said band to said body.
8. The method according to claim 5, wherein said band is mounted in an annular groove in said body, and the heat irradiation of the second step is limited to said band while both said band and said body portions are scanned in the third step, for detecting different amounts of lateral heat conduction between said band and the side walls of said groove.
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