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1. 发明申请

WO1992011506A1 STRUCTURAL EXAMINATION USING HOLOGRAPHIC INTERFEROMETRY 审中-公开
标题翻译：使用全息图进行结构检查
公开(公告)号：WO1992011506A1
公开(公告)日：1992-07-09
申请号：PCT/AU1991000595
申请日：1991-12-20
申请人： UNISEARCH LIMITED , BAIRD, John, Patrick , CLARK, Robert, Keith
发明人： UNISEARCH LIMITED
IPC分类号： G01B09/021
CPC分类号： G01B11/164 , G01B9/021
摘要： In-situ, nondestructive examination to test the efficacy of a rivetted, bolted or bonded join of metal sheets (10, 11), or to test whether a composite material is faulted, or to test whether a multi-layer patch is bonded properly, involves the creation of an interferometric hologram. A photographic film or plate (20) is mounted closely above, and isolated vibrationally from a region (21) of a structure containing the join, composite material or patch. The film or plate is illuminated by the expanded beam (26) from a laser (24) firstly when the structure is in a first state of stress, and secondly when the structure is in a second state of stress (the change in stress being sufficient to deform the region over which the film or plate is mounted). At each illumination, a diffraction pattern is produced in the emulsion of the plate or film by interference between the illuminating beam and that part of it which is reflected from the region. The two diffraction patterns combine to produce a fringe pattern in the emulsion. That fringe pattern, when compared with the fringe pattern produced by a good join or a non-faulted composite body or patch, provides information about the region under investigation. The technique is especially useful for testing the joins in the skin of an aircraft fuselage, or potentially damaged composite structures.
摘要翻译：进行非破坏性检查，以测试金属板（10,11）的铆接，螺栓连接或粘合连接的功效，或测试复合材料是否发生故障，或测试多层贴片是否正确连接，涉及创建干涉全息图。照相胶片或印版（20）紧密地安装在上方，并从包含接合，复合材料或贴片的结构的区域（21）振动分离。首先当结构处于第一应力状态时，薄膜或板被来自激光器（24）的膨胀梁（26）照亮，其次当该结构处于第二应力状态时（应力的变化是足够的以使安装薄膜或板的区域变形）。在每个照明下，通过照射光束和从该区域反射的部分之间的干涉，在板或膜的乳液中产生衍射图案。两种衍射图案结合在乳液中产生条纹图案。当与良好连接或非断层复合体或贴片产生的边缘图案相比时，该条纹图案提供关于被调查区域的信息。该技术对于测试飞机机身皮肤中的连接或潜在的损坏的复合结构特别有用。

2. 发明申请

WO1997024575A1 PROJECTILE LOCATION SYSTEM 审中-公开
标题翻译：项目位置系统
公开(公告)号：WO1997024575A1
公开(公告)日：1997-07-10
申请号：PCT/AU1996000837
申请日：1996-12-24
申请人： UNISEARCH LTD. , BAIRD, John, Patrick , LAI, Joseph, Cho, Sam
发明人： UNISEARCH LTD.
IPC分类号： F41J05/06
CPC分类号： G01S5/22 , F41J5/06
摘要： A projectile location system (10, 20, 30) includes a plurality of microphones (12, 13, 14) adapted to receive the acoustic wave generated by a projectile as it passes through a planar target region (11, 21, 39). Differences in position are resolved using a statistical technique, ideally a cross correlation technique, in order to determine relative distance of the projectile from various ones of the microphones. The relative distance information is then utilised in a triangulation operation to obtain an estimate of position of the projectile in the plane of the target (11, 21, 39). In particular, a baffle (26) is interposed between the microphones and at least a portion of the target (11, 21, 39). In another particular form, the microphones are aligned along at least two separate axes which intersect at an obtuse angle.
摘要翻译：射弹定位系统（10,20,30）包括多个麦克风（12,13,14），适于在射弹通过平面目标区域（11,21,39）时接收由射弹产生的声波。使用统计技术来解决位置差异，理想地是互相关技术，以便确定射弹与各种麦克风的相对距离。然后将相对距离信息用于三角测量操作中以获得射弹在目标平面中的位置估计（11,21,39）。特别地，在麦克风和目标物（11,21,39）的至少一部分之间插入挡板26。在另一个特定形式中，麦克风沿着与钝角相交的至少两个分开的轴线排列。

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