相控阵轮式探头
Olympus推出一款新型相控阵轮式探头：RollerFORM，用于检测复合材料，以及其它一些常用于航空航天行业的表面光滑的材料。价格合理、操作方便的RollerFORM不仅可以替代全二维编码系统，而且还提供了一种与水浸技术等效的可行性很强的检测技术。
RollerFORM经专项开发研制，其轮胎由一种独特材料制成，可以确保完成与水浸检测相仿的高质量超声检测。只需略施耦合剂，稍微用点力，RollerFORM就可提供优质的耦合效果，并获得很强的信号，即使在难以扫查的位置，也能做到这点。
RollerFORM与一台相控阵仪器，如：OmniScan或FOCUS LT，结合在一起使用，通过使用零度超声声束，可以对制造和维护环境中的工件和材料进行无损检测。常见的应用包括复合材料芯材的分层定量和多孔性的量化分析，以及对铝板壁厚损失的监控。设计符合人体工程学要求的RollerFORM，有一个整合型步进点击器按钮。检测人员使用这个按钮可以采集多个单线C扫描，并将这些C扫描实时合并，形成单一图像，从而绘制出被测材料表面的图像。内置激光导向装置方便了笔直、精确的单线扫查。
RollerFORM不仅可以提供优质的耦合效果，而且其轮胎由一种与水的声阻抗非常匹配的独特材料制成。这种设计特点可以使能量有效地传播到工件中，而且不会产生不希望出现的回波。使用5 MHz相控阵探头型号时，可以在复合材料中获得理想的1毫米近场分辨率。3.5 MHz相控阵探头型号更适于检测某些较厚的、衰减性较强的材料。由于轮胎为透明材料，因此检测人员可以容易地辨别水舱内出现的气泡或污染物。
| 说明 | 数值 |
| 典型的近表面分辨率（3 x 3分层材料） |
5 MHz型号为1毫米。
3.5 MHz型号为1.5毫米。 |
| 二次界面回波的位置 （复合材料中) | 50毫米 |
| 最小表面曲率（凸面半径） | 50毫米 |
| 外型尺寸（长 x 宽 x 高） | 235 x 145 x 150毫米 |
| 重量（不含水） | 1.5公斤 |
Can the RollerFORM be used for applications other than aerospace?
The RollerFORM design is optimized for inspection of defects present in the volume of CFRP panels that are 2 to 50 mm thick. However, there are certainly other applications for which the RollerFORM can be advantageous, keeping in mind that the maximum frequency available is 5 MHz and the maximum allowable surface temperature is 80 °C (maximum 2 minutes continuous inspection time). To explore the possibility for other applications, please contact your local Olympus
representative.
Can the RollerFORM inspect honeycomb panels?
The RollerFORM can detect defects present in the volume of CFRP skin that is 2 to 50 mm thick. The RollerFORM can also be used for near-side detection of disbonding between CFRP layers (thicker than 2 mm) and honeycomb structures for certain material combinations. However, the BondMaster remains the recommended method for disbond detection between CFRP and honeycomb and for delamination detection in CFRP layers thinner than 2 mm.
Can the RollerFORM be used for corrosion mapping inspection?
Yes. Even though the HydroFORM remains the ideal choice for corrosion inspection, the RollerFORM is a suitable option for corrosion applications that do not require optimum near-surface resolution (NSR) or high frequencies. Furthermore, the RollerFORM can be particularly useful for quick checkups or when performing strip inspections on the longitudinal axis of pipes that are 4 in. OD or greater. The RollerFORM has a 3 mm NSR in steel (as opposed to 1.5 mm for the HydroFORM) and has a maximum
frequency of 5 MHz. The HydroFORM is also better suited for integration with full 2-D mapping scanners.
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