Borescopes allow for inspections in tight spaces where it would not be possible by other means. It can be useful for time-sensitive non-destructive testing applications. A borescope may be useful for record-keeping by taking images to be retrieved during planning or maintenance work. Here are features of modern borescopes that facilitate NDT evaluations.
Rigid and Flexible Borescope Devices
A borescope typically has an eyepiece on one end and a camera on the other, with both connected through a tube. A rigid borescope can only view objects in a straight line. Despite the limitation, they are less costly than their flexible counterparts.
A flexible device may be more expensive, but it generates reliable borescope inspection reports. Whether you are inspecting a turbine or pipe cavity, it’s more practical for looking into hazardous or hard-to-reach places. The most recent devices can reach a depth of 100 ft into a cavity.
Use of Fiber Optic Illumination
One of the challenges of a borescope inspection is lighting. The hard-to-reach places are often dark, and they may produce images that are not reliable for detecting anomalies. Fitting a lamp on the borescope will only make it bulky and inefficient.
That’s why borescope services use devices with fiber optic for illumination. The fibers are almost as thick as human hair, but they can transmit light through the tightest spaces. They are useful for non-destructive testing, where the fiber can also act as a sensor.
Articulation Around a Bend
The tubing connecting the eyepiece and the camera should be flexible and lightweight. In most cases, the device has to manipulate cables to move the camera into position. But using a bundle of wires can present problems when there are curves in the cavity you need to inspect.
Instead of using devices with cables, borescope services today use air compression. The compressed gas can travel through greater distances without experiencing issues such as wire tension. It can work through multiple curves, and it will still produce accurate data.
Video Borescope Services
Video and still images can enhance productivity and speed up NDE inspections. The photographs are more relatable to maintenance personnel than electromagnetic simulations. Modern devices can produce high-resolution images from the interior of turbines without disassembly.
Borescope may also have inbuilt features to enhance accuracy. They can combine intelligent measurements with advanced crack detection capabilities. As a result, they can generate precise measurements for the size and the extent of the cracks.
The Time Factor
In non-destructive testing, time can be a significant factor that often determines the method of assessment. For example, an airplane’s engine needs to be checked on time to prevent flight disruptions. In some instances, a fiberscope may be sufficient, while in others, the cost of the process is critical.
Borescope services utilize different types of devices to capture anomalies in different surroundings. It is essential to evaluate your needs to determine the best approach before testing begins. Your choice of testing strategy will depend on your objectives. An experienced professional can offer a viable and cost-effective solution for your applications.