The Advantages of Non-Destructive Testing: Learn all about rebar detectors
Non-destructive testing is an extremely advantageous tool in any rehabilitation job, and when dealing specifically with reinforced concrete, knowing all about rebar detectors can be essential. A rebar detector is a general term used to group the category of products that comprise a range of instruments used to locate and determine size and depth of steel reinforcing bar in concrete.
All About Rebar Detector
Presently, both industry and academic research fields are rapidly discovering new and improved methods of detection, primarily based on different radar techniques. The subject of rebar detection is fast-paced and new products are being released on a regular basis, with devices varying from microwave thermoreflectors, to simple impact-echo radar systems (sound waves traveling through concrete will be affected by a different medium: reinforcement steel). However, when gathering information all about rebar detector products, it makes sense to start with the most widely used:
The most common rebar detectors use a low-frequency electromagnetic field to locate ferrous (steel) objects within a structure. This is a tool which many rehabilitation engineers will know all about. Rebar detector devices such as these have been used for years to determine possible damage or flawed design in concrete structures without the need for invasive or destructive means -- obviously there is a substantial benefit to examine a structure without causing it any damage. However, learning all about rebar detectors requires one to stay ahead of current and innovative products. It’s essential to maintain a thorough understanding of all rebar devices.
Many manufacturers and firms are beginning to see the benefits of GPR (Ground Penetrating Radar). The main difference arises from a lack of magnetic field, replaced instead by a high-frequency pulse. This is an asset when dealing with structures that have non-ferrous reinforcement (undetectable with the old devices) which include hospitals where the steel, and electromagnetic waves, can disrupt MRI machines. This new method is one that any rehabilitation engineer should definitely stay current with. When learning or educating all about rebar detector technology, GPR is definitely on the cutting edge.
Whatever instrument used, rebar detection is without question an effective and beneficial tool in the field of structural health monitoring (SHM). More importantly, knowing all about rebar detectors while staying current with new technology, is an effective tool in any engineer’s career.