How Drones Can Work With, Not Against, Inspectors

UAV Flying over Building - Drone Inspections
UAV Flying over Building - Drone Inspections

Recent advances in drone technologies (also known as unmanned aerial vehicles, UAVs) and non-destructive testing (NDT) have led to significant changes in the way data is collected in the field, especially when it comes to structural inspections and repair/rehabilitation assessments.

How Drones Can Work With, Not Against, Inspectors

Traditional Inspections Just Aren’t Cutting It

Traditional bridge inspection methods such as chain-dragging and visual inspections are not only time-consuming and labor-intensive, but they are also rather subjective, relying on the experience and knowledge of the inspector.

For instance, until recently, corrosion detection depended on the inspector’s ability to visually observe rust staining, cracking, and spalling.

NDT Offers Objective Results

Advances in NDT have led to the development of more precise testing methods that are based on physical relationships between the measured parameters and concrete performance rather than the ability of human beings to detect defects.

For example, new NDT methods for corrosion detection (such as the linear polarization resistance method) are able to detect corrosion initiation before the physical effects of corrosion become visible. This allows engineers to begin repair/rehabilitation work much sooner and, subsequently, decrease the risk of deterioration caused by corrosion. e the risk of deterioration caused by corrosion.

The same benefits also apply to other NDT methods such as electrical resistivity, ground-penetrating radar, and ultrasonic pulse velocity to detect delamination and cracking. However, even with these NDT methods, the process of collecting data is still relatively time-consuming (depending on the method) and may not always be possible due to accessibility issues.

Combining UAV and NDT Technologies

In recent years, we’ve no doubt heard a lot about drones being used in the construction industry to inspect everything from roofs and buildings to utilities and bridges. The main appeal of UAVs is precisely their ability to overcome huge obstacles when it comes to data collection, specifically, for larger projects.

Let’s pretend we’re inspecting a concrete bridge

Inspection of Concrete Bridge for Corrosion
UAVs and drones take care of accessibility issues associated with data collection.

By mounting an NDT device on a UAV, an inspector can program the UAV to take measurements and collect images of the degrading area. The collected NDT measurements, along with the photographs, can be used to assess the degradation mechanism, identify areas requiring repair, assess the propagation of the deterioration issue, and arrive to conclusions on the urgency of required repairs.

Immediate Benefits of Drone Inspections for Bridges

In addition to reducing the amount of labor and risk associated with having a human inspector collect data, drone inspections give bridge inspectors and engineers more time to:

  • Analyze the data,
  • Research causes of failures, and
  • Recommend repair strategies.

Drone inspections also save effort in documentation, since the newest NDT methods can automatically generate reports and perform several analyses that are of direct interest to engineers and inspectors.

Considering all of these time and cost savings, as well as the decreased safety risks, it seems that a move towards embracing such technologies will become necessary in the not-too-distant future.

Learn More About iCOR

6 Responses

  1. I’m more than happy to find this page. I wanted to thank you for this fantastic read!! I definitely savored every bit of it and I have you book-marked to see new things on your blog.

  2. The presence of drones in construction means significant changes within the industry. Drones have already begun changing the way the construction industry operates, and those changes will have continued and lasting effects.

  3. Hello I am a student studying Unmanned Aerial Systems. I was tasked with finding out what frequency the iCOR device is using on the electromagnetic scale. I understand this is a newer device and you are still in the early stages on the drone inspection systems. We are also wanting to know how the drone uses this technology? Does the device physically have to touch the concrete? or with using the drone with the iCOR device, can it be done without probing?

    Thank you!

  4. Yes I would. That way when you guys get further along with it, I’ll have a better idea of what it is and how to use it within my company.


  5. I work for a county in Ohio doing bridge inspection and I was wondering when do you think something like this would be available and at what cost? Thanks

Leave a Reply

Your email address will not be published. Required fields are marked *

Related Articles

Roxi press release

Giatec’s Pioneering AI Programs for Sustainable Concrete Testing and Reducing CO2 Emissions

In late 2020, Giatec announced that our artificial intelligence (AI) program RoxiTM has been trained with the funding provided by Sustainable Development Technology Canada (SDTC), which will help in the reduction of cement usage during concrete testing. For those that are unfamiliar with Roxi’s functions, require deeper insights into how and why this funding came about, or are curious about the approach Giatec takes towards AI in the concrete industry, we encourage you to dive right into this blog post. Make sure to check out other linked resources throughout the article…

Concrete strength monitoring with thermocouples

Choosing the Right Concrete Thermocouple for Your Jobsite

What Is a Concrete Thermocouple?  In layman’s terms, a thermocouple is an electric device that measures temperature, essentially making it a type of thermometer. That being said, it is not the kind of thermometer you would use to measure your body temperature when running a fever, or to deduce what the atmospheric weather is today, or as an in-built mechanism within your refrigerators and heaters. So, what exactly sets a concrete thermometer apart?  It takes two metals to form a thermocouple, both of which are wires that are welded, crimped, or twisted together, and It takes two metals to form a thermocouple, both of which are…

The Importance of Monitoring Temperature Differentials in Mass Concrete

Closely monitoring concrete temperatures is critical for ensuring proper strength development of concrete structures, regardless of their application or size. However, when it comes to mass concrete structures, temperature differentials also need to be considered due to the risk of a large difference between the relatively hot internal temperature and cool surface temperature. If a too-large temperature differential occurs, the surface of mass concrete will start cracking, which is detrimental to its durability and the length of its service life. What is Mass Concrete? Mass concrete…

We use cookies to provide you with a better experience, analyze site traffic and assist in our marketing efforts. By continuing to use this website, you consent to the use of cookies in accordance with our Privacy Policy Page.