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What is Lock-In Thermography?

Lock-In Thermography NDT Technique

The principle of lock-in thermography is based on the application of a periodic input energy wave (i.e. thermal emitter, ultrasound, microwave, eddy current, flash or xenon lamp, halogen lamp, or laser) to the surface of the object being examined and analyzing the resulting local temperatures on the surface of the object.

When the input energy wave penetrates the object’s surface, is it absorbed and phase shifted. When the input wave reaches areas within the object where the thermophysical properties are not homogeneous in relation to the surrounding material, (i.e. at delaminations or inclusions), the input wave is partially reflected.

The reflected portion of the wave interferes with the incoming input wave at the surface of the object, causing an interference pattern in the local surface temperature, which oscillates at the same frequency as the thermal wave.

The internal structure of the object being examined can then be derived by evaluating the phase shift of the local surface temperatures in relation to the input energy wave. The ability to derive internal thermophysical inconsistencies within the object, however, requires that the input energy source be used at an optimal frequency, which depends on both the thermophysical characteristics of the object as well as its thickness.

Lock-In Thermography

The principle measurement setup is shown here.

MoviTHERM Lock-In Thermography NDT Solution

MoviTHERM Lockin Thermography Non-Destructive Test System. This system is a Lockin Thermography System used for defect detection in materials, such as composites, metals and non-metals. Lockin Thermography allows the detection of some very weak signals even below the noise floor of the camera in the micro-Kelvin range. This ability makes this method the perfect candidate for locating tough to find material defects.

In this video we explain the application of the Lock-In Thermography method using a FLIR camera and an irNDT system.

Find out more about the MoviTHERM irNDT Infrared Non-Destructive Testing Solutions

Download Our Starter Guide

For Infrared NDT Systems

Infrared Non-destructive Testing Guide

  • Learn how Infrared NDT works

  • Learn what type of defects you can find

  • Learn how large of an area you can inspect

  • Learn how this method compliments UT inspections

  • Learn how to save valuable inspection time

2024-08-16T17:29:45-07:00Thursday, March 21, 2024|Blog|
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What software is compatible with the FLIR AX8?

Software Compatible with FLIR AX8

The following is a list of software compatible with the FLIR AX8 camera

 

Software Support Comment
FLIR IP Config

Note
The FLIR IP Config version must be
1.9 or later.
 Yes
  • Detecting FLIR AX series cameras on the network.
  • Assigning IP addresses.
  • Accessing the built-in camera web server.
Camera web server Yes Configuration and setup of analysis and alarms.
FLIR Tools/Tools+ No –
FLIR IR Monitor No –
EthernetIP & Modbus TCP Yes Connecting to a PLC for readout of analysis and alarms.
Pleora Ebus SDK No –
FLIR GEV Demo No –
ThermoVision System Developers Kit No –
ThermoVision LabVIEW Digital Toolkit No –

 

2024-08-30T15:52:53-07:00Thursday, March 21, 2024|Support|
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Solar Cell Inspection Using Thermal Imaging

Solar Cell Inspection Using Infrared NDT

MoviTHERM’s Solar-CHECK solution uses lockin thermography to inspect for electrical shunts and other defects in thin-film as well as in thick-film photo-voltaic cells. The cells can either be excited electrically or optically.

More info about MoviTHERM Solar-Check

Download Our Starter Guide

For Infrared NDT Systems

Infrared Non-destructive Testing Guide

  • Learn how Infrared NDT works

  • Learn what type of defects you can find

  • Learn how large of an area you can inspect

  • Learn how this method compliments UT inspections

  • Learn how to save valuable inspection time

2024-08-16T17:29:54-07:00Thursday, March 21, 2024|Blog|
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Performing a Thermal Camera Calibration

How to Perform a Thermal Camera Calibration

Thermal Camera Calibration

We often get asked if the calibration of an infrared or thermal camera can be performed in the field, by the customer. While this question appears straight-forward, further clarification is necessary in order to avoid confusion. Some infrared cameras are inherently not temperature calibrated by the manufacturer. The purpose of these cameras is to simply distinguish between the hot and cold regions of a scene,  in relative terms. Typically, these types of cameras output a black and white or monochrome image for surveillance applications. We also refer to these applications as performing a qualitative inspection vs. a quantitative inspection. On the other hand, there are temperature calibrated, true thermography cameras, that are being used to perform absolute temperature measurements. These are calibrated at the factory and need to be re-calibrated from time to time. So, the question about calibration really becomes a two-part question. The first part is this: Is the camera a calibrated, thermography camera, or an uncalibrated IR camera? Assuming calibration is an option for your camera, then we can move on to the second part of the question

Can I (re-)calibrate a thermal camera myself?

The factory calibration of a thermal camera is usually good for up to one year. Depending on the purpose of the camera and your company policy on maintaining calibrations for equipment, you may have to account for getting your thermal camera re-calibrated. Unfortunately, this calibration can only be performed by the camera manufacturer.

There are several reasons for this. In order to calibrate a thermal camera, one must perform a multi-point calibration. In other words, multiple temperature samples, spanning the entire temperature range of the camera, need to be presented to the camera in succession. The camera detector, readout electronics, and lens will experience temperature drift due to heat dissipation during the calibration. This would create errors during the calibration that may exceed the specification of the camera. Using just one or two black bodies wouldn’t suffice, since the settling time of any black body would most likely exceed the time one should take for the calibration in the first place. In practice, manufacturers mitigate the potential issues by using an array of black bodies programmed at different temperature points across the desired temperature range of the camera. A robotic arm can then quickly move the camera from black body to black body, thus greatly reducing the time that the camera has to wait before calibrating the next temperature point.

The photo on the left shows a calibration laboratory designed for that purpose. In addition, the manufacturer has to save the calibration values in the non-volatile memory of the camera’s electronics. An end-user usually does not have access to that part of the camera. These are just some of the reasons why an end-user cannot perform a re-calibration of a thermography camera.

Can I add temperature calibration to an infrared camera?

Looking back to the first part of the question, suppose you have an uncalibrated infrared camera. What are your calibration options in that case? There is a significant cost difference between an infrared camera and a calibrated thermography camera. Hence, technology-savvy folks are often wondering, why they couldn’t just use a thermocouple and perform a two-point calibration. One point at the lower end of the temperature range and one at the upper temperature range. Then just map the intensity values of the camera to these two points and voila – we have a temperature calibrated camera. Well, in reality, it isn’t that simple.

Here is why:

First, as we have learned from the setup of the calibration laboratory, a multi-point calibration is necessary to get any sort of accuracy out of a camera. This is due to the non-linearity in the detector and possibly other parts of the electronics. A multi-point lookup table is required in combination with some complex curve fitting and some other secret sauce in order to extract accurate temperature readings from a thermal camera.

To make matters worse, there is also temperature drift. The detector experiences different temperatures, partially due to ambient temperature changes, partially due to heat dissipation of the camera electronics. The same is true for the lens as well as the readout electronics. All these constantly varying temperatures need to be measured and compensated for. One mechanism that performs this job is the ‘NUC’ flag. NUC stands for non-uniformity calibration. It is a miniature black body that regularly drops in front of the detector, making a clicking noise when activated. The camera assumes that this flag has a uniform temperature and corrects for any drift internally. This correction in turn also impacts the temperature measurement and its drift and stability.

A simpler infrared camera, that was never intended to measure absolute temperature, usually does not have all the provisions necessary to perform all these corrections. What you would end up with when trying to use this sort of camera as a temperature measuring device, is a very unstable, constantly drifting “guessing” device.

2024-08-30T16:05:03-07:00Thursday, March 21, 2024|Blog|
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Manufacturing Tomorrow Publishes Article on Induction Seal vs Heat Seal

Our Article on Induction Seal vs Heat Seal Makes Headlines in Manufacturing Tomorrow

Manufacturing Tomorrow, a leading online publication covering the latest trends and technologies in the manufacturing industry, has published our article titled “Induction Seal vs Heat Seal: What’s the difference?“. The article compares and contrasts the two sealing methods commonly used in the packaging industry, providing insights into the pros and cons of each method.

With a focus on helping manufacturers make informed decisions when choosing between induction sealing and heat sealing, the article has garnered positive feedback from industry experts and professionals alike. We are thrilled to see our article featured on Manufacturing Tomorrow and look forward to continuing to provide valuable insights to the manufacturing community.

You can read the article on Manufacturing Tomorrow’s website.

thermal packages

2023-03-27T15:47:55-07:00Monday, March 27, 2023|News|
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MoviTHERM Announces Partnership with HA Industries in Latest Episode of The Thermal Review

MoviTHERM Announces Partnership with HA Industries in Latest Episode of The Thermal Review

MoviTHERM and HA Industries Partner to Provide Advanced Solutions in Infrared Welding, as Discussed on Latest Episode of Thermal Review.

IRVINE, Calif., February 22, 2023 – MoviTHERM, a leading provider of thermal imaging solutions, has announced a new partnership with HA Industries, a company specializing in infrared welding automated machinery. The announcement was made in the latest episode of The Thermal Review podcast, featuring special guest Mark Erndt, President of HA Industries, alongside David Bursell, VP of Business Development of MoviTHERM, and Markus Tarin, President and CEO of MoviTHERM.

During the episode, the three experts delved into the world of infrared welding, discussing its benefits and challenges. They also explored how MoviTHERM and HA Industries’ new partnership would benefit their customers, as the two companies work together to provide the best possible solutions for quality assurance in infrared welding.

Mark Erndt commented on the partnership, saying, “Our visions are aligned, and with the passion we both have, we are confident that we will achieve great things together. I strongly believe that the more the public understands the benefits of infrared welding, the better it will be for the industry in terms of bonding parts together effectively and efficiently. With this partnership, we are excited to expand our reach and continue to drive innovation in this field.”

Markus Tarin added, “We share Mark’s enthusiasm for this partnership and are equally excited about what we can achieve together. Our combined expertise and passion for innovation will allow us to push boundaries and create next-generation technology that can help manufacturers produce better parts at a lower cost, without compromising on quality.”

The Thermal Review is a popular web series that explores the latest trends and advancements in thermal imaging. Each episode features experts in the field who share their knowledge and insights with viewers.

To watch the latest episode of The Thermal Review featuring MoviTHERM and HA Industries, visit the MoviTHERM YouTube channel.

About MoviTHERM: MoviTHERM – Advanced Thermography solutions was founded in 1999. The company provides IoT Cloud monitoring solutions for thermal imaging applications for early fire detection, machine condition monitoring, and other applications. In addition, MoviTHERM offers solutions for plastic welding, package sealing, and non-destructive testing. MoviTHERM is a Teledyne FLIR Premium Partner and master distributor for FLIR Thermal Cameras for automation and science applications.

About HA Industries: HA Industries designs and builds fixtures, machines, tooling, and systems that optimize a variety of component assembly applications. The company provides innovative solutions for welding plastic parts using infrared energy, resulting in strong, precise, and repeatable bonds. HA Industries serves various industries, including automotive, medical, and consumer goods.

2023-02-22T18:22:25-08:00Wednesday, February 22, 2023|News|
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Laundry Fire: Precautionary Steps for Staff & Early Detection

Precautionary Steps to Prevent a Laundry Fire

Article Published by American Laundry News

We are excited to share an important article for those working in the laundry industry about laundry fire prevention and the crucial steps that need to be taken to avoid these dangerous events. The article, “Prevent Laundry Fires Before They Start” was written by one of our own employees at MoviTHERM and published in American Laundry News.

The author sheds light on the importance of taking preventative measures in the laundry industry and provides practical steps that staff can follow to reduce the risk of fires. Additionally, the article also discusses the various early detection equipment that is available to keep laundry facilities safe.

This article provides valuable information on the importance of taking preventative measures, practical steps for staff, and the early detection equipment available to keep laundry facilities safe. By reading this article, you can learn how to ensure the safety of your workplace and reduce the risk of a fire.

Read the article on American Laundry News

2023-02-03T12:04:26-08:00Friday, February 3, 2023|News|
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Expert Insights on Fire Safety in Industrial Laundry Facilities

Expert Insights on Fire Safety in Industrial Laundry Facilities: A Podcast with Markus Tarin and Bill Sullivan

We are thrilled to announce that our very own CEO, Markus Tarin, was invited to be a guest speaker on the American Laundry News podcast. Markus, who is the CEO of MoviTHERM, an innovator in fire detection technology, based in Irvine, California, will be joining fire protection engineer Bill Sullivan from the City of Madison Fire Department in Wisconsin, to discuss the importance of fire safety in industrial laundry facilities.

In this episode, Markus and Bill will share their expert insights on the steps that should be taken in the event of a fire in industrial laundry facilities.

Markus will also share his knowledge of the importance of effective fire detection and prevention methods. He will talk about the benefits of using state-of-the-art fire detection technology such as thermal imaging cameras, which can detect temperature changes and identify hot spots before they turn into full-blown fires. Markus will also discuss the importance of regular maintenance and inspections of fire protection equipment, as well as the importance of keeping the facility free of combustible materials.

We are excited for Markus to be a guest speaker on this American Laundry News podcast episode, as it provides a valuable resource for anyone working in an industrial laundry facility. It offers expert advice on how to keep employees, facilities, and oneself safe from the risk of fire. We encourage everyone in the industry to tune in and learn more about fire safety.

You can listen to the episode on American Laundry News’ website.

2023-01-25T17:13:40-08:00Wednesday, January 25, 2023|News|
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Watch Episode 9 of The Thermal Review

Episode 9 of The Thermal Review is Out Now

Markus Tarin and David Bursell talk 2022 Thermal Highlights and What to Expect in 2023

If you’re interested in staying up-to-date on the latest developments in the world of thermal imaging and automation, we highly recommend tuning in to the newest episode of the Thermal Review podcast, episode 9. This episode provides an in-depth review of the major thermal highlights of 2022 and offers a glimpse into what to expect in the infrared and automation world in 2023.

Listening to this episode will give you valuable insights and an understanding of the current and upcoming trends and technologies in thermal imaging and automation. The episode is hosted by experts in the field, Markus Tarin and David Bursell, who will be sharing their knowledge and experiences, providing you with a deeper understanding of the industry.

Thermal imaging and automation technology are rapidly evolving, and it’s important to stay informed about the latest developments. By listening to this episode, you’ll be able to stay ahead of the curve and gain a competitive edge in your industry. Whether you’re an engineer, scientist, or business professional, this episode will be of great value to anyone interested in the field.

You can watch episode 9 on YouTube or listen on Spotify or Apple Podcasts.

2023-01-23T15:29:42-08:00Monday, January 23, 2023|News|
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iEFD Featured in “Six Systems for Early Fire Detection”

iEFD Featured in Facility Executive’s “Six Systems for Early Fire Detection” Article

If you’re looking for ways to improve fire safety in your facility or workplace, we highly recommend checking out the article “Six Systems for Early Fire Detection” published by Facility Executive. This informative article provides an in-depth look at some of the latest and most effective early fire detection systems available on the market today. One of the featured systems is our company’s iEFD, an advanced system for early fire detection.

Reading this article will give you valuable insights into the different systems available and how they can help to protect your facility and the people inside. Knowing which system is right for your specific needs can be challenging with so many options available. This article provides a comprehensive overview of the different systems and their features, making it easier to choose the best option for your facility.

Moreover, it also talks about the importance of early fire detection in preventing fires from spreading and minimizing the potential damage caused by a fire. With the help of early fire detection systems, you can take proactive measures to prevent fires from occurring and respond quickly in the event of a fire, which can help to protect your facility and the people inside.

Read the full article on Facility Executive’s website.

2023-01-23T15:15:00-08:00Monday, January 23, 2023|News|
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🔋 Happy National Battery Day! 🔋 Today, we celebrate the power behind modern technology: batteries. From smartphones to electric vehicles and renewable energy storage, lithium-ion batteries are everywhere! But with their benefits come risks, particularly the danger of thermal runaway and lithium battery fires. 🔥 Did you know that lithium-ion battery fires can spread in seconds and are difficult to extinguish with traditional fire suppression methods? That’s why early detection is critical to prevent costly damage and safety hazards. To mark National Battery Day, we’re sharing our latest article on how to prevent lithium battery fires using infrared early fire detection technology. Learn about the causes, risks, and best safety practices to protect your facility. 🔗 Read it here: https://zurl.co/iU2Oi How is your business ensuring battery safety? ⚡ #NationalBatteryDay #LithiumBatteryFires #BatterySafety #FirePrevention #ThermalImaging #InfraredFireDetection #BatteryFires
The Perfect Match for Your IR Camera(s)! 💘 Your thermal camera deserves the best! Whether it’s iTL for smart cloud monitoring, MIO MAX for seamless alarm integration, or our compatible enclosures for ultimate protection—we’ve got the perfect match to keep your system running smoothly. Because when it comes to reliability, we don’t play hard to get. 😉 #PerfectMatch #ThermalImaging #SmartMonitoring #FireDetection #HappyValentinesDay #FLIRA50 #FLIRA70 #FLIRAX8 #FLIRA500 #SEEKTHERMAL #SEEKG300 #InfraredCamera
Wishing you a Christmas filled with joy and surrounded by loved ones. Happy holidays from our team! 🎄 🎁
🚨 Now Available on Our Website! 🚨 We're excited to announce that the NEW FLIR A40 is now part of our product lineup! Compatible with our iTL Platform, it enhances early fire detection and condition monitoring with unmatched precision and reliability. Featuring <35 mK thermal sensitivity, ±2°C accuracy, and seamless connectivity, it's the perfect addition to your safety and monitoring systems. 🔗 Learn more and request a quote today: https://zurl.co/7egTv #NewProduct #ThermalImaging #EarlyFireDetection #ConditionMonitoring #InfraredCamera #NowAvailable

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