If you can't see the graphic version of this message please change your profile to receive text messages at {{user("unsubaddr")}}
To view this message on the web go to http://www.itcnewsletter.com/2004/2004-11.htm

 

November 2004

Volume 5, Issue 11

 

In This Issue:

Welcome

 


Quick Poll

Do you know any thermographer who has ever experienced an arc flash while performing thermography?
Yes, while wearing protective clothing
Yes, but not wearing protective clothing
No

view results

Hi {{user("firstname")}},

InfraMation 2004 is over and it was a great success. Read our report below for a recap.

ITC bid farewell to our friend and associate Michelle McDonough in August. Michelle wanted to say a few words to our subscribers and students. You will find her message just below.

We want to introduce a new feature of our newsletter this month. Occasionally we will provide a Quick Poll on a subject of interest to thermographers. You will be able to vote and see the results of voting immediately. You can also come back anytime to get an update on the voting. We are looking for ideas for the Quick Polls. If you have an idea for a poll you would like to see, email me your question and response choices. If we use your poll, we will send you a thank you gift.

This month's technical article discusses how thermography can be used to identify faulty components and improve performance in printed circuit boards. One of the techniques used to find these components is image subtraction. This link will take you right to it.

As usual we have our IR News (don't miss the thermography of Mount St. Helens), Message board posts, and our monthly Brainteaser for you to solve.

As with all images in this newsletter, click each image to see a larger version.

If you want to save this newsletter for viewing off line in your computer, just go to the web page using your browser and select File....Save As or save this email page as html in your email software.

We'll be back next month.
Have a Happy Thanksgiving,

Gary Orlove,
Editor and Publisher

  

 A Farewell from Michelle McDonough  [top]

To all my friends in the IR community, I would like to say farewell. I decided to leave ITC and FLIR (and Inframetrics) after 16 years of service, and my last day was August 6th. It was a very difficult decision for me to make, especially since I have made so many great friends over the years. I've always said that thermographers are some of the nicest people I have ever had the pleasure to work with, and I will miss you all so much. I take with me both happy and sad memories, such as the Level II class held during the week of 9/11. Everyone pulled together and you all made it home safely, thank God. I continue to read the ITC Newsletter to see what's going on in the IR world. Take care, God Bless, and thanks to all for many happy years!

Michelle McDonough
former Sr. Admin, ITC
mmcdonou@adelphia.net

Editor's note: We all miss you Michelle. Thanks for all the years of dedication and friendship.

 

PC Board Troubleshooting  [top]

by Frank Bryson
Bryson Infrared Technologies

 

THE PROBLEM
A printed circuit board manufacturer had problems when a batch of boards failed QC testing, however classical techniques were unable to pinpoint the problem or locate the offending component(s).

THE SOLUTION
A board from an accepted batch and one from the failed batch were powered on a test setup, and infrared thermal images were generated of each. Visual comparison of the thermal images immediately showed that several components on the failed board were operating at significantly different temperatures than the identical components on the accepted board. This was to be expected since previous traditional testing had shown abnormal voltages and power consumptions at several components. When the abnormally warm components on the failed board were observed closely visually it was found that while one of these appeared identical to it’s duplicate on the acceptable board, it’s markings revealed that it was designed to operate at a higher voltage than  specified. This component was dissipating more power than the circuit design could tolerate, causing improper operation of this and several other components. This explained both the malfunction of the board and the temperatures differences that the thermal image displayed.

The infrared thermal image at the far left is that of the acceptable board, while that in the middle is of the failed board. The common color vs. temperature scale associated with these images can be used by the observer to visually determine the operating temperature of any component on either board.

The image to the right displays the thermal differences between the two images above. This image was generated by digitally subtracting the image of the accepted board from that of the failed board. Note that the scale to the left of the image relates color to a plus or minus temperature difference, rather than the absolute temperature as shown in the other images. Using this scale the observer can see if components on the failed board are operating at temperatures above or below their counterparts on the acceptable board.

The component at the top of the image is the source of the manufacturer’s problem. It is identical in size and shape to it’s proper counterpart, however since it is designed to operate at a different voltage than the design specified it caused problems throughout various circuits.

Frank receives an InfraMation Executive Attaché Case for his newsletter contribution. Published articles also earn credit towards IR recertification.

 

 InfraMation 2004 was a fantastic success!  [top]

By any measure, InfraMation has exceeded all its goals. It is, year over year, the largest, most educational, most rewarding infrared camera applications conference in the industry! Thanks to all our attendees in 2004, and we encourage all of you to seriously consider coming to InfraMation 2005! We’ll be announcing the specific dates for next year’s conference soon.

For the first time ever in 2004, we offered over 400 pages of technical articles in our Proceedings book in full color! We’d like to thank our many sponsors and advertisers who have helped make this rather expensive undertaking.

Registration was a busy
place at InfraMation

Shay Edwards explains his Transmissivity
science fair project to a delegate

In response to last year’s customer feedback we offered more IR Clinics than ever before. We held 11 clinics and, also for the first time, brought in outside experts to assist in teaching classes in medical application, veterinary applications, and R&D applications.

Our Poster Session received lots of accolades from attendees who got to view 9 Poster Presentations all in one place – an excellent learning and networking environment.

Bob Rogers leads the Electrical Clinic,
one of 11 this year

Delegates enjoy refreshment, discussions,
and education at the Poster Session

We’re looking forward to an even better conference in 2005 and we’ve already started processing the new ideas and feedback on how we can still make it better. You can look forward to hearing from us soon about InfraMation 2005.

Thank you again for making InfraMation 2004 such a wonderful success.

 

IR News you can Use [top]

 

ITC Message Board Posts [top]

Here is a selection of recent new threads by IR Community members. Feel free to click the links, see how people have responded, and post your own response if you like.

  • Magnetic field?
    How and to what extent is a P-60 affected by a strong magnetic field. Do you loose memory in a flash card?

  • Distribution transformer- electric Utility
    Looking for anyone who has established any temperature rise curves, alarm stage or inspection program for infrared survey on sealed oil filled transformer for distribution (14,400v/600v) installed outside on poles. Looking for internal problem on coil and core via temperature measurement of oil.

  • Hot spot??? please advise
    I recently found this main breaker.
    I noted that upper center bolt was hotter that sides bolts. I take different angles thermograms to eliminate the reflex possibility. This breaker is 850 amp loaded and balanced. What you think guys?..

  • Failing Motors
    Anyone have any pictures of a failing motor(s)? Thanks in advance

  • Need option to painting electronics on boards
    We have been using flat black paint to prep boards prior to performing IR scan but concerns have been raised regarding potential damage to the small traces on the board. There was an article from IBM on the FLIR website about using a 3M window film in place of paint. Has anyone had any experience with such a technique and are there other options? I do not want to dust, paint or otherwise coat the electronics. Any help is much appreciated.

  • Effect of focusing on temperature measurement
    I recently had to make a temperature measurement on a large and very homogeneous but inaccessible target at a distance of several meters. One consequence was that I could not focus the camera (FLIR 160M) correctly or was unsure of the focus setting.
    My guess is that that should not have a great influence on the average temperature reading. Am I correct ?

  • Sky Lights
    How much do heat loss am i getting with two sky lights. And if someone wants me to do a heat loss analysis what am i looking for

  • Thermography for Energy Efficiency
    With the current high price of energy, it seems that thermal imaging of home envelopes and duct systems might be a reasonable expansion of my building repair and maintenance company. I have no idea where to start, beyond surfing the web and finding this great forum. I would greatly appreciate any information on required equipment, costs, pricing, marketing, etc. As well, if you can share the common mistakes made by contractors entering this specialized area, I'm all ears. Thanks for your time and assistance.

  • I need clarification
    This is a picture of the interior side of an exterior wall of a home, would this be considered thermal bridging???



     

  • Wall studs
    My question deals with moisture detection in wall studs. The situation is rain enters the building through the roof and saturates the wall. The tricky part is by time I get to the house three months have passed the walls look dry but the studs look soaked. What is going on?
     

And of course if YOU have a question or want to start a discussion on a topic, we would love to hear from you. Just post a new thread on a message board.

 

Brainteaser of the Month  [top]

Here is this month's brainteaser. What are the circles between the poles of the breaker?

Readers who email us the correct identification and explanation of the object(s) in the thermograms are entered into a drawing to win a prize from ITC. Please put "Brainteaser" as the subject of the message.

Click here to email your guess

Do you have an interesting image that you think would stump other thermographers? If so please email me your image (preferably in native .img, .jpg, .tif, .tgw, or .tmw format) with an accompanying visible photo and explanation. If your image is used, you receive a gift as well.

 

Last Month's Brainteaser [top]

No this is not a goose or a swan! This is a thermogram of an exhaust pipe on a diesel engine. Note you can see the exhaust.

Congratulations to our winner, Carlo Lemon from NB Power and a thank you to Jim Barker of Phelps Dodge for the thermogram. Both Carlo and Jim receive a special low emissivity traveling coffee mug.

 

Past Issues  [top]

Click the links below to view past issues of this newsletter:

All past issues from February 2000 through October 2003

October 2004

September 2004

August 2004

July 2004

June 2004

May 2004

April 2004

March 2004

February 2004

January 2004

December 2003

November 2003

 

Course Calendar  [top]

Click the links below to see our latest course calendars (in local language).

Americas - Level I

Americas - Level II

Americas - Level III

Americas - E Series

Americas - Building Science

Americas - Electrical

Americas - Roof

Americas - R&D

 Eurasia

 Deutschland

 France

 Italia

 United Kingdom

 

About the Infrared Training Center  [top]

The Infrared Training Center offers training and certification in all aspects of infrared thermography use. Our world-class training headquarters are located near Boston, Massachusetts, USA and Stockholm, Sweden and have the world's most extensive hands on laboratories for infrared applications. In addition, we have training centers around the world. Please join us in exploring the fascinating world of the infrared!

Your comments and suggestions about this newsletter are welcomed and encouraged. If you have an interesting application or case study to share, we encourage you to submit it for publication. Published articles earn credit towards IR recertification.

Please e-mail Gary Orlove or send regular mail to the Americas office.

Visit our website:

ITC Americas, BOSTON

16 Esquire Road
N. Billerica, MA 01862, USA

Tel: +1-978-901-8405
Toll free: +1-866-TRAINIR
                 (866-872-4647)
Fax: +1.978.901-8832
E-mail:
mailto:info_us@infraredtraining.com

ITC Eurasia, SWEDEN

Rinkebyvägen 19
SE-182 11 Danderyd, Sweden

Tel: +46 (0) 8 753 25 00
Fax: +46 (0) 8 753 26 01
E-mail:
mailto:itc@flir.se

 

THIS DOCUMENT IS FOR INFORMATIONAL PURPOSES ONLY. INFORMATION PROVIDED IN THIS DOCUMENT IS PROVIDED 'AS IS' WITHOUT WARRANTY OF ANY KIND. The user assumes the entire risk as to the accuracy and the use of this document. The Infrared Training Center newsletter may be copied and distributed subject to the following conditions: 1. All text and images must be copied without modification and all pages must be included; 2. All copies must contain the Infrared Training Center copyright notice and any other notices provided therein;
3. This document may not be distributed for profit

©2004 Infrared Training Center  - All rights reserved

 

Privacy Statement: We're happy to have you on our list, and since we want to keep you all to ourselves, we never share your e-mail address with anyone. Period.

 

To unsubscribe or update your user profile, click here.

P.S. Did a friend send you this? Sign up to get your own here - it's award-winning, useful, and complimentary.

P.P.S. Got questions, comments, or ideas for us? Email us - thanks!