Author: Unloked Digital

Now Available: DRT-201 advanced drying rate detection algorithm

Thermetrics just completed an extensive material review study and optimized our drying rate detection algorithm to cover a wider range of samples. Our DRT-201 has always provided reliable and consistent drying rate results for those samples that behave well. You know the ones—they wet out nicely, dry uniformly, and don’t change dimensions between dry and wet state. But the real world includes a complex array of materials and scenarios that don’t always fit within the guidance of the AATCC TM201 test method.

If you are testing samples with hydrophobic surfaces, membrane layers, or other samples that might push the boundaries of the test method, you will find the Thermetrics DRT-201 be an even more versatile instrument for both specialized research and production testing.

Dan Howe, Thermetrics engineer specializing in the DRT product put it this way: “In general, the machine does an automatic slope detection and computation to extrapolate moisture level based on sample surface temperature as described in the AATCC TM201 Test Method. It works very well with some materials but not at all with others. The more unusual a material you tested, the more prone to glitches it was, which I know has been frustrating to operators. We rewrote the software to be more robust when samples didn’t behave with a typical response curve. The range of testable samples is now larger and when a sample can’t be measured with the automatic detection, the system now provides a fault code to help the operators mitigate for future tests.”

Drying Rate Tester (DRT) with labeled parts

For more information about the Thermetrics Drying Rate Tester (DRT-201) or the new algorithm, please contact Thermetrics.





Long-time Thermetrics partner, PBI Performance Products showcases the Flash Fire Cylinder

In what started as a rough sketch on a flipchart during a brainstorming session, the Flash Fire Cylinder (FFC) has evolved into an highly repeatable, closer-to-reality bench-scale tool for testing thermal performance of textiles. 

PBI president Bill Lawson recently narrated the first in a series of videos on how the FFC is helping achieve their goal of providing lightweight, comfortable PPE for end-users. The first video covers the need and evolution of identifying a closer-to-reality way to test the materials for PPE. The second video highlights some key features of the FFC.


“The closer-to-reality testing the FFC affords is a huge benefit to garment makers, helping them better-understand how their garments will perform in the field.” – William Lawson, President of PBI

About the Flash Fire Cylinder

With its cylindrical design, 15 embedded sensors, and sample holder rings creating a quarter-inch air-gap, the FFC provides a much closer approximation to the human body—the actual end-use case. Benefits of the device are many, including:

  • A huge cost-savings with the ability to test materials at a bench scale before going to full-scale manikin tests
  • Compact for use in existing lab environments
  • Easy sample prep and installation for highly repeatable test conditions 
  • Integrated, robust safety precautions for test operators, including an external emergency-stop interface
  • Ability to see the effects of dimensional changes in the material under very controlled conditions
Flash fire cylinder (FFC) with flames

Be on the lookout for more videos in this series from PBI Performance Products, and contact Thermetrics to learn how the FFC can support your org’s materials testing needs.





Thermetrics showcases the value of its Flash Fire Cylinder at ECPC 2021

Partnering with PBI Performance Products Development Engineer Josh Ingram, Thermetrics President Rick Burke delivered a talk, “Development and Validation of a Bench-ScaleFlash Fire Materials Tester” at the 9th European Conference on Protective Clothing held in May 2021.

During the presentation, Burke and Ingram covered the “missing dimension” in flame exposure testing. The standard across the globe is testing flat fabric samples which only considers one dimension—the alternative testing method being a flash fire manikin, which provides data for three dimensions, but is very expensive. Enter the Flash Fire Cylinder (FFC) which is an excellent intermediate testing step.

The benefits of the Thermetrics FFC are many: 

  • Compact for use in existing lab environments—fits in any standard lab hood
  • Integrated, robust safety precautions for test operators
  • Incorporates an industry-recognized sensor design for proven accuracy
  • Have the ability to test materials at bench scale before going to full-scale manikin tests
  • With the cylinder form of the FFC, you can see the effects of dimensional changes in the material under very controlled conditions
Flash Fire Cylinder Fills the Gap - 2 dimensions

For more information about the Thermetrics Flash Fire Cylinder, please contact Thermetrics.





Happy Retirement Dave!

After 18+ years at Thermetrics, Dave Heiss, our International Sales Director, will be retiring at the end of May (May 28, 2021). When Dave joined Thermetrics in 2003, we were a box of thermal geeks without a promotional voice. Since that time, Dave has grown our domestic and international sales and also been the “behind-the-scenes” author for brochures, product literature, newsletters, the website blog, and other company communications. Chances are it was Dave who introduced you to the many manikin and hotplate innovations developed by Thermetrics over the years.

Dave Heiss, Thermetrics alumnus and future island hopper

Of course, if you attended a trade show or conference Dave was the person you were most likely to see. Dave has been the face of Thermetrics for half of the company’s existence, and he will be missed. 



Despite our best attempts to chain him to his desk, there are mountains, pastures and hiking shoes, along with grandkids waiting for him. We wish Dave well and thank him for sharing his time and talent with the Thermetrics family. Feel free to connect with him in the next few weeks to share your memories and gratitude.

Aki Sirkkola, Thermetrics International Sales

Aki has been part of Thermetrics service/support division since he joined the company in 2014, and he will bring impressive technical knowledge to the international sales role.  There is a good chance you already know Aki, as he has worked with the vast majority of Thermetrics customers and on our systems in the field.



So please join me in a heartfelt goodbye to Dave and a warm welcome to Aki as he steps into the International Sales position.

Introducing the newest member of our thermal manikin family

April 7, 2021

Thermetrics is proud to present our newly developed female thermal manikin! May 4, 2021 Update: The community has spoken and the final selected name is Liz. Thank you to all who participated in her naming!

 

Our manikins have measured comfort in car cabins, estimated heat stress in protective wear, evaluated space suits for NASA, and supported testing for countless other scenarios. But, all of these scenarios have been tested using a male manikin.

 

It’s time all garments and gear designed for females are tested with female manikins. Female thermal manikins are vastly underrepresented in the research and testing arena, and those that are in use often resemble store mannequins—a far cry from realistic female anthropometry. As a result, products designed to enhance performance, health, and safety for women may not perform as promised.

 

You’ve designed for women. Now you can test for women.

 

 

About the names

Cori. “Cori” is suggested to honor Gerty Cori (1896-1957) who was the first woman awarded the Nobel prize in physiology and medicine. She earned the Nobel Prize in 1947 for her discovery of the course of carbohydrate metabolism, where glucose is broken down into lactic acid and used for energy storage, known as the Cori Cycle. Gerti Cora was a trailblazer during an era of male-dominated scientific research. Understanding energy storage and consumption is key for thermal manikins, especially if they couple to a physiology model like this one does.

Joules. The name Joules is a natural nod to the energy balance critical to the design and use of Thermal manikins. The Joule is a derived energy unit equivalent to kg m2/sec2. More practically, one Joule is the energy dissipated when 1 ampere flows through a resistance of 1 ohm. Or in the case of this specific female manikin with surface area of 1.61 square meters, a 1 MET activity level during a 30 minute ASTM F2370 test duration would generate 168,664 Joules from the manikin heaters.

Liz. The name “Liz” is proposed in honor of Dr. Elizabeth “Liz” McCullough who spent her career working with manikins, and who was a strong female leader and pioneer in this field. No female scientist worldwide has done more with thermal manikins to advance testing, development, and standardization of improved protective clothing, sleeping systems, and personal protective equipment. Liz has published over 100 scientific papers and book chapters, and her work has been incorporated into textbooks in multiple languages. She has been the primary author of several ASTM standards, including standards utilizing thermal manikins. Liz was the driving force behind developing a successful and internationally known textile testing program using manikins at Kansas State University.