NSL Analytical's Blog

While X-Ray Fluorescence (XRF) spectroscopy provides quantitative elemental composition of materials, it cannot distinguish between identical atoms in different crystalline phase arrangements. However, we can confirm both the elemental and phase content of ceramic materials with certainty by combining XRF analysis with powder X-Ray Diffraction (XRD) analysis. Watch this webinar from NSL Analytical Services and Rigaku, a leader in x-ray technology, to learn more.

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Even very low levels of moisture can have significant impacts on metal powder flow, consolidation and surface oxidation, particularly during powder reuse. In this webinar, we examine how Karl Fischer titration is applied to precise moisture analysis in metal powders for additive manufacturing.

Although several techniques can be applied to the measurement of water in such powders, the results are often inconsistent or exhibit high variability. Karl Fischer titration can provide high precision, accuracy over a very wide range, and excellent repeatability. In this webinar, we use a critical review of published data and procedures to provide insight into the application of the technique to metal powder additive manufacturing.

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Hydrogen embrittlement can cause a part to fail under stresses well below the expected material strength. Plus, the phenomenon is virtually undetectable using current NDE techniques. In this "Famous Failures" webinar, NSL metallurgists Rebecca Stawovy and Ben Schmidt explore a Bell 222U Helicopter failure that occurred due to hydrogen embrittlement. They discuss which conditions can lead to hydrogen embrittlement, how it causes a part to fail, and how it can be prevented. 

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Fatigue has always been a major issue in designing for transportation, particularly airplanes. This webinar presented three airplane failures from NTSB and British Ministry reports that were the result of fatigue: the DeHavilland Comets in 1954, Aloha 243 in 1988, and Southwest 1380 in 2018. It also included a brief discussion of fatigue and a fatigue failure of a box trailer from the NSL files.

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In this second installation of our Famous Failures webinar series, attendees learned about the role of heat in the failure of the steel in the World Trade Center buildings on September 11, 2001. This webinar featured Dave Kovarik, NSL Metallurgist and Failure Analyst, George Vander Voort, president of Vander Voort Consulting with 29 years of steel industry experience, and Jaren Stidd, a Metallurgical Technician for NSL.

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Stress corrosion cracking is a progressive cracking mechanism that can often lead to catastrophic failure. There have been several notable failures due to this phenomenon, such as the collapse of the Silver Bridge in December of 1967. Learn about this failure in the first webinar of our "Famous Failures" series, as well as the metallurgy behind it, with other examples.

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Watch this Tech Talk Webinar to discover how an accredited commercial laboratory like NSL produces accurate repeatable results in a timely manner. You'll learn how to select a lab, the differences in accreditations, and understand what it all means. 

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ASM International Cleveland Chapter invites you to attend our Tuesday, January19th meeting via Ring Central.  Meeting starts at 7:00 pm. Chapter Chair Dave Kovarik will do opening remarks, introduce our speaker and topic, with the presentation to follow.

The event is free. Please register and the link will be emailed to you in the registration confirmation email.

January Online Technical Meeting
Tuesday 1/19/2021
7:00 PM

Special Topic: A Forensic Investigation of Origin for the Image & Shroud of Turin Using Material Analytical Techniques
Guest Speaker: David Onysko

REGISTER HERE

With nearly 1,000 materials restricted by California’s Proposition 65, compliance may appear to be a daunting and expensive task. In this Tech Talk webinar, NSL's Dave van der Wiel and Sarah Baskerville discuss common misconceptions of Prop 65 compliance, review the regulated products and materials, and provide practical advice for helping businesses navigate toward a compliance solution.

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Optical microscopy has been a staple of metallurgical analysis to determine cleanliness, grain structure, surface conditions, porosity, and more. In this Tech Talk webinar, NSL metallurgists Dave Kovarik and Rebecca Stawovy explain the history of metallurgical microscopes and how they work. You will also learn the features of modern-day microscopes and how they are used today.

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