ASM Board Appointment
MEE’s CEO/Senior Engineer, Larry Hanke, was just appointed to the Board of the ASM International Metallographic Society (IMS). The Metallographic Society is a professional organization serving those involved in the examination, analysis, characterization, structure and evaluation of materials. Service on the IMS Board of Directors involves planning and driving the future strategy of the […]
Nitinol Seminar
Kurt Schenk and Neal Hanke attended a one day seminar about Nitinol and how its unique properties apply to medical devices and designs. The primary topics for the seminar included structure, processing, mechanical properties, corrosion behavior, and fatigue life of Nitinol. MEE has been helping medical device manufacturers to successfully use Nitinol in their products […]
MEE Presentation on the The Science of Fractography
Larry Hanke and Dan Grice will be presenting a talk on A Historical Perspective of Fracture Analysis at the February 19 ASM Symposium at Hennepin Technical College. The theme of the symposium is “Materials Retrospect: 100 Years of Advancement” in recognition of the 100th anniversary of the MN chapter of ASM International. Other presentations at […]
Materials Characterization Seminar
Senior Scientist, Dieter Scholz and Materials Engineer, Neal Hanke will be speaking at the Minnesota chapter of ASM 2018 seminar in Brooklyn Park, MN on February 28. The Materials Characterization Seminar is an opportunity to learn about the most recent developments in advanced characterization techniques and their practical applications. Dieter will be speaking on Broad […]
Graphitic Corrosion Case Study
We were asked to determine the mechanism and possible causes of corrosion of a cast iron sanitary sewer pipe. Metallurgical testing and EDS analysis pointed to graphitic corrosion. With graphitic corrosion there is no reduction in the size or shape of the pipe but the strength of the material is severely reduced. The Vent Pipe case study explains […]
Technical Paper Published
“Broad Beam Ion Milling for Microstructure Characterization,” a technical paper authored by MEE staff Larry Hanke, Kurt Schenk and Dieter Scholz, was recently published in the online version of Materials Performance and Characterization. An abstract of the article is available on the ASTM International digital library site. Ion beam milling is a unique method of sample preparation that complements and significantly extends […]
New Laboratory Service
Materials Evaluation and Engineering, Inc. has added testing to ASTM standard F2082 to its list of laboratory services. This test provides a rapid and economical method for the determination of transformation temperature for Nickel-Titanium shape memory alloy, also known as Nitinol. Nitinol’s unique shape-memory and superelastic properties lends itself to a wide variety of uses in medical and industrial […]
Preparing Samples for Metallographic Examination
Not all of our projects come to us in small packages. How do we get that 7′ long, 6″ diameter steel tube or the 4′ diameter industrial fan under a microscope? Sample preparation often begins in our machine shop. The MEE shop is equipped with a variety of cut-off saws, a Bridgeport mill, plasma cutter, […]
Variable Pressure SEM vs Field Emission SEM
Two types of modern scanning electron microscopes provide the range of sampling handling and resolution needed for evaluating most samples – the variable pressure SEM (VPSEM) and the high-resolution field emission SEM (FESEM). At MEE, we offer SEM services with both types of microscopes to meet almost every challenge. The VPSEM is a workhorse for routine work, but magnification is not […]